const {
  time,
  loadFixture,
} = require('@nomicfoundation/hardhat-toolbox/network-helpers');
const { expect } = require('chai');
const { ethers } = require('hardhat');

describe('DAO', () => {
  async function deploy() {
    const [account1, account2] = await ethers.getSigners();
    const DAO = await ethers.getContractFactory('DAO');
    const dao = await DAO.deploy();
    return { dao, account1, account2 };
  }

  it('Should deploy', async () => {
    const { dao } = await loadFixture(deploy);
    expect(dao).to.exist;
    expect(await dao.totalSupply()).to.equal(0);
  });

  describe('Post', () => {
    it('should be able to add a post', async () => {
      const { dao, account1 } = await loadFixture(deploy);
      const contentId = 'some-id';
      await expect(dao.addPost(account1, contentId)).to.emit(dao, 'PostAdded').withArgs(0);
      const post = await dao.posts(0);
      expect(post.author).to.equal(account1);
      expect(post.sender).to.equal(account1);
      expect(post.contentId).to.equal(contentId);
    });

    it('should be able to add a post on behalf of another account', async () => {
      const { dao, account1, account2 } = await loadFixture(deploy);
      const contentId = 'some-id';
      await dao.addPost(account2, contentId);
      const post = await dao.posts(0);
      expect(post.author).to.equal(account2);
      expect(post.sender).to.equal(account1);
      expect(post.contentId).to.equal(contentId);
    });
  });

  describe('Validation Pool', () => {
    let dao;
    let account1;
    const POOL_DURATION = 3600; // 1 hour
    const POOL_FEE = 100;
    const callbackData = ethers.AbiCoder.defaultAbiCoder().encode([], []);

    beforeEach(async () => {
      ({ dao, account1 } = await loadFixture(deploy));
      await dao.addPost(account1, 'content-id');
      const init = () => dao.initiateValidationPool(
        0,
        POOL_DURATION,
        false,
        callbackData,
        { value: POOL_FEE },
      );
      await expect(init()).to.emit(dao, 'ValidationPoolInitiated').withArgs(0);
      expect(await dao.validationPoolCount()).to.equal(1);
      expect(await dao.memberCount()).to.equal(0);
      expect(await dao.balanceOf(account1)).to.equal(0);
      expect(await dao.totalSupply()).to.equal(POOL_FEE);
    });

    describe('Initiate', () => {
      it('should not be able to initiate a validation pool without a fee', async () => {
        const setup = await loadFixture(deploy);
        const init = () => setup.dao.initiateValidationPool(0, POOL_DURATION, false, callbackData);
        await expect(init()).to.be.revertedWith('Fee is required to initiate validation pool');
      });

      it('should not be able to initiate a validation pool with duration below minimum', async () => {
        const setup = await loadFixture(deploy);
        const init = () => setup.dao.initiateValidationPool(
          0,
          59,
          false,
          callbackData,
          { value: POOL_FEE },
        );
        await expect(init()).to.be.revertedWith('Duration is too short');
      });

      it('should not be able to initiate a validation pool with duration above maximum', async () => {
        const setup = await loadFixture(deploy);
        const init = () => setup.dao.initiateValidationPool(
          0,
          86401,
          false,
          callbackData,
          { value: POOL_FEE },
        );
        await expect(init()).to.be.revertedWith('Duration is too long');
      });

      it('should be able to initiate a second validation pool', async () => {
        const init = () => dao.initiateValidationPool(
          0,
          POOL_DURATION,
          false,
          callbackData,
          { value: POOL_FEE },
        );
        await expect(init()).to.emit(dao, 'ValidationPoolInitiated').withArgs(1);
        expect(await dao.validationPoolCount()).to.equal(2);
      });

      it('Should be able to fetch pool instance', async () => {
        const pool = await dao.validationPools(0);
        expect(pool).to.exist;
        expect(pool.duration).to.equal(POOL_DURATION);
        expect(pool.postIndex).to.equal(0);
        expect(pool.resolved).to.be.false;
        expect(pool.sender).to.equal(account1);
      });
    });

    describe('Evaluate outcome', () => {
      it('should not be able to evaluate outcome before duration has elapsed', async () => {
        await expect(dao.evaluateOutcome(0)).to.be.revertedWith('Pool end time has not yet arrived');
      });

      it('should be able to evaluate outcome after duration has elapsed', async () => {
        time.increase(POOL_DURATION + 1);
        await expect(dao.evaluateOutcome(0)).to.emit(dao, 'ValidationPoolResolved').withArgs(0, true);
        expect(await dao.memberCount()).to.equal(1);
        expect(await dao.balanceOf(account1)).to.equal(100);
        const pool = await dao.validationPools(0);
        expect(pool.resolved).to.be.true;
        expect(pool.outcome).to.be.true;
      });

      it('should not be able to evaluate outcome more than once', async () => {
        time.increase(POOL_DURATION + 1);
        await expect(dao.evaluateOutcome(0)).to.emit(dao, 'ValidationPoolResolved').withArgs(0, true);
        await expect(dao.evaluateOutcome(0)).to.be.revertedWith('Pool is already resolved');
      });

      it('should be able to evaluate outcome of second validation pool', async () => {
        const init = () => dao.initiateValidationPool(
          0,
          POOL_DURATION,
          false,
          callbackData,
          { value: POOL_FEE },
        );
        await expect(init()).to.emit(dao, 'ValidationPoolInitiated').withArgs(1);
        expect(await dao.validationPoolCount()).to.equal(2);
        time.increase(POOL_DURATION + 1);
        await expect(dao.evaluateOutcome(0)).to.emit(dao, 'ValidationPoolResolved').withArgs(0, true);
        expect(await dao.balanceOf(account1)).to.equal(100);
        await expect(dao.evaluateOutcome(1)).to.emit(dao, 'ValidationPoolResolved').withArgs(1, true);
        expect(await dao.balanceOf(account1)).to.equal(200);
      });
    });

    describe('Stake', async () => {
      beforeEach(async () => {
        time.increase(POOL_DURATION + 1);
        await dao.evaluateOutcome(0);
        expect(await dao.balanceOf(account1)).to.equal(100);
        expect(await dao.balanceOf(dao.target)).to.equal(0);
        await dao.initiateValidationPool(
          0,
          POOL_DURATION,
          false,
          callbackData,
          { value: POOL_FEE },
        );
        expect(await dao.balanceOf(dao.target)).to.equal(100);
      });

      it('should be able to stake before validation pool has elapsed', async () => {
        await dao.stake(1, 10, true);
        expect(await dao.balanceOf(account1)).to.equal(90);
        expect(await dao.balanceOf(dao.target)).to.equal(110);
        time.increase(POOL_DURATION + 1);
        await expect(dao.evaluateOutcome(1)).to.emit(dao, 'ValidationPoolResolved').withArgs(1, true);
        expect(await dao.balanceOf(dao.target)).to.equal(0);
        expect(await dao.balanceOf(account1)).to.equal(200);
      });

      it('should not be able to stake after validation pool has elapsed', async () => {
        time.increase(POOL_DURATION + 1);
        await expect(dao.stake(1, 10, true)).to.be.revertedWith('Pool end time has passed');
      });

      it('should be able to stake against a validation pool', async () => {
        await dao.stake(1, 10, false);
        expect(await dao.balanceOf(account1)).to.equal(90);
        expect(await dao.balanceOf(dao.target)).to.equal(110);
        time.increase(POOL_DURATION + 1);
        await expect(dao.evaluateOutcome(1)).to.emit(dao, 'ValidationPoolResolved').withArgs(1, false);
        expect(await dao.balanceOf(dao.target)).to.equal(0);
        expect(await dao.balanceOf(account1)).to.equal(200);
        const pool = await dao.validationPools(1);
        expect(pool.outcome).to.be.false;
      });
    });
  });
});