dagcoin-wallet-workflows/lib/payment/payment.js

Dagcoin wallet workflows implementation using Dagcoin Finite State Machine

"use strict";

var StateMachine = require('dagcoin-fsm/lib/stateMachine');

module.exports = function (props) {
    return new StateMachine({
        'properties': {
            name: 'payment-fsm',
            directory: '' + __dirname
        },
        'states': [{
            name: 'new',
            fetchers: [{
                name: 'enoughBytesClient',
                baseBalance: {
                    stable: props.baseBalance.stable
                },
                constants: {
                    MIN_BYTE_FEE: props.constants.MIN_BYTE_FEE
                }
            }]
        }, {
            name: 'check-bytes-funding-node',
            fetchers: [{
                name: 'enoughBytes',
                fundingExchangeClientService: props.fundingExchangeClientService,
                constants: {
                    MIN_BYTE_FEE: props.constants.MIN_BYTE_FEE
                }
            }]
        }, {
            name: 'payment-attempt',
            fetchers: [{
                name: 'paymentSent',
                fc: props.fc
            }],
            actionsIn: [{
                name: 'sendPayment',
                paymentProps: props.paymentProps,
                walletAddresses: props.fundingExchangeClientService.walletAddresses,
                dagcoinOrigin: props.fundingExchangeClientService.dagcoinOrigin,
                dagcoinDestination: props.fundingExchangeClientService.dagcoinDestination,
                fc: props.fc,
                walletDefinedByKeys: props.walletDefinedByKeys,
                constants: {
                    DAG_FEE: props.constants.DAG_FEE
                }
            }]
        }, {
            name: 'payment-done',
            isFinal: true
        }, {
            name: 'payment-failed',
            isFinal: true
        }],
        'firstState': 'new',
        'transitions': [{
            fromState: 'new', toState: 'payment-attempt',
            checkCondition: function checkCondition(data) {
                return data['enoughBytesClient'];
            }
        }, {
            fromState: 'new', toState: 'check-bytes-funding-node',
            checkCondition: function checkCondition(data) {
                return !data['enoughDagcoins'];
            }
        }, {
            fromState: 'check-bytes-funding-node', toState: 'payment-attempt',
            checkCondition: function checkCondition(data) {
                return data['enoughBytes'];
            }
        }, {
            fromState: 'check-bytes-funding-node', toState: 'payment-failed',
            checkCondition: function checkCondition(data) {
                return !data['enoughBytes'];
            }
        }, {
            fromState: 'payment-attempt', toState: 'payment-failed',
            checkCondition: function checkCondition(data) {
                return !data['paymentSent'];
            }
        }, {
            fromState: 'payment-attempt', toState: 'payment-done',
            checkCondition: function checkCondition(data) {
                return data['paymentSent'];
            }
        }]
    });
};