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import { ERC721ProxyContract } from '@0x/abi-gen-wrappers';
import { ERC721Proxy } from '@0x/contract-artifacts';
import { AssetProxyId } from '@0x/types';
import { Web3Wrapper } from '@0x/web3-wrapper';
import { ContractAbi } from 'ethereum-types';
import * as _ from 'lodash';
import { assert } from '../utils/assert';
import { _getDefaultContractAddresses } from '../utils/contract_addresses';
import { ContractWrapper } from './contract_wrapper';
/**
* This class includes the functionality related to interacting with the ERC721Proxy contract.
*/
export class ERC721ProxyWrapper extends ContractWrapper {
public abi: ContractAbi = ERC721Proxy.compilerOutput.abi;
public address: string;
private _erc721ProxyContractIfExists?: ERC721ProxyContract;
/**
* Instantiate ERC721ProxyWrapper
* @param web3Wrapper Web3Wrapper instance to use
* @param networkId Desired networkId
* @param address The address of the ERC721Proxy contract. If undefined,
* will default to the known address corresponding to the networkId.
*/
constructor(web3Wrapper: Web3Wrapper, networkId: number, address?: string) {
super(web3Wrapper, networkId);
this.address = _.isUndefined(address) ? _getDefaultContractAddresses(networkId).erc721Proxy : address;
}
/**
* Get the 4 bytes ID of this asset proxy
* @return Proxy id
*/
public async getProxyIdAsync(): Promise<AssetProxyId> {
const ERC721ProxyContractInstance = await this._getERC721ProxyContract();
// Note(albrow): Below is a TSLint false positive. Code won't compile if
// you remove the type assertion.
/* tslint:disable-next-line:no-unnecessary-type-assertion */
const proxyId = (await ERC721ProxyContractInstance.getProxyId.callAsync()) as AssetProxyId;
return proxyId;
}
/**
* Check if the Exchange contract address is authorized by the ERC721Proxy 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 ERC721ProxyContractInstance = await this._getERC721ProxyContract();
const isAuthorized = await ERC721ProxyContractInstance.authorized.callAsync(normalizedExchangeContractAddress);
return isAuthorized;
}
/**
* Get the list of all Exchange contract addresses authorized by the ERC721Proxy contract.
* @return The list of authorized addresses.
*/
public async getAuthorizedAddressesAsync(): Promise<string[]> {
const ERC721ProxyContractInstance = await this._getERC721ProxyContract();
const authorizedAddresses = await ERC721ProxyContractInstance.getAuthorizedAddresses.callAsync();
return authorizedAddresses;
}
private _getERC721ProxyContract(): ERC721ProxyContract {
if (!_.isUndefined(this._erc721ProxyContractIfExists)) {
return this._erc721ProxyContractIfExists;
}
const contractInstance = new ERC721ProxyContract(
this.abi,
this.address,
this._web3Wrapper.getProvider(),
this._web3Wrapper.getContractDefaults(),
);
this._erc721ProxyContractIfExists = contractInstance;
return this._erc721ProxyContractIfExists;
}
}
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