new init api and start auth

uWine.Core.Infrastructure/Repository/MariaDbAuthenticationRepository.cs

@@ -0,0 +1,40 @@
+using Microsoft.Extensions.Configuration;
+using MySqlConnector;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using uWine.Core.Domain.Entities;
+using uWine.Core.Domain.Repositories;
+
+namespace uWine.Core.Infrastructure.Repository
+{
+    public class MariaDbAuthenticationRepository : MariaDbServerRepository, IAuthenticationRepository
+    {
+        public MariaDbAuthenticationRepository(IConfiguration configuration) : base(configuration)
+        {
+        }
+
+        public bool Valid(User user)
+        {
+            if (user == null || string.IsNullOrEmpty(user.Username) || string.IsNullOrEmpty(user.Password)) return false;
+            using (var conn = Connection())
+            {
+                var cmd = new MySqlCommand("sp_check_login", conn);
+                cmd.CommandType = CommandType.StoredProcedure;
+                cmd.Parameters.AddWithValue("@Username", user.Username);
+                cmd.Parameters.AddWithValue("@Password", user.Password);
+                using (var reader = cmd.ExecuteReader())
+                {
+                    if (reader.Read())
+                    {
+                        return reader.GetBoolean("valid");
+                    }
+                }
+            }
+            return false;
+        }
+    }
+}