import {promisify} from '@0xproject/utils';
import {BigNumber} from 'bignumber.js';
import * as chai from 'chai';
import Web3 = require('web3');

import * as multiSigWalletJSON from '../../build/contracts/MultiSigWalletWithTimeLock.json';
import {Artifacts} from '../../util/artifacts';
import {constants} from '../../util/constants';
import {MultiSigWrapper} from '../../util/multi_sig_wrapper';
import {RPC} from '../../util/rpc';
import {ContractInstance} from '../../util/types';

import {chaiSetup} from './utils/chai_setup';

const {MultiSigWalletWithTimeLock} = new Artifacts(artifacts);

const MULTI_SIG_ABI = (multiSigWalletJSON as any).abi;
chaiSetup.configure();
const expect = chai.expect;

// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
// with type `any` to a variable of type `Web3`.
const web3: Web3 = (global as any).web3;

contract('MultiSigWalletWithTimeLock', (accounts: string[]) => {
    const owners = [accounts[0], accounts[1]];
    const SECONDS_TIME_LOCKED = 10000;

    let multiSig: ContractInstance;
    let multiSigWrapper: MultiSigWrapper;
    let txId: number;
    let initialSecondsTimeLocked: number;
    let rpc: RPC;

    before(async () => {
        multiSig = await MultiSigWalletWithTimeLock.deployed();
        multiSigWrapper = new MultiSigWrapper(multiSig);

        const secondsTimeLocked = await multiSig.secondsTimeLocked.call();
        initialSecondsTimeLocked = secondsTimeLocked.toNumber();
        rpc = new RPC();
    });

    describe('changeTimeLock', () => {
        it('should throw when not called by wallet', async () => {
            return expect(multiSig.changeTimeLock(SECONDS_TIME_LOCKED, {from: owners[0]}))
                .to.be.rejectedWith(constants.REVERT);
        });

        it('should throw without enough confirmations', async () => {
            const destination = multiSig.address;
            const from = owners[0];
            const dataParams = {
                name: 'changeTimeLock',
                abi: MULTI_SIG_ABI,
                args: [SECONDS_TIME_LOCKED],
            };
            const subRes = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);

            txId = subRes.logs[0].args.transactionId.toNumber();
            return expect(multiSig.executeTransaction(txId)).to.be.rejectedWith(constants.REVERT);
        });

        it('should set confirmation time with enough confirmations', async () => {
            const res = await multiSig.confirmTransaction(txId, {from: owners[1]});
            expect(res.logs).to.have.length(2);
            const blockNum = await promisify<number>(web3.eth.getBlockNumber)();
            const blockInfo = await promisify<Web3.BlockWithoutTransactionData>(web3.eth.getBlock)(blockNum);
            const timestamp = new BigNumber(blockInfo.timestamp);
            const confirmationTimeBigNum = new BigNumber(await multiSig.confirmationTimes.call(txId));

            expect(timestamp).to.be.bignumber.equal(confirmationTimeBigNum);
        });

        it('should be executable with enough confirmations and secondsTimeLocked of 0', async () => {
            expect(initialSecondsTimeLocked).to.be.equal(0);

            const res = await multiSig.executeTransaction(txId);
            expect(res.logs).to.have.length(2);

            const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.call());
            expect(secondsTimeLocked).to.be.bignumber.equal(SECONDS_TIME_LOCKED);
        });

        const newSecondsTimeLocked = 0;
        it('should throw if it has enough confirmations but is not past the time lock', async () => {
            const destination = multiSig.address;
            const from = owners[0];
            const dataParams = {
                name: 'changeTimeLock',
                abi: MULTI_SIG_ABI,
                args: [newSecondsTimeLocked],
            };
            const subRes = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);

            txId = subRes.logs[0].args.transactionId.toNumber();
            const confRes = await multiSig.confirmTransaction(txId, {from: owners[1]});
            expect(confRes.logs).to.have.length(2);

            return expect(multiSig.executeTransaction(txId)).to.be.rejectedWith(constants.REVERT);
        });

        it('should execute if it has enough confirmations and is past the time lock', async () => {
            await rpc.increaseTimeAsync(SECONDS_TIME_LOCKED);
            await multiSig.executeTransaction(txId);

            const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.call());
            expect(secondsTimeLocked).to.be.bignumber.equal(newSecondsTimeLocked);
        });
    });
});