cic-staff-client/src/app/_helpers/accountIndex.ts

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// @ts-ignore
import * as accountIndex from '@src/assets/js/block-sync/data/AccountRegistry.json';
import {environment} from '@src/environments/environment';
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const Web3 = require('web3');
const web3 = new Web3(environment.web3Provider);
const abi = accountIndex.default;
export class AccountIndex {
contractAddress: string;
signerAddress: string;
contract: any;
constructor(contractAddress: string, signerAddress?: string) {
this.contractAddress = contractAddress;
this.contract = new web3.eth.Contract(abi, this.contractAddress);
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if (signerAddress) {
this.signerAddress = signerAddress;
} else {
this.signerAddress = web3.eth.accounts[0];
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}
}
public async totalAccounts(): Promise<number> {
return this.contract.methods.count().call();
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}
public async haveAccount(address: string): Promise<boolean> {
return await this.contract.methods.accountIndex(address).call() !== 0;
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}
public async last(numberOfAccounts: number): Promise<Array<string>> {
const count = await this.totalAccounts();
let lowest = count - numberOfAccounts - 1;
if (lowest < 0) {
lowest = 0;
}
let accounts = [];
for (let i = count - 1; i > lowest; i--) {
const account = await this.contract.methods.accounts(i).call();
accounts.push(account);
}
return accounts;
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}
public async addToAccountRegistry(address: string): Promise<boolean> {
if (!await this.haveAccount(address)) {
return await this.contract.methods.add(address).send({from: this.signerAddress});
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} else {
return await this.haveAccount(address);
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}
}
}