refactor: base and config

package-lock.json

@@ -10,7 +10,6 @@
       "license": "ISC",
       "dependencies": {
         "bcrypt": "^5.1.1",
-        "body-parser": "^1.20.2",
         "cors": "^2.8.5",
         "dotenv": "^16.3.1",
         "express": "^4.18.2",
@@ -395,42 +394,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/body-parser": {
-      "version": "1.20.2",
-      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.2.tgz",
-      "integrity": "sha512-ml9pReCu3M61kGlqoTm2umSXTlRTuGTx0bfYj+uIUKKYycG5NtSbeetV3faSU6R7ajOPw0g/J1PvK4qNy7s5bA==",
-      "dependencies": {
-        "bytes": "3.1.2",
-        "content-type": "~1.0.5",
-        "debug": "2.6.9",
-        "depd": "2.0.0",
-        "destroy": "1.2.0",
-        "http-errors": "2.0.0",
-        "iconv-lite": "0.4.24",
-        "on-finished": "2.4.1",
-        "qs": "6.11.0",
-        "raw-body": "2.5.2",
-        "type-is": "~1.6.18",
-        "unpipe": "1.0.0"
-      },
-      "engines": {
-        "node": ">= 0.8",
-        "npm": "1.2.8000 || >= 1.4.16"
-      }
-    },
-    "node_modules/body-parser/node_modules/debug": {
-      "version": "2.6.9",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-      "dependencies": {
-        "ms": "2.0.0"
-      }
-    },
-    "node_modules/body-parser/node_modules/ms": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A=="
-    },
     "node_modules/brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -1753,20 +1716,6 @@
         "node": ">= 0.6"
       }
     },
-    "node_modules/raw-body": {
-      "version": "2.5.2",
-      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.5.2.tgz",
-      "integrity": "sha512-8zGqypfENjCIqGhgXToC8aB2r7YrBX+AQAfIPs/Mlk+BtPTztOvTS01NRW/3Eh60J+a48lt8qsCzirQ6loCVfA==",
-      "dependencies": {
-        "bytes": "3.1.2",
-        "http-errors": "2.0.0",
-        "iconv-lite": "0.4.24",
-        "unpipe": "1.0.0"
-      },
-      "engines": {
-        "node": ">= 0.8"
-      }
-    },
     "node_modules/readable-stream": {
       "version": "3.6.2",
       "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",

package.json

@@ -19,7 +19,6 @@
   },
   "dependencies": {
     "bcrypt": "^5.1.1",
-    "body-parser": "^1.20.2",
     "cors": "^2.8.5",
     "dotenv": "^16.3.1",
     "express": "^4.18.2",

src/configs/config.ts

@@ -0,0 +1,17 @@
+import { Env } from "./env";
+import dotenv from "dotenv";
+dotenv.config();
+
+export interface Config {
+  port: number;
+  db: {
+    uri: string;
+  };
+}
+
+export const config: Config = {
+  port: Env.get("PORT", 4000).toNumber(),
+  db: {
+    uri: Env.get("DB_URI").toString(),
+  },
+};

src/configs/database.ts

@@ -1,20 +1,13 @@
-import mongoose from 'mongoose';
+import mongoose from "mongoose";
+import { config } from "./config";
 
-const uriMap = {
-    local: process.env.LOCAL_DB_CONNECTION_STRING,
-    development: process.env.DEV_DB_CONNECTION_STRING,
+export const connectDatabase = async () => {
+  return mongoose
+    .connect(config.db.uri)
+    .then(() => {
+      console.log(`Connected to MongoDB database successfully!`);
+    })
+    .catch((err) => {
+      console.error("MongoDB Error: ", err);
+    });
 };
-
-console.log("CURRENT_ENV", process.env.CURRENT_ENV);
-const selectedEnv = process.env.CURRENT_ENV || 'development';
-let uri = uriMap[selectedEnv];
-console.log(uri);
-
-export const connection = async () => {
-    return mongoose.connect(uri)
-        .then(() => {
-            console.log(`Connected to MongoDB database successfully on ${selectedEnv} environment!`);
-        }).catch((err) => {
-            console.log("MongoDB Error: ", err);
-        })
-}

src/configs/env.ts

@@ -0,0 +1,25 @@
+export class EnvValue {
+  constructor(public value: string | number | boolean) {}
+
+  toString(): string {
+    return String(this.value);
+  }
+  toNumber(): number {
+    return Number(this.value);
+  }
+  toBoolean(): boolean {
+    return this.value === "true";
+  }
+}
+
+export class Env {
+  static get(key: string, defaultValue?: string | number | boolean): EnvValue {
+    const value = process.env[key] || defaultValue;
+
+    if (!value) {
+      throw new Error(`Environment variable ${key} not found`);
+    }
+
+    return new EnvValue(value);
+  }
+}

src/index.ts

@@ -1,26 +1,27 @@
-import dotenv from "dotenv";
-dotenv.config();
 import express from "express";
-import bodyParser from "body-parser";
 import cors from "cors";
 import { routes } from "./index.route";
-import { connection as databaseConnection } from "./configs/database";
+import { connectDatabase } from "./configs/database";
+import { config } from "./configs/config";
 
 const main = async () => {
   // set up database connection
-  databaseConnection();
+  connectDatabase();
 
   // set up express server
   const app = express();
+
+  // set up middlewares
   app.use(cors());
+  app.use(express.urlencoded({ extended: true }));
   app.use(express.json());
+
+  // set up routes
   app.use(routes);
-  app.use(bodyParser.json());
-  app.use(bodyParser.urlencoded({ extended: false }));
 
   // start server
-  app.listen(process.env.PORT || 4000, () => {
-    console.log(`Server is up and running on port ${process.env.PORT}!`);
+  app.listen(config.port, () => {
+    console.log(`Server is up and running on port ${config.port}!`);
   });
 };