diff options
Diffstat (limited to 'packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts')
-rw-r--r-- | packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts new file mode 100644 index 000000000..f81845af9 --- /dev/null +++ b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts @@ -0,0 +1,60 @@ +import * as _ from 'lodash'; +import {Web3Wrapper} from '../web3_wrapper'; +import {ContractWrapper} from './contract_wrapper'; +import {artifacts} from '../artifacts'; +import {TokenTransferProxyContract} from '../types'; + +/** + * This class includes the functionality related to interacting with the TokenTransferProxy contract. + */ +export class TokenTransferProxyWrapper extends ContractWrapper { + private _tokenTransferProxyContractIfExists?: TokenTransferProxyContract; + private _tokenTransferProxyContractAddressFetcher: () => Promise<string>; + constructor(web3Wrapper: Web3Wrapper, tokenTransferProxyContractAddressFetcher: () => Promise<string>) { + super(web3Wrapper); + this._tokenTransferProxyContractAddressFetcher = tokenTransferProxyContractAddressFetcher; + } + /** + * Check if the Exchange contract address is authorized by the TokenTransferProxy 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> { + const tokenTransferProxyContractInstance = await this._getTokenTransferProxyContractAsync(); + const isAuthorized = await tokenTransferProxyContractInstance.authorized.callAsync(exchangeContractAddress); + return isAuthorized; + } + /** + * Get the list of all Exchange contract addresses authorized by the TokenTransferProxy contract. + * @return The list of authorized addresses. + */ + public async getAuthorizedAddressesAsync(): Promise<string[]> { + const tokenTransferProxyContractInstance = await this._getTokenTransferProxyContractAsync(); + const authorizedAddresses = await tokenTransferProxyContractInstance.getAuthorizedAddresses.callAsync(); + return authorizedAddresses; + } + /** + * Retrieves the Ethereum address of the TokenTransferProxy contract deployed on the network + * that the user-passed web3 provider is connected to. + * @returns The Ethereum address of the TokenTransferProxy contract being used. + */ + public async getContractAddressAsync(): Promise<string> { + const proxyInstance = await this._getTokenTransferProxyContractAsync(); + const proxyAddress = proxyInstance.address; + return proxyAddress; + } + private _invalidateContractInstance(): void { + delete this._tokenTransferProxyContractIfExists; + } + private async _getTokenTransferProxyContractAsync(): Promise<TokenTransferProxyContract> { + if (!_.isUndefined(this._tokenTransferProxyContractIfExists)) { + return this._tokenTransferProxyContractIfExists; + } + const contractAddress = await this._tokenTransferProxyContractAddressFetcher(); + const contractInstance = await this._instantiateContractIfExistsAsync<TokenTransferProxyContract>( + artifacts.TokenTransferProxyArtifact, contractAddress, + ); + this._tokenTransferProxyContractIfExists = contractInstance as TokenTransferProxyContract; + return this._tokenTransferProxyContractIfExists; + } +} |