// FIX: Removed self-import of 'Modality' that was conflicting with its own declaration.

export type Modality = 'image' | 'text' | 'mesh';

export type ProcessingState = 'unprocessed' | 'processing' | 'processed' | 'error';

export interface DataItem {
  id: string; 
  name: string;
  // Content can be null for shared datasets that need to be lazy-loaded.
  content: string | ArrayBuffer | null; 
  // URL to fetch the content if it's not available locally.
  contentUrl?: string; 
}

// Represents the full dataset object, including all heavy data.
// This will be stored in IndexedDB and loaded only when needed.
export interface Dataset {
  id: string; // UUID
  name: string;
  uploadDate: Date;
  data: {
    images: DataItem[];
    texts: DataItem[];
    meshes: DataItem[];
  };
  processingState: ProcessingState;
  processingProgress?: number;
  fullComparison?: FullComparisonResult;
  isShared?: boolean; // Flag to indicate if the dataset is hosted on the server.
}

// Represents a lightweight version of the Dataset for quick loading and display.
// This is what will be held in the main application state.
export interface DatasetMetadata {
    id: string;
    name: string;
    uploadDate: Date;
    processingState: ProcessingState;
    itemCounts: {
        images: number;
        texts: number;
        meshes: number;
    }
    isShared?: boolean; // Flag to indicate if the dataset is hosted on the server.
}


export interface MatchResult {
  item: DataItem;
  confidence: number;
}

export interface SingleComparisonResult {
  sourceItem: DataItem;
  sourceModality: Modality;
  results: {
    images?: MatchResult[];
    texts?: MatchResult[];
    meshes?: MatchResult[];
  };
}

export interface FullComparisonSourceItem {
  source: string; // filename
  matches: {
    [key in Modality]?: { item: string; confidence: number }[];
  };
}

export interface FullComparisonResult {
  images: FullComparisonSourceItem[];
  texts: FullComparisonSourceItem[];
  meshes: FullComparisonSourceItem[];
}