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Diffstat (limited to 'packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts')
-rw-r--r-- | packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts new file mode 100644 index 000000000..883d7c4d6 --- /dev/null +++ b/packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts @@ -0,0 +1,84 @@ +import { Web3Wrapper } from '@0xproject/web3-wrapper'; +import { ContractAbi } from 'ethereum-types'; +import * as _ from 'lodash'; + +import { artifacts } from '../artifacts'; +import { assert } from '../utils/assert'; + +import { ContractWrapper } from './contract_wrapper'; +import { ERC20ProxyContract } from './generated/erc20_proxy'; + +/** + * This class includes the functionality related to interacting with the ERC20Proxy contract. + */ +export class ERC20ProxyWrapper extends ContractWrapper { + public abi: ContractAbi = artifacts.ERC20Proxy.compilerOutput.abi; + private _erc20ProxyContractIfExists?: ERC20ProxyContract; + private _contractAddressIfExists?: string; + constructor(web3Wrapper: Web3Wrapper, networkId: number, contractAddressIfExists?: string) { + super(web3Wrapper, networkId); + this._contractAddressIfExists = contractAddressIfExists; + } + /** + * Get the 4 bytes ID of this asset proxy + * @return Proxy id + */ + public async getProxyIdAsync(): Promise<string> { + const ERC20ProxyContractInstance = await this._getERC20ProxyContractAsync(); + const proxyId = await ERC20ProxyContractInstance.getProxyId.callAsync(); + return proxyId; + } + /** + * Check if the Exchange contract address is authorized by the ERC20Proxy contract. + * @param exchangeContractAddress The hex encoded address of the Exchange contract to call. + * @return Whether the exchangeContractAddress is authorized. + */ + public async isAuthorizedAsync(exchangeContractAddress: string): Promise<boolean> { + assert.isETHAddressHex('exchangeContractAddress', exchangeContractAddress); + const normalizedExchangeContractAddress = exchangeContractAddress.toLowerCase(); + const ERC20ProxyContractInstance = await this._getERC20ProxyContractAsync(); + const isAuthorized = await ERC20ProxyContractInstance.authorized.callAsync(normalizedExchangeContractAddress); + return isAuthorized; + } + /** + * Get the list of all Exchange contract addresses authorized by the ERC20Proxy contract. + * @return The list of authorized addresses. + */ + public async getAuthorizedAddressesAsync(): Promise<string[]> { + const ERC20ProxyContractInstance = await this._getERC20ProxyContractAsync(); + const authorizedAddresses = await ERC20ProxyContractInstance.getAuthorizedAddresses.callAsync(); + return authorizedAddresses; + } + /** + * Retrieves the Ethereum address of the ERC20Proxy contract deployed on the network + * that the user-passed web3 provider is connected to. + * @returns The Ethereum address of the ERC20Proxy contract being used. + */ + public getContractAddress(): string { + const contractAddress = this._getContractAddress(artifacts.ERC20Proxy, this._contractAddressIfExists); + return contractAddress; + } + // HACK: We don't want this method to be visible to the other units within that package but not to the end user. + // TS doesn't give that possibility and therefore we make it private and access it over an any cast. Because of that tslint sees it as unused. + // tslint:disable-next-line:no-unused-variable + private _invalidateContractInstance(): void { + delete this._erc20ProxyContractIfExists; + } + private async _getERC20ProxyContractAsync(): Promise<ERC20ProxyContract> { + if (!_.isUndefined(this._erc20ProxyContractIfExists)) { + return this._erc20ProxyContractIfExists; + } + const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync( + artifacts.ERC20Proxy, + this._contractAddressIfExists, + ); + const contractInstance = new ERC20ProxyContract( + abi, + address, + this._web3Wrapper.getProvider(), + this._web3Wrapper.getContractDefaults(), + ); + this._erc20ProxyContractIfExists = contractInstance; + return this._erc20ProxyContractIfExists; + } +} |