-- Attendance migration
CREATE TABLE IF NOT EXISTS attendance (
    id INT AUTO_INCREMENT PRIMARY KEY,
    student_id INT NOT NULL,
    class_id INT NOT NULL,
    status ENUM('hadir', 'sakit', 'izin', 'alpa') NOT NULL DEFAULT 'alpa',
    attendance_date DATE NOT NULL,
    recorded_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (student_id) REFERENCES students(id) ON DELETE CASCADE,
    FOREIGN KEY (class_id) REFERENCES classes(id) ON DELETE CASCADE,
    UNIQUE KEY unique_attendance (student_id, attendance_date)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;