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center/messaging/README.md
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| 1 | +Pustaka untuk center transaksi bertipe messaging (eg: sms, xmpp, telegram) |
center/messaging/trx-center.js
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| 1 | +"use strict"; | |
| 2 | + | |
| 3 | +const path = require('path'); | |
| 4 | +const request = require('request'); | |
| 5 | +const strftime = require('strftime'); | |
| 6 | +const config = require('../../config'); | |
| 7 | +const logger = require('../../logger'); | |
| 8 | + | |
| 9 | +const module_name = path.basename(__filename); | |
| 10 | + | |
| 11 | +let transport; | |
| 12 | + | |
| 13 | +function onOnline(params) { | |
| 14 | + logger.info('CENTER is ONLINE, ready to communicate'); | |
| 15 | + | |
| 16 | +} | |
| 17 | + | |
| 18 | +function onIncomingMessage(paramsFromTransport) { | |
| 19 | + logger.verbose('Reporting message to CORE') | |
| 20 | + | |
| 21 | + const command = paramsFromTransport.msg.split(/[\., ]+/)[0].toUpperCase(); | |
| 22 | + | |
| 23 | + if (config.commands.balance.indexOf(command) >= 0) { | |
| 24 | + executeBalanceCheck(paramsFromTransport); | |
| 25 | + } | |
| 26 | + else if (config.commands.price.indexOf(command) >= 0) { | |
| 27 | + executePriceCheck(paramsFromTransport); | |
| 28 | + } | |
| 29 | + else { | |
| 30 | + executePrepaidBuy(paramsFromTransport); | |
| 31 | + } | |
| 32 | +} | |
| 33 | + | |
| 34 | +function executeBalanceCheck(paramsFromTransport) { | |
| 35 | + const terminal_name = paramsFromTransport.partner.toLowerCase(); | |
| 36 | + const password = paramsFromTransport.msg.trim().split(/[\., ]+/)[1]; | |
| 37 | + | |
| 38 | + const requestOptions = { | |
| 39 | + url: config.core_url + '/services/balance', | |
| 40 | + qs: { | |
| 41 | + terminal_name: terminal_name, | |
| 42 | + password: password | |
| 43 | + } | |
| 44 | + } | |
| 45 | + | |
| 46 | + requestToCore(requestOptions); | |
| 47 | +} | |
| 48 | + | |
| 49 | +function executePriceCheck(paramsFromTransport) { | |
| 50 | + const requestOptions = { | |
| 51 | + url: config.core_url + '/services/pricelist', | |
| 52 | + qs: { | |
| 53 | + terminal_name: paramsFromTransport.partner.toLowerCase(), | |
| 54 | + keyword: paramsFromTransport.msg.trim().split(/[\., ]+/)[1] | |
| 55 | + } | |
| 56 | + } | |
| 57 | + | |
| 58 | + requestToCore(requestOptions); | |
| 59 | +} | |
| 60 | + | |
| 61 | +function parseBalanceResponse(body) { | |
| 62 | + let result; | |
| 63 | + | |
| 64 | + try { | |
| 65 | + result = JSON.parse(body); | |
| 66 | + } | |
| 67 | + catch(e) { | |
| 68 | + logger.warn('Error JSON parsing', {module_name: module_name, method_name: 'parseBalanceResponse', body: body}) | |
| 69 | + result = null; | |
| 70 | + } | |
| 71 | + return result; | |
| 72 | +} | |
| 73 | + | |
| 74 | +function generateRequestId(req) { | |
| 75 | + return 'AUTO_' + req.product_name + '_' + req.destination + '_' + strftime('%Y%m%d'); | |
| 76 | +} | |
| 77 | + | |
| 78 | +function executePrepaidBuy(paramsFromTransport) { | |
| 79 | + let tokens = paramsFromTransport.msg.trim().split(/[\., ]+/); | |
| 80 | + | |
| 81 | + let qs = { | |
| 82 | + request_id: null, | |
| 83 | + terminal_name: paramsFromTransport.partner.toLowerCase(), | |
| 84 | + product_name: tokens[0].toUpperCase(), | |
| 85 | + destination: tokens[1].toUpperCase(), | |
| 86 | + password: tokens[2], | |
| 87 | + origin: config.origin || config.username, | |
| 88 | + report_port: config.listen_port || '80', | |
| 89 | + msg: paramsFromTransport.msg | |
| 90 | + } | |
| 91 | + | |
| 92 | + qs.request_id = generateRequestId(qs); | |
| 93 | + if (tokens[3]) { | |
| 94 | + qs.request_id += '_' + tokens[3]; | |
| 95 | + } | |
| 96 | + | |
| 97 | + let requestOptions = { | |
| 98 | + url: config.core_url + '/prepaid/buy', | |
| 99 | + qs: qs | |
| 100 | + } | |
| 101 | + | |
| 102 | + requestToCore(requestOptions); | |
| 103 | +} | |
| 104 | + | |
| 105 | +function requestToCore(requestOptions, partner) { | |
| 106 | + logger.verbose('Requesting service to CORE', requestOptions); | |
| 107 | + | |
| 108 | + request(requestOptions, function(err, res, body) { | |
| 109 | + if (err || res.statusCode != 200) { | |
| 110 | + logger.warn('Error requesting to CORE', {module_name: module_name, method_name: 'requestToCore', requestOptions: requestOptions, err: err}); | |
| 111 | + transport.send(requestOptions.qs.terminal_name, 'INTERNAL ERROR'); | |
| 112 | + return; | |
| 113 | + } | |
| 114 | + | |
| 115 | + let result = parseBalanceResponse(body); | |
| 116 | + if (!result || !result.message) { | |
| 117 | + transport.send(requestOptions.qs.terminal_name, 'INTERNAL ERROR'); | |
| 118 | + return; | |
| 119 | + } | |
| 120 | + | |
| 121 | + transport.send(requestOptions.qs.terminal_name, result.message); | |
| 122 | + }) | |
| 123 | +} | |
| 124 | + | |
| 125 | +function parseCoreMessage(body) { | |
| 126 | + let coreRes; | |
| 127 | + try { | |
| 128 | + coreRes = JSON.parse(body) | |
| 129 | + } | |
| 130 | + catch(err) { | |
| 131 | + logger.warn('Exception on parsing CORE response as JSON', {body: body, err: err}); | |
| 132 | + coreRes = null; | |
| 133 | + } | |
| 134 | + return coreRes; | |
| 135 | +} | |
| 136 | + | |
| 137 | +const callback = { | |
| 138 | + onOnline: onOnline, | |
| 139 | + onIncomingMessage: onIncomingMessage | |
| 140 | +} | |
| 141 | + | |
| 142 | +function setTransport(_transport) { | |
| 143 | + transport = _transport; | |
| 144 | +} | |
| 145 | + | |
| 146 | +exports.callback = callback; | |
| 147 | +exports.setTransport = setTransport; |