Build auth API

src/Robware.Data/DatabaseUser.cs

@@ -0,0 +1,11 @@
+using Robware.Auth;
+using Robware.Data.States;
+
+namespace Robware.Data {
+	public class DatabaseUser : User {
+		public DatabaseUser(UserState state) {
+			Username = state.User_Email;
+			Password = state.User_Password;
+		}
+	}
+}

src/Robware.Data/IDatabaseProvider.cs

@@ -0,0 +1,7 @@
+using System.Data;
+
+namespace Robware.Data {
+	public interface IDatabaseProvider {
+		IDbConnection NewConnection();
+	}
+}

src/Robware.Data/MySQLDatabaseProvider.cs

@@ -0,0 +1,12 @@
+using System.Data;
+using MySql.Data.MySqlClient;
+
+namespace Robware.Data {
+	public class MySQLDatabaseProvider : IDatabaseProvider {
+		private readonly string _connectionString;
+
+		public MySQLDatabaseProvider(string connectionString) => _connectionString = connectionString;
+
+		public IDbConnection NewConnection() => new MySqlConnection(_connectionString);
+	}
+}

src/Robware.Data/Robware.Data.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Dapper" Version="2.0.35" />
+    <PackageReference Include="MySqlConnector" Version="0.63.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Robware.Auth\Robware.Auth.csproj" />
+  </ItemGroup>
+
+</Project>

src/Robware.Data/States/UserState.cs

@@ -0,0 +1,10 @@
+namespace Robware.Data.States {
+	public class UserState {
+		public string User_Id { get; set; }
+		public string User_Email { get; set; }
+		public string User_Password { get; set; }
+		public string User_Created { get; set; }
+		public string User_Deleted { get; set; }
+		public string Group_Id { get; set; }
+	}
+}

src/Robware.Data/UserRepository.cs

@@ -0,0 +1,29 @@
+using System.Linq;
+using System.Threading.Tasks;
+using Dapper;
+using Robware.Auth;
+using Robware.Data.States;
+
+namespace Robware.Data {
+	public class UserRepository : IUsers {
+		private readonly IDatabaseProvider _dbProvider;
+
+		public UserRepository(IDatabaseProvider dbProvider) {
+			_dbProvider = dbProvider;
+		}
+
+		public async Task<User> GetByEmail(string email) {
+			const string query = "SELECT * FROM users WHERE user_email=@email";
+
+			using (var connection = _dbProvider.NewConnection()) {
+				connection.Open();
+				var result = await connection.QueryAsync<UserState>(query, new { email });
+
+				if (!result.Any())
+					throw new UserNotFoundException(email);
+
+				return new DatabaseUser(result.Single());
+			}
+		}
+	}
+}