Added NLog, Added UserService, Added database and seed seed

Birdmap/Middlewares/ExceptionHandlerMiddleware.cs

@@ -0,0 +1,56 @@
+using Birdmap.BLL.Exceptions;
+using Microsoft.AspNetCore.Http;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using System;
+using System.Net;
+using System.Threading.Tasks;
+
+namespace Birdmap.API.Middlewares
+{
+    public class ExceptionHandlerMiddleware
+    {
+        private readonly RequestDelegate _next;
+        private readonly ILogger<ExceptionHandlerMiddleware> _logger;
+
+        public ExceptionHandlerMiddleware(RequestDelegate next, ILogger<ExceptionHandlerMiddleware> logger)
+        {
+            _next = next;
+            _logger = logger;
+        }
+
+        public async Task Invoke(HttpContext context)
+        {
+            try
+            {
+                await _next(context);
+            }
+            catch (Exception ex)
+            {
+                await HandleException(context, ex);
+            }
+        }
+
+        private Task HandleException(HttpContext context, Exception ex)
+        {
+            _logger.LogWarning(ex, "");
+
+            var code = ex switch
+            {
+                AuthenticationException _ => HttpStatusCode.Unauthorized,
+                EntityNotFoundException _ => HttpStatusCode.NotFound,
+                ArgumentException _ => HttpStatusCode.BadRequest,
+                DbUpdateConcurrencyException _ => HttpStatusCode.Conflict,
+                _ => HttpStatusCode.InternalServerError,
+            };
+
+            var result = JsonConvert.SerializeObject(new { error = ex.Message, exception = ex.ToString() });
+
+            context.Response.ContentType = "application/json";
+            context.Response.StatusCode = (int)code;
+
+            return context.Response.WriteAsync(result);
+        }
+    }
+}