Implemented error handling for each request.

- implemented error handling for all the API requests.
- In dev and staging environments, if the Json parser throw's exception it will show the Json data, where as in prod it will show error message as  "Not able to process the response at this moment. Please try again later."

Ticket: https://dev.azure.com/TDEI-UW/TDEI/_workitems/edit/2035

Author: srikanth-vg

GoInfoGame/GoInfoGame/Network/ApiManager.swift

@@ -113,8 +113,12 @@ class ApiManager {
                 return
             }
 
-            if let httpResponse = response as? HTTPURLResponse,
-               httpResponse.statusCode == 401,
+            guard let httpResponse = response as? HTTPURLResponse else {
+                completion(.failure(APIError.custom("Invalid response, Please try again later.")))
+                return
+            }
+            
+            if httpResponse.statusCode == 401,
                request.url!.lastPathComponent.contains("refresh-token") == false,
                request.url!.lastPathComponent.contains("authenticate") == false {
                 print("Failed requests: \(String(describing: request.url))")
@@ -142,6 +146,17 @@ class ApiManager {
                 return
             }
 
+            switch httpResponse.statusCode {
+            case 400...499:
+                completion(.failure(APIError.custom("Client Error. Please try again later.")))
+                return
+            case 500...599:
+                completion(.failure(APIError.custom("Internal server error. Please try again later.")))
+                return
+            default:
+                print("Request processed successfully.")
+            }
+            
             guard let data = data else {
                 completion(.failure(APIError.custom("No data returned")))
                 return
@@ -167,11 +182,15 @@ class ApiManager {
                 } catch {
                     print("Failed to decode data: \(error.localizedDescription)")
                     if let dataString = String(data: data, encoding: .utf8), !dataString.isEmpty {
-                        completion(.failure(APIError.custom("Not a valid JSON \(dataString)")))
+                        if APIConfiguration.shared.environment == .development ||
+                            APIConfiguration.shared.environment == .staging {
+                            completion(.failure(APIError.custom("Not a valid JSON \(dataString)")))
+                        } else {
+                            completion(.failure(APIError.custom("Not able to process the response at this moment. Please try again later.")))
+                        }
                     } else {
                         completion(.failure(APIError.custom("Empty JSON")))
                     }
-                    
                     return
                 }
             }