Rearranged and refactored main Api Class

src/common/classes/AuracleApi.ts

@@ -1,5 +1,6 @@
 import express, { Application } from 'express'
 import { Connection } from 'typeorm'
+import { VSColors } from '../enums/VSColors'
 import { AuracleApiRouter } from './AuracleApiRouter'
 export class AuracleApi {
     public app: Application
@@ -21,24 +22,17 @@ export class AuracleApi {
 
         // Making sure the DB is up before init routers, modules, etc...
         if (init.database) {
-            this.db_connect(init.database)
-                .then(() => {
+            this.connectDatabase(init.database)
+                .then(async () => {
 
-                    // Sets up tasks to execute...
-                    const tasks = [
-                        this.modules(init.modules),
-                        this.routers(init.routers),
-                        this.middlewares(init.middlewares)
-                    ]
+                    // Loads other services
+                    await this.registerServices(init.routers, init.modules, init.middlewares)
 
-                    Promise.all(tasks)
-                        .catch((err) => {
-                            throw err
-                        })
+                    this.listen()
                 })
                 .catch((err) => {
-                    console.error("App couldn't boot up with the following errors : ")
-                    console.error(err)
+                    console.error(VSColors.red, "[ERROR] App couldn't boot up with the following errors : ")
+                    console.error(VSColors.red, err)
                 })
         }
     }
@@ -46,33 +40,53 @@ export class AuracleApi {
     /**
      * Links the API with a TypeORM connection
      */
-    private db_connect = async (db_driver: Promise<Connection>) => {
+    private async connectDatabase(db_driver: Promise<Connection>) {
         try {
+            // Tries to connect...
             const connection = await db_driver
-            console.info('Connection has been established successfully.')
+            console.info(VSColors.cyan, '[INFO] Connection has been established successfully.')
 
-            // Builds the data schema from registered entities
-            await connection.synchronize()
-            console.info('Database schemas have been generated successfully.')
+            // Should the DB be rebuilt ? Are we in production ?
+            const dropDatabase = (process.env.NODE_ENV === 'production') ? true : false
+
+            // Then builds the data schema from registered entities...
+            await connection.synchronize(dropDatabase)
+            console.info(VSColors.cyan, '[INFO] Database schemas have been generated successfully.')
 
             return connection
         } catch (err) {
-            console.error('Unable to connect to the database.')
+            console.error(VSColors.red, '[ERROR] Unable to connect to the database !')
             throw err
         }
     }
 
+    /**
+     * Registers other express services to add onto the core app
+     *
+     * @param routers A list of Express Routers extended from AuracleApiRouter
+     * @param modules A list of Express extensions
+     * @param middlewares A list of Express middlewares that handle other functions
+     */
+    private async registerServices(routers: Array<AuracleApiRouter>, modules: Array<any>, middlewares: Array<any>) {
+        return Promise.all([
+            this.modules(modules),
+            this.routers(routers),
+            this.middlewares(middlewares)
+        ])
+            .catch((err) => {
+                throw err
+            })
+    }
+
     /**
      * Initializes the App with a bunch of modules like helmet, cors, morgan...
      * @param modules An array of modules and extensions
      */
-    private modules = async (modules: Array<any>) => {
+    private async modules(modules: Array<any>) {
         try {
-            modules.forEach((module) => {
-                this.app.use(module)
-            })
+            modules.forEach(module => this.app.use(module))
         } catch (err) {
-            console.error('Unable to initialize modules and extensions.')
+            console.error(VSColors.red, '[ERROR] Unable to initialize modules and extensions.')
             throw err
         }
     }
@@ -81,26 +95,22 @@ export class AuracleApi {
      * Initializes routers
      * @param routers An array of AuracleApiRouter children objects
      */
-    private routers = async (routers: Array<AuracleApiRouter>) => {
+    private async routers(routers: Array<AuracleApiRouter>) {
         try {
-            routers.forEach((router) => {
-                this.app.use(`${this.baseUrl}`, router.instance)
-            })
+            routers.forEach(router => this.app.use(`${this.baseUrl}`, router.instance))
         } catch (err) {
-            console.error('Unable to initialize routers.')
+            console.error(VSColors.red, '[ERROR] Unable to initialize routers.')
             throw err
         }
     }
 
-    private middlewares = async (middleWares: {
+    private async middlewares(middleWares: {
         forEach: (arg0: (middleWare: any) => void) => void;
-    }) => {
+    }) {
         try {
-            middleWares.forEach((middleWare) => {
-                this.app.use(middleWare)
-            })
+            middleWares.forEach(middleWare => this.app.use(middleWare))
         } catch (err) {
-            console.error('Unable to initialize middlewares.')
+            console.error(VSColors.red, '[ERROR] Unable to initialize middlewares.')
             throw err
         }
     }
@@ -108,9 +118,7 @@ export class AuracleApi {
     /**
      * Allows the App to run on its given port
      */
-    public listen = () => {
-        this.app.listen(this.port, () => {
-            console.log(`App listening on port ${this.port}`)
-        })
+    public listen() {
+        this.app.listen(this.port, () => console.info(VSColors.green, `App listening on port ${this.port} !`))
     }
 }

src/main.ts

@@ -22,7 +22,7 @@ import { SpellRouter } from './routes/SpellRouter';
 
 const apiPort = process.env.API_PORT
 
-const app = new AuracleApi({
+const api = new AuracleApi({
     port: apiPort,
     database: AuracleDatabaseDriver,
 
@@ -36,6 +36,3 @@ const app = new AuracleApi({
         helmet()
     ],
 })
-
-// Listens on apiPort...
-app.listen()