// (c) 2019-2020, Lux Partners Limited.
//
// This file is a derived work, based on the go-ethereum library whose original
// notices appear below.
//
// It is distributed under a license compatible with the licensing terms of the
// original code from which it is derived.
//
// Much love to the original authors for their work.
// **********
// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package apitypes

import (
	"encoding/json"
	"fmt"
	"math/big"
	"strings"

	"github.com/luxfi/coreth/core/types"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/common/hexutil"
)

type ValidationInfo struct {
	Typ     string `json:"type"`
	Message string `json:"message"`
}
type ValidationMessages struct {
	Messages []ValidationInfo
}

const (
	WARN = "WARNING"
	CRIT = "CRITICAL"
	INFO = "Info"
)

func (vs *ValidationMessages) Crit(msg string) {
	vs.Messages = append(vs.Messages, ValidationInfo{CRIT, msg})
}
func (vs *ValidationMessages) Warn(msg string) {
	vs.Messages = append(vs.Messages, ValidationInfo{WARN, msg})
}
func (vs *ValidationMessages) Info(msg string) {
	vs.Messages = append(vs.Messages, ValidationInfo{INFO, msg})
}

// getWarnings returns an error with all messages of type WARN of above, or nil if no warnings were present
func (v *ValidationMessages) GetWarnings() error {
	var messages []string
	for _, msg := range v.Messages {
		if msg.Typ == WARN || msg.Typ == CRIT {
			messages = append(messages, msg.Message)
		}
	}
	if len(messages) > 0 {
		return fmt.Errorf("validation failed: %s", strings.Join(messages, ","))
	}
	return nil
}

// SendTxArgs represents the arguments to submit a transaction
// This struct is identical to ethapi.TransactionArgs, except for the usage of
// common.MixedcaseAddress in From and To
type SendTxArgs struct {
	From                 common.MixedcaseAddress  `json:"from"`
	To                   *common.MixedcaseAddress `json:"to"`
	Gas                  hexutil.Uint64           `json:"gas"`
	GasPrice             *hexutil.Big             `json:"gasPrice"`
	MaxFeePerGas         *hexutil.Big             `json:"maxFeePerGas"`
	MaxPriorityFeePerGas *hexutil.Big             `json:"maxPriorityFeePerGas"`
	Value                hexutil.Big              `json:"value"`
	Nonce                hexutil.Uint64           `json:"nonce"`

	// We accept "data" and "input" for backwards-compatibility reasons.
	// "input" is the newer name and should be preferred by clients.
	// Issue detail: https://github.com/ethereum/go-ethereum/issues/15628
	Data  *hexutil.Bytes `json:"data"`
	Input *hexutil.Bytes `json:"input,omitempty"`

	// For non-legacy transactions
	AccessList *types.AccessList `json:"accessList,omitempty"`
	ChainID    *hexutil.Big      `json:"chainId,omitempty"`
}

func (args SendTxArgs) String() string {
	s, err := json.Marshal(args)
	if err == nil {
		return string(s)
	}
	return err.Error()
}

// ToTransaction converts the arguments to a transaction.
func (args *SendTxArgs) ToTransaction() *types.Transaction {
	// Add the To-field, if specified
	var to *common.Address
	if args.To != nil {
		dstAddr := args.To.Address()
		to = &dstAddr
	}

	var input []byte
	if args.Input != nil {
		input = *args.Input
	} else if args.Data != nil {
		input = *args.Data
	}

	var data types.TxData
	switch {
	case args.MaxFeePerGas != nil:
		al := types.AccessList{}
		if args.AccessList != nil {
			al = *args.AccessList
		}
		data = &types.DynamicFeeTx{
			To:         to,
			ChainID:    (*big.Int)(args.ChainID),
			Nonce:      uint64(args.Nonce),
			Gas:        uint64(args.Gas),
			GasFeeCap:  (*big.Int)(args.MaxFeePerGas),
			GasTipCap:  (*big.Int)(args.MaxPriorityFeePerGas),
			Value:      (*big.Int)(&args.Value),
			Data:       input,
			AccessList: al,
		}
	case args.AccessList != nil:
		data = &types.AccessListTx{
			To:         to,
			ChainID:    (*big.Int)(args.ChainID),
			Nonce:      uint64(args.Nonce),
			Gas:        uint64(args.Gas),
			GasPrice:   (*big.Int)(args.GasPrice),
			Value:      (*big.Int)(&args.Value),
			Data:       input,
			AccessList: *args.AccessList,
		}
	default:
		data = &types.LegacyTx{
			To:       to,
			Nonce:    uint64(args.Nonce),
			Gas:      uint64(args.Gas),
			GasPrice: (*big.Int)(args.GasPrice),
			Value:    (*big.Int)(&args.Value),
			Data:     input,
		}
	}
	return types.NewTx(data)
}
