-- Migration: Create recurring tickets table
-- Description: Enables automatic ticket creation on a schedule

CREATE TABLE IF NOT EXISTS recurring_tickets (
    recurring_id INT AUTO_INCREMENT PRIMARY KEY,
    title_template VARCHAR(255) NOT NULL,
    description_template TEXT,
    category VARCHAR(50) DEFAULT 'General',
    type VARCHAR(50) DEFAULT 'Task',
    priority INT DEFAULT 4,
    assigned_to INT NULL,
    schedule_type ENUM('daily', 'weekly', 'monthly') NOT NULL,
    schedule_day INT NULL COMMENT 'Day of week (1-7) for weekly, day of month (1-31) for monthly',
    schedule_time TIME DEFAULT '09:00:00',
    next_run_at TIMESTAMP NOT NULL,
    last_run_at TIMESTAMP NULL,
    is_active BOOLEAN DEFAULT TRUE,
    created_by INT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (assigned_to) REFERENCES users(user_id) ON DELETE SET NULL,
    FOREIGN KEY (created_by) REFERENCES users(user_id) ON DELETE SET NULL,
    INDEX idx_recurring_next_run (next_run_at, is_active),
    INDEX idx_recurring_active (is_active)
);

-- Sample recurring ticket for testing (commented out)
-- INSERT INTO recurring_tickets (title_template, description_template, category, type, schedule_type, schedule_day, next_run_at)
-- VALUES ('Weekly Server Maintenance Check', 'Perform weekly server health check and maintenance tasks.', 'Maintenance', 'Task', 'weekly', 1, NOW());