const { expect } = require('chai')
const { ethers } = require('hardhat')
const { BigNumber } = require('@ethersproject/bignumber')
const { propose } = require('../../scripts/helper/propose_proposal.js')

const config = require('../../config')

const { getSignerFromAddress, takeSnapshot, revertSnapshot, advanceTime } = require('../utils')

function printBalanceWithDescription(descr, bn) {
  console.log(
    `\n ${descr} => ${
      bn.div(BigNumber.from(10).pow(18)).toString() +
      '.' +
      bn.div(BigNumber.from(10).pow(14)).toString().slice(-4)
    }`,
  )
}

describe('V3 governance tests', () => {
  const zero = BigNumber.from(0)

  const ProposalState = {
    Pending: 0,
    Active: 1,
    Defeated: 2,
    Timelocked: 3,
    AwaitingExecution: 4,
    Executed: 5,
    Expired: 6,
  }

  let periods = {
    EXECUTION_DELAY: zero,
    EXECUTION_EXPIRATION: zero,
    QUORUM_VOTES: zero,
    PROPOSAL_THRESHOLD: zero,
    VOTING_DELAY: zero,
    VOTING_PERIOD: zero,
    CLOSING_PERIOD: zero,
    VOTE_EXTEND_TIME: zero,
  }

  async function setPeriods(_periods, govc) {
    _periods.EXECUTION_DELAY = await govc.EXECUTION_DELAY()
    _periods.EXECUTION_EXPIRATION = await govc.EXECUTION_EXPIRATION()
    _periods.QUORUM_VOTES = await govc.QUORUM_VOTES()
    _periods.PROPOSAL_THRESHOLD = await govc.PROPOSAL_THRESHOLD()
    _periods.VOTING_DELAY = await govc.VOTING_DELAY()
    _periods.VOTING_PERIOD = await govc.VOTING_PERIOD()
    _periods.CLOSING_PERIOD = await govc.CLOSING_PERIOD()
    _periods.VOTE_EXTEND_TIME = await govc.VOTE_EXTEND_TIME()
    return _periods
  }

  let quorumVotes

  let GovernanceContract
  let TornToken

  let provider

  let tornwhale
  let proposer

  let propfacfac
  let propfac
  let torn
  let gov

  // From other tests

  let getToken = async (tokenAddress) => {
    return await ethers.getContractAt('@openzeppelin/contracts/token/ERC20/ERC20.sol:ERC20', tokenAddress)
  }

  let minewait = async (time) => {
    await ethers.provider.send('evm_increaseTime', [time])
    await ethers.provider.send('evm_mine', [])
  }

  let sendr = async (method, params) => {
    return await ethers.provider.send(method, params)
  }

  let clog = (...x) => {
    console.log(x)
  }

  let pE = (x) => {
    return ethers.utils.parseEther(`${x}`)
  }

  let snapshotId

  before(async function () {
    // Pick our signer
    proposer = (await ethers.getSigners())[2]

    // Ok get current gov
    gov = (await ethers.getContractAt('GovernanceStakingUpgrade', config.governance)).connect(proposer)

    // Impersonate
    await sendr('hardhat_impersonateAccount', [config.governance])

    // Pick whale
    tornwhale = ethers.provider.getSigner(config.governance)

    // Connect to above
    torn = (await getToken(config.TORN)).connect(tornwhale)

    // Set balance of governance contract
    await ethers.provider.send('hardhat_setBalance', [proposer.address, pE(10).toHexString()])

    // Take gov balance
    const govbal = await torn.balanceOf(gov.address)

    // Transfer
    await torn.transfer(proposer.address, govbal)

    // Check bal was allocated
    expect(await torn.balanceOf(proposer.address)).to.equal(govbal)

    // Connect
    torn = torn.connect(proposer)

    periods = await setPeriods(periods, gov)

    // Factory of the proposal
    propfacfac = await ethers.getContractFactory('ProposalContractFactory')
    propfac = await ethers.getContractFactory('PatchProposal')

    snapshotId = await takeSnapshot()
  })

  afterEach(async () => {
    await revertSnapshot(snapshotId)
    snapshotId = await takeSnapshot()
  })

  describe('Patch: Main integrative', () => {
    it('Should be able to pass all predicates concerning patch update', async () => {
      // Load these vars

      const oldVaultAddr = await gov.userVault()
      const oldGasCompAddr = await gov.gasCompensationVault()
      const oldStaking = await gov.Staking()

      const govBalBef = await torn.balanceOf(gov.address)
      const propBal = await torn.balanceOf(proposer.address)

      // Start proposing

      const proposal = await propfac.deploy((await propfacfac.deploy()).address)

      await torn.approve(gov.address, propBal)
      await gov.connect(proposer).lockWithApproval(propBal)

      await gov.propose(proposal.address, 'PATCH')

      const proposalId = await gov.latestProposalIds(proposer.address)

      let proposalData = await gov.proposals(proposalId)

      await minewait(periods.VOTING_DELAY.add(1).toNumber())

      await gov.castVote(proposalId, true)

      await ethers.provider.send('evm_setNextBlockTimestamp', [
        proposalData.endTime.add(periods.EXECUTION_DELAY).add(BigNumber.from(1000)).toNumber(),
      ])

      await ethers.provider.send('evm_mine', [])

      await gov.execute(proposalId)

      const newVaultAddr = await gov.userVault()
      const newGasCompAddr = await gov.gasCompensationVault()
      const newStaking = await gov.Staking()

      expect(oldGasCompAddr).to.equal(newGasCompAddr)
      expect(newVaultAddr).to.equal(oldVaultAddr)
      expect(newStaking)
        .to.not.equal(oldStaking)
        .and.to.not.equal('0x0000000000000000000000000000000000000000')
    })
  })
})