Modify settingsService to load from env by default

Server/service/settingsService.js

@@ -1,24 +1,52 @@
 const AppSettings = require("../models/AppSettings");
 const SERVICE_NAME = "SettingsService";
 
+CLIENT_HOST = process.env.CLIENT_HOST;
+JWT_SECRET = process.env.JWT_SECRET;
+DB_TYPE = process.env.DB_TYPE;
+DB_CONNECTION_STRING = process.env.DB_CONNECTION_STRING;
+REDIS_HOST = process.env.REDIS_HOST;
+REDIS_PORT = process.env.REDIS_PORT;
+TOKEN_TTL = process.env.TOKEN_TTL;
+PAGESPEED_API_KEY = process.env.PAGESPEED_API_KEY;
+SYSTEM_EMAIL_HOST = process.env.SYSTEM_EMAIL_HOST;
+SYSTEM_EMAIL_PORT = process.env.SYSTEM_EMAIL_PORT;
+SYSTEM_EMAIL_ADDRESS = process.env.SYSTEM_EMAIL_ADDRESS;
+SYSTEM_EMAIL_PASSWORD = process.env.SYSTEM_EMAIL_PASSWORD;
 class SettingsService {
   constructor() {
-    this.settings = null;
+    this.settings = {
+      clientHost: CLIENT_HOST,
+      jwtSecret: JWT_SECRET,
+      dbType: DB_TYPE,
+      dbConnectionString: DB_CONNECTION_STRING,
+      redisHost: REDIS_HOST,
+      redisPort: REDIS_PORT,
+      tokenTTL: TOKEN_TTL,
+      pagespeedApiKey: PAGESPEED_API_KEY,
+      systemEmailHost: SYSTEM_EMAIL_HOST,
+      systemEmailPort: SYSTEM_EMAIL_PORT,
+      systemEmailAddress: SYSTEM_EMAIL_ADDRESS,
+      systemEmailPassword: SYSTEM_EMAIL_PASSWORD,
+    };
   }
 
   async loadSettings() {
-    if (!this.settings) {
-      try {
-        this.settings = await AppSettings.findOne();
-        if (!this.settings) {
-          throw new Error("Settings not found");
-        }
-        return this.settings;
-      } catch (error) {
-        error.service === undefined ? (error.service = SERVICE_NAME) : null;
-        error.method === undefined ? (error.method = "loadSettings") : null;
-        throw error;
+    try {
+      const dbSettings = await AppSettings.findOne();
+      if (!this.settings) {
+        throw new Error("Settings not found");
       }
+      for (const key in this.settings) {
+        if (this.settings[key] === undefined && dbSettings[key] !== undefined) {
+          this.settings[key] = dbSettings[key];
+        }
+      }
+      return this.settings;
+    } catch (error) {
+      error.service === undefined ? (error.service = SERVICE_NAME) : null;
+      error.method === undefined ? (error.method = "loadSettings") : null;
+      throw error;
     }
   }