import { Web3Wrapper } from '@0xproject/web3-wrapper'; import { Provider } from 'ethereum-types'; import { TokenRegistryContract } from '../generated_contract_wrappers/token_registry'; import { Token } from './types'; import { constants } from './constants'; export class TokenRegWrapper { private _tokenReg: TokenRegistryContract; private _web3Wrapper: Web3Wrapper; constructor(tokenRegContract: TokenRegistryContract, provider: Provider) { this._tokenReg = tokenRegContract; this._web3Wrapper = new Web3Wrapper(provider); } public async addTokenAsync(token: Token, from: string): Promise { const txHash = await this._tokenReg.addToken.sendTransactionAsync( token.address as string, token.name, token.symbol, token.decimals, token.ipfsHash, token.swarmHash, { from }, ); await this._web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS); return txHash; } public async getTokenMetaDataAsync(tokenAddress: string): Promise { const data = await this._tokenReg.getTokenMetaData.callAsync(tokenAddress); const token: Token = { address: data[0], name: data[1], symbol: data[2], decimals: data[3], ipfsHash: data[4], swarmHash: data[5], }; return token; } public async getTokenByNameAsync(tokenName: string): Promise { const data = await this._tokenReg.getTokenByName.callAsync(tokenName); const token: Token = { address: data[0], name: data[1], symbol: data[2], decimals: data[3], ipfsHash: data[4], swarmHash: data[5], }; return token; } public async getTokenBySymbolAsync(tokenSymbol: string): Promise { const data = await this._tokenReg.getTokenBySymbol.callAsync(tokenSymbol); const token: Token = { address: data[0], name: data[1], symbol: data[2], decimals: data[3], ipfsHash: data[4], swarmHash: data[5], }; return token; } }