import * as chai from 'chai';

import { AssetProxyId, ERC721AssetData } from '@0x/types';
import { BigNumber } from '@0x/utils';

import { assetDataUtils } from '../src/asset_data_utils';

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

chaiSetup.configure();
const expect = chai.expect;

const KNOWN_ERC20_ENCODING = {
    address: '0x1dc4c1cefef38a777b15aa20260a54e584b16c48',
    assetData: '0xf47261b00000000000000000000000001dc4c1cefef38a777b15aa20260a54e584b16c48',
};
const KNOWN_ERC721_ENCODING = {
    address: '0x1dc4c1cefef38a777b15aa20260a54e584b16c48',
    tokenId: new BigNumber(1),
    assetData:
        '0x025717920000000000000000000000001dc4c1cefef38a777b15aa20260a54e584b16c480000000000000000000000000000000000000000000000000000000000000001',
};
const KNOWN_MULTI_ASSET_ENCODING = {
    amounts: [new BigNumber(1), new BigNumber(1)],
    nestedAssetData: [KNOWN_ERC20_ENCODING.assetData, KNOWN_ERC721_ENCODING.assetData],
    assetData:
        '0x94cfcdd7000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000024f47261b00000000000000000000000001dc4c1cefef38a777b15aa20260a54e584b16c48000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044025717920000000000000000000000001dc4c1cefef38a777b15aa20260a54e584b16c48000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000',
};

describe('assetDataUtils', () => {
    it('should encode ERC20', () => {
        const assetData = assetDataUtils.encodeERC20AssetData(KNOWN_ERC20_ENCODING.address);
        expect(assetData).to.equal(KNOWN_ERC20_ENCODING.assetData);
    });
    it('should decode ERC20', () => {
        const decodedAssetData = assetDataUtils.decodeERC20AssetData(KNOWN_ERC20_ENCODING.assetData);
        expect(decodedAssetData.tokenAddress).to.equal(KNOWN_ERC20_ENCODING.address);
        expect(decodedAssetData.assetProxyId).to.equal(AssetProxyId.ERC20);
    });
    it('should encode ERC721', () => {
        const assetData = assetDataUtils.encodeERC721AssetData(
            KNOWN_ERC721_ENCODING.address,
            KNOWN_ERC721_ENCODING.tokenId,
        );
        expect(assetData).to.equal(KNOWN_ERC721_ENCODING.assetData);
    });
    it('should decode ERC721', () => {
        const decodedAssetData = assetDataUtils.decodeERC721AssetData(KNOWN_ERC721_ENCODING.assetData);
        expect(decodedAssetData.tokenAddress).to.equal(KNOWN_ERC721_ENCODING.address);
        expect(decodedAssetData.assetProxyId).to.equal(AssetProxyId.ERC721);
        expect(decodedAssetData.tokenId).to.be.bignumber.equal(KNOWN_ERC721_ENCODING.tokenId);
    });
    it('should encode ERC20 and ERC721 multiAssetData', () => {
        const assetData = assetDataUtils.encodeMultiAssetData(
            KNOWN_MULTI_ASSET_ENCODING.amounts,
            KNOWN_MULTI_ASSET_ENCODING.nestedAssetData,
        );
        expect(assetData).to.equal(KNOWN_MULTI_ASSET_ENCODING.assetData);
    });
    it('should decode ERC20 and ERC721 multiAssetData', () => {
        const decodedAssetData = assetDataUtils.decodeMultiAssetData(KNOWN_MULTI_ASSET_ENCODING.assetData);
        expect(decodedAssetData.assetProxyId).to.equal(AssetProxyId.MultiAsset);
        expect(decodedAssetData.amounts).to.deep.equal(KNOWN_MULTI_ASSET_ENCODING.amounts);
        expect(decodedAssetData.nestedAssetData).to.deep.equal(KNOWN_MULTI_ASSET_ENCODING.nestedAssetData);
    });
    it('should recursively decode ERC20 and ERC721 multiAssetData', () => {
        const decodedAssetData = assetDataUtils.decodeMultiAssetDataRecursively(KNOWN_MULTI_ASSET_ENCODING.assetData);
        expect(decodedAssetData.assetProxyId).to.equal(AssetProxyId.MultiAsset);
        expect(decodedAssetData.amounts).to.deep.equal(KNOWN_MULTI_ASSET_ENCODING.amounts);
        const decodedErc20AssetData = decodedAssetData.nestedAssetData[0];
        // tslint:disable-next-line:no-unnecessary-type-assertion
        const decodedErc721AssetData = decodedAssetData.nestedAssetData[1] as ERC721AssetData;
        expect(decodedErc20AssetData.tokenAddress).to.equal(KNOWN_ERC20_ENCODING.address);
        expect(decodedErc20AssetData.assetProxyId).to.equal(AssetProxyId.ERC20);
        expect(decodedErc721AssetData.tokenAddress).to.equal(KNOWN_ERC721_ENCODING.address);
        expect(decodedErc721AssetData.assetProxyId).to.equal(AssetProxyId.ERC721);
        expect(decodedErc721AssetData.tokenId).to.be.bignumber.equal(KNOWN_ERC721_ENCODING.tokenId);
    });
    it('should recursively decode nested assetData within multiAssetData', () => {
        const amounts = [new BigNumber(1), new BigNumber(1), new BigNumber(2)];
        const nestedAssetData = [
            KNOWN_ERC20_ENCODING.assetData,
            KNOWN_ERC721_ENCODING.assetData,
            KNOWN_MULTI_ASSET_ENCODING.assetData,
        ];
        const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
        const decodedAssetData = assetDataUtils.decodeMultiAssetDataRecursively(assetData);
        expect(decodedAssetData.assetProxyId).to.equal(AssetProxyId.MultiAsset);
        const expectedAmounts = [new BigNumber(1), new BigNumber(1), new BigNumber(2), new BigNumber(2)];
        expect(decodedAssetData.amounts).to.deep.equal(expectedAmounts);
        const expectedLength = 4;
        expect(decodedAssetData.nestedAssetData.length).to.be.equal(expectedLength);
        const decodedErc20AssetData1 = decodedAssetData.nestedAssetData[0];
        // tslint:disable-next-line:no-unnecessary-type-assertion
        const decodedErc721AssetData1 = decodedAssetData.nestedAssetData[1] as ERC721AssetData;
        const decodedErc20AssetData2 = decodedAssetData.nestedAssetData[2];
        // tslint:disable-next-line:no-unnecessary-type-assertion
        const decodedErc721AssetData2 = decodedAssetData.nestedAssetData[3] as ERC721AssetData;
        expect(decodedErc20AssetData1.tokenAddress).to.equal(KNOWN_ERC20_ENCODING.address);
        expect(decodedErc20AssetData1.assetProxyId).to.equal(AssetProxyId.ERC20);
        expect(decodedErc721AssetData1.tokenAddress).to.equal(KNOWN_ERC721_ENCODING.address);
        expect(decodedErc721AssetData1.assetProxyId).to.equal(AssetProxyId.ERC721);
        expect(decodedErc721AssetData1.tokenId).to.be.bignumber.equal(KNOWN_ERC721_ENCODING.tokenId);
        expect(decodedErc20AssetData2.tokenAddress).to.equal(KNOWN_ERC20_ENCODING.address);
        expect(decodedErc20AssetData2.assetProxyId).to.equal(AssetProxyId.ERC20);
        expect(decodedErc721AssetData2.tokenAddress).to.equal(KNOWN_ERC721_ENCODING.address);
        expect(decodedErc721AssetData2.assetProxyId).to.equal(AssetProxyId.ERC721);
        expect(decodedErc721AssetData2.tokenId).to.be.bignumber.equal(KNOWN_ERC721_ENCODING.tokenId);
    });
});
