jingtum-lib/src/request.js

jingtum lib

'use strict';

var Event = require('events').EventEmitter;
var util = require('util');
var utils = require('./utils');

/**
 * request server and account info without secret
 * @param remote
 * @param command
 * @constructor
 */
function Request(remote, command, filter) {
    Event.call(this);
    this._remote = remote;
    this._command = command;
    this._filter = filter || function(v) {return v};
    // directly modify message is supported
    this.message = {};
}
util.inherits(Request, Event);

Request.prototype.submit = function(callback) {
    var self = this;
    for(var key in self.message){
        if(self.message[key] instanceof Error){
            return callback(self.message[key].message);
        }
    }
    self._remote._submit(self._command, self.message, self._filter, callback);
};

Request.prototype.selectLedger = function(ledger) {
    if (typeof ledger === 'string'
        && ~utils.LEDGER_STATES.indexOf(ledger)) {
        this.message.ledger_index = ledger;
    } else if (Number(ledger)) {
        this.message.ledger_index = Number(ledger);
    } else if (/^[A-F0-9]+$/.test(ledger)) {
        this.message.ledger_hash = ledger;
    } else {
        this.message.ledger_index = 'validated';
    }
    return this;
};

module.exports = Request;