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Diffstat (limited to 'packages/contracts/src/utils/erc721_wrapper.ts')
-rw-r--r-- | packages/contracts/src/utils/erc721_wrapper.ts | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/packages/contracts/src/utils/erc721_wrapper.ts b/packages/contracts/src/utils/erc721_wrapper.ts new file mode 100644 index 000000000..5b5de262f --- /dev/null +++ b/packages/contracts/src/utils/erc721_wrapper.ts @@ -0,0 +1,145 @@ +import { ZeroEx } from '0x.js'; +import { Provider } from '@0xproject/types'; +import { BigNumber } from '@0xproject/utils'; +import * as _ from 'lodash'; + +import { DummyERC721TokenContract } from '../contract_wrappers/generated/dummy_e_r_c721_token'; +import { ERC721ProxyContract } from '../contract_wrappers/generated/e_r_c721_proxy'; + +import { artifacts } from './artifacts'; +import { constants } from './constants'; +import { ERC721TokenIdsByOwner } from './types'; +import { txDefaults } from './web3_wrapper'; + +export class ERC721Wrapper { + private _tokenOwnerAddresses: string[]; + private _contractOwnerAddress: string; + private _provider: Provider; + private _dummyTokenContracts?: DummyERC721TokenContract[]; + private _proxyContract?: ERC721ProxyContract; + private _initialTokenIdsByOwner: ERC721TokenIdsByOwner = {}; + constructor(provider: Provider, tokenOwnerAddresses: string[], contractOwnerAddress: string) { + this._provider = provider; + this._tokenOwnerAddresses = tokenOwnerAddresses; + this._contractOwnerAddress = contractOwnerAddress; + } + public async deployDummyTokensAsync(): Promise<DummyERC721TokenContract[]> { + this._dummyTokenContracts = await Promise.all( + _.times(constants.NUM_DUMMY_ERC721_TO_DEPLOY, () => + DummyERC721TokenContract.deployFrom0xArtifactAsync( + artifacts.DummyERC721Token, + this._provider, + txDefaults, + constants.DUMMY_TOKEN_NAME, + constants.DUMMY_TOKEN_SYMBOL, + ), + ), + ); + return this._dummyTokenContracts; + } + public async deployProxyAsync(): Promise<ERC721ProxyContract> { + this._proxyContract = await ERC721ProxyContract.deployFrom0xArtifactAsync( + artifacts.ERC721Proxy, + this._provider, + txDefaults, + ); + return this._proxyContract; + } + public async setBalancesAndAllowancesAsync() { + this._validateDummyTokenContractsExistOrThrow(); + this._validateProxyContractExistsOrThrow(); + const setBalancePromises: Array<Promise<string>> = []; + const setAllowancePromises: Array<Promise<string>> = []; + this._initialTokenIdsByOwner = {}; + _.forEach(this._dummyTokenContracts, dummyTokenContract => { + _.forEach(this._tokenOwnerAddresses, tokenOwnerAddress => { + _.forEach(_.range(constants.NUM_ERC721_TOKENS_TO_MINT), () => { + const tokenId = ZeroEx.generatePseudoRandomSalt(); + setBalancePromises.push( + dummyTokenContract.mint.sendTransactionAsync(tokenOwnerAddress, tokenId, { + from: this._contractOwnerAddress, + }), + ); + if (_.isUndefined(this._initialTokenIdsByOwner[tokenOwnerAddress])) { + this._initialTokenIdsByOwner[tokenOwnerAddress] = { + [dummyTokenContract.address]: [], + }; + } + if (_.isUndefined(this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address])) { + this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address] = []; + } + this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address].push(tokenId); + }); + const shouldApprove = true; + setAllowancePromises.push( + dummyTokenContract.setApprovalForAll.sendTransactionAsync( + (this._proxyContract as ERC721ProxyContract).address, + shouldApprove, + { from: tokenOwnerAddress }, + ), + ); + }); + }); + await Promise.all([...setBalancePromises, ...setAllowancePromises]); + } + public async getBalancesAsync(): Promise<ERC721TokenIdsByOwner> { + this._validateDummyTokenContractsExistOrThrow(); + this._validateBalancesAndAllowancesSetOrThrow(); + const tokenIdsByOwner: ERC721TokenIdsByOwner = {}; + const tokenOwnerPromises: Array<Promise<string>> = []; + const tokenInfo: Array<{ tokenId: BigNumber; tokenAddress: string }> = []; + _.forEach(this._dummyTokenContracts, dummyTokenContract => { + _.forEach(this._tokenOwnerAddresses, tokenOwnerAddress => { + const initialTokenOwnerIds = this._initialTokenIdsByOwner[tokenOwnerAddress][ + dummyTokenContract.address + ]; + _.forEach(initialTokenOwnerIds, tokenId => { + tokenOwnerPromises.push(dummyTokenContract.ownerOf.callAsync(tokenId)); + tokenInfo.push({ + tokenId, + tokenAddress: dummyTokenContract.address, + }); + }); + }); + }); + const tokenOwnerAddresses = await Promise.all(tokenOwnerPromises); + _.forEach(tokenOwnerAddresses, (tokenOwnerAddress, ownerIndex) => { + const tokenAddress = tokenInfo[ownerIndex].tokenAddress; + const tokenId = tokenInfo[ownerIndex].tokenId; + if (_.isUndefined(tokenIdsByOwner[tokenOwnerAddress])) { + tokenIdsByOwner[tokenOwnerAddress] = { + [tokenAddress]: [], + }; + } + if (_.isUndefined(tokenIdsByOwner[tokenOwnerAddress][tokenAddress])) { + tokenIdsByOwner[tokenOwnerAddress][tokenAddress] = []; + } + tokenIdsByOwner[tokenOwnerAddress][tokenAddress].push(tokenId); + }); + return tokenIdsByOwner; + } + public getTokenOwnerAddresses(): string[] { + return this._tokenOwnerAddresses; + } + public getTokenAddresses(): string[] { + const tokenAddresses = _.map(this._dummyTokenContracts, dummyTokenContract => dummyTokenContract.address); + return tokenAddresses; + } + private _validateDummyTokenContractsExistOrThrow() { + if (_.isUndefined(this._dummyTokenContracts)) { + throw new Error('Dummy ERC721 tokens not yet deployed, please call "deployDummyTokensAsync"'); + } + } + private _validateProxyContractExistsOrThrow() { + if (_.isUndefined(this._proxyContract)) { + throw new Error('ERC721 proxy contract not yet deployed, please call "deployProxyAsync"'); + } + } + private _validateBalancesAndAllowancesSetOrThrow() { + if (_.keys(this._initialTokenIdsByOwner).length === 0) { + throw new Error( + 'Dummy ERC721 balances and allowances not yet set, please call "setBalancesAndAllowancesAsync"', + ); + } + } +} |