-- Migration: Create custom fields tables
-- Description: Enables custom field definitions per category and stores field values

-- Custom field definitions
CREATE TABLE IF NOT EXISTS custom_field_definitions (
    field_id INT AUTO_INCREMENT PRIMARY KEY,
    field_name VARCHAR(100) NOT NULL,
    field_label VARCHAR(255) NOT NULL,
    field_type ENUM('text', 'textarea', 'select', 'checkbox', 'date', 'number') NOT NULL,
    field_options JSON NULL COMMENT 'Options for select fields: {"options": ["Option 1", "Option 2"]}',
    category VARCHAR(50) NULL COMMENT 'NULL = applies to all categories',
    is_required BOOLEAN DEFAULT FALSE,
    display_order INT DEFAULT 0,
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_custom_fields_category (category, is_active),
    INDEX idx_custom_fields_order (display_order)
);

-- Custom field values for tickets
CREATE TABLE IF NOT EXISTS custom_field_values (
    value_id INT AUTO_INCREMENT PRIMARY KEY,
    ticket_id VARCHAR(9) NOT NULL,
    field_id INT NOT NULL,
    field_value TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY unique_ticket_field (ticket_id, field_id),
    FOREIGN KEY (field_id) REFERENCES custom_field_definitions(field_id) ON DELETE CASCADE,
    INDEX idx_custom_values_ticket (ticket_id)
);

-- Sample custom field definitions (commented out)
-- INSERT INTO custom_field_definitions (field_name, field_label, field_type, category, is_required)
-- VALUES
--     ('affected_server', 'Affected Server', 'text', 'Hardware', false),
--     ('incident_date', 'Incident Date', 'date', 'Security', true),
--     ('software_version', 'Software Version', 'text', 'Software', false);