REST API upgrade

source/app.js

@@ -0,0 +1,64 @@
+const {
+    config_path,
+    routes_path,
+    init_log_path,
+    runtime_log_path
+} = require(process.argv[process.argv.length - 1])
+
+const config = require(config_path)
+const express = require('express')
+const logger = require('./lib/logger')
+const routes = require(routes_path)
+
+// loggers
+const logger_init = new logger(init_log_path)
+const logger_runtime = new logger(runtime_log_path)
+
+const app = express()
+
+// logger
+app.use(function(req, res, next) {
+    var {url} = req
+    logger_runtime.log(url)
+    next()
+})
+
+// CORS
+app.options(function(req, res) {
+    //'GET, POST, OPTIONS, PUT, PATCH, DELETE'
+    res.setHeader('Access-Control-Allow-Methods', 'GET, OPTIONS')
+    res.end()
+})
+
+app.use(function (req, res, next) {
+    const {origin} = req.headers
+    if (config.cors.includes(origin)) {
+        res.setHeader('Access-Control-Allow-Origin', origin)
+    }
+    res.setHeader('Access-Control-Allow-Credentials', true)
+    res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type')
+    next()
+})
+
+//routes
+app.use(routes)
+
+// errors handlers
+app.use(function(error, req, res, next) {
+    // errors
+    logger_runtime.error(error)
+    res.send(error.message)
+    next()
+})
+
+app.use(function(req, res, next) {
+    res.end()
+})
+
+// start listen server
+try {
+    app.listen(config.port, config.ip)
+    logger_init.log(`Listening at http://${config.ip}:${config.port}`)
+} catch (e) {
+    return logger_init.error(e)
+}