69 lines
3.1 KiB
TypeScript
69 lines
3.1 KiB
TypeScript
import { Web3Wrapper } from '@0xproject/web3-wrapper';
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import * as _ from 'lodash';
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import { artifacts } from '../artifacts';
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import { ContractWrapper } from './contract_wrapper';
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import { TokenTransferProxyContract } from './generated/token_transfer_proxy';
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/**
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* This class includes the functionality related to interacting with the TokenTransferProxy contract.
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*/
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export class TokenTransferProxyWrapper extends ContractWrapper {
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private _tokenTransferProxyContractIfExists?: TokenTransferProxyContract;
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private _contractAddressIfExists?: string;
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constructor(web3Wrapper: Web3Wrapper, networkId: number, contractAddressIfExists?: string) {
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super(web3Wrapper, networkId);
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this._contractAddressIfExists = contractAddressIfExists;
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}
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/**
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* Check if the Exchange contract address is authorized by the TokenTransferProxy contract.
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* @param exchangeContractAddress The hex encoded address of the Exchange contract to call.
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* @return Whether the exchangeContractAddress is authorized.
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*/
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public async isAuthorizedAsync(exchangeContractAddress: string): Promise<boolean> {
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const tokenTransferProxyContractInstance = await this._getTokenTransferProxyContractAsync();
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const isAuthorized = await tokenTransferProxyContractInstance.authorized.callAsync(exchangeContractAddress);
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return isAuthorized;
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}
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/**
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* Get the list of all Exchange contract addresses authorized by the TokenTransferProxy contract.
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* @return The list of authorized addresses.
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*/
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public async getAuthorizedAddressesAsync(): Promise<string[]> {
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const tokenTransferProxyContractInstance = await this._getTokenTransferProxyContractAsync();
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const authorizedAddresses = await tokenTransferProxyContractInstance.getAuthorizedAddresses.callAsync();
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return authorizedAddresses;
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}
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/**
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* Retrieves the Ethereum address of the TokenTransferProxy contract deployed on the network
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* that the user-passed web3 provider is connected to.
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* @returns The Ethereum address of the TokenTransferProxy contract being used.
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*/
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public getContractAddress(): string {
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const contractAddress = this._getContractAddress(
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artifacts.TokenTransferProxyArtifact,
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this._contractAddressIfExists,
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);
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return contractAddress;
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}
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private _invalidateContractInstance(): void {
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delete this._tokenTransferProxyContractIfExists;
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}
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private async _getTokenTransferProxyContractAsync(): Promise<TokenTransferProxyContract> {
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if (!_.isUndefined(this._tokenTransferProxyContractIfExists)) {
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return this._tokenTransferProxyContractIfExists;
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}
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const web3ContractInstance = await this._instantiateContractIfExistsAsync(
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artifacts.TokenTransferProxyArtifact,
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this._contractAddressIfExists,
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);
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const contractInstance = new TokenTransferProxyContract(
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web3ContractInstance,
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this._web3Wrapper.getContractDefaults(),
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);
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this._tokenTransferProxyContractIfExists = contractInstance;
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return this._tokenTransferProxyContractIfExists;
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}
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}
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