import Web3 from 'web3';
import { validateAndParseAddress } from './utils'
import { DODO_SDK_DATA } from './data/constants';
import { Route } from './route';

import * as ERC20_ABI from './abi/erc20.json';

export class DODOExternal {
    public ZERO_ADDRESS: string = '0x0000000000000000000000000000000000000000'
    public ETH_ADDRESS: string = '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE'
    public WEB3_URL: string
    public WETH_TOKEN: { symbol: string; address: string; decimals: number, name: string, source: string } = DODO_SDK_DATA.WETH
    public DODO_PROXY: string = DODO_SDK_DATA.DODO_PROXY
    public DODO_APPROVE: string = DODO_SDK_DATA.DODO_APPROVE
    public DODO_SWAP_CALC_HELPER: string = DODO_SDK_DATA.DODO_SWAP_CALC_HELPER

    public constructor(
        _WEB3_URL?: string
    ) {
        this.WEB3_URL = _WEB3_URL || DODO_SDK_DATA.WEB3_URL
    }

    /**
     * @notice 查询路由，仅支持主网
     * @param fromToken
     * @param toToken
     * @param fromAmount  (需计算考虑Decimals)
     * @param slippage  (0-50)(可不填)
     * @param assetTo   (用户地址)(可不填)
     * @param deadline  (交易超时时间，默认20分钟)(可不填)
     */
    public async GetRoute(
        fromToken: { address: string; decimals: number; symbol: string; source: string; name: string; },
        toToken: { address: string; decimals: number; symbol: string; source: string; name: string; },
        fromAmount: string,
        slippage: number = 0,
        assetTo: string = "",
        deadline: number = Math.floor(new Date().getTime() / 1000 + 60 * 20)
    ) {
        //hacked
        DODO_V1_TOKENLIST.includes(validateAndParseAddress(fromToken.address)) ? fromToken.source = 'dodo' : fromToken.source = 'other'
        DODO_V1_TOKENLIST.includes(validateAndParseAddress(toToken.address)) ? toToken.source = 'dodo' : toToken.source = 'other'

        const route = new Route(1, this.WEB3_URL)

        const quote1 = route.GetAndMakeDODOAndUniRoute(fromToken, toToken, fromAmount, slippage, assetTo, deadline)
        const quote2 = route.GetOneInchRoute(fromToken, toToken, fromAmount)
        const quote3 = route.GetZeroXRoute(fromToken, toToken, fromAmount)
        const quote4 = route.GetDODORoute(fromToken, toToken, fromAmount)

        let res: any[] = await Promise.all([quote1, quote2, quote3, quote4]);

        res.sort(function (a, b) {
            return a.resAmount - b.resAmount;
        });

        return res[res.length - 1]
    }

    /**
     * @notice 构造路由请求至合约
     * @param fromToken  
     * @param toToken      
     * @param fromAmount   (需计算考虑Decimals)
     * @param slippage     (0-50)
     * @param assetTo      (用户地址)
     * @param source       (询价来源)
     * @param deadline     (交易超时时间，默认20分钟)(可不填)
     */
    public async MakeRoute(
        fromToken: { address: string; decimals: number; symbol: string; source: string; name?: string; },
        toToken: { address: string; decimals: number; symbol: string; name: string; source: string },
        fromAmount: string,
        slippage: number,
        assetTo: string,
        source: string,
        deadline: number = Math.floor(new Date().getTime() / 1000 + 60 * 20),
    ) {
        //hacked
        DODO_V1_TOKENLIST.includes(validateAndParseAddress(fromToken.address)) ? fromToken.source = 'dodo' : fromToken.source = 'other'
        DODO_V1_TOKENLIST.includes(validateAndParseAddress(toToken.address)) ? toToken.source = 'dodo' : toToken.source = 'other'

        const route = new Route(1, this.WEB3_URL)
        let res = await route.MakeRoute(fromToken, toToken, fromAmount, slippage, assetTo, deadline, source)
        return res
    }


    /**
     * @notice 判断Swap的token是否需要授权
     * @param fromToken   {"address"}     
     * @param addr       用户地址 
     */
    public async ApproveJudge(
        fromToken: { address: string; },
        addr: string,
        targetAddr: string,
        web3Provider: any = null
    ) {
        const web3 = new Web3(web3Provider || new Web3.providers.HttpProvider(this.WEB3_URL));
        if (fromToken.address == this.ETH_ADDRESS)
            return -1;
        const erc20Token = new web3.eth.Contract(ERC20_ABI['default'], fromToken.address);
        let allowanceAmount = await erc20Token.methods.allowance(addr, targetAddr).call();
        return allowanceAmount;
    }

    /**
     * @notice ERC20 Token 交易前授权
     * @param fromToken   {"symbol","name","decimals","address"}     
     * @param targetAddr 授权合约地址
     * @param approveAmount  hex 16进制字符串数值
     */
    public async ApproveHandle(
        fromToken: { address: string; },
        targetAddr: string,
        approveAmount: string,
        web3Provider: any = null
    ) {
        const web3 = new Web3(web3Provider || new Web3.providers.HttpProvider(this.WEB3_URL));
        const erc20Token = new web3.eth.Contract(ERC20_ABI['default'], fromToken.address);
        let data = await erc20Token.methods.approve(targetAddr, approveAmount).encodeABI();
        return data;
    }
}

export const DODO_V1_TOKENLIST = [
    "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE", /*ETH*/
    "0x43Dfc4159D86F3A37A5A4B3D4580b888ad7d4DDd", /*DODO*/
    "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", /*WETH*/
    "0xdAC17F958D2ee523a2206206994597C13D831ec7", /*USDT*/
    "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", /*USDC*/
    "0xa0afAA285Ce85974c3C881256cB7F225e3A1178a", /*wCRES*/
    "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599", /*WBTC*/
    "0x514910771AF9Ca656af840dff83E8264EcF986CA", /*LINK*/
    "0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F", /*SNX*/
    "0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9", /*AAVE*/
    "0xc00e94Cb662C3520282E6f5717214004A7f26888", /*COMP*/
    "0x0bc529c00C6401aEF6D220BE8C6Ea1667F6Ad93e", /*YFI*/
    "0x4691937a7508860F876c9c0a2a617E7d9E945D4B", /*WOO*/
    "0x054f76beED60AB6dBEb23502178C52d6C5dEbE40", /*FIN*/
]