* [Fix] Fixing and Maintaining the database structure and exposed api…

…s through the code base

+ [Add] Adding the Repository pattern into the code for switching the databases and better data access flow controls

databases/index.js

@@ -0,0 +1,46 @@
+const redis = require("./redis/index.js");
+const mongodb = require("./mongodb/index.js");
+const postgresql = require("./postgresql/index.js");
+const { database:{config,database} } = require("../config");
+
+// Redis Connection Helpers
+const startRedis = ()=>{
+  redis.connectDatabase(config, console.error.bind(console, "connection error:"), () => {});
+};
+const stopRedis = ()=>{
+  redis.disconnectDatabase();
+};
+
+// Mongo DB Connection Helpers
+const startMongoDB = ()=>{
+  mongodb.connectDatabase(config, console.error.bind(console, "connection error:"), () => {
+    console.log("MongoDB is Connected.");
+  });
+};
+const stopMongoDB = ()=>{
+  mongodb.getConnection().close();
+};
+
+// Redis Connection Helpers
+const startPostgresql = ()=>{
+  postgresql.connectDatabase(config, console.error.bind(console, "connection error:"), () => {});
+  postgresql.connectModels(postgresql.getClient());
+};
+const stopPostgresql = ()=>{
+  postgresql.getClient().close();
+};
+
+module.exports = {
+  database,
+  temporary:{
+    start:startRedis,
+    stop:stopRedis,
+    manager:redis,
+  },
+  persistant:{
+    start:database==="POSTGRESQL"?startPostgresql:startMongoDB,
+    stop:database==="POSTGRESQL"?stopPostgresql:stopMongoDB,
+    models:database==="POSTGRESQL"?postgresql.models:mongodb.models,
+    manager:database==="POSTGRESQL"?postgresql:mongodb,
+  }
+};