initial commit

ConfigBackEnd/Middleware/ExceptionHandlingMiddleware.cs

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+using Indotalent.ConfigBackEnd.Exceptions;
+using Indotalent.Shared.Consts;
+using Indotalent.Shared.Models;
+using System.Net;
+using System.Text.Json;
+
+namespace Indotalent.ConfigBackEnd.Middleware;
+
+public class ExceptionHandlingMiddleware
+{
+    private readonly RequestDelegate _next;
+    private readonly ILogger<ExceptionHandlingMiddleware> _logger;
+
+    public ExceptionHandlingMiddleware(RequestDelegate next, ILogger<ExceptionHandlingMiddleware> logger)
+    {
+        _next = next;
+        _logger = logger;
+    }
+
+    public async Task Invoke(HttpContext context)
+    {
+        try
+        {
+            await _next(context);
+        }
+        catch (Exception ex)
+        {
+            await HandleExceptionAsync(context, ex);
+        }
+    }
+
+    private async Task HandleExceptionAsync(HttpContext context, Exception exception)
+    {
+        var code = HttpStatusCode.InternalServerError;
+        var message = "An unexpected error occurred on the server.";
+        var errors = new List<string>();
+
+        switch (exception)
+        {
+            case ValidationException validationException:
+                code = HttpStatusCode.BadRequest;
+                message = "One or more validation failures have occurred.";
+                foreach (var error in validationException.Errors)
+                {
+                    errors.AddRange(error.Value);
+                }
+                break;
+
+            case NotFoundException notFoundException:
+                code = HttpStatusCode.NotFound;
+                message = notFoundException.Message;
+                errors.Add(notFoundException.Message);
+                break;
+
+            case AlreadyExistsException alreadyExistsException:
+                code = HttpStatusCode.Conflict;
+                message = alreadyExistsException.Message;
+                errors.Add(alreadyExistsException.Message);
+                break;
+
+            case MismatchException mismatchException:
+                code = HttpStatusCode.BadRequest;
+                message = mismatchException.Message;
+                errors.Add(mismatchException.Message);
+                break;
+
+            case ForbiddenAccessException:
+                code = HttpStatusCode.Forbidden;
+                message = "You do not have permission to access this resource.";
+                errors.Add("Access denied to the requested resource.");
+                break;
+
+            case UnauthorizedAccessException:
+                code = HttpStatusCode.Unauthorized;
+                message = "Authentication is required to access this resource.";
+                errors.Add("Session invalid or expired.");
+                break;
+
+            default:
+                if (exception.StackTrace != null && exception.StackTrace.Contains(GlobalConsts.BehaviourError))
+                {
+                    _logger.LogError(exception, GlobalConsts.GlobalError + " {Message} on {Path}",
+                        exception.Message, context.Request.Path);
+                }
+                message = "An unexpected error occurred on the HRM server.";
+                errors.Add(exception.Message);
+                break;
+        }
+
+        context.Response.ContentType = "application/json";
+        context.Response.StatusCode = (int)code;
+
+        var response = new ApiResponse<object>
+        {
+            IsSuccess = false,
+            StatusCode = (int)code,
+            Message = message,
+            Errors = errors,
+            ServerTime = DateTime.UtcNow
+        };
+
+        var jsonOptions = new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase };
+        await context.Response.WriteAsync(JsonSerializer.Serialize(response, jsonOptions));
+    }
+}