machinomy/lib/ChannelInflator.js

Micropayments powered by Ethereum

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const PaymentChannel_1 = require("./PaymentChannel");
const ChannelState_1 = require("./ChannelState");
const bignumber_js_1 = require("bignumber.js");
class ChannelInflator {
    constructor(channelEthContract, channelTokenContract) {
        this.channelEthContract = channelEthContract;
        this.channelTokenContract = channelTokenContract;
    }
    static isTokenContractDefined(tokenContract) {
        // tslint:disable-next-line:strict-type-predicates
        return tokenContract !== undefined && tokenContract !== null && tokenContract.startsWith('0x') && parseInt(tokenContract, 16) !== 0;
    }
    async inflate(paymentChannelJSON) {
        const tokenContract = paymentChannelJSON.tokenContract;
        const channelId = paymentChannelJSON.channelId;
        const contract = this.actualContract(tokenContract);
        const state = await contract.getState(channelId);
        const channel = await contract.channelById(channelId);
        if (channel) {
            const value = channel[2];
            const settlingUntil = new bignumber_js_1.BigNumber(channel[4]);
            return new PaymentChannel_1.PaymentChannel(paymentChannelJSON.sender, paymentChannelJSON.receiver, paymentChannelJSON.channelId, value, paymentChannelJSON.spent, state === ChannelState_1.ChannelState.Impossible ? ChannelState_1.ChannelState.Settled : state, paymentChannelJSON.tokenContract, paymentChannelJSON.settlementPeriod, settlingUntil);
        }
        else {
            return null;
        }
    }
    actualContract(tokenContract) {
        if (ChannelInflator.isTokenContractDefined(tokenContract)) {
            return this.channelTokenContract;
        }
        else {
            return this.channelEthContract;
        }
    }
}
exports.default = ChannelInflator;
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