import { web3 } from "hardhat";
import History from "../interface/history";
import contracts from "../../config/contracts";
import logger from "../../utils/logger";
import {BigNumber} from "ethers";
import {replaceAll} from "hardhat/internal/util/strings";
import swapPath from "../interface/swapPath";
import history from "../interface/history";

const ierc20abi = require('../../abi/IERC20_ABI.json')

async function handlePosition(router: String, factory: String) {
  try {
    // 拉取当前pull状态信息
    const pullState = await History.findByHashOrBlockOrDataVague('UNIV2DEX', factory, '', 0, 200)
    let nowPosition = 0

    // 没有状态信息的情况
    if (pullState.data.length == 0) {
      const appendRst = await History.appendOrUpdate('UNIV2DEX', factory, {"now": nowPosition})
      logger.debug(appendRst)
    } else {
      nowPosition = pullState.data[0].dataObj.now
    }

    return nowPosition
  } catch (e) {
    logger.error(`Pull state error, router: ${router}, factory: ${factory}`)
    logger.error(e)
  }

  return 0
}

async function handleAFactory(routerObj: any, position: number, pairsLength: number, v2_410_tool: any, lpList: any) {
  while (position < pairsLength) {
    try {
      const info = await v2_410_tool.methods.getPairIdInfo(routerObj.factory, position).call()

      const symbol0 = info['2'].replace(/[^A-Za-z0-9]+/g, '').substring(0, 10)
      const symbol1 = info['6'].replace(/[^A-Za-z0-9]+/g, '').substring(0, 10)
      const name = `${routerObj.name}_${symbol0}_${symbol1}`
      const sum2 = replaceAll(BigNumber.from(info['1']).add(BigNumber.from(info['5']))._hex, '0x0', '0x')

      const Lp = {
        LP: info['0'],
        decimals0: info['3'],
        decimals1: info['7'],
        factory: routerObj.factory,
        feei: routerObj.fee,
        id: position,
        name: name,
        r0: info['4'],
        r1: info['8'],
        router: routerObj.router,
        sum2: sum2,
        symbol0: symbol0,
        symbol1: symbol1,
        token0: info['1'],
        token1: info['5'],
        isEthW: routerObj.type == 'ETHW'
      }
      lpList.push(Lp)

      // 更新一次position
      await History.appendOrUpdate('UNIV2DEX', routerObj.factory, {"now": position})
    } catch (e) {}

    position++
  }
}

async function getAllLp(v2Router: any, fromZero: boolean, v2_410_tool: any, v2_factory_abi: any, lpList: any) {
  try {
    const v2_factory_address = v2Router.factory
    // 获取工厂实例
    const v2_factory = new web3.eth.Contract(v2_factory_abi, v2_factory_address)
    // 获取当前pairsLength
    const pairsLength = await v2_factory.methods.allPairsLength().call()
    // 获取当前pull状态
    const position = fromZero ? 0 : await handlePosition(v2Router.router, v2_factory_address)

    if (position + 1 < pairsLength) {
      logger.debug(`Router address: ${v2Router.router}`)
      logger.debug(`factory: ${v2_factory_address}, ${position + 1} / ${pairsLength}.`)

      await handleAFactory(v2Router, position, pairsLength, v2_410_tool, lpList)
    }
  } catch (e) {
    logger.error(`New contract error, router: ${v2Router.router}`)
    logger.error(e)
  }
}

async function saveLpToSwapPath(lpList: any) {
  for (let lpIndex in lpList) {
    const lp = lpList[lpIndex]

    let lpSum2List = []

    lpSum2List.push(lp)

    const insertRst = await swapPath.appendOrUpdate(lp.sum2, '2', lpSum2List)
    logger.debug(`save path: ${lp.name}: ${insertRst.msg}, ${parseInt(lpIndex) + 1}/${lpList.length}`)
  }
}

async function handleToken(pool: any, zero: boolean) {
  const token = {
    'address': zero ? pool.token0 : pool.token1,
    'symbol': zero ? pool.symbol0 : pool.symbol1,
    'decimal': zero ? pool.decimals0 : pool.decimals1,
    'name': 'xxxxxxxx'
  }

  const tokenObj = new web3.eth.Contract(ierc20abi, token.address)

  token.name = await tokenObj.methods.name().call()
  token.name = token.name.replace(/[^A-Za-z0-9 ]+/g, '').substring(0, 37)

  return token
}

async function saveToken(lpList: any, type='token') {
  for (let lpIndex in lpList) {
    const lp = lpList[lpIndex]

    try {
      const token = await handleToken(lp, true)

      const saveRst = await history.appendOrUpdate(type, token.address, token)
      logger.debug(`${token.name} ${saveRst.msg}`)
    } catch (e) {}

    try {
      const token = await handleToken(lp, false)

      const saveRst = await history.appendOrUpdate(type, token.address, token)
      logger.debug(`${token.name} ${saveRst.msg}`)
    } catch (e) {}

    logger.debug(`insert token: ${parseInt(lpIndex) + 1} / ${lpList.length}`)
  }
}

async function saveLp(lpList: any, type='0') {
  for (let lpIndex in lpList) {
    const lp = lpList[lpIndex]
    const insertRst = await History.appendOrUpdate(type, lp.LP, lp)
    logger.debug(`insert lp:${insertRst.msg}, hash: ${lp.LP}, ${parseInt(lpIndex) + 1} / ${lpList.length}`)
  }
}

async function filterLp(lpList: any, filteredLpList: any) {
  for (let lpIndex in lpList) {
    const lp = lpList[lpIndex]

    if (lp.token0.toLowerCase() === '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2') {
      if (parseInt(lp.r0) > 20 * 1e18) filteredLpList.push(lp)
    } else if (lp.token1.toLowerCase() === '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2') {
      if (parseInt(lp.r1) > 20 * 1e18) filteredLpList.push(lp)
    } else {
      filteredLpList.push(lp)
    }
  }
}

async function main() {
  logger.debug('Pull v2 start.')

  const v2_factory_abi = require('../../abi/UNIV2_FACTORY_ABI.json')
  const v2_tool_abi = require('../../abi/410_V2_TOOLS.json')

  // 初始化410 v2工具箱
  const v2_410_tool = new web3.eth.Contract(v2_tool_abi, contracts.TOOLS_410_V2)
  const v2RouterInfo = require('../../config/router-list.json')

  let fromZero: boolean = true
  const lpList: any = []
  const filteredLpList: any = []

  while (true) {
    for (let router_index = 0; router_index < v2RouterInfo.length; router_index++) {
      lpList.length = 0
      filteredLpList.length = 0

      // 1. 获取Lp
      await getAllLp(v2RouterInfo[router_index], fromZero, v2_410_tool, v2_factory_abi, lpList)
      // 2. 保存Lp信息
      await saveLp(lpList, '0')
      // 3. 保存Lp的Token到Token表
      await saveToken(lpList, 'token')
      // 4. 过滤Lp
      await filterLp(lpList, filteredLpList)
      // 5. 将过滤后的Lp保存到二阶表
      await saveLpToSwapPath(filteredLpList)
      // 6. 保存筛选之后的的Token到TopToken表
      await saveToken(filteredLpList, 'topToken')
      // 7. 保存过滤后的Lp到TopLp
      await saveLp(filteredLpList, 'topLp')

      if (lpList.length > 0) {
        logger.debug('')
        logger.debug('')
        logger.debug('')
      }
    }

    // 数据流、abstruct
    // v2RouterInfo.forEach(async (routerInfo) => {
    //   const lpList = await getAllLp(routerInfo);
    //   lpList.forEach(async (lp) => {
    //     await saveLp(lp)
    //     const token = parseToken(lp)
    //     saveToken(token)
    //   })
    // })
    //

    if (fromZero) fromZero = false;
  }
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
})