Add Face

FaceRecognitionApp/Services/DatabaseService.cs

@@ -0,0 +1,65 @@
+using Microsoft.Data.Sqlite;
+using FaceRecognitionApp.Models;
+
+namespace FaceRecognitionApp.Services;
+
+public class DatabaseService
+{
+    private readonly string _connectionString = "Data Source=faces.db";
+
+    public DatabaseService()
+    {
+        InitializeDatabase();
+    }
+
+    private void InitializeDatabase()
+    {
+        using var connection = new SqliteConnection(_connectionString);
+        connection.Open();
+        var cmd = connection.CreateCommand();
+        cmd.CommandText = @"
+            CREATE TABLE IF NOT EXISTS Employees (
+                Id INTEGER PRIMARY KEY AUTOINCREMENT,
+                Name TEXT NOT NULL,
+                Department TEXT,
+                FaceDescriptor BLOB,
+                Photo BLOB
+            )";
+        cmd.ExecuteNonQuery();
+    }
+
+    public void AddEmployee(string name, string? dept, byte[] descriptor, byte[] photo)
+    {
+        using var connection = new SqliteConnection(_connectionString);
+        connection.Open();
+        var cmd = connection.CreateCommand();
+        cmd.CommandText = "INSERT INTO Employees (Name, Department, FaceDescriptor, Photo) VALUES (@n, @d, @desc, @p)";
+        cmd.Parameters.AddWithValue("@n", name);
+        cmd.Parameters.AddWithValue("@d", (object?)dept ?? DBNull.Value);
+        cmd.Parameters.AddWithValue("@desc", descriptor);
+        cmd.Parameters.AddWithValue("@p", photo);
+        cmd.ExecuteNonQuery();
+    }
+
+    public List<Employee> GetAllEmployees()
+    {
+        var list = new List<Employee>();
+        using var connection = new SqliteConnection(_connectionString);
+        connection.Open();
+        var cmd = connection.CreateCommand();
+        cmd.CommandText = "SELECT * FROM Employees";
+        using var reader = cmd.ExecuteReader();
+        while (reader.Read())
+        {
+            list.Add(new Employee
+            {
+                Id = reader.GetInt32(0),
+                Name = reader.GetString(1),
+                Department = reader.IsDBNull(2) ? null : reader.GetString(2),
+                FaceDescriptor = (byte[])reader[3],
+                Photo = reader.IsDBNull(4) ? null : (byte[])reader[4]
+            });
+        }
+        return list;
+    }
+}