// Crypto Intelligence Hub - Main JavaScript with Sidebar Navigation
// Enhanced Pro Trading Terminal UI

// =============================================================================
// Console Warning Filter (suppress external server warnings)
// =============================================================================
(function() {
    const originalWarn = console.warn;
    const originalError = console.error;
    
    console.warn = function(...args) {
        const message = args.join(' ');
        // Suppress Permissions-Policy warnings from external servers (e.g., Hugging Face)
        if (message.includes('Unrecognized feature:') && 
            (message.includes('ambient-light-sensor') || 
             message.includes('battery') || 
             message.includes('document-domain') ||
             message.includes('layout-animations') ||
             message.includes('legacy-image-formats') ||
             message.includes('oversized-images') ||
             message.includes('vr') ||
             message.includes('wake-lock'))) {
            return; // Suppress these warnings
        }
        originalWarn.apply(console, args);
    };
    
    console.error = function(...args) {
        const message = args.join(' ');
        // Suppress Hugging Face Spaces SSE errors (only relevant for HF deployment)
        if (message.includes('/api/spaces/') && message.includes('/events') ||
            message.includes('Failed to fetch Space status') ||
            message.includes('SSE Stream ended') ||
            message.includes('ERR_HTTP2_PROTOCOL_ERROR')) {
            return; // Suppress these errors (not relevant for local deployment)
        }
        originalError.apply(console, args);
    };
})();

// =============================================================================
// Toast Notification System (use the one from toast.js)
// =============================================================================
// Helper function to get toast manager (loaded from toast.js)
function getToast() {
    return window.toastManager || window.toast || {
        init() {},
        show(msg, type) { console.log(`Toast: ${type} - ${msg}`); },
        success(msg) { this.show(msg, 'success'); },
        error(msg) { this.show(msg, 'error'); },
        warning(msg) { this.show(msg, 'warning'); },
        info(msg) { this.show(msg, 'info'); }
    };
}

// =============================================================================
// Global State
// =============================================================================
const AppState = {
    currentTab: 'dashboard',
    data: {},
    charts: {},
    isLoading: false,
    sidebarOpen: false
};

// =============================================================================
// Sidebar Navigation
// =============================================================================

function toggleSidebar() {
    const sidebar = document.getElementById('sidebar');
    const overlay = document.getElementById('sidebar-overlay');
    
    if (sidebar && overlay) {
        sidebar.classList.toggle('active');
        overlay.classList.toggle('active');
        AppState.sidebarOpen = !AppState.sidebarOpen;
    }
}

function switchTab(tabId) {
    // Update nav items
    const navItems = document.querySelectorAll('.nav-item');
    navItems.forEach(item => {
        if (item.dataset.tab === tabId) {
            item.classList.add('active');
        } else {
            item.classList.remove('active');
        }
    });
    
    // Update tab panels
    const tabPanels = document.querySelectorAll('.tab-panel');
    tabPanels.forEach(panel => {
        if (panel.id === `tab-${tabId}`) {
            panel.classList.add('active');
        } else {
            panel.classList.remove('active');
        }
    });
    
    // Update page title
    const pageTitles = {
        'dashboard': { title: 'Dashboard', subtitle: 'System Overview' },
        'market': { title: 'Market Data', subtitle: 'Real-time Cryptocurrency Prices' },
        'models': { title: 'AI Models', subtitle: 'Hugging Face Models' },
        'sentiment': { title: 'Sentiment Analysis', subtitle: 'AI-Powered Sentiment Detection' },
        'trading-assistant': { title: 'Trading Signals', subtitle: 'AI Trading Assistant' },
        'news': { title: 'Crypto News', subtitle: 'Latest News & Updates' },
        'settings': { title: 'Settings', subtitle: 'System Configuration' },
        'diagnostics': { title: 'Test & Diagnostics', subtitle: 'System Diagnostics & Model Testing' },
        'ai-tools': { title: 'AI Design Tools', subtitle: 'AI-Powered Tools & Utilities' },
        'providers': { title: 'Providers', subtitle: 'Provider Management' },
        'resources': { title: 'Resources', subtitle: 'Resource Management' },
        'defi': { title: 'DeFi Analytics', subtitle: 'DeFi Protocol Analytics' },
        'system-status': { title: 'System Status', subtitle: 'System Health Monitoring' }
    };
    
    const pageTitle = document.getElementById('page-title');
    const pageSubtitle = document.getElementById('page-subtitle');
    
    if (pageTitle && pageTitles[tabId]) {
        pageTitle.textContent = pageTitles[tabId].title;
    }
    if (pageSubtitle && pageTitles[tabId]) {
        pageSubtitle.textContent = pageTitles[tabId].subtitle;
    }
    
    // Update state
    AppState.currentTab = tabId;
    
    // Load tab data
    loadTabData(tabId);
    
    // Close sidebar on mobile after selection
    if (window.innerWidth <= 768) {
        toggleSidebar();
    }
}

// =============================================================================
// Initialize App
// =============================================================================

document.addEventListener('DOMContentLoaded', () => {
    console.log('🚀 Initializing Crypto Intelligence Hub...');
    
    // Initialize toast manager
    getToast().init();
    
    // Check API status
    checkAPIStatus();
    
    // Load initial dashboard immediately
    setTimeout(() => {
        loadDashboard();
    }, 100);
    
    // Auto-refresh every 30 seconds
    setInterval(() => {
        if (AppState.currentTab === 'dashboard') {
            loadDashboard();
        }
    }, 30000);
    
    // Listen for trading pairs loaded event
    document.addEventListener('tradingPairsLoaded', function(e) {
        console.log('Trading pairs loaded:', e.detail.pairs.length);
        initTradingPairSelectors();
    });
    
    console.log('✅ App initialized successfully');
});

// Initialize trading pair selectors after pairs are loaded
function initTradingPairSelectors() {
    // Initialize asset symbol selector
    const assetSymbolContainer = document.getElementById('asset-symbol-container');
    if (assetSymbolContainer && window.TradingPairsLoader) {
        const pairs = window.TradingPairsLoader.getTradingPairs();
        if (pairs && pairs.length > 0) {
            assetSymbolContainer.innerHTML = window.TradingPairsLoader.createTradingPairCombobox(
                'asset-symbol',
                'Select or type trading pair',
                'BTCUSDT'
            );
        }
    }
    
    // Initialize trading symbol selector
    const tradingSymbolContainer = document.getElementById('trading-symbol-container');
    if (tradingSymbolContainer && window.TradingPairsLoader) {
        const pairs = window.TradingPairsLoader.getTradingPairs();
        if (pairs && pairs.length > 0) {
            tradingSymbolContainer.innerHTML = window.TradingPairsLoader.createTradingPairCombobox(
                'trading-symbol',
                'Select or type trading pair',
                'BTCUSDT'
            );
        }
    }
}

// =============================================================================
// Tab Data Loading
// =============================================================================

function loadTabData(tabId) {
    console.log(`Loading data for tab: ${tabId}`);
    
    switch(tabId) {
        case 'dashboard':
            loadDashboard();
            break;
        case 'market':
            loadMarketData();
            break;
        case 'models':
            loadModels();
            break;
        case 'sentiment':
            // Sentiment tab is interactive, no auto-load needed
            break;
        case 'trading-assistant':
            // Trading assistant tab is interactive, no auto-load needed
            break;
        case 'news':
            loadNews();
            break;
        case 'settings':
            loadSettings();
            break;
        case 'diagnostics':
            refreshDiagnosticStatus();
            break;
        case 'ai-tools':
            loadAITools();
            break;
        default:
            console.log('No specific loader for tab:', tabId);
    }
}

function refreshCurrentTab() {
    loadTabData(AppState.currentTab);
    getToast().success('Data refreshed successfully');
}

// =============================================================================
// API Status Check
// =============================================================================

async function checkAPIStatus() {
    try {
        const response = await fetch('/health');
        const data = await response.json();
        
        const statusIndicator = document.getElementById('sidebar-status');
        if (statusIndicator) {
        if (data.status === 'healthy') {
                statusIndicator.textContent = 'System Active';
                statusIndicator.parentElement.style.background = 'rgba(16, 185, 129, 0.15)';
                statusIndicator.parentElement.style.borderColor = 'rgba(16, 185, 129, 0.3)';
        } else {
                statusIndicator.textContent = 'System Error';
                statusIndicator.parentElement.style.background = 'rgba(239, 68, 68, 0.15)';
                statusIndicator.parentElement.style.borderColor = 'rgba(239, 68, 68, 0.3)';
            }
        }
    } catch (error) {
        console.error('Error checking API status:', error);
        const statusIndicator = document.getElementById('sidebar-status');
        if (statusIndicator) {
            statusIndicator.textContent = 'Connection Failed';
            statusIndicator.parentElement.style.background = 'rgba(239, 68, 68, 0.15)';
            statusIndicator.parentElement.style.borderColor = 'rgba(239, 68, 68, 0.3)';
        }
    }
}

// =============================================================================
// Dashboard Loading
// =============================================================================

async function loadDashboard() {
    console.log('📊 Loading dashboard...');
    
    // Show loading state
    const statsElements = [
        'stat-total-resources', 'stat-free-resources', 
        'stat-models', 'stat-providers'
    ];
    statsElements.forEach(id => {
        const el = document.getElementById(id);
        if (el) el.textContent = '...';
    });
    
    const systemStatusDiv = document.getElementById('system-status');
    if (systemStatusDiv) {
        systemStatusDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Loading system status...</div>';
    }
    
    try {
        // Load resources summary (use the correct endpoint)
        const resourcesRes = await fetch('/api/resources/summary');
        if (!resourcesRes.ok) {
            throw new Error(`Resources API returned ${resourcesRes.status}`);
        }
        let resourcesData = await resourcesRes.json();
        
        console.log('Resources data:', resourcesData);
        
        // Check if data is an array (unexpected format - might be from wrong endpoint)
        if (Array.isArray(resourcesData)) {
            // Try to extract summary from array if it contains objects with summary property
            const summaryObj = resourcesData.find(item => item && typeof item === 'object' && !Array.isArray(item) && item.summary);
            if (summaryObj && summaryObj.summary) {
                resourcesData = summaryObj;
                console.log('Extracted summary from array response');
            } else {
                // Fallback: use array length as total resources estimate
                const totalResources = resourcesData.length;
                console.log(`Using array length (${totalResources}) as resource count estimate`);
                document.getElementById('stat-total-resources').textContent = totalResources;
                document.getElementById('stat-free-resources').textContent = Math.floor(totalResources * 0.8); // Estimate 80% free
                document.getElementById('stat-models').textContent = '0';
                
                // Update sidebar stats
                const sidebarResources = document.getElementById('sidebar-resources');
                const sidebarModels = document.getElementById('sidebar-models');
                if (sidebarResources) sidebarResources.textContent = totalResources;
                if (sidebarModels) sidebarModels.textContent = '0';
                return; // Exit early since we can't process array format properly
            }
        }
        
        // Check if we have the summary object
        let summary = null;
        if (resourcesData && typeof resourcesData === 'object' && !Array.isArray(resourcesData)) {
            summary = resourcesData.summary || resourcesData;
        }
        
        // Validate that summary is an object with expected properties
        if (summary && typeof summary === 'object' && !Array.isArray(summary)) {
            // Check if it has at least one of the expected properties
            const hasExpectedProperties = summary.total_resources !== undefined || 
                                         summary.free_resources !== undefined || 
                                         summary.models_available !== undefined ||
                                         (resourcesData.success !== false && resourcesData.success !== undefined);
            
            if (hasExpectedProperties || resourcesData.success === true) {
                const totalResources = summary.total_resources || 0;
                const freeResources = summary.free_resources || 0;
                const modelsAvailable = summary.models_available || 0;
                
                // Update metric cards - ensure elements exist before updating
                const totalResourcesEl = document.getElementById('stat-total-resources');
                const freeResourcesEl = document.getElementById('stat-free-resources');
                const modelsEl = document.getElementById('stat-models');
                
                if (totalResourcesEl) totalResourcesEl.textContent = totalResources;
                if (freeResourcesEl) freeResourcesEl.textContent = freeResources;
                if (modelsEl) modelsEl.textContent = modelsAvailable;
                
                // Update sidebar stats
                const sidebarResources = document.getElementById('sidebar-resources');
                const sidebarModels = document.getElementById('sidebar-models');
                if (sidebarResources) sidebarResources.textContent = totalResources;
                if (sidebarModels) sidebarModels.textContent = modelsAvailable;
                
                // Load categories chart - handle both object and simple count format
                if (summary.categories && typeof summary.categories === 'object' && !Array.isArray(summary.categories)) {
                    const categories = summary.categories;
                    // Convert {category: {count: N}} to {category: N} for chart
                    const chartData = {};
                    for (const [key, value] of Object.entries(categories)) {
                        chartData[key] = typeof value === 'object' && value !== null ? (value.count || value) : value;
                    }
                    createCategoriesChart(chartData);
                }
            } else {
                // Data structure exists but doesn't have expected properties
                console.warn('Resources data missing expected properties:', resourcesData);
                document.getElementById('stat-total-resources').textContent = '0';
                document.getElementById('stat-free-resources').textContent = '0';
                document.getElementById('stat-models').textContent = '0';
            }
        } else {
            // Invalid data format - log minimal info to avoid console spam
            if (Array.isArray(resourcesData)) {
                console.log(`Resources API returned array (${resourcesData.length} items) instead of summary object`);
            } else {
                console.log('Resources data format unexpected - not a valid object:', typeof resourcesData);
            }
            document.getElementById('stat-total-resources').textContent = '0';
            document.getElementById('stat-free-resources').textContent = '0';
            document.getElementById('stat-models').textContent = '0';
        }
        
        // Load system status
        try {
            const statusRes = await fetch('/api/status');
            if (statusRes.ok) {
                const statusData = await statusRes.json();
                
                // Handle different response formats
                let providers = 0;
                if (statusData.providers && typeof statusData.providers === 'object') {
                    providers = statusData.providers.total || 0;
                } else {
                    providers = statusData.total_apis || statusData.total_providers || statusData.providers || 0;
                }
                
                const providersEl = document.getElementById('stat-providers');
                if (providersEl) {
                    providersEl.textContent = providers;
                }
            
            // Display system status - handle different response formats
            const systemStatusDiv = document.getElementById('system-status');
            if (systemStatusDiv) {
                // Try to get health status from different possible fields
                const healthStatus = statusData.system_health || statusData.status || 'ok';
                const healthClass = healthStatus === 'healthy' || healthStatus === 'ok' ? 'alert-success' : 
                                   healthStatus === 'degraded' ? 'alert-warning' : 'alert-error';
                
                // Get provider counts
                const providers = statusData.providers || {};
                const totalProviders = providers.total || statusData.total_apis || 0;
                const onlineProviders = statusData.online || 0;
                const degradedProviders = statusData.degraded || 0;
                const offlineProviders = statusData.offline || 0;
                const avgResponseTime = statusData.avg_response_time_ms || 0;
                const lastUpdate = statusData.last_update || statusData.timestamp || new Date().toISOString();
                
                // Format last update time
                let formattedTime = 'N/A';
                try {
                    const updateDate = new Date(lastUpdate);
                    formattedTime = updateDate.toLocaleString('en-US', {
                        year: 'numeric',
                        month: '2-digit',
                        day: '2-digit',
                        hour: '2-digit',
                        minute: '2-digit',
                        second: '2-digit'
                    });
                } catch (e) {
                    formattedTime = lastUpdate;
                }
                
                // Create a properly formatted system status display
                const statusIcon = healthStatus === 'healthy' || healthStatus === 'ok' ? 
                    '<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M22 11.08V12a10 10 0 1 1-5.93-9.14"></path><polyline points="22 4 12 14.01 9 11.01"></polyline></svg>' :
                    healthStatus === 'degraded' ?
                    '<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="12"></line><line x1="12" y1="16" x2="12.01" y2="16"></line></svg>' :
                    '<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="12"></line><line x1="12" y1="16" x2="12.01" y2="16"></line></svg>';
                
                const statusText = healthStatus === 'ok' ? 'Healthy' : 
                                  healthStatus === 'healthy' ? 'Healthy' :
                                  healthStatus === 'degraded' ? 'Degraded' :
                                  healthStatus === 'error' ? 'Error' : 'Unknown';
                
                systemStatusDiv.innerHTML = `
                    <div class="system-status-container">
                        <div class="system-status-header ${healthClass}">
                            <div class="status-icon-wrapper">
                                ${statusIcon}
                            </div>
                            <div>
                                <div class="status-title">System Status</div>
                                <div class="status-value">${statusText}</div>
                            </div>
                        </div>
                        <div class="system-status-grid">
                            <div class="status-item">
                                <div class="status-item-label">Total Providers</div>
                                <div class="status-item-value">${totalProviders}</div>
                            </div>
                            <div class="status-item status-online">
                                <div class="status-item-label">Online APIs</div>
                                <div class="status-item-value">${onlineProviders}</div>
                            </div>
                            <div class="status-item status-degraded">
                                <div class="status-item-label">Degraded APIs</div>
                                <div class="status-item-value">${degradedProviders}</div>
                            </div>
                            <div class="status-item status-offline">
                                <div class="status-item-label">Offline APIs</div>
                                <div class="status-item-value">${offlineProviders}</div>
                            </div>
                            <div class="status-item">
                                <div class="status-item-label">Avg Response Time</div>
                                <div class="status-item-value">${avgResponseTime}ms</div>
                            </div>
                            <div class="status-item status-full-width">
                                <div class="status-item-label">Last Update</div>
                                <div class="status-item-value status-time">${formattedTime}</div>
                            </div>
                        </div>
                    </div>
                `;
            }
            } else {
                throw new Error('Status endpoint not available');
            }
        } catch (statusError) {
            console.warn('Status endpoint error:', statusError);
            document.getElementById('stat-providers').textContent = '-';
            
            const systemStatusDiv = document.getElementById('system-status');
            if (systemStatusDiv) {
                systemStatusDiv.innerHTML = '<div class="alert alert-warning">System status unavailable. Core features are operational.</div>';
            }
        }
        
        console.log('✅ Dashboard loaded successfully');
    } catch (error) {
        console.error('❌ Error loading dashboard:', error);
        getToast().error('Failed to load dashboard. Please check the backend.');
        
        // Show error state
        const systemStatusDiv = document.getElementById('system-status');
        if (systemStatusDiv) {
            systemStatusDiv.innerHTML = `<div class="alert alert-error">Failed to load dashboard data: ${error.message}<br>Please refresh or check backend status.</div>`;
        }
        
        // Set default values
        statsElements.forEach(id => {
            const el = document.getElementById(id);
            if (el) el.textContent = '0';
        });
    }
}

// Create Categories Chart
function createCategoriesChart(categories) {
    const ctx = document.getElementById('categories-chart');
    if (!ctx) return;
    
    // Check if Chart.js is loaded
    if (typeof Chart === 'undefined') {
        console.error('Chart.js is not loaded');
        ctx.parentElement.innerHTML = '<p style="color: var(--text-secondary); text-align: center; padding: 20px;">Chart library not loaded</p>';
        return;
    }
    
    if (AppState.charts.categories) {
        AppState.charts.categories.destroy();
    }
    
    const labels = Object.keys(categories);
    const values = Object.values(categories);
    
    if (labels.length === 0) {
        ctx.parentElement.innerHTML = '<p style="color: var(--text-secondary); text-align: center; padding: 20px;">No category data available</p>';
        return;
    }
    
    AppState.charts.categories = new Chart(ctx, {
        type: 'bar',
        data: {
            labels: labels,
            datasets: [{
                label: 'Total Resources',
                data: values,
                backgroundColor: 'rgba(102, 126, 234, 0.6)',
                borderColor: 'rgba(102, 126, 234, 1)',
                borderWidth: 2
            }]
        },
        options: {
            responsive: true,
            maintainAspectRatio: true,
            plugins: {
                legend: { display: false }
            },
            scales: {
                y: { beginAtZero: true }
            }
        }
    });
}

// =============================================================================
// Market Data Loading
// =============================================================================

async function loadMarketData() {
    console.log('💰 Loading market data...');
    
    const marketDiv = document.getElementById('market-data');
    const trendingDiv = document.getElementById('trending-coins');
    const fgDiv = document.getElementById('fear-greed');
    
    if (marketDiv) marketDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Loading market data...</div>';
    if (trendingDiv) trendingDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Loading trending coins...</div>';
    if (fgDiv) fgDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Loading Fear & Greed Index...</div>';
    
    try {
        const response = await fetch('/api/market');
        if (!response.ok) {
            throw new Error(`Market API returned ${response.status}`);
        }
        const data = await response.json();
        
        if (data.cryptocurrencies && data.cryptocurrencies.length > 0) {
            marketDiv.innerHTML = `
                <div style="overflow-x: auto;">
                    <table>
                        <thead>
                            <tr>
                                <th>#</th>
                                <th>Name</th>
                                <th>Price (USD)</th>
                                <th>24h Change</th>
                                <th>24h Volume</th>
                                <th>Market Cap</th>
                            </tr>
                        </thead>
                        <tbody>
                            ${data.cryptocurrencies.map(coin => `
                                <tr>
                                    <td>${coin.rank || '-'}</td>
                                    <td>
                                        ${coin.image ? `<img src="${coin.image}" style="width: 24px; height: 24px; margin-right: 8px; vertical-align: middle;" />` : ''}
                                        <strong>${coin.symbol}</strong> ${coin.name}
                                    </td>
                                    <td>$${formatNumber(coin.price)}</td>
                                    <td style="color: ${coin.change_24h >= 0 ? 'var(--success)' : 'var(--danger)'}; font-weight: 600;">
                                        ${coin.change_24h >= 0 ? '↑' : '↓'} ${Math.abs(coin.change_24h || 0).toFixed(2)}%
                                    </td>
                                    <td>$${formatNumber(coin.volume_24h)}</td>
                                    <td>$${formatNumber(coin.market_cap)}</td>
                                </tr>
                            `).join('')}
                        </tbody>
                    </table>
                </div>
                ${data.total_market_cap ? `<div style="margin-top: 15px; padding: 15px; background: rgba(102, 126, 234, 0.1); border-radius: 10px;">
                    <strong>Total Market Cap:</strong> $${formatNumber(data.total_market_cap)} | 
                    <strong>BTC Dominance:</strong> ${(data.btc_dominance || 0).toFixed(2)}%
                </div>` : ''}
            `;
        } else {
            marketDiv.innerHTML = '<div class="alert alert-warning">No market data available</div>';
        }
        
        // Load trending coins
        try {
            const trendingRes = await fetch('/api/trending');
            if (trendingRes.ok) {
            const trendingData = await trendingRes.json();
            
            if (trendingData.trending && trendingData.trending.length > 0) {
                trendingDiv.innerHTML = `
                    <div class="trending-coins-grid">
                        ${trendingData.trending.map((coin, index) => {
                            const coinSymbol = coin.symbol || coin.id || 'N/A';
                            const coinName = coin.name || 'Unknown';
                            const marketCapRank = coin.market_cap_rank || null;
                            const score = coin.score !== undefined && coin.score !== null ? coin.score : null;
                            const thumb = coin.thumb || null;
                            
                            return `
                            <div class="trending-coin-card">
                                <div class="trending-coin-rank">#${index + 1}</div>
                                <div class="trending-coin-content">
                                    ${thumb ? `<img src="${thumb}" alt="${coinName}" class="trending-coin-thumb" onerror="this.style.display='none'">` : ''}
                                    <div class="trending-coin-info">
                                        <div class="trending-coin-name">
                                            <strong>${coinSymbol}</strong>
                                            <span class="trending-coin-fullname">${coinName}</span>
                                        </div>
                                        ${marketCapRank ? `<div class="trending-coin-meta">Market Cap Rank: #${marketCapRank}</div>` : ''}
                                    </div>
                                </div>
                                ${score !== null && score > 0 ? `
                                    <div class="trending-coin-score">
                                        <div class="trending-coin-score-value">${score.toFixed(2)}</div>
                                        <div class="trending-coin-score-label">Score</div>
                                    </div>
                                ` : ''}
                            </div>
                            `;
                        }).join('')}
                    </div>
                `;
            } else {
                    trendingDiv.innerHTML = '<div class="alert alert-warning">No trending data available</div>';
                }
            } else {
                throw new Error('Trending endpoint not available');
            }
        } catch (trendingError) {
            console.warn('Trending endpoint error:', trendingError);
            trendingDiv.innerHTML = '<div class="alert alert-warning">Trending data unavailable</div>';
        }
        
        // Load Fear & Greed Index with enhanced visualization
        try {
            const sentimentRes = await fetch('/api/sentiment');
            if (sentimentRes.ok) {
            const sentimentData = await sentimentRes.json();
            
            if (sentimentData.fear_greed_index !== undefined) {
                const fgValue = sentimentData.fear_greed_index;
                const fgLabel = sentimentData.fear_greed_label || 'Unknown';
                
                // Determine sentiment classification and colors
                let sentimentClass = '';
                let sentimentIcon = '';
                let fgColor = '';
                let bgGradient = '';
                let description = '';
                
                if (fgValue >= 75) {
                    sentimentClass = 'Extreme Greed';
                    sentimentIcon = '🚀';
                    fgColor = '#10b981';
                    bgGradient = 'linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(5, 150, 105, 0.1) 100%)';
                    description = 'Market shows extreme greed. Consider taking profits.';
                } else if (fgValue >= 50) {
                    sentimentClass = 'Greed';
                    sentimentIcon = '📈';
                    fgColor = '#3b82f6';
                    bgGradient = 'linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(37, 99, 235, 0.1) 100%)';
                    description = 'Market sentiment is bullish. Optimistic outlook.';
                } else if (fgValue >= 25) {
                    sentimentClass = 'Fear';
                    sentimentIcon = '⚠️';
                    fgColor = '#f59e0b';
                    bgGradient = 'linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(217, 119, 6, 0.1) 100%)';
                    description = 'Market shows fear. Caution advised.';
                } else {
                    sentimentClass = 'Extreme Fear';
                    sentimentIcon = '😱';
                    fgColor = '#ef4444';
                    bgGradient = 'linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(220, 38, 38, 0.1) 100%)';
                    description = 'Extreme fear in market. Potential buying opportunity.';
                }
                
                // Calculate progress bar percentage (0-100)
                const progressPercent = fgValue;
                
                // Create circular gauge SVG
                const circumference = 2 * Math.PI * 90; // radius = 90
                const offset = circumference - (progressPercent / 100) * circumference;
                
                fgDiv.innerHTML = `
                    <div style="display: grid; gap: 24px;">
                        <!-- Main Fear & Greed Index Display with Circular Gauge -->
                        <div style="background: ${bgGradient}; border: 2px solid ${fgColor}40; border-radius: 20px; padding: 40px; text-align: center; position: relative; overflow: hidden;">
                            <!-- Background Pattern -->
                            <div style="position: absolute; top: -50%; right: -50%; width: 200%; height: 200%; background: radial-gradient(circle, ${fgColor}15 0%, transparent 70%); pointer-events: none; animation: pulse 3s ease-in-out infinite;"></div>
                            
                            <div style="position: relative; z-index: 1;">
                                <!-- Circular Gauge -->
                                <div style="position: relative; width: 240px; height: 240px; margin: 0 auto 24px;">
                                    <svg width="240" height="240" style="transform: rotate(-90deg);">
                                        <!-- Background Circle -->
                                        <circle cx="120" cy="120" r="90" fill="none" stroke="rgba(255, 255, 255, 0.1)" stroke-width="12" />
                                        <!-- Progress Circle -->
                                        <circle 
                                            cx="120" 
                                            cy="120" 
                                            r="90" 
                                            fill="none" 
                                            stroke="${fgColor}" 
                                            stroke-width="12" 
                                            stroke-linecap="round"
                                            stroke-dasharray="${circumference}" 
                                            stroke-dashoffset="${offset}"
                                            style="transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1); filter: drop-shadow(0 0 10px ${fgColor}60);"
                                        />
                                    </svg>
                                    <!-- Center Content -->
                                    <div style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center;">
                                        <div style="font-size: 48px; margin-bottom: 8px; filter: drop-shadow(0 2px 4px ${fgColor}40);">
                                            ${sentimentIcon}
                                        </div>
                                        <div style="font-size: 56px; font-weight: 900; line-height: 1; background: linear-gradient(135deg, ${fgColor}, ${fgColor}dd); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;">
                                            ${fgValue}
                                        </div>
                                        <div style="font-size: 12px; color: var(--text-secondary); margin-top: 4px;">/ 100</div>
                                    </div>
                                </div>
                                
                                <!-- Classification Label -->
                                <div style="font-size: 28px; font-weight: 700; color: ${fgColor}; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 2px; text-shadow: 0 0 20px ${fgColor}40;">
                                    ${sentimentClass}
                                </div>
                                
                                <!-- Description -->
                                <div style="font-size: 14px; color: var(--text-secondary); max-width: 400px; margin: 0 auto; line-height: 1.6;">
                                    ${description}
                                </div>
                            </div>
                        </div>
                        
                        <!-- Progress Bar Visualization -->
                        <div>
                            <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px;">
                                <span style="font-size: 14px; font-weight: 600; color: var(--text-secondary);">Fear & Greed Index</span>
                                <span style="font-size: 14px; font-weight: 700; color: ${fgColor};">${fgValue}/100</span>
                            </div>
                            
                            <!-- Progress Bar Container -->
                            <div class="sentiment-progress-bar">
                                <!-- Progress Fill with Gradient -->
                                <div class="sentiment-progress-fill" style="width: ${progressPercent}%; background: linear-gradient(90deg, ${fgColor} 0%, ${fgColor}dd 100%); box-shadow: 0 0 20px ${fgColor}40;">
                                    <div style="position: absolute; right: 0; top: 50%; transform: translateY(-50%); width: 4px; height: 60%; background: rgba(255, 255, 255, 0.5); border-radius: 2px;"></div>
                                </div>
                                
                                <!-- Scale Markers -->
                                <div style="position: absolute; top: 0; left: 0; right: 0; bottom: 0; display: flex; justify-content: space-between; align-items: center; padding: 0 8px; pointer-events: none;">
                                    <span style="font-size: 10px; color: var(--text-secondary); font-weight: 600;">0</span>
                                    <span style="font-size: 10px; color: var(--text-secondary); font-weight: 600;">25</span>
                                    <span style="font-size: 10px; color: var(--text-secondary); font-weight: 600;">50</span>
                                    <span style="font-size: 10px; color: var(--text-secondary); font-weight: 600;">75</span>
                                    <span style="font-size: 10px; color: var(--text-secondary); font-weight: 600;">100</span>
                                </div>
                            </div>
                            
                            <!-- Scale Labels -->
                            <div style="display: flex; justify-content: space-between; margin-top: 8px; font-size: 11px; color: var(--text-secondary);">
                                <span>😱 Extreme Fear</span>
                                <span>⚠️ Fear</span>
                                <span>😐 Neutral</span>
                                <span>📈 Greed</span>
                                <span>🚀 Extreme Greed</span>
                            </div>
                        </div>
                        
                        <!-- Additional Info Grid -->
                        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-top: 8px;">
                            <div style="padding: 16px; background: rgba(0, 0, 0, 0.2); border-radius: 12px; text-align: center; border: 1px solid var(--border);">
                                <div style="font-size: 12px; color: var(--text-secondary); margin-bottom: 6px;">Current Value</div>
                                <div style="font-size: 24px; font-weight: 700; color: ${fgColor};">${fgValue}</div>
                            </div>
                            <div style="padding: 16px; background: rgba(0, 0, 0, 0.2); border-radius: 12px; text-align: center; border: 1px solid var(--border);">
                                <div style="font-size: 12px; color: var(--text-secondary); margin-bottom: 6px;">Classification</div>
                                <div style="font-size: 14px; font-weight: 600; color: var(--text-primary);">${fgLabel}</div>
                            </div>
                            ${sentimentData.timestamp ? `
                            <div style="padding: 16px; background: rgba(0, 0, 0, 0.2); border-radius: 12px; text-align: center; border: 1px solid var(--border);">
                                <div style="font-size: 12px; color: var(--text-secondary); margin-bottom: 6px;">Last Update</div>
                                <div style="font-size: 12px; font-weight: 600; color: var(--text-primary);">${new Date(sentimentData.timestamp).toLocaleTimeString('en-US', { hour: '2-digit', minute: '2-digit' })}</div>
                            </div>
                            ` : ''}
                            <div style="padding: 16px; background: rgba(0, 0, 0, 0.2); border-radius: 12px; text-align: center; border: 1px solid var(--border);">
                                <div style="font-size: 12px; color: var(--text-secondary); margin-bottom: 6px;">Source</div>
                                <div style="font-size: 12px; font-weight: 600; color: var(--text-primary);">Alternative.me</div>
                            </div>
                        </div>
                        
                        <!-- Market Interpretation -->
                        <div style="padding: 20px; background: rgba(0, 0, 0, 0.3); border-radius: 12px; border-left: 4px solid ${fgColor};">
                            <div style="display: flex; align-items: start; gap: 12px;">
                                <div style="font-size: 24px;">💡</div>
                                <div>
                                    <div style="font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px;">Market Interpretation</div>
                                    <div style="font-size: 13px; color: var(--text-secondary); line-height: 1.6;">
                                        ${fgValue >= 75 ? 
                                            'The market is showing extreme greed. Historically, this may indicate a potential market top. Consider taking profits and being cautious with new positions.' :
                                          fgValue >= 50 ?
                                            'Market sentiment is positive with greed prevailing. This suggests bullish momentum, but monitor for overbought conditions.' :
                                          fgValue >= 25 ?
                                            'Fear is present in the market. This could indicate a buying opportunity for long-term investors, but exercise caution.' :
                                            'Extreme fear dominates the market. Historically, this has often been a good time to buy, but ensure you have a solid risk management strategy.'}
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                `;
            } else {
                    fgDiv.innerHTML = '<div class="alert alert-warning">Fear & Greed Index unavailable</div>';
                }
        } else {
                throw new Error('Sentiment endpoint not available');
            }
        } catch (fgError) {
            console.warn('Fear & Greed endpoint error:', fgError);
            fgDiv.innerHTML = `
                <div style="padding: 40px; text-align: center;">
                    <div style="font-size: 48px; margin-bottom: 16px;">⚠️</div>
                    <div style="font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px;">Fear & Greed Index Unavailable</div>
                    <div style="font-size: 14px; color: var(--text-secondary);">Unable to fetch sentiment data at this time. Please try again later.</div>
                </div>
            `;
        }
        
        console.log('✅ Market data loaded successfully');
    } catch (error) {
        console.error('❌ Error loading market data:', error);
        getToast().error('Failed to load market data');
        
        if (marketDiv) marketDiv.innerHTML = `<div class="alert alert-error">Error loading market data: ${error.message}</div>`;
        if (trendingDiv) trendingDiv.innerHTML = '<div class="alert alert-error">Error loading trending coins</div>';
        if (fgDiv) fgDiv.innerHTML = '<div class="alert alert-error">Error loading Fear & Greed Index</div>';
    }
}

// =============================================================================
// News Loading (FIXED)
// =============================================================================

async function fetchNewsFromAPI() {
    console.log('📥 Fetching news from CryptoCompare API...');
    getToast().info('Fetching latest news from CryptoCompare...');
    
    const newsListDiv = document.getElementById('news-list');
    if (!newsListDiv) return;
    
    newsListDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Fetching news from CryptoCompare API...</div>';
    
    try {
        const response = await fetch('/api/news/fetch?limit=50', { method: 'POST' });
        if (!response.ok) {
            throw new Error(`Fetch API returned ${response.status}`);
        }
        
        const data = await response.json();
        console.log('Fetch news result:', data);
        
        if (data.success) {
            getToast().success(`Successfully fetched and saved ${data.saved} news articles!`);
            // Reload news list
            loadNews();
        } else {
            getToast().error(`Failed to fetch news: ${data.error}`);
            newsListDiv.innerHTML = `<div class="alert alert-error">Error: ${data.error}</div>`;
        }
    } catch (error) {
        console.error('❌ Error fetching news:', error);
        getToast().error('Failed to fetch news from API');
        newsListDiv.innerHTML = `<div class="alert alert-error">Error fetching news: ${error.message}</div>`;
    }
}

// Utility function to format time ago
function formatTimeAgo(dateString) {
    if (!dateString) return 'Unknown time';
    
    const date = new Date(dateString);
    const now = new Date();
    const diffMs = now - date;
    const diffSecs = Math.floor(diffMs / 1000);
    const diffMins = Math.floor(diffSecs / 60);
    const diffHours = Math.floor(diffMins / 60);
    const diffDays = Math.floor(diffHours / 24);
    
    if (diffSecs < 60) return 'Just now';
    if (diffMins < 60) return `${diffMins} minute${diffMins > 1 ? 's' : ''} ago`;
    if (diffHours < 24) return `${diffHours} hour${diffHours > 1 ? 's' : ''} ago`;
    if (diffDays < 7) return `${diffDays} day${diffDays > 1 ? 's' : ''} ago`;
    
    return date.toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: date.getFullYear() !== now.getFullYear() ? 'numeric' : undefined });
}

async function loadNews() {
    console.log('📰 Loading news...');
    
    const newsListDiv = document.getElementById('news-list');
    if (!newsListDiv) return;
    
    newsListDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Loading news...</div>';
    
    try {
        const response = await fetch('/api/news?limit=50');
        if (!response.ok) {
            throw new Error(`News API returned ${response.status}`);
        }
        
        const data = await response.json();
        console.log('News data:', data);
        
        if (data.success && data.news && data.news.length > 0) {
            // Sort by latest timestamp (published_date or analyzed_at)
            const sortedNews = [...data.news].sort((a, b) => {
                const dateA = new Date(a.published_date || a.analyzed_at || 0);
                const dateB = new Date(b.published_date || b.analyzed_at || 0);
                return dateB - dateA;
            });
            
            newsListDiv.innerHTML = `
                <div style="display: grid; gap: 20px;">
                    ${sortedNews.map(article => {
                        const timeAgo = formatTimeAgo(article.published_date || article.analyzed_at);
                        const symbols = Array.isArray(article.related_symbols) 
                            ? article.related_symbols 
                            : (typeof article.related_symbols === 'string' 
                                ? (article.related_symbols.startsWith('[') 
                                    ? JSON.parse(article.related_symbols) 
                                    : article.related_symbols.split(',').map(s => s.trim()))
                                : []);
                        
                        return `
                        <div class="news-card" onclick="${article.url ? `window.open('${article.url}', '_blank')` : ''}">
                            <div class="news-card-image">
                                <svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                                    <path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"></path>
                                    <path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"></path>
                                </svg>
                            </div>
                            <div class="news-card-content">
                                <h4 class="news-card-title">
                                    ${article.url ? `<a href="${article.url}" target="_blank">${article.title || 'Untitled'}</a>` : (article.title || 'Untitled')}
                                </h4>
                                ${article.content ? `<p class="news-card-excerpt">${article.content.substring(0, 200)}${article.content.length > 200 ? '...' : ''}</p>` : ''}
                                <div class="news-card-meta">
                                    <div class="news-card-source">
                                        <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                                            <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"></path>
                                            <polyline points="15 3 21 3 21 9"></polyline>
                                            <line x1="10" y1="14" x2="21" y2="3"></line>
                                        </svg>
                                        ${article.source || 'Unknown'}
                                    </div>
                                    <div class="news-card-time">
                                        <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                                            <circle cx="12" cy="12" r="10"></circle>
                                            <polyline points="12 6 12 12 16 14"></polyline>
                                        </svg>
                                        <span class="time-ago">${timeAgo}</span>
                                    </div>
                                    ${article.sentiment_label ? `<span class="sentiment-badge ${article.sentiment_label.toLowerCase()}">${article.sentiment_label}</span>` : ''}
                                </div>
                                ${symbols.length > 0 ? `
                                    <div class="news-card-symbols" style="margin-top: 10px;">
                                        ${symbols.slice(0, 5).map(symbol => `<span class="symbol-badge">${symbol}</span>`).join('')}
                                        ${symbols.length > 5 ? `<span class="symbol-badge">+${symbols.length - 5}</span>` : ''}
                                    </div>
                                ` : ''}
                            </div>
                        </div>
                    `;
                    }).join('')}
                </div>
                <div style="margin-top: 20px; padding: 15px; background: rgba(102, 126, 234, 0.1); border-radius: 10px; text-align: center; font-size: 13px; color: var(--text-secondary);">
                    Showing ${sortedNews.length} article${sortedNews.length !== 1 ? 's' : ''}${data.source ? ` from ${data.source}` : ''}
                </div>
            `;
            
            console.log('✅ News loaded successfully');
            getToast().success(`Loaded ${sortedNews.length} news articles`);
    } else {
            newsListDiv.innerHTML = '<div class="alert alert-warning">No news articles available at the moment. Click "Fetch Latest News" to load articles.</div>';
            console.warn('No news data available');
        }
    } catch (error) {
        console.error('❌ Error loading news:', error);
        getToast().error('Failed to load news');
        newsListDiv.innerHTML = `<div class="alert alert-error">Error loading news: ${error.message}<br>Please check your internet connection and try again.</div>`;
    }
}

// =============================================================================
// Models Loading
// =============================================================================

async function loadModels() {
    console.log('🤖 Loading models...');
    
    const modelsStatusDiv = document.getElementById('models-status');
    const modelsListDiv = document.getElementById('models-list');
    
    if (modelsStatusDiv) modelsStatusDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Loading models status...</div>';
    if (modelsListDiv) modelsListDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Loading models list...</div>';
    
    try {
        // Load models status
        const statusRes = await fetch('/api/models/status');
        if (statusRes.ok) {
            const statusData = await statusRes.json();
            
            // Handle different response formats from API
            const isOk = statusData.ok || statusData.success || statusData.status === 'ok';
            const pipelinesLoaded = statusData.pipelines_loaded || statusData.models_loaded || 0;
            const availableModels = statusData.available_models || statusData.loaded_models || [];
            const modelsCount = Array.isArray(availableModels) ? availableModels.length : (availableModels || 0);
            const hfMode = statusData.hf_mode || 'unknown';
            const transformersAvailable = statusData.transformers_available !== undefined ? statusData.transformers_available : false;
            const statusMessage = statusData.status_message || (isOk ? 'Active' : 'Partial');
            
            // Determine if lazy loading is active
            const isLazyLoading = hfMode === 'public' && pipelinesLoaded === 0 && modelsCount > 0;
            const alertClass = isLazyLoading ? 'alert-info' : (isOk ? 'alert-success' : 'alert-warning');
            const statusIcon = isLazyLoading ? 'ℹ️' : (isOk ? '✅' : '⚠️');
            
            modelsStatusDiv.innerHTML = `
                <div class="alert ${alertClass}">
                    <strong>Status:</strong> ${statusIcon} ${statusMessage}<br>
                    <strong>Models Configured:</strong> ${modelsCount} (Lazy Loading)<br>
                    <strong>Models Loaded:</strong> ${pipelinesLoaded}<br>
                    <strong>HF Mode:</strong> ${hfMode}<br>
                    <strong>Transformers:</strong> ${transformersAvailable ? '✅ Available' : '❌ Not Available'}
                    ${isLazyLoading ? '<br><br><em>💡 Models will load automatically on first use (sentiment analysis, etc.)</em>' : ''}
                </div>
            `;
            
            // Update stat-models in dashboard and sidebar with actual loaded count
            const modelsStatEl = document.getElementById('stat-models');
            const sidebarModelsEl = document.getElementById('sidebar-models');
            // Use pipelines_loaded if available, otherwise use modelsCount
            const displayCount = pipelinesLoaded > 0 ? pipelinesLoaded : modelsCount;
            if (modelsStatEl) {
                modelsStatEl.textContent = displayCount;
            }
            if (sidebarModelsEl) {
                sidebarModelsEl.textContent = displayCount;
            }
                        } else {
            throw new Error('Models status endpoint not available');
        }
        
        // Load models list
        const listRes = await fetch('/api/models/list');
        if (listRes.ok) {
            const listData = await listRes.json();
            
            // Update sidebar models count
            const sidebarModels = document.getElementById('sidebar-models');
            const modelsStatEl = document.getElementById('stat-models');
            const totalModels = listData.total_models || (listData.models ? listData.models.length : 0);
            const loadedModels = listData.models ? listData.models.filter(m => m.loaded).length : 0;
            
            if (sidebarModels) {
                sidebarModels.textContent = loadedModels > 0 ? loadedModels : totalModels;
            }
            if (modelsStatEl) {
                modelsStatEl.textContent = loadedModels > 0 ? loadedModels : totalModels;
            }
            
            if (listData.models && listData.models.length > 0) {
                modelsListDiv.innerHTML = `
                    <div style="overflow-x: auto;">
                        <table>
                            <thead>
                                <tr>
                                    <th>Model ID</th>
                                    <th>Task</th>
                                    <th>Category</th>
                                    <th>Status</th>
                                </tr>
                            </thead>
                            <tbody>
                                ${listData.models.map(model => {
                                    const modelId = model.model_id || model.id || model.key || 'N/A';
                                    const task = model.task || 'N/A';
                                    const category = model.category || 'N/A';
                                    const isLoaded = model.loaded === true;
                                    const hasError = model.error && model.error.length > 0;
                                    const statusClass = isLoaded ? 'available' : (hasError ? 'error' : 'standby');
                                    const statusText = isLoaded ? '✅ Loaded' : (hasError ? '❌ Error' : '⏸️ Standby');
                                    return `
                                    <tr>
                                        <td><strong>${modelId}</strong></td>
                                        <td>${task}</td>
                                        <td>${category}</td>
                                        <td><span class="model-status ${statusClass}">${statusText}</span></td>
                                    </tr>
                                `;
                                }).join('')}
                            </tbody>
                        </table>
                    </div>
                `;
            } else {
                modelsListDiv.innerHTML = '<div class="alert alert-warning">No models available</div>';
            }
        } else {
            throw new Error('Models list endpoint not available');
        }
        
        console.log('✅ Models loaded successfully');
    } catch (error) {
        console.error('❌ Error loading models:', error);
        getToast().error('Failed to load models');
        
        if (modelsStatusDiv) modelsStatusDiv.innerHTML = `<div class="alert alert-error">Error loading models status: ${error.message}</div>`;
        if (modelsListDiv) modelsListDiv.innerHTML = '<div class="alert alert-error">Error loading models list</div>';
    }
}

async function initializeModels() {
    getToast().info('Initializing models... This may take a moment.');
    
    const modelsStatusDiv = document.getElementById('models-status');
    if (modelsStatusDiv) {
        modelsStatusDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Initializing models...</div>';
    }
    
    try {
        const response = await fetch('/api/models/initialize', { method: 'POST' });
        if (!response.ok) {
            throw new Error(`Initialize returned ${response.status}`);
        }
        
        const data = await response.json();
        
        // Handle different response formats
        const isOk = data.status === 'ok' || data.ok === true || (data.models_loaded && data.models_loaded > 0);
        const modelsLoaded = data.models_loaded || data.pipelines_loaded || 0;
        const modelsFailed = data.models_failed || data.pipelines_failed || 0;
        
        if (isOk) {
            getToast().success(`Models initialized successfully! ${modelsLoaded} model(s) loaded.`);
        } else if (modelsLoaded > 0) {
            getToast().warning(`Models partially initialized: ${modelsLoaded} loaded, ${modelsFailed} failed`);
        } else {
            getToast().warning('No models loaded. Using fallback mode.');
        }
        
        // Reload models list and status
        await loadModels();
    } catch (error) {
        console.error('Error initializing models:', error);
        getToast().error('Failed to initialize models: ' + error.message);
        
        if (modelsStatusDiv) {
            modelsStatusDiv.innerHTML = `<div class="alert alert-error">Error initializing models: ${error.message}</div>`;
        }
    }
}

// =============================================================================
// Settings
// =============================================================================

function loadSettings() {
    const apiInfoDiv = document.getElementById('api-info');
    if (apiInfoDiv) {
        apiInfoDiv.innerHTML = `
            <div class="alert alert-info">
                <strong>API Base URL:</strong> ${window.location.origin}<br>
                <strong>Documentation:</strong> <a href="/docs" target="_blank" style="color: var(--primary);">/docs</a><br>
                <strong>Health Check:</strong> <a href="/health" target="_blank" style="color: var(--primary);">/health</a>
                </div>
            `;
    }
}

function saveSettings() {
    getToast().success('Settings saved successfully!');
}

function toggleTheme() {
    document.body.classList.toggle('light-theme');
    const themeSelect = document.getElementById('theme-select');
    if (themeSelect) {
        themeSelect.value = document.body.classList.contains('light-theme') ? 'light' : 'dark';
    }
}

function changeTheme(theme) {
    if (theme === 'light') {
        document.body.classList.add('light-theme');
            } else {
        document.body.classList.remove('light-theme');
    }
}

// =============================================================================
// Sentiment Analysis Functions with Visualizations
// =============================================================================

// Create sentiment gauge chart
function createSentimentGauge(containerId, sentimentValue, sentimentClass) {
    const container = document.getElementById(containerId);
    if (!container) return null;
    
    // Clear previous chart
    container.innerHTML = '';
    
    // Create canvas
    const canvas = document.createElement('canvas');
    canvas.id = `gauge-${containerId}`;
    canvas.width = 300;
    canvas.height = 150;
    container.appendChild(canvas);
    
    // Calculate gauge value (0-100, where 50 is neutral)
    let gaugeValue = 50; // neutral
    if (sentimentClass === 'bullish' || sentimentClass === 'positive') {
        gaugeValue = 50 + (sentimentValue * 50); // 50-100
    } else if (sentimentClass === 'bearish' || sentimentClass === 'negative') {
        gaugeValue = 50 - (sentimentValue * 50); // 0-50
    }
    gaugeValue = Math.max(0, Math.min(100, gaugeValue));
    
    const ctx = canvas.getContext('2d');
    const centerX = canvas.width / 2;
    const centerY = canvas.height / 2;
    const radius = 60;
    
    // Draw gauge background (semi-circle)
    ctx.beginPath();
    ctx.arc(centerX, centerY + 20, radius, Math.PI, 0, false);
    ctx.lineWidth = 20;
    ctx.strokeStyle = 'rgba(31, 41, 55, 0.6)';
    ctx.stroke();
    
    // Draw gauge fill
    const startAngle = Math.PI;
    const endAngle = Math.PI + (Math.PI * (gaugeValue / 100));
    
    ctx.beginPath();
    ctx.arc(centerX, centerY + 20, radius, startAngle, endAngle, false);
    ctx.lineWidth = 20;
    ctx.lineCap = 'round';
    
    let gaugeColor;
    if (gaugeValue >= 70) gaugeColor = '#10b981'; // green
    else if (gaugeValue >= 50) gaugeColor = '#3b82f6'; // blue
    else if (gaugeValue >= 30) gaugeColor = '#f59e0b'; // yellow
    else gaugeColor = '#ef4444'; // red
    
    ctx.strokeStyle = gaugeColor;
    ctx.stroke();
    
    // Draw value text
    ctx.fillStyle = '#f9fafb';
    ctx.font = 'bold 32px Inter, sans-serif';
    ctx.textAlign = 'center';
    ctx.textBaseline = 'middle';
    ctx.fillText(Math.round(gaugeValue), centerX, centerY + 15);
    
    // Draw labels
    ctx.fillStyle = '#9ca3af';
    ctx.font = '12px Inter, sans-serif';
    ctx.textAlign = 'left';
    ctx.fillText('Bearish', 20, centerY + 50);
    ctx.textAlign = 'right';
    ctx.fillText('Bullish', canvas.width - 20, centerY + 50);
    
    return canvas;
}

// Get trend arrow SVG
function getTrendArrow(sentimentClass) {
    const color = sentimentClass === 'bullish' ? 'var(--success)' : 
                  sentimentClass === 'bearish' ? 'var(--danger)' : 'var(--warning)';
    const rotation = sentimentClass === 'bearish' ? 'rotate(180deg)' : 
                     sentimentClass === 'neutral' ? 'rotate(90deg)' : '';
    
    return `
        <svg class="sentiment-trend-arrow ${sentimentClass}" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="${color}" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="transform: ${rotation};">
            <polyline points="18 15 12 9 6 15"></polyline>
        </svg>
    `;
}

// Create confidence bar
function createConfidenceBar(confidence) {
    const confidencePercent = Math.round(confidence * 100);
    return `
        <div class="confidence-bar-container">
            <div class="confidence-bar-label">
                <span>Model Confidence</span>
                <span>${confidencePercent}%</span>
            </div>
            <div class="confidence-bar">
                <div class="confidence-bar-fill" style="width: ${confidencePercent}%;"></div>
            </div>
        </div>
    `;
}

async function analyzeGlobalSentiment() {
    getToast().info('Analyzing global market sentiment...');
    const resultDiv = document.getElementById('global-sentiment-result');
    if (resultDiv) {
        resultDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Analyzing...</div>';
    }
    
    try {
        const response = await fetch('/api/sentiment/analyze', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                text: 'Overall cryptocurrency market sentiment analysis',
                mode: 'crypto'
            })
        });
        
        if (!response.ok) throw new Error(`API returned ${response.status}`);
        
        const data = await response.json();
        
        if (data.available && data.sentiment) {
            const sentiment = data.sentiment.toUpperCase();
            const confidence = data.confidence || 0;
            const sentimentClass = sentiment.includes('POSITIVE') || sentiment.includes('BULLISH') ? 'bullish' : 
                                  sentiment.includes('NEGATIVE') || sentiment.includes('BEARISH') ? 'bearish' : 'neutral';
        
        resultDiv.innerHTML = `
                <div class="ai-result-card">
                    <div class="ai-result-header">
                        <h4>Global Market Sentiment</h4>
                        <span class="sentiment-badge ${sentimentClass}">${sentiment}</span>
                    </div>
                    <div class="sentiment-gauge-container" id="global-sentiment-gauge"></div>
                    <div style="text-align: center; margin: 20px 0;">
                        ${getTrendArrow(sentimentClass)}
                        <span style="font-size: 18px; font-weight: 700; color: var(--${sentimentClass === 'bullish' ? 'success' : sentimentClass === 'bearish' ? 'danger' : 'warning'}); margin: 0 10px;">
                            ${sentiment}
                        </span>
                        ${getTrendArrow(sentimentClass)}
                    </div>
                    ${createConfidenceBar(confidence)}
                    <p style="margin-top: 15px; color: var(--text-secondary); text-align: center;">
                        <strong>Model:</strong> ${data.model || 'AI Sentiment Analysis'} | 
                        <strong>Engine:</strong> ${data.engine || 'N/A'}
                    </p>
            </div>
        `;
        
        // Create gauge chart after DOM update
        setTimeout(() => {
            createSentimentGauge('global-sentiment-gauge', confidence, sentimentClass);
        }, 100);
        
            getToast().success('Sentiment analysis complete!');
        } else {
            resultDiv.innerHTML = '<div class="alert alert-warning">Sentiment analysis unavailable</div>';
        }
    } catch (error) {
        console.error('Error analyzing sentiment:', error);
        resultDiv.innerHTML = `<div class="alert alert-error">Error: ${error.message}</div>`;
        getToast().error('Failed to analyze sentiment');
    }
}

async function analyzeAssetSentiment() {
    const symbol = document.getElementById('asset-symbol')?.value;
    const text = document.getElementById('asset-sentiment-text')?.value;
    
    if (!symbol) {
        getToast().warning('Please select a trading pair');
        return;
    }
    
    getToast().info('Analyzing asset sentiment...');
    const resultDiv = document.getElementById('asset-sentiment-result');
    if (resultDiv) {
        resultDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Analyzing...</div>';
    }
    
    try {
        const response = await fetch('/api/sentiment/analyze', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                text: text || `Sentiment analysis for ${symbol}`,
                mode: 'crypto',
                symbol: symbol
            })
        });
        
        if (!response.ok) throw new Error(`API returned ${response.status}`);
        
        const data = await response.json();
        
        if (data.available && data.sentiment) {
            const sentiment = data.sentiment.toUpperCase();
            const confidence = data.confidence || 0;
            const sentimentClass = sentiment.includes('POSITIVE') || sentiment.includes('BULLISH') ? 'bullish' : 
                                  sentiment.includes('NEGATIVE') || sentiment.includes('BEARISH') ? 'bearish' : 'neutral';
            
            resultDiv.innerHTML = `
                <div class="ai-result-card">
                    <div class="ai-result-header">
                        <h4>${symbol} Sentiment</h4>
                        <span class="sentiment-badge ${sentimentClass}">${sentiment}</span>
                    </div>
                    <div class="sentiment-gauge-container" id="asset-sentiment-gauge"></div>
                    <div style="text-align: center; margin: 20px 0;">
                        ${getTrendArrow(sentimentClass)}
                        <span style="font-size: 18px; font-weight: 700; color: var(--${sentimentClass === 'bullish' ? 'success' : sentimentClass === 'bearish' ? 'danger' : 'warning'}); margin: 0 10px;">
                            ${sentiment}
                        </span>
                        ${getTrendArrow(sentimentClass)}
                    </div>
                    ${createConfidenceBar(confidence)}
                    <p style="margin-top: 15px; color: var(--text-secondary); text-align: center;">
                        <strong>Model:</strong> ${data.model || 'AI Sentiment Analysis'} | 
                        <strong>Engine:</strong> ${data.engine || 'N/A'}
                    </p>
                </div>
            `;
            
            // Create gauge chart after DOM update
            setTimeout(() => {
                createSentimentGauge('asset-sentiment-gauge', confidence, sentimentClass);
            }, 100);
            
            getToast().success('Asset sentiment analysis complete!');
        } else {
            resultDiv.innerHTML = '<div class="alert alert-warning">Sentiment analysis unavailable</div>';
        }
    } catch (error) {
        console.error('Error analyzing asset sentiment:', error);
        resultDiv.innerHTML = `<div class="alert alert-error">Error: ${error.message}</div>`;
        getToast().error('Failed to analyze asset sentiment');
    }
}

async function analyzeSentiment() {
    const text = document.getElementById('sentiment-text')?.value;
    const mode = document.getElementById('sentiment-mode')?.value || 'auto';
    
    if (!text || text.trim() === '') {
        getToast().warning('Please enter text to analyze');
        return;
    }
    
    getToast().info('Analyzing sentiment...');
    const resultDiv = document.getElementById('sentiment-result');
    if (resultDiv) {
        resultDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Analyzing...</div>';
    }
    
    try {
        const response = await fetch('/api/sentiment/analyze', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ text, mode })
        });
        
        if (!response.ok) throw new Error(`API returned ${response.status}`);
        
        const data = await response.json();
        
        if (data.available && data.sentiment) {
            const sentiment = data.sentiment.toUpperCase();
            const confidence = data.confidence || 0;
            const sentimentClass = sentiment.includes('POSITIVE') || sentiment.includes('BULLISH') ? 'bullish' : 
                                  sentiment.includes('NEGATIVE') || sentiment.includes('BEARISH') ? 'bearish' : 'neutral';
            
            resultDiv.innerHTML = `
                <div class="ai-result-card">
                    <div class="ai-result-header">
                        <h4>Sentiment Analysis Result</h4>
                        <span class="sentiment-badge ${sentimentClass}">${sentiment}</span>
                    </div>
                    <div class="sentiment-gauge-container" id="sentiment-gauge"></div>
                    <div style="text-align: center; margin: 20px 0;">
                        ${getTrendArrow(sentimentClass)}
                        <span style="font-size: 18px; font-weight: 700; color: var(--${sentimentClass === 'bullish' ? 'success' : sentimentClass === 'bearish' ? 'danger' : 'warning'}); margin: 0 10px;">
                            ${sentiment}
                        </span>
                        ${getTrendArrow(sentimentClass)}
                    </div>
                    ${createConfidenceBar(confidence)}
                    <p style="margin-top: 15px; color: var(--text-secondary); text-align: center;">
                        <strong>Text:</strong> ${text.substring(0, 100)}${text.length > 100 ? '...' : ''}<br>
                        <strong>Model:</strong> ${data.model || 'AI Sentiment Analysis'} | 
                        <strong>Engine:</strong> ${data.engine || 'N/A'}
                    </p>
            </div>
        `;
        
        // Create gauge chart after DOM update
        setTimeout(() => {
            createSentimentGauge('sentiment-gauge', confidence, sentimentClass);
        }, 100);
        
            getToast().success('Sentiment analysis complete!');
        } else {
            resultDiv.innerHTML = '<div class="alert alert-warning">Sentiment analysis unavailable</div>';
        }
    } catch (error) {
        console.error('Error analyzing sentiment:', error);
        resultDiv.innerHTML = `<div class="alert alert-error">Error: ${error.message}</div>`;
        getToast().error('Failed to analyze sentiment');
    }
}

// =============================================================================
// Trading Assistant
// =============================================================================

async function runTradingAssistant() {
    const symbol = document.getElementById('trading-symbol')?.value;
    const context = document.getElementById('trading-context')?.value;
    
    if (!symbol) {
        getToast().warning('Please select a trading symbol');
        return;
    }
    
    getToast().info('Generating trading signal...');
    const resultDiv = document.getElementById('trading-assistant-result');
    if (resultDiv) {
        resultDiv.innerHTML = '<div class="loading"><div class="spinner"></div> Analyzing...</div>';
    }
    
    try {
        const response = await fetch('/api/trading/decision', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ 
                symbol: symbol,
                context: context || `Trading decision for ${symbol}`
            })
        });
        
        if (!response.ok) throw new Error(`API returned ${response.status}`);
        
        const data = await response.json();
        
        if (data.decision) {
            const decision = data.decision.toUpperCase();
            const confidence = data.confidence ? (data.confidence * 100).toFixed(2) : 'N/A';
            const decisionClass = decision === 'BUY' ? 'bullish' : decision === 'SELL' ? 'bearish' : 'neutral';
            
            resultDiv.innerHTML = `
                <div class="ai-result-card">
                    <div class="ai-result-header">
                        <h4>${symbol} Trading Signal</h4>
                        <span class="sentiment-badge ${decisionClass}">${decision}</span>
                </div>
                    <div style="display: flex; gap: 15px; justify-content: center;">
                        <div class="ai-result-metric">
                            <div class="ai-result-metric-value" style="color: var(--${decisionClass === 'bullish' ? 'success' : decisionClass === 'bearish' ? 'danger' : 'warning'});">${confidence}%</div>
                            <div class="ai-result-metric-label">Confidence</div>
                        </div>
                        </div>
                    ${data.reasoning ? `<p style="margin-top: 15px; color: var(--text-secondary);"><strong>Reasoning:</strong> ${data.reasoning}</p>` : ''}
                    <p style="margin-top: 10px; color: var(--text-muted); font-size: 12px;">
                        <strong>Model:</strong> ${data.model || 'AI Trading Assistant'}
                    </p>
            </div>
        `;
            getToast().success('Trading signal generated!');
        } else {
            resultDiv.innerHTML = '<div class="alert alert-warning">Trading signal unavailable</div>';
        }
    } catch (error) {
        console.error('Error generating trading signal:', error);
        resultDiv.innerHTML = `<div class="alert alert-error">Error: ${error.message}</div>`;
        getToast().error('Failed to generate trading signal');
    }
}

// =============================================================================
// Utility Functions
// =============================================================================

function formatNumber(num) {
    if (num === null || num === undefined) return '0';
    if (num >= 1e12) return (num / 1e12).toFixed(2) + 'T';
    if (num >= 1e9) return (num / 1e9).toFixed(2) + 'B';
    if (num >= 1e6) return (num / 1e6).toFixed(2) + 'M';
    if (num >= 1e3) return (num / 1e3).toFixed(2) + 'K';
    return num.toFixed(2);
}

// =============================================================================
// Export for global access
// =============================================================================

window.AppState = AppState;
// ToastManager is loaded from toast.js as window.toastManager
window.toggleSidebar = toggleSidebar;
window.switchTab = switchTab;
window.refreshCurrentTab = refreshCurrentTab;
window.loadDashboard = loadDashboard;
window.loadMarketData = loadMarketData;
window.loadModels = loadModels;
window.initializeModels = initializeModels;
window.loadNews = loadNews;
window.fetchNewsFromAPI = fetchNewsFromAPI;
window.loadSettings = loadSettings;
window.saveSettings = saveSettings;
window.toggleTheme = toggleTheme;
window.changeTheme = changeTheme;
window.analyzeGlobalSentiment = analyzeGlobalSentiment;
window.analyzeAssetSentiment = analyzeAssetSentiment;
window.analyzeSentiment = analyzeSentiment;
window.runTradingAssistant = runTradingAssistant;
window.formatNumber = formatNumber;

// ===== DIAGNOSTICS FUNCTIONS =====
// Export diagnostic functions to window for onclick handlers

async function runDiagnostic() {
    const runBtn = document.getElementById('run-diagnostics-btn');
    const progressDiv = document.getElementById('test-progress');
    const outputPre = document.getElementById('diagnostic-output');
    const summaryDiv = document.getElementById('diagnostic-summary');

    // Disable button and show progress
    runBtn.disabled = true;
    runBtn.textContent = 'Running...';
    progressDiv.style.display = 'block';
    summaryDiv.style.display = 'none';
    outputPre.textContent = '';

    try {
        const response = await fetch('/api/diagnostics/run-test', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            }
        });

        const data = await response.json();

        // Display output with color coding
        outputPre.innerHTML = colorCodeOutput(data.output);

        // Update summary
        updateDiagnosticSummary(data);

        // Store last run time
        localStorage.setItem('lastDiagnosticRun', data.timestamp);

        // Update status cards
        updateStatusCards(data.summary);

        // Show summary
        summaryDiv.style.display = 'block';

        // Auto-scroll to bottom
        outputPre.scrollTop = outputPre.scrollHeight;

    } catch (error) {
        console.error('Diagnostic error:', error);
        outputPre.innerHTML = `<span style="color: #ef4444;">❌ Error running diagnostic: ${error.message}</span>`;
        showToast('❌ Diagnostic failed: ' + error.message, 'error');
    } finally {
        // Re-enable button
        runBtn.disabled = false;
        runBtn.innerHTML = '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="display: inline-block; vertical-align: middle; margin-right: 6px;"><polygon points="13 2 3 14 12 14 11 22 21 10 12 10 13 2"></polygon></svg>▶️ Run Full Diagnostic';
        progressDiv.style.display = 'none';
    }
}

function colorCodeOutput(output) {
    if (!output) return '';

    return output
        .replace(/✅/g, '<span style="color: #10b981;">✅</span>')
        .replace(/❌/g, '<span style="color: #ef4444;">❌</span>')
        .replace(/⚠️/g, '<span style="color: #f59e0b;">⚠️</span>')
        .replace(/🔍/g, '<span style="color: #3b82f6;">🔍</span>')
        .replace(/📦/g, '<span style="color: #8b5cf6;">📦</span>')
        .replace(/🌐/g, '<span style="color: #06b6d4;">🌐</span>')
        .replace(/🧪/g, '<span style="color: #84cc16;">🧪</span>')
        .replace(/📄/g, '<span style="color: #f97316;">📄</span>')
        .replace(/💡/g, '<span style="color: #eab308;">💡</span>')
        .replace(/⏭️/g, '<span style="color: #6b7280;">⏭️</span>')
        .split('\n').join('<br>');
}

function updateDiagnosticSummary(data) {
    document.getElementById('summary-duration').textContent = `${data.duration_seconds}s`;
    document.getElementById('summary-passed').textContent = data.summary.transformers_available && data.summary.hf_hub_connected ? '2/2' : '1/2';
    document.getElementById('summary-failed').textContent = (!data.summary.transformers_available || !data.summary.hf_hub_connected) ? '1/2' : '0/2';
    document.getElementById('summary-critical').textContent = data.summary.critical_issues.length;

    const fixesDiv = document.getElementById('suggested-fixes');
    if (data.summary.critical_issues.length > 0) {
        fixesDiv.innerHTML = '<h4>🔧 Suggested Fixes:</h4><ul>' +
            data.summary.critical_issues.map(issue =>
                `<li>${issue}</li>`
            ).join('') + '</ul>';
    } else {
        fixesDiv.innerHTML = '<p style="color: #10b981;">✅ No critical issues found</p>';
    }
}

function updateStatusCards(summary) {
    const transformersEl = document.getElementById('transformers-status-value');
    if (transformersEl) {
        transformersEl.textContent = summary.transformers_available ? 'Available' : 'Not Available';
        transformersEl.style.color = summary.transformers_available ? 'var(--success)' : 'var(--danger)';
    }

    const hfEl = document.getElementById('hf-status-value');
    if (hfEl) {
        hfEl.textContent = summary.hf_hub_connected ? 'Connected' : 'Disconnected';
        hfEl.style.color = summary.hf_hub_connected ? 'var(--success)' : 'var(--danger)';
    }

    const modelsEl = document.getElementById('models-status-value');
    if (modelsEl) {
        modelsEl.textContent = summary.models_loaded || 0;
    }

    const lastRun = localStorage.getItem('lastDiagnosticRun');
    const lastTestEl = document.getElementById('last-test-value');
    if (lastTestEl) {
        lastTestEl.textContent = lastRun ? new Date(lastRun).toLocaleString() : 'Never';
    }
}

async function refreshDiagnosticStatus() {
    try {
        // Get models status to determine transformers and HF hub status
        const modelsResponse = await fetch('/api/models/status');
        if (modelsResponse.ok) {
            const modelsData = await modelsResponse.json();
            
            // Update status cards
            const transformersStatusEl = document.getElementById('transformers-status-value');
            const hfStatusEl = document.getElementById('hf-status-value');
            const modelsLoadedEl = document.getElementById('models-status-value');
            
            if (transformersStatusEl) {
                const transformersAvailable = modelsData.transformers_available || false;
                transformersStatusEl.textContent = transformersAvailable ? '✅ Installed' : '❌ Not Installed';
                transformersStatusEl.style.color = transformersAvailable ? 'var(--success)' : 'var(--danger)';
            }
            
            if (hfStatusEl) {
                const hfMode = modelsData.hf_mode || 'off';
                const isConnected = hfMode !== 'off';
                const modeText = hfMode === 'public' ? 'Public' : hfMode === 'auth' ? 'Authenticated' : 'Offline';
                hfStatusEl.textContent = isConnected ? `✅ ${modeText}` : '⚠️ Offline';
                hfStatusEl.style.color = isConnected ? 'var(--success)' : 'var(--warning)';
            }
            
            if (modelsLoadedEl) {
                const modelsLoaded = modelsData.models_loaded || 0;
                const modelsFailed = modelsData.models_failed || 0;
                if (modelsLoaded > 0) {
                    modelsLoadedEl.textContent = `${modelsLoaded} Ready`;
                    modelsLoadedEl.style.color = 'var(--success)';
                } else if (modelsFailed > 0) {
                    modelsLoadedEl.textContent = `${modelsFailed} Failed`;
                    modelsLoadedEl.style.color = 'var(--danger)';
                } else {
                    modelsLoadedEl.textContent = '0';
                    modelsLoadedEl.style.color = 'var(--text-secondary)';
                }
            }
        }
        
        // Update the last test time
        const lastRun = localStorage.getItem('lastDiagnosticRun');
        const lastTestEl = document.getElementById('last-test-value');
        if (lastTestEl) {
            lastTestEl.textContent = lastRun ? new Date(lastRun).toLocaleString() : 'Never';
        }

        getToast().success('Status refreshed');
    } catch (error) {
        console.error('Error refreshing status:', error);
        getToast().error('Failed to refresh status');
    }
}

function downloadDiagnosticLog() {
    const output = document.getElementById('diagnostic-output').textContent;
    if (!output.trim()) {
        showToast('❌ No diagnostic output to download', 'warning');
        return;
    }

    const blob = new Blob([output], { type: 'text/plain' });
    const url = URL.createObjectURL(blob);
    const a = document.createElement('a');
    a.href = url;
    a.download = `diagnostic-log-${new Date().toISOString().slice(0, 19).replace(/:/g, '-')}.txt`;
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
    URL.revokeObjectURL(url);

    showToast('✅ Log downloaded', 'success');
}

// Note: Diagnostics initialization is handled in the enhanced section below

// ===== ENHANCED DIAGNOSTIC FUNCTIONS =====

let autoRefreshInterval = null;
let autoRefreshEnabled = false;

function toggleAutoRefresh() {
    autoRefreshEnabled = !autoRefreshEnabled;
    const btn = document.getElementById('auto-refresh-btn');
    
    if (autoRefreshEnabled) {
        btn.innerHTML = '<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="display: inline-block; vertical-align: middle; margin-right: 4px;"><polyline points="23 4 23 10 17 10"></polyline><polyline points="1 20 1 14 7 14"></polyline><path d="M3.51 9a9 9 0 0 1 14.85-3.36L23 10M1 14l4.64 4.36A9 9 0 0 0 20.49 15"></path></svg>Auto: ON (30s)';
        btn.style.background = 'rgba(16, 185, 129, 0.2)';
        btn.style.borderColor = 'var(--success)';
        autoRefreshInterval = setInterval(() => {
            refreshDiagnosticStatus();
            loadSystemHealth();
            loadProviderHealth();
        }, 30000);
        getToast().success('Auto-refresh enabled (30s interval)');
    } else {
        btn.innerHTML = '<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="display: inline-block; vertical-align: middle; margin-right: 4px;"><polyline points="23 4 23 10 17 10"></polyline><polyline points="1 20 1 14 7 14"></polyline><path d="M3.51 9a9 9 0 0 1 14.85-3.36L23 10M1 14l4.64 4.36A9 9 0 0 0 20.49 15"></path></svg>Auto: OFF';
        btn.style.background = '';
        btn.style.borderColor = '';
        if (autoRefreshInterval) {
            clearInterval(autoRefreshInterval);
            autoRefreshInterval = null;
        }
        getToast().info('Auto-refresh disabled');
    }
}

function switchDiagnosticTab(tabName) {
    // Hide all tabs
    document.querySelectorAll('.diagnostic-tab-content').forEach(tab => {
        tab.classList.remove('active');
    });
    document.querySelectorAll('.diagnostic-tab-btn').forEach(btn => {
        btn.classList.remove('active');
    });
    
    // Show selected tab
    document.getElementById(`diagnostic-tab-${tabName}`).classList.add('active');
    document.querySelector(`[data-tab="${tabName}"]`).classList.add('active');
    
    // Load content if needed
    if (tabName === 'health' && document.getElementById('health-details-content').innerHTML.includes('Click')) {
        loadSystemHealth();
    } else if (tabName === 'logs') {
        loadRecentLogs();
    }
}

async function loadSystemHealth() {
    try {
        const response = await fetch('/api/diagnostics/health');
        if (!response.ok) throw new Error('Failed to fetch health data');
        
        const data = await response.json();
        const container = document.getElementById('system-health-overview');
        
        if (!container) return;
        
        const providers = data.providers?.summary || {};
        const models = data.models?.summary || {};
        const overall = data.overall_health || {};
        
        container.innerHTML = `
            <div class="stat-card gradient-blue">
                <div class="stat-icon">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                        <path d="M22 11.08V12a10 10 0 1 1-5.93-9.14"></path>
                        <polyline points="22 4 12 14.01 9 11.01"></polyline>
                    </svg>
                </div>
                <div class="stat-content">
                    <div class="stat-label">Providers</div>
                    <div class="stat-value">${providers.healthy || 0}/${providers.total || 0}</div>
                    <div class="stat-trend" style="color: ${overall.providers_ok ? 'var(--success)' : 'var(--warning)'};">
                        ${overall.providers_ok ? '✅ Healthy' : '⚠️ Degraded'}
                    </div>
                </div>
            </div>
            <div class="stat-card gradient-purple">
                <div class="stat-icon">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                        <rect x="3" y="3" width="18" height="18" rx="2" ry="2"></rect>
                    </svg>
                </div>
                <div class="stat-content">
                    <div class="stat-label">AI Models</div>
                    <div class="stat-value">${models.healthy || 0}/${models.total || 0}</div>
                    <div class="stat-trend" style="color: ${overall.models_ok ? 'var(--success)' : 'var(--warning)'};">
                        ${overall.models_ok ? '✅ Healthy' : '⚠️ Degraded'}
                    </div>
                </div>
            </div>
            <div class="stat-card gradient-orange">
                <div class="stat-icon">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                        <circle cx="12" cy="12" r="10"></circle>
                        <path d="M12 6v6l4 2"></path>
                    </svg>
                </div>
                <div class="stat-content">
                    <div class="stat-label">In Cooldown</div>
                    <div class="stat-value">${(providers.in_cooldown || 0) + (models.in_cooldown || 0)}</div>
                    <div class="stat-trend">${(providers.in_cooldown || 0) + (models.in_cooldown || 0) > 0 ? '⚠️ Some services cooling' : '✅ All active'}</div>
                </div>
            </div>
            <div class="stat-card gradient-green">
                <div class="stat-icon">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                        <path d="M21 16V8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16z"></path>
                    </svg>
                </div>
                <div class="stat-content">
                    <div class="stat-label">Degraded</div>
                    <div class="stat-value">${(providers.degraded || 0) + (models.degraded || 0)}</div>
                    <div class="stat-trend">${(providers.degraded || 0) + (models.degraded || 0) > 0 ? '⚠️ Needs attention' : '✅ All optimal'}</div>
                </div>
            </div>
        `;
        
        // Update health details tab
        const healthDetails = document.getElementById('health-details-content');
        if (healthDetails) {
            healthDetails.innerHTML = `
                <div style="display: grid; gap: 16px;">
                    <div>
                        <h4 style="margin-bottom: 12px;">Provider Health Summary</h4>
                        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px;">
                            <div style="padding: 12px; background: rgba(0,0,0,0.2); border-radius: 8px;">
                                <div style="color: var(--text-secondary); font-size: 12px;">Total</div>
                                <div style="font-size: 24px; font-weight: 700;">${providers.total || 0}</div>
                            </div>
                            <div style="padding: 12px; background: rgba(16,185,129,0.1); border-radius: 8px; border: 1px solid rgba(16,185,129,0.3);">
                                <div style="color: var(--success); font-size: 12px;">Healthy</div>
                                <div style="font-size: 24px; font-weight: 700; color: var(--success);">${providers.healthy || 0}</div>
                            </div>
                            <div style="padding: 12px; background: rgba(245,158,11,0.1); border-radius: 8px; border: 1px solid rgba(245,158,11,0.3);">
                                <div style="color: var(--warning); font-size: 12px;">Degraded</div>
                                <div style="font-size: 24px; font-weight: 700; color: var(--warning);">${providers.degraded || 0}</div>
                            </div>
                            <div style="padding: 12px; background: rgba(239,68,68,0.1); border-radius: 8px; border: 1px solid rgba(239,68,68,0.3);">
                                <div style="color: var(--danger); font-size: 12px;">Unavailable</div>
                                <div style="font-size: 24px; font-weight: 700; color: var(--danger);">${providers.unavailable || 0}</div>
                            </div>
                        </div>
                    </div>
                    <div>
                        <h4 style="margin-bottom: 12px;">Model Health Summary</h4>
                        <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px;">
                            <div style="padding: 12px; background: rgba(0,0,0,0.2); border-radius: 8px;">
                                <div style="color: var(--text-secondary); font-size: 12px;">Total</div>
                                <div style="font-size: 24px; font-weight: 700;">${models.total || 0}</div>
                            </div>
                            <div style="padding: 12px; background: rgba(16,185,129,0.1); border-radius: 8px; border: 1px solid rgba(16,185,129,0.3);">
                                <div style="color: var(--success); font-size: 12px;">Healthy</div>
                                <div style="font-size: 24px; font-weight: 700; color: var(--success);">${models.healthy || 0}</div>
                            </div>
                            <div style="padding: 12px; background: rgba(245,158,11,0.1); border-radius: 8px; border: 1px solid rgba(245,158,11,0.3);">
                                <div style="color: var(--warning); font-size: 12px;">Degraded</div>
                                <div style="font-size: 24px; font-weight: 700; color: var(--warning);">${models.degraded || 0}</div>
                            </div>
                            <div style="padding: 12px; background: rgba(239,68,68,0.1); border-radius: 8px; border: 1px solid rgba(239,68,68,0.3);">
                                <div style="color: var(--danger); font-size: 12px;">Unavailable</div>
                                <div style="font-size: 24px; font-weight: 700; color: var(--danger);">${models.unavailable || 0}</div>
                            </div>
                        </div>
                    </div>
                </div>
            `;
        }
    } catch (error) {
        console.error('Error loading system health:', error);
        getToast().error('Failed to load system health');
    }
}
// Export to window immediately
window.loadSystemHealth = loadSystemHealth;

async function loadProviderHealth() {
    try {
        const response = await fetch('/api/diagnostics/health');
        if (!response.ok) throw new Error('Failed to fetch provider health');
        
        const data = await response.json();
        const tbody = document.getElementById('provider-health-table');
        if (!tbody) return;
        
        const providers = data.providers?.entries || [];
        const models = data.models?.entries || [];
        
        let html = '';
        
        // Add providers
        providers.slice(0, 10).forEach(entry => {
            const statusClass = entry.status === 'healthy' ? 'healthy' : 
                               entry.status === 'degraded' ? 'degraded' : 
                               entry.status === 'unavailable' ? 'unavailable' : 'unknown';
            const lastCheck = entry.last_success ? new Date(entry.last_success * 1000).toLocaleString() : 'Never';
            html += `
                <tr style="border-bottom: 1px solid var(--border);">
                    <td style="padding: 12px;">${entry.name || entry.id}</td>
                    <td style="padding: 12px;"><span style="color: var(--text-secondary);">Provider</span></td>
                    <td style="padding: 12px;"><span class="health-badge ${statusClass}">${entry.status || 'unknown'}</span></td>
                    <td style="padding: 12px; color: var(--text-secondary); font-size: 12px;">${lastCheck}</td>
                    <td style="padding: 12px;">
                        ${entry.in_cooldown ? '<span style="color: var(--warning); font-size: 12px;">⏳ Cooldown</span>' : '-'}
                    </td>
                </tr>
            `;
        });
        
        // Add models
        models.slice(0, 10).forEach(entry => {
            const statusClass = entry.status === 'healthy' ? 'healthy' : 
                               entry.status === 'degraded' ? 'degraded' : 
                               entry.status === 'unavailable' ? 'unavailable' : 'unknown';
            html += `
                <tr style="border-bottom: 1px solid var(--border);">
                    <td style="padding: 12px;">${entry.name || entry.key || 'Unknown'}</td>
                    <td style="padding: 12px;"><span style="color: var(--text-secondary);">AI Model</span></td>
                    <td style="padding: 12px;"><span class="health-badge ${statusClass}">${entry.status || 'unknown'}</span></td>
                    <td style="padding: 12px; color: var(--text-secondary); font-size: 12px;">-</td>
                    <td style="padding: 12px;">
                        ${entry.in_cooldown ? '<span style="color: var(--warning); font-size: 12px;">⏳ Cooldown</span>' : '-'}
                    </td>
                </tr>
            `;
        });
        
        if (html === '') {
            html = '<tr><td colspan="5" style="padding: 20px; text-align: center; color: var(--text-secondary);">No health data available</td></tr>';
        }
        
        tbody.innerHTML = html;
    } catch (error) {
        console.error('Error loading provider health:', error);
        getToast().error('Failed to load provider health');
    }
}
// Export to window immediately
window.loadProviderHealth = loadProviderHealth;

async function triggerSelfHeal() {
    try {
        getToast().info('Triggering self-healing...');
        const response = await fetch('/api/diagnostics/self-heal', { method: 'POST' });
        const data = await response.json();
        
        if (data.status === 'completed') {
            getToast().success(`Self-healing completed: ${data.summary.successful} successful, ${data.summary.failed} failed`);
            loadProviderHealth();
            loadSystemHealth();
        } else {
            getToast().error('Self-healing failed: ' + (data.error || 'Unknown error'));
        }
    } catch (error) {
        console.error('Error triggering self-heal:', error);
        getToast().error('Failed to trigger self-healing');
    }
}
// Export immediately after definition
window.triggerSelfHeal = triggerSelfHeal;

// Update the actual implementation (replacing placeholder)
async function testAPIEndpoints() {
    const resultsDiv = document.getElementById('api-test-results');
    if (!resultsDiv) return;
    
    resultsDiv.innerHTML = '<div class="spinner"></div> <span>Testing API endpoints...</span>';
    
    const endpoints = [
        { name: 'Health Check', url: '/api/health' },
        { name: 'System Status', url: '/api/status' },
        { name: 'Market Data', url: '/api/market' },
        { name: 'Models Status', url: '/api/models/status' },
        { name: 'Providers', url: '/api/providers' },
    ];
    
    let html = '<div style="display: grid; gap: 12px;">';
    let passed = 0;
    let failed = 0;
    
    for (const endpoint of endpoints) {
        try {
            const startTime = performance.now();
            const response = await fetch(endpoint.url);
            const duration = (performance.now() - startTime).toFixed(0);
            
            if (response.ok) {
                passed++;
                html += `
                    <div style="padding: 12px; background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); border-radius: 8px;">
                        <div style="display: flex; justify-content: space-between; align-items: center;">
                            <div>
                                <strong style="color: var(--success);">✅ ${endpoint.name}</strong>
                                <div style="color: var(--text-secondary); font-size: 12px; margin-top: 4px;">${endpoint.url}</div>
                            </div>
                            <div style="color: var(--text-secondary); font-size: 12px;">${duration}ms</div>
                        </div>
                    </div>
                `;
            } else {
                failed++;
                html += `
                    <div style="padding: 12px; background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); border-radius: 8px;">
                        <div style="display: flex; justify-content: space-between; align-items: center;">
                            <div>
                                <strong style="color: var(--danger);">❌ ${endpoint.name}</strong>
                                <div style="color: var(--text-secondary); font-size: 12px; margin-top: 4px;">${endpoint.url} - HTTP ${response.status}</div>
                            </div>
                        </div>
                    </div>
                `;
            }
        } catch (error) {
            failed++;
            html += `
                <div style="padding: 12px; background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); border-radius: 8px;">
                    <div>
                        <strong style="color: var(--danger);">❌ ${endpoint.name}</strong>
                        <div style="color: var(--text-secondary); font-size: 12px; margin-top: 4px;">${endpoint.url} - ${error.message}</div>
                    </div>
                </div>
            `;
        }
    }
    
    html += `</div><div style="margin-top: 16px; padding: 12px; background: rgba(0,0,0,0.2); border-radius: 8px;">
        <strong>Summary:</strong> ${passed} passed, ${failed} failed
    </div>`;
    
    resultsDiv.innerHTML = html;
    getToast().success(`API tests completed: ${passed} passed, ${failed} failed`);
}
// Export to window immediately
window.testAPIEndpoints = testAPIEndpoints;

async function checkDatabaseHealth() {
    try {
        getToast().info('Checking database health...');
        const response = await fetch('/api/diagnostics/run?auto_fix=false');
        const data = await response.json();
        
        const output = document.getElementById('diagnostic-output');
        if (output) {
            output.textContent = JSON.stringify(data, null, 2);
        }
        
        if (data.issues_found === 0) {
            getToast().success('Database health check passed');
        } else {
            getToast().warning(`Database health check found ${data.issues_found} issues`);
        }
    } catch (error) {
        console.error('Error checking database:', error);
        getToast().error('Failed to check database health');
    }
}
// Export to window immediately
window.checkDatabaseHealth = checkDatabaseHealth;

async function testNetworkConnectivity() {
    const output = document.getElementById('diagnostic-output');
    if (output) {
        output.textContent = 'Testing network connectivity...\n';
    }
    
    const endpoints = [
        { name: 'HuggingFace Hub', url: 'https://huggingface.co' },
        { name: 'CoinGecko API', url: 'https://api.coingecko.com/api/v3/ping' },
        { name: 'Alternative.me', url: 'https://api.alternative.me/fng/' },
    ];
    
    let results = 'Network Connectivity Test Results:\n' + '='.repeat(50) + '\n\n';
    
    for (const endpoint of endpoints) {
        try {
            const startTime = performance.now();
            const response = await fetch(endpoint.url, { method: 'HEAD', mode: 'no-cors' });
            const duration = (performance.now() - startTime).toFixed(0);
            results += `✅ ${endpoint.name}: Reachable (${duration}ms)\n`;
        } catch (error) {
            results += `❌ ${endpoint.name}: ${error.message}\n`;
        }
    }
    
    if (output) {
        output.textContent = results;
    }
    getToast().success('Network connectivity test completed');
}
// Export to window immediately
window.testNetworkConnectivity = testNetworkConnectivity;

async function loadRecentLogs() {
    try {
        const response = await fetch('/api/logs/recent');
        const data = await response.json();
        const container = document.getElementById('recent-logs-content');
        
        if (!container) return;
        
        if (data.logs && data.logs.length > 0) {
            let html = '<div style="display: grid; gap: 8px;">';
            data.logs.slice(0, 20).forEach(log => {
                const level = log.level || 'INFO';
                const levelColor = level === 'ERROR' ? 'var(--danger)' : 
                                  level === 'WARNING' ? 'var(--warning)' : 
                                  level === 'INFO' ? 'var(--info)' : 'var(--text-secondary)';
                html += `
                    <div style="padding: 10px; background: rgba(0,0,0,0.2); border-left: 3px solid ${levelColor}; border-radius: 4px; font-family: 'JetBrains Mono', monospace; font-size: 12px;">
                        <div style="display: flex; justify-content: space-between; margin-bottom: 4px;">
                            <span style="color: ${levelColor}; font-weight: 600;">[${level}]</span>
                            <span style="color: var(--text-secondary);">${log.timestamp || ''}</span>
                        </div>
                        <div style="color: var(--text-primary);">${log.message || JSON.stringify(log)}</div>
                    </div>
                `;
            });
            html += '</div>';
            container.innerHTML = html;
        } else {
            container.innerHTML = '<p class="text-secondary">No recent logs available</p>';
        }
    } catch (error) {
        console.error('Error loading logs:', error);
        document.getElementById('recent-logs-content').innerHTML = '<p style="color: var(--danger);">Failed to load logs</p>';
    }
}
// Export to window immediately
window.loadRecentLogs = loadRecentLogs;

// Export diagnostic functions to window
// Note: loadSystemHealth, loadProviderHealth, triggerSelfHeal, testAPIEndpoints,
// checkDatabaseHealth, testNetworkConnectivity, loadRecentLogs, and handleAIToolsIframeLoad
// are exported immediately after their definitions above (not here to avoid overwriting)

// Export diagnostic functions to window (actual implementations)
window.runDiagnostic = runDiagnostic;
window.refreshDiagnosticStatus = refreshDiagnosticStatus;
window.downloadDiagnosticLog = downloadDiagnosticLog;
window.toggleAutoRefresh = toggleAutoRefresh;
window.switchDiagnosticTab = switchDiagnosticTab;

// ===== AI TOOLS LOADER =====
function loadAITools() {
    const iframe = document.getElementById('ai-tools-iframe');
    const loading = document.getElementById('ai-tools-loading');
    
    if (!iframe) return;
    
    // Show loading, hide iframe
    if (loading) loading.style.display = 'block';
    iframe.style.display = 'none';
    
    // Reload iframe if it already has content, or just show it
    if (iframe.src && iframe.src.includes('/ai-tools')) {
        // Iframe already loaded, just show it
        setTimeout(() => {
            if (loading) loading.style.display = 'none';
            iframe.style.display = 'block';
        }, 100);
    } else {
        // Set src to load the page
        iframe.src = '/ai-tools';
    }
}

function handleAIToolsIframeLoad() {
    const iframe = document.getElementById('ai-tools-iframe');
    const loading = document.getElementById('ai-tools-loading');
    
    if (loading) loading.style.display = 'none';
    if (iframe) iframe.style.display = 'block';
    
    console.log('✅ AI Tools iframe loaded successfully');
}

window.loadAITools = loadAITools;
window.handleAIToolsIframeLoad = handleAIToolsIframeLoad;

// Initialize diagnostics on page load
document.addEventListener('DOMContentLoaded', function() {
    refreshDiagnosticStatus();
    loadSystemHealth();
    loadProviderHealth();
});

console.log('✅ App.js loaded successfully');