-- ============================================
-- MIGRACIÓN 010: notifications, backups
-- ============================================

CREATE TABLE IF NOT EXISTS notifications (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    type ENUM('tarea_proxima', 'tarea_vencida', 'nuevo_lead', 'invitacion', 'actividad') NOT NULL,
    title VARCHAR(200) NOT NULL,
    message TEXT NULL,
    reference_type VARCHAR(100) NULL,
    reference_id INT NULL,
    is_read TINYINT(1) NOT NULL DEFAULT 0,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE INDEX idx_notifications_user ON notifications(user_id, is_read);

CREATE TABLE IF NOT EXISTS backups (
    id INT AUTO_INCREMENT PRIMARY KEY,
    file_name VARCHAR(300) NOT NULL,
    file_path VARCHAR(500) NOT NULL,
    type ENUM('completo', 'parcial') NOT NULL DEFAULT 'completo',
    size_bytes BIGINT NULL,
    created_by INT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE RESTRICT
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;