Merge pull request #40 from UoaWDCC/DB_Connection

Set up database connection

api/.env.example

@@ -0,0 +1,15 @@
+# Environment Variables for Database Connection
+
+# Create a '.env' file under the api directory of the project and add the following variable:
+# MONGODB_URI=mongodb+srv://fsae:cD5pAQGsceFvdle7@cluster0.rropzcv.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0
+
+# Original config without using environment variables were:
+# name: mongoDB
+# connector: MongoDB
+# url: mongodb+srv://fsae:cD5pAQGsceFvdle7@cluster0.rropzcv.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0
+# host: cluster0.rropzcv.mongodb.net
+# port: 27017
+# user: fsae
+# password: ''
+# database: ''
+# useNewUrlParser: true

api/package.json

@@ -44,13 +44,15 @@
     "@loopback/authorization": "^0.15.3",
     "@loopback/boot": "^7.0.0",
     "@loopback/core": "^6.0.0",
-    "@loopback/repository": "^7.0.0",
+    "@loopback/repository": "^7.0.4",
     "@loopback/rest": "^14.0.0",
     "@loopback/rest-explorer": "^7.0.0",
     "@loopback/service-proxy": "^7.0.0",
     "@types/jsonwebtoken": "^9.0.6",
     "bcryptjs": "^2.4.3",
+    "dotenv": "^16.4.5",
     "jsonwebtoken": "^9.0.2",
+    "loopback-connector-mongodb": "^6.2.0",
     "tslib": "^2.0.0"
   },
   "devDependencies": {

api/src/datasources/index.ts

@@ -1 +1,2 @@
 export * from './dev-in-mem.datasource';
+export * from './mongo-db.datasource';

api/src/datasources/mongo-db.datasource.ts

@@ -0,0 +1,28 @@
+import {inject, lifeCycleObserver, LifeCycleObserver} from '@loopback/core';
+import {juggler} from '@loopback/repository';
+
+const config = {
+  name: 'mongoDB',
+  connector: 'mongodb',
+  url: process.env.MONGODB_URI, // Using environment variable
+  useNewUrlParser: true
+};
+
+// Observe application's life cycle to disconnect the datasource when
+// application is stopped. This allows the application to be shut down
+// gracefully. The `stop()` method is inherited from `juggler.DataSource`.
+// Learn more at https://loopback.io/doc/en/lb4/Life-cycle.html
+
+@lifeCycleObserver('datasource')
+export class MongoDbDataSource extends juggler.DataSource
+  implements LifeCycleObserver {
+  static dataSourceName = 'mongoDB';
+  static readonly defaultConfig = config;
+
+  constructor(
+    @inject('datasources.config.mongoDB', {optional: true})
+    dsConfig: object = config,
+  ) {
+    super(dsConfig);
+  }
+}

api/src/index.ts

@@ -1,3 +1,6 @@
+import dotenv from 'dotenv';
+dotenv.config(); // Load environment variables from .env file
+
 import {ApplicationConfig, FsaeApiApplication} from './application';
 
 export * from './application';