feat(js): include user defined routes from *_routes.js files

In order to include custom routes:
- create a file <name>_routes.js
- export a function "register" that accepts 2 arguments (express router and MySQL connection pool)

Part of #27

Author: php-coder

examples/js/express/mysql/app.js

@@ -1,6 +1,7 @@
 const express = require('express')
 const mysql = require('mysql')
 const routes = require('./routes')
+const custom_routes = require('./custom_routes')
 
 const app = express()
 app.use(express.json())
@@ -34,6 +35,8 @@ const pool = mysql.createPool({
 
 routes.register(app, pool)
 
+custom_routes.register(app, pool)
+
 const port = process.env.PORT || 3000
 app.listen(port, () => {
     console.log(`Listen on ${port}`)

examples/js/express/mysql/custom_routes.js

@@ -0,0 +1,7 @@
+exports.register = (app, pool) => {
+
+    app.get('/custom/route', (req, res, next) => {
+        res.json({ "custom": true })
+    })
+
+}

src/templates/app.js.ejs

@@ -1,6 +1,17 @@
+<%
+// "custom_routes.js" => "custom_routes"
+function removeExtension(filename) {
+    return filename.replace(/\.js$/, '')
+}
+-%>
 const express = require('express')
 const mysql = require('mysql')
 const routes = require('./routes')
+<% customRouteFilenames.forEach(filename => {
+    const routerName = removeExtension(filename)
+-%>
+const <%- routerName %> = require('./<%- routerName %>')
+<% }) -%>
 
 const app = express()
 app.use(express.json())
@@ -35,6 +46,11 @@ const pool = mysql.createPool({
 })
 
 routes.register(app, pool)
+<% customRouteFilenames.forEach(filename => {
+    const routerName = removeExtension(filename)
+%>
+<%- routerName %>.register(app, pool)
+<% }) -%>
 
 const port = process.env.PORT || 3000
 app.listen(port, () => {