Add providers

src/providers/Environment.ts

@@ -0,0 +1,51 @@
+import * as path from "path";
+import * as dotenv from "dotenv";
+
+import Logger from "../libs/Logger";
+
+const requiredENV = [
+    'NODE_ENV',
+];
+
+class Environment {
+
+    public init(): void {
+        dotenv.config({ path: path.resolve(__dirname, "../../.env") });
+
+        for (let param of requiredENV) {
+            if (this.isUndefinedOrEmpty(process.env[param]))
+                throw new Error(`.env ${param} is undefined`);
+        }
+
+        // NODE_ENV Checks
+        if (this.get().NODE_ENV != "production" && this.get().NODE_ENV != "development")
+            throw new Error('.env NODE_ENV must be either "production" or "development"');
+
+        Logger.log('info', `Running in ${process.env.NODE_ENV} environment`);
+    }
+
+    public get(): any {
+
+        const NODE_ENV = process.env.NODE_ENV;
+      
+        return {
+            NODE_ENV
+        };
+    }
+
+    private isUndefinedOrEmpty(value: String | undefined): boolean {
+        if(typeof value === 'undefined')
+            return true;
+
+        if(value === undefined)
+            return true;
+
+        if(value === '')
+            return true;
+
+        return false;
+    }
+
+}
+
+export default new Environment();