import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { RevertReason } from '@0xproject/types';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import { LogWithDecodedArgs } from 'ethereum-types';
import * as _ from 'lodash';

import { DummyERC20TokenContract } from '../../generated-wrappers/dummy_erc20_token';
import {
    MultiSigWalletWithTimeLockConfirmationEventArgs,
    MultiSigWalletWithTimeLockConfirmationTimeSetEventArgs,
    MultiSigWalletWithTimeLockContract,
    MultiSigWalletWithTimeLockExecutionEventArgs,
    MultiSigWalletWithTimeLockExecutionFailureEventArgs,
    MultiSigWalletWithTimeLockSubmissionEventArgs,
} from '../../generated-wrappers/multi_sig_wallet_with_time_lock';
import { artifacts } from '../../src/artifacts';
import { expectTransactionFailedAsync, expectTransactionFailedWithoutReasonAsync } from '../utils/assertions';
import { increaseTimeAndMineBlockAsync } from '../utils/block_timestamp';
import { chaiSetup } from '../utils/chai_setup';
import { constants } from '../utils/constants';
import { MultiSigWrapper } from '../utils/multi_sig_wrapper';
import { provider, txDefaults, web3Wrapper } from '../utils/web3_wrapper';

chaiSetup.configure();
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
// tslint:disable:no-unnecessary-type-assertion
describe('MultiSigWalletWithTimeLock', () => {
    let owners: string[];
    let notOwner: string;
    const REQUIRED_APPROVALS = new BigNumber(2);
    const SECONDS_TIME_LOCKED = new BigNumber(1000000);

    before(async () => {
        await blockchainLifecycle.startAsync();
    });
    after(async () => {
        await blockchainLifecycle.revertAsync();
    });
    before(async () => {
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
        owners = [accounts[0], accounts[1], accounts[2]];
        notOwner = accounts[3];
    });

    let multiSig: MultiSigWalletWithTimeLockContract;
    let multiSigWrapper: MultiSigWrapper;

    beforeEach(async () => {
        await blockchainLifecycle.startAsync();
    });
    afterEach(async () => {
        await blockchainLifecycle.revertAsync();
    });

    describe('external_call', () => {
        it('should be internal', async () => {
            const secondsTimeLocked = new BigNumber(0);
            multiSig = await MultiSigWalletWithTimeLockContract.deployFrom0xArtifactAsync(
                artifacts.MultiSigWalletWithTimeLock,
                provider,
                txDefaults,
                owners,
                REQUIRED_APPROVALS,
                secondsTimeLocked,
            );
            expect(_.isUndefined((multiSig as any).external_call)).to.be.equal(true);
        });
    });
    describe('confirmTransaction', () => {
        let txId: BigNumber;
        beforeEach(async () => {
            const secondsTimeLocked = new BigNumber(0);
            multiSig = await MultiSigWalletWithTimeLockContract.deployFrom0xArtifactAsync(
                artifacts.MultiSigWalletWithTimeLock,
                provider,
                txDefaults,
                owners,
                REQUIRED_APPROVALS,
                secondsTimeLocked,
            );
            multiSigWrapper = new MultiSigWrapper(multiSig, provider);
            const destination = notOwner;
            const data = constants.NULL_BYTES;
            const txReceipt = await multiSigWrapper.submitTransactionAsync(destination, data, owners[0]);
            txId = (txReceipt.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockSubmissionEventArgs>).args
                .transactionId;
        });
        it('should revert if called by a non-owner', async () => {
            await expectTransactionFailedWithoutReasonAsync(multiSigWrapper.confirmTransactionAsync(txId, notOwner));
        });
        it('should revert if transaction does not exist', async () => {
            const nonexistentTxId = new BigNumber(123456789);
            await expectTransactionFailedWithoutReasonAsync(
                multiSigWrapper.confirmTransactionAsync(nonexistentTxId, owners[1]),
            );
        });
        it('should revert if transaction is already confirmed by caller', async () => {
            await expectTransactionFailedWithoutReasonAsync(multiSigWrapper.confirmTransactionAsync(txId, owners[0]));
        });
        it('should confirm transaction for caller and log a Confirmation event', async () => {
            const txReceipt = await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            const log = txReceipt.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockConfirmationEventArgs>;
            expect(log.event).to.be.equal('Confirmation');
            expect(log.args.sender).to.be.equal(owners[1]);
            expect(log.args.transactionId).to.be.bignumber.equal(txId);
        });
        it('should revert if fully confirmed', async () => {
            await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            await expectTransactionFailedAsync(
                multiSigWrapper.confirmTransactionAsync(txId, owners[2]),
                RevertReason.TxFullyConfirmed,
            );
        });
        it('should set the confirmation time of the transaction if it becomes fully confirmed', async () => {
            const txReceipt = await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            const blockNum = await web3Wrapper.getBlockNumberAsync();
            const timestamp = new BigNumber(await web3Wrapper.getBlockTimestampAsync(blockNum));
            const log = txReceipt.logs[1] as LogWithDecodedArgs<MultiSigWalletWithTimeLockConfirmationTimeSetEventArgs>;
            expect(log.args.confirmationTime).to.be.bignumber.equal(timestamp);
            expect(log.args.transactionId).to.be.bignumber.equal(txId);
        });
    });
    describe('executeTransaction', () => {
        let txId: BigNumber;
        const secondsTimeLocked = new BigNumber(1000000);
        beforeEach(async () => {
            multiSig = await MultiSigWalletWithTimeLockContract.deployFrom0xArtifactAsync(
                artifacts.MultiSigWalletWithTimeLock,
                provider,
                txDefaults,
                owners,
                REQUIRED_APPROVALS,
                secondsTimeLocked,
            );
            multiSigWrapper = new MultiSigWrapper(multiSig, provider);
            const destination = notOwner;
            const data = constants.NULL_BYTES;
            const txReceipt = await multiSigWrapper.submitTransactionAsync(destination, data, owners[0]);
            txId = (txReceipt.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockSubmissionEventArgs>).args
                .transactionId;
        });
        it('should revert if transaction has not been fully confirmed', async () => {
            await increaseTimeAndMineBlockAsync(secondsTimeLocked.toNumber());
            await expectTransactionFailedAsync(
                multiSigWrapper.executeTransactionAsync(txId, owners[1]),
                RevertReason.TxNotFullyConfirmed,
            );
        });
        it('should revert if time lock has not passed', async () => {
            await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            await expectTransactionFailedAsync(
                multiSigWrapper.executeTransactionAsync(txId, owners[1]),
                RevertReason.TimeLockIncomplete,
            );
        });
        it('should execute a transaction and log an Execution event if successful and called by owner', async () => {
            await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            await increaseTimeAndMineBlockAsync(secondsTimeLocked.toNumber());
            const txReceipt = await multiSigWrapper.executeTransactionAsync(txId, owners[1]);
            const log = txReceipt.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockExecutionEventArgs>;
            expect(log.event).to.be.equal('Execution');
            expect(log.args.transactionId).to.be.bignumber.equal(txId);
        });
        it('should execute a transaction and log an Execution event if successful and called by non-owner', async () => {
            await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            await increaseTimeAndMineBlockAsync(secondsTimeLocked.toNumber());
            const txReceipt = await multiSigWrapper.executeTransactionAsync(txId, notOwner);
            const log = txReceipt.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockExecutionEventArgs>;
            expect(log.event).to.be.equal('Execution');
            expect(log.args.transactionId).to.be.bignumber.equal(txId);
        });
        it('should revert if a required confirmation is revoked before executeTransaction is called', async () => {
            await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            await increaseTimeAndMineBlockAsync(secondsTimeLocked.toNumber());
            await multiSigWrapper.revokeConfirmationAsync(txId, owners[0]);
            await expectTransactionFailedAsync(
                multiSigWrapper.executeTransactionAsync(txId, owners[1]),
                RevertReason.TxNotFullyConfirmed,
            );
        });
        it('should revert if transaction has been executed', async () => {
            await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            await increaseTimeAndMineBlockAsync(secondsTimeLocked.toNumber());
            const txReceipt = await multiSigWrapper.executeTransactionAsync(txId, owners[1]);
            const log = txReceipt.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockExecutionEventArgs>;
            expect(log.args.transactionId).to.be.bignumber.equal(txId);
            await expectTransactionFailedWithoutReasonAsync(multiSigWrapper.executeTransactionAsync(txId, owners[1]));
        });
        it("should log an ExecutionFailure event and not update the transaction's execution state if unsuccessful", async () => {
            const contractWithoutFallback = await DummyERC20TokenContract.deployFrom0xArtifactAsync(
                artifacts.DummyERC20Token,
                provider,
                txDefaults,
                constants.DUMMY_TOKEN_NAME,
                constants.DUMMY_TOKEN_SYMBOL,
                constants.DUMMY_TOKEN_DECIMALS,
                constants.DUMMY_TOKEN_TOTAL_SUPPLY,
            );
            const data = constants.NULL_BYTES;
            const value = new BigNumber(10);
            const submissionTxReceipt = await multiSigWrapper.submitTransactionAsync(
                contractWithoutFallback.address,
                data,
                owners[0],
                { value },
            );
            const newTxId = (submissionTxReceipt.logs[0] as LogWithDecodedArgs<
                MultiSigWalletWithTimeLockSubmissionEventArgs
            >).args.transactionId;
            await multiSigWrapper.confirmTransactionAsync(newTxId, owners[1]);
            await increaseTimeAndMineBlockAsync(secondsTimeLocked.toNumber());
            const txReceipt = await multiSigWrapper.executeTransactionAsync(newTxId, owners[1]);
            const executionFailureLog = txReceipt.logs[0] as LogWithDecodedArgs<
                MultiSigWalletWithTimeLockExecutionFailureEventArgs
            >;
            expect(executionFailureLog.event).to.be.equal('ExecutionFailure');
            expect(executionFailureLog.args.transactionId).to.be.bignumber.equal(newTxId);
        });
    });
    describe('changeTimeLock', () => {
        describe('initially non-time-locked', async () => {
            before(async () => {
                await blockchainLifecycle.startAsync();
            });
            after(async () => {
                await blockchainLifecycle.revertAsync();
            });
            before('deploy a wallet', async () => {
                const secondsTimeLocked = new BigNumber(0);
                multiSig = await MultiSigWalletWithTimeLockContract.deployFrom0xArtifactAsync(
                    artifacts.MultiSigWalletWithTimeLock,
                    provider,
                    txDefaults,
                    owners,
                    REQUIRED_APPROVALS,
                    secondsTimeLocked,
                );
                multiSigWrapper = new MultiSigWrapper(multiSig, provider);
            });

            it('should throw when not called by wallet', async () => {
                return expectTransactionFailedWithoutReasonAsync(
                    multiSig.changeTimeLock.sendTransactionAsync(SECONDS_TIME_LOCKED, { from: owners[0] }),
                );
            });

            it('should throw without enough confirmations', async () => {
                const destination = multiSig.address;
                const changeTimeLockData = multiSig.changeTimeLock.getABIEncodedTransactionData(SECONDS_TIME_LOCKED);
                const res = await multiSigWrapper.submitTransactionAsync(destination, changeTimeLockData, owners[0]);
                const log = res.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockSubmissionEventArgs>;
                const txId = log.args.transactionId;
                return expectTransactionFailedAsync(
                    multiSig.executeTransaction.sendTransactionAsync(txId, { from: owners[0] }),
                    RevertReason.TxNotFullyConfirmed,
                );
            });

            it('should set confirmation time with enough confirmations', async () => {
                const destination = multiSig.address;
                const changeTimeLockData = multiSig.changeTimeLock.getABIEncodedTransactionData(SECONDS_TIME_LOCKED);
                const subRes = await multiSigWrapper.submitTransactionAsync(destination, changeTimeLockData, owners[0]);
                const subLog = subRes.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockSubmissionEventArgs>;
                const txId = subLog.args.transactionId;

                const confirmRes = await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
                expect(confirmRes.logs).to.have.length(2);

                const blockNum = await web3Wrapper.getBlockNumberAsync();
                const blockInfo = await web3Wrapper.getBlockIfExistsAsync(blockNum);
                if (_.isUndefined(blockInfo)) {
                    throw new Error(`Unexpectedly failed to fetch block at #${blockNum}`);
                }
                const timestamp = new BigNumber(blockInfo.timestamp);
                const confirmationTimeBigNum = new BigNumber(await multiSig.confirmationTimes.callAsync(txId));

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

            it('should be executable with enough confirmations and secondsTimeLocked of 0', async () => {
                const destination = multiSig.address;
                const changeTimeLockData = multiSig.changeTimeLock.getABIEncodedTransactionData(SECONDS_TIME_LOCKED);
                const subRes = await multiSigWrapper.submitTransactionAsync(destination, changeTimeLockData, owners[0]);
                const subLog = subRes.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockSubmissionEventArgs>;
                const txId = subLog.args.transactionId;

                await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
                await multiSigWrapper.executeTransactionAsync(txId, owners[1]);

                const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.callAsync());
                expect(secondsTimeLocked).to.be.bignumber.equal(SECONDS_TIME_LOCKED);
            });
        });
        describe('initially time-locked', async () => {
            before(async () => {
                await blockchainLifecycle.startAsync();
            });
            after(async () => {
                await blockchainLifecycle.revertAsync();
            });
            let txId: BigNumber;
            const newSecondsTimeLocked = new BigNumber(0);
            before('deploy a wallet, submit transaction to change timelock, and confirm the transaction', async () => {
                multiSig = await MultiSigWalletWithTimeLockContract.deployFrom0xArtifactAsync(
                    artifacts.MultiSigWalletWithTimeLock,
                    provider,
                    txDefaults,
                    owners,
                    REQUIRED_APPROVALS,
                    SECONDS_TIME_LOCKED,
                );
                multiSigWrapper = new MultiSigWrapper(multiSig, provider);

                const changeTimeLockData = multiSig.changeTimeLock.getABIEncodedTransactionData(newSecondsTimeLocked);
                const res = await multiSigWrapper.submitTransactionAsync(
                    multiSig.address,
                    changeTimeLockData,
                    owners[0],
                );
                const log = res.logs[0] as LogWithDecodedArgs<MultiSigWalletWithTimeLockSubmissionEventArgs>;
                txId = log.args.transactionId;
                await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
            });

            it('should throw if it has enough confirmations but is not past the time lock', async () => {
                return expectTransactionFailedAsync(
                    multiSig.executeTransaction.sendTransactionAsync(txId, { from: owners[0] }),
                    RevertReason.TimeLockIncomplete,
                );
            });

            it('should execute if it has enough confirmations and is past the time lock', async () => {
                await increaseTimeAndMineBlockAsync(SECONDS_TIME_LOCKED.toNumber());
                await web3Wrapper.awaitTransactionSuccessAsync(
                    await multiSig.executeTransaction.sendTransactionAsync(txId, { from: owners[0] }),
                    constants.AWAIT_TRANSACTION_MINED_MS,
                );

                const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.callAsync());
                expect(secondsTimeLocked).to.be.bignumber.equal(newSecondsTimeLocked);
            });
        });
    });
});
// tslint:enable:no-unnecessary-type-assertion