Data/SqliteClientRepository.cs

@@ -20,23 +20,86 @@ namespace Workshop8.Data
 
         public async Task<IEnumerable<Cliente>> GetAllClientsAsync()
         {
-            // TODO: implementar SELECT
-            return new List<Cliente>();
+            var clientes = new List<Cliente>();
+
+            await using (var connection = new SqliteConnection(_connectionString))
+            {
+                await connection.OpenAsync();
+                await using (var cmd = connection.CreateCommand())
+                {
+                    cmd.CommandText = @"SELECT Id, Nome, Email, CriadoEm
+                                        FROM Clientes
+                                        ORDER BY Id;";
+                    await using (var reader = await cmd.ExecuteReaderAsync())
+                    {
+                        while (await reader.ReadAsync())
+                        {
+                            clientes.Add(new Cliente
+                            {
+                                Id = reader.GetInt32(0),
+                                Nome = reader.GetString(1),
+                                Email = reader.GetString(2),
+                                CriadoEm = reader.GetDateTime(3)
+                            });
+                        }
+                    }
+                }
+                connection.Close();
+                connection.Dispose();
+            }
+            return clientes;
         }
 
         public async Task AddClientAsync(Cliente c)
         {
-            // TODO: implementar INSERT
+            await using (var connection = new SqliteConnection(_connectionString))
+            {
+                await connection.OpenAsync();
+                await using (var cmd = connection.CreateCommand())
+                {
+                    cmd.CommandText = @"
+                        INSERT INTO Clientes (Nome, Email, CriadoEm)
+                        VALUES (@nome, @email, @criado);";
+                    cmd.Parameters.AddWithValue("@nome", c.Nome);
+                    cmd.Parameters.AddWithValue("@email", c.Email);
+                    cmd.Parameters.AddWithValue("@criado", c.CriadoEm);
+                    await cmd.ExecuteNonQueryAsync();
+                }
+            }
         }
 
         public async Task UpdateClientAsync(Cliente c)
         {
-            // TODO: implementar UPDATE
+            await using (var connection = new SqliteConnection(_connectionString))
+            {
+                await connection.OpenAsync();
+                await using (var cmd = connection.CreateCommand())
+                {
+                    cmd.CommandText = @"
+                        UPDATE Clientes
+                        SET Nome = @nome,
+                            Email = @email
+                        WHERE Id = @id;";
+                    cmd.Parameters.AddWithValue("@nome",  c.Nome);
+                    cmd.Parameters.AddWithValue("@email", c.Email);
+                    cmd.Parameters.AddWithValue("@id",    c.Id);
+                    await cmd.ExecuteNonQueryAsync();
+                }
+            }
         }
 
         public async Task DeleteClientAsync(int id)
         {
-            // TODO: implementar DELETE
+             await using (var connection = new SqliteConnection(_connectionString))
+            {
+                await connection.OpenAsync();
+                await using (var cmd = connection.CreateCommand())
+                {
+                    cmd.CommandText = @"DELETE FROM Clientes WHERE Id = @id;";
+                    cmd.Parameters.AddWithValue("@id", id);
+                    await cmd.ExecuteNonQueryAsync();
+                }
+            }
         }
     }
 }

Pages/Index.cshtml

@@ -3,8 +3,9 @@
 @{
     ViewData["Title"] = "Clientes";
 }
+
 <div class="d-flex justify-content-between align-items-center my-3">
-  <h2>Clientes</h2>
+  <h3>Clientes</h3>
   <button class="btn btn-primary" type="button" id="createClientBtn">Adicionar Cliente</button>
 </div>
 <table class="table table-striped">