<?php

declare(strict_types=1);

/**
 * HVAC TEC Tickets Integration
 *
 * Handles integration between HVAC plugin and The Events Calendar ticketing system
 * Provides ticket creation, pricing, and attendee information collection
 *
 * @package    HVAC_Community_Events
 * @subpackage Includes
 * @since      3.2.0 (Phase 2B TEC Ticketing Integration)
 */

if (!defined('ABSPATH')) {
    exit;
}

/**
 * Class HVAC_TEC_Tickets
 *
 * TEC ticketing integration for HVAC events with mandatory attendee collection
 */
class HVAC_TEC_Tickets {

    /**
     * Singleton instance
     *
     * @var HVAC_TEC_Tickets|null
     */
    private static ?HVAC_TEC_Tickets $instance = null;

    /**
     * TEC ticket fieldset ID for mandatory fields
     *
     * @var int
     */
    private int $default_fieldset_id = 6235;

    /**
     * Mandatory attendee fields
     *
     * @var array
     */
    private array $mandatory_fields = [
        'first_name' => [
            'type' => 'text',
            'label' => 'First Name',
            'required' => true,
            'sanitize' => 'text'
        ],
        'last_name' => [
            'type' => 'text',
            'label' => 'Last Name',
            'required' => true,
            'sanitize' => 'text'
        ]
    ];

    /**
     * Get singleton instance
     *
     * @return HVAC_TEC_Tickets
     */
    public static function instance(): HVAC_TEC_Tickets {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    /**
     * Constructor
     */
    private function __construct() {
        $this->init_hooks();
    }

    /**
     * Initialize hooks
     */
    private function init_hooks(): void {
        // Hook into TEC event creation
        add_action('tribe_events_event_save', [$this, 'handle_event_save'], 10, 2);

        // Add ticket management to HVAC forms
        add_action('hvac_event_form_after_basic_fields', [$this, 'add_ticket_fields']);

        // Handle ticket creation AJAX
        add_action('wp_ajax_hvac_create_event_tickets', [$this, 'ajax_create_event_tickets']);
        add_action('wp_ajax_hvac_update_event_tickets', [$this, 'ajax_update_event_tickets']);

        // Add mandatory attendee fields to ticket forms
        add_filter('tribe_tickets_attendee_registration_form_fields', [$this, 'add_mandatory_attendee_fields'], 10, 2);

        // Validate mandatory fields on ticket purchase
        add_action('tribe_tickets_before_save_attendee_data', [$this, 'validate_mandatory_attendee_data'], 10, 3);

        // Enqueue ticketing assets
        add_action('wp_enqueue_scripts', [$this, 'enqueue_ticketing_assets']);
    }

    /**
     * Handle event save and create associated tickets
     *
     * @param int $event_id Event ID
     * @param array $data Event data
     */
    public function handle_event_save(int $event_id, array $data): void {
        // Only process HVAC-created events
        if (!get_post_meta($event_id, '_hvac_event', true)) {
            return;
        }

        $ticket_data = get_post_meta($event_id, '_hvac_ticket_data', true);
        if (!empty($ticket_data)) {
            $this->create_tickets_for_event($event_id, $ticket_data);
        }
    }

    /**
     * Create tickets for an event
     *
     * @param int $event_id Event ID
     * @param array $tickets_data Tickets configuration
     * @return array Result with success status
     */
    public function create_tickets_for_event(int $event_id, array $tickets_data): array {
        $results = [];

        foreach ($tickets_data as $ticket_config) {
            $ticket_id = $this->create_tec_ticket($event_id, $ticket_config);

            if ($ticket_id) {
                // Add mandatory fieldset requirements
                $this->add_fieldset_requirements($ticket_id, $this->default_fieldset_id);
                $results[] = ['success' => true, 'ticket_id' => $ticket_id];
            } else {
                $results[] = ['success' => false, 'error' => 'Failed to create ticket'];
            }
        }

        return [
            'success' => count(array_filter($results, fn($r) => $r['success'])) > 0,
            'tickets' => $results
        ];
    }

    /**
     * Create a TEC ticket
     *
     * @param int $event_id Event ID
     * @param array $ticket_config Ticket configuration
     * @return int|false Ticket ID or false on failure
     */
    private function create_tec_ticket(int $event_id, array $ticket_config) {
        // Validate TEC is available
        if (!class_exists('Tribe__Tickets__Tickets')) {
            error_log('HVAC TEC Tickets: TEC Tickets plugin not available');
            return false;
        }

        $ticket_data = [
            'ticket_name' => sanitize_text_field($ticket_config['name'] ?? 'Event Ticket'),
            'ticket_description' => wp_kses_post($ticket_config['description'] ?? ''),
            'ticket_price' => floatval($ticket_config['price'] ?? 0),
            'ticket_start_date' => sanitize_text_field($ticket_config['start_date'] ?? ''),
            'ticket_end_date' => sanitize_text_field($ticket_config['end_date'] ?? ''),
            'ticket_stock' => intval($ticket_config['capacity'] ?? -1), // -1 = unlimited
            'ticket_sku' => '', // Trainers don't set SKUs per requirements
        ];

        // Create ticket using TEC API
        try {
            $ticket_handler = tribe('tickets.handler');
            $ticket_id = $ticket_handler->create_ticket($event_id, $ticket_data);

            if ($ticket_id) {
                // Add HVAC-specific metadata
                update_post_meta($ticket_id, '_hvac_ticket', true);
                update_post_meta($ticket_id, '_hvac_ticket_config', $ticket_config);

                return $ticket_id;
            }
        } catch (Exception $e) {
            error_log('HVAC TEC Tickets: Error creating ticket - ' . $e->getMessage());
        }

        return false;
    }

    /**
     * Add fieldset requirements to ticket
     *
     * @param int $ticket_id Ticket ID
     * @param int $fieldset_id Fieldset ID
     */
    private function add_fieldset_requirements(int $ticket_id, int $fieldset_id): void {
        $fieldset_fields = $this->get_tec_fieldset_fields($fieldset_id);

        if (!empty($fieldset_fields)) {
            update_post_meta($ticket_id, '_tribe_tickets_attendee_info_fieldset', $fieldset_id);

            // Ensure mandatory fields are included
            $all_fields = array_merge($this->mandatory_fields, $fieldset_fields);
            update_post_meta($ticket_id, '_hvac_ticket_mandatory_fields', $all_fields);
        }
    }

    /**
     * Get TEC fieldset fields
     *
     * @param int $fieldset_id Fieldset ID
     * @return array Fieldset fields
     */
    private function get_tec_fieldset_fields(int $fieldset_id): array {
        // Check if fieldset exists
        $fieldset_post = get_post($fieldset_id);
        if (!$fieldset_post || $fieldset_post->post_type !== 'tribe_rsvp_tickets_ticket_fieldset') {
            // Return basic fields if fieldset not found
            return [
                'email' => [
                    'type' => 'email',
                    'label' => 'Email Address',
                    'required' => true,
                    'sanitize' => 'email'
                ],
                'phone' => [
                    'type' => 'tel',
                    'label' => 'Phone Number',
                    'required' => false,
                    'sanitize' => 'text'
                ]
            ];
        }

        // Parse fieldset structure - this would need to be adapted based on TEC's actual fieldset format
        $fieldset_meta = get_post_meta($fieldset_id, '_tribe_tickets_fieldset_fields', true);

        if (is_array($fieldset_meta)) {
            return $this->parse_fieldset_structure($fieldset_meta);
        }

        return [];
    }

    /**
     * Parse fieldset structure into standardized format
     *
     * @param array $fieldset_data Raw fieldset data
     * @return array Parsed fields
     */
    private function parse_fieldset_structure(array $fieldset_data): array {
        $parsed_fields = [];

        foreach ($fieldset_data as $field) {
            if (!isset($field['slug']) || !isset($field['type'])) {
                continue;
            }

            $parsed_fields[$field['slug']] = [
                'type' => $this->normalize_field_type($field['type']),
                'label' => $field['label'] ?? ucfirst(str_replace('_', ' ', $field['slug'])),
                'required' => !empty($field['required']),
                'sanitize' => $this->get_sanitization_method($field['type']),
                'options' => $field['options'] ?? null
            ];
        }

        return $parsed_fields;
    }

    /**
     * Normalize field type for consistency
     *
     * @param string $field_type Original field type
     * @return string Normalized field type
     */
    private function normalize_field_type(string $field_type): string {
        $type_map = [
            'text' => 'text',
            'textarea' => 'textarea',
            'email' => 'email',
            'select' => 'select',
            'radio' => 'radio',
            'checkbox' => 'checkbox',
            'url' => 'url',
            'tel' => 'tel',
            'number' => 'number',
            'date' => 'date'
        ];

        return $type_map[$field_type] ?? 'text';
    }

    /**
     * Get sanitization method for field type
     *
     * @param string $field_type Field type
     * @return string Sanitization method
     */
    private function get_sanitization_method(string $field_type): string {
        $sanitization_map = [
            'text' => 'text',
            'textarea' => 'textarea',
            'email' => 'email',
            'url' => 'url',
            'tel' => 'text',
            'number' => 'int'
        ];

        return $sanitization_map[$field_type] ?? 'text';
    }

    /**
     * Add ticket fields to HVAC event forms
     *
     * @param object $form_builder Form builder instance
     */
    public function add_ticket_fields($form_builder): void {
        if (!method_exists($form_builder, 'add_field')) {
            return;
        }

        // Virtual Event Section
        $form_builder->add_field([
            'type' => 'custom',
            'name' => 'virtual_event_section',
            'custom_html' => '<div class="form-section virtual-event-section">
                <h3 class="form-section-title">Event Type</h3>
                <div class="toggle-field-wrapper">
                    <label class="toggle-switch">
                        <input type="checkbox" name="enable_virtual_event" id="enable_virtual_event" onchange="hvacToggleVirtualEventFields(this.checked)">
                        <span class="toggle-slider"></span>
                    </label>
                    <div class="toggle-label">
                        <strong>Virtual Event</strong>
                        <p class="toggle-description">Enable virtual event capabilities with online meeting integration</p>
                    </div>
                </div>
                <div id="virtual-config-section" class="virtual-config-section" style="display: none;">
                    <div class="form-row virtual-config-field">
                        <label for="virtual_meeting_url">Meeting URL</label>
                        <input type="text" name="virtual_meeting_url" id="virtual_meeting_url" placeholder="https://zoom.us/j/1234567890" />
                        <p class="description">Link to virtual meeting platform (Zoom, Teams, etc.)</p>
                    </div>
                    <div class="form-row virtual-config-field">
                        <label for="virtual_meeting_id">Meeting ID</label>
                        <input type="text" name="virtual_meeting_id" id="virtual_meeting_id" placeholder="123 456 7890" />
                        <p class="description">Meeting ID for attendees (optional)</p>
                    </div>
                    <div class="form-row virtual-config-field">
                        <label for="virtual_meeting_password">Meeting Password</label>
                        <input type="text" name="virtual_meeting_password" id="virtual_meeting_password" placeholder="Optional meeting password" />
                    </div>
                </div>
            </div>',
            'wrapper_class' => 'form-section virtual-event-wrapper'
        ]);

        // Ticketing Management Section - Dynamic subforms
        $form_builder->add_field([
            'type' => 'custom',
            'name' => 'ticketing_management_section',
            'custom_html' => $this->render_ticketing_management_section(),
            'wrapper_class' => 'form-section ticketing-management-wrapper'
        ]);
    }

    /**
     * Render the ticketing management section with dynamic subforms
     *
     * @return string HTML for the ticketing management interface
     */
    private function render_ticketing_management_section(): string {
        ob_start();
        ?>
        <div class="form-section ticket-section">
            <h3 class="form-section-title">Event Registration</h3>

            <!-- Registration Toggle -->
            <div class="toggle-field-wrapper">
                <label class="toggle-switch">
                    <input type="checkbox" name="enable_registration" id="enable_registration" onchange="hvacToggleRegistrationSection(this.checked)">
                    <span class="toggle-slider"></span>
                </label>
                <div class="toggle-label">
                    <strong>Enable Registration</strong>
                    <p class="toggle-description">Allow attendees to register for this event (paid tickets or free RSVP)</p>
                </div>
            </div>

            <!-- Registration Configuration Section -->
            <div id="registration-section" class="registration-section" style="display: none;">

                <!-- Registration Type Selection -->
                <div class="registration-type-selection">
                    <h4>Registration Options</h4>
                    <p class="description">Choose how attendees can register for your event</p>

                    <!-- Ticketing Toggle -->
                    <div class="toggle-field-wrapper">
                        <label class="toggle-switch">
                            <input type="checkbox" name="enable_ticketing" id="enable_ticketing" onchange="hvacToggleTicketingSection(this.checked)">
                            <span class="toggle-slider"></span>
                        </label>
                        <div class="toggle-label">
                            <strong>Paid Tickets</strong>
                            <p class="toggle-description">Create paid tickets with pricing and capacity management</p>
                        </div>
                    </div>
                </div>

            <!-- Dynamic Ticketing Section -->
            <div id="ticketing-section" class="ticketing-section" style="display: none;">

                <!-- Tickets Container -->
                <div class="tickets-container">
                    <div class="tickets-header">
                        <h4>Event Tickets</h4>
                        <button type="button" class="button button-secondary add-ticket-btn" onclick="hvacAddTicket()">
                            <span class="dashicons dashicons-plus-alt"></span> Add Ticket
                        </button>
                    </div>

                    <!-- Tickets List (will be populated dynamically) -->
                    <div id="tickets-list" class="tickets-list">
                        <!-- Ticket subforms will be added here dynamically -->
                    </div>
                </div>

                </div>

                <!-- RSVP Section -->
                <div class="rsvp-container">
                    <div class="toggle-field-wrapper">
                        <label class="toggle-switch">
                            <input type="checkbox" name="enable_rsvp" id="enable_rsvp" onchange="hvacToggleRSVPSection(this.checked)">
                            <span class="toggle-slider"></span>
                        </label>
                        <div class="toggle-label">
                            <strong>Free RSVP</strong>
                            <p class="toggle-description">Allow free RSVP registrations (no payment required)</p>
                        </div>
                    </div>

                    <!-- RSVP Configuration -->
                    <div id="rsvp-config" class="rsvp-config" style="display: none;">
                        <div class="form-row">
                            <label for="rsvp_capacity">RSVP Capacity</label>
                            <input type="number" name="rsvp_capacity" id="rsvp_capacity" placeholder="100" min="1" />
                            <p class="description">Maximum number of free RSVP spots</p>
                        </div>
                    </div>
                </div>

                <!-- Attendee Fields Management -->
                <div class="attendee-fields-container" style="margin-top: 30px;">
                    <h4>Attendee Information Collection</h4>
                    <p class="description">Configure what information to collect from ticket purchasers</p>

                    <div class="attendee-fields-config">
                        <div class="mandatory-fields">
                            <h5>Mandatory Fields</h5>
                            <ul>
                                <li>✓ First Name</li>
                                <li>✓ Last Name</li>
                                <li>✓ Email Address</li>
                            </ul>
                        </div>

                        <div class="optional-fields">
                            <h5>Optional Fields</h5>
                            <label class="field-checkbox">
                                <input type="checkbox" name="collect_phone" value="1" />
                                Phone Number
                            </label>
                            <label class="field-checkbox">
                                <input type="checkbox" name="collect_company" value="1" />
                                Company/Organization
                            </label>
                            <label class="field-checkbox">
                                <input type="checkbox" name="collect_dietary" value="1" />
                                Dietary Restrictions
                            </label>
                            <label class="field-checkbox">
                                <input type="checkbox" name="collect_special_needs" value="1" />
                                Special Needs/Accommodations
                            </label>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Ticket Template (hidden, used for cloning) -->
        <script type="text/html" id="ticket-template">
            <div class="ticket-subform" data-ticket-index="{{index}}">
                <div class="ticket-header">
                    <h5>Ticket {{index}}</h5>
                    <button type="button" class="button button-link-delete remove-ticket-btn" onclick="hvacRemoveTicket({{index}})">
                        Remove
                    </button>
                </div>

                <div class="ticket-fields">
                    <div class="form-row">
                        <label for="ticket_name_{{index}}">Ticket Name</label>
                        <input type="text" name="tickets[{{index}}][name]" id="ticket_name_{{index}}" placeholder="e.g., General Admission, Early Bird" />
                    </div>

                    <div class="form-row-group">
                        <div class="form-row-half">
                            <label for="ticket_price_{{index}}">Price ($)</label>
                            <input type="number" name="tickets[{{index}}][price]" id="ticket_price_{{index}}" step="0.01" min="0" placeholder="0.00" />
                        </div>
                        <div class="form-row-half">
                            <label for="ticket_capacity_{{index}}">Capacity</label>
                            <input type="number" name="tickets[{{index}}][capacity]" id="ticket_capacity_{{index}}" min="1" placeholder="50" />
                        </div>
                    </div>

                    <div class="form-row">
                        <label for="ticket_description_{{index}}">Description (Optional)</label>
                        <textarea name="tickets[{{index}}][description]" id="ticket_description_{{index}}" rows="2" placeholder="Brief description of this ticket type"></textarea>
                    </div>

                    <div class="advanced-ticket-options">
                        <details>
                            <summary>Advanced Options</summary>

                            <div class="form-row-group">
                                <div class="form-row-half">
                                    <label for="ticket_start_sale_{{index}}">Sales Start</label>
                                    <input type="datetime-local" name="tickets[{{index}}][start_sale]" id="ticket_start_sale_{{index}}" />
                                </div>
                                <div class="form-row-half">
                                    <label for="ticket_end_sale_{{index}}">Sales End</label>
                                    <input type="datetime-local" name="tickets[{{index}}][end_sale]" id="ticket_end_sale_{{index}}" />
                                </div>
                            </div>
                        </details>
                    </div>
                </div>
            </div>
        </script>

        <style>
        .registration-section {
            border: 1px solid #e0e0e0;
            padding: 20px;
            margin-top: 20px;
            background: #f8f8f8;
            border-radius: 4px;
        }

        .registration-type-selection {
            background: white;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            margin-bottom: 20px;
        }

        .rsvp-container {
            background: white;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            margin-top: 15px;
        }

        .tickets-container {
            border: 1px solid #ddd;
            padding: 20px;
            margin-top: 20px;
            background: #f9f9f9;
        }

        .tickets-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .ticket-subform {
            background: white;
            border: 1px solid #ddd;
            padding: 15px;
            margin-bottom: 15px;
            border-radius: 4px;
        }

        .ticket-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            border-bottom: 1px solid #eee;
            padding-bottom: 10px;
        }

        .form-row-group {
            display: flex;
            gap: 15px;
        }

        .form-row-half {
            flex: 1;
        }

        .attendee-fields-config {
            display: flex;
            gap: 30px;
            margin-top: 15px;
        }

        .field-checkbox {
            display: block;
            margin-bottom: 8px;
        }

        .advanced-ticket-options {
            margin-top: 15px;
        }

        .advanced-ticket-options summary {
            cursor: pointer;
            font-weight: 600;
            margin-bottom: 15px;
        }
        </style>

        <script>
        let ticketCounter = 0;

        function hvacToggleRegistrationSection(enabled) {
            const section = document.getElementById('registration-section');
            section.style.display = enabled ? 'block' : 'none';

            if (!enabled) {
                // Reset all subsections when registration is disabled
                document.getElementById('enable_ticketing').checked = false;
                document.getElementById('enable_rsvp').checked = false;
                hvacToggleTicketingSection(false);
                hvacToggleRSVPSection(false);
            }
        }

        function hvacToggleTicketingSection(enabled) {
            const section = document.getElementById('ticketing-section');
            section.style.display = enabled ? 'block' : 'none';

            if (enabled && ticketCounter === 0) {
                // Add first ticket by default
                hvacAddTicket();
            }
        }

        function hvacToggleRSVPSection(enabled) {
            const section = document.getElementById('rsvp-config');
            section.style.display = enabled ? 'block' : 'none';
        }

        function hvacAddTicket() {
            ticketCounter++;
            const template = document.getElementById('ticket-template').innerHTML;
            const ticketHtml = template.replace(/\{\{index\}\}/g, ticketCounter);

            const ticketsList = document.getElementById('tickets-list');
            ticketsList.insertAdjacentHTML('beforeend', ticketHtml);
        }

        function hvacRemoveTicket(index) {
            const ticket = document.querySelector(`[data-ticket-index="${index}"]`);
            if (ticket) {
                ticket.remove();
            }
        }

        function hvacToggleVirtualEventFields(enabled) {
            const section = document.getElementById('virtual-config-section');
            section.style.display = enabled ? 'block' : 'none';
        }
        </script>
        <?php
        return ob_get_clean();
    }

    /**
     * Add mandatory attendee fields to ticket forms
     *
     * @param array $fields Existing fields
     * @param int $ticket_id Ticket ID
     * @return array Modified fields
     */
    public function add_mandatory_attendee_fields(array $fields, int $ticket_id): array {
        // Only add to HVAC tickets
        if (!get_post_meta($ticket_id, '_hvac_ticket', true)) {
            return $fields;
        }

        // Get mandatory fields for this ticket
        $mandatory_fields = get_post_meta($ticket_id, '_hvac_ticket_mandatory_fields', true);
        if (empty($mandatory_fields)) {
            $mandatory_fields = $this->mandatory_fields;
        }

        // Merge mandatory fields with existing fields
        return array_merge($mandatory_fields, $fields);
    }

    /**
     * Validate mandatory attendee data
     *
     * @param int $attendee_id Attendee ID
     * @param array $attendee_data Attendee data
     * @param int $ticket_id Ticket ID
     */
    public function validate_mandatory_attendee_data(int $attendee_id, array $attendee_data, int $ticket_id): void {
        // Only validate HVAC tickets
        if (!get_post_meta($ticket_id, '_hvac_ticket', true)) {
            return;
        }

        $mandatory_fields = get_post_meta($ticket_id, '_hvac_ticket_mandatory_fields', true);
        if (empty($mandatory_fields)) {
            $mandatory_fields = $this->mandatory_fields;
        }

        $errors = [];

        foreach ($mandatory_fields as $field_name => $field_config) {
            if (!empty($field_config['required'])) {
                $value = $attendee_data[$field_name] ?? '';

                if (empty(trim($value))) {
                    $errors[] = sprintf('Field "%s" is required', $field_config['label']);
                }
            }
        }

        if (!empty($errors)) {
            wp_die(
                'Please complete all required fields: ' . implode(', ', $errors),
                'Required Fields Missing',
                ['response' => 400, 'back_link' => true]
            );
        }
    }

    /**
     * AJAX handler for creating event tickets
     */
    public function ajax_create_event_tickets(): void {
        // Security check
        if (!wp_verify_nonce($_POST['nonce'] ?? '', 'hvac_ticket_nonce')) {
            wp_send_json_error(['message' => __('Security check failed', 'hvac-community-events')]);
            return;
        }

        $event_id = intval($_POST['event_id'] ?? 0);
        $ticket_data = $_POST['ticket_data'] ?? [];

        if (!$event_id || empty($ticket_data)) {
            wp_send_json_error(['message' => __('Missing required data', 'hvac-community-events')]);
            return;
        }

        $result = $this->create_tickets_for_event($event_id, $ticket_data);

        if ($result['success']) {
            wp_send_json_success($result);
        } else {
            wp_send_json_error($result);
        }
    }

    /**
     * AJAX handler for updating event tickets
     */
    public function ajax_update_event_tickets(): void {
        // Security check
        if (!wp_verify_nonce($_POST['nonce'] ?? '', 'hvac_ticket_nonce')) {
            wp_send_json_error(['message' => __('Security check failed', 'hvac-community-events')]);
            return;
        }

        $ticket_id = intval($_POST['ticket_id'] ?? 0);
        $ticket_data = $_POST['ticket_data'] ?? [];

        if (!$ticket_id || empty($ticket_data)) {
            wp_send_json_error(['message' => __('Missing required data', 'hvac-community-events')]);
            return;
        }

        // Update ticket - implementation would depend on TEC's update API
        $success = $this->update_tec_ticket($ticket_id, $ticket_data);

        if ($success) {
            wp_send_json_success(['message' => __('Ticket updated successfully', 'hvac-community-events')]);
        } else {
            wp_send_json_error(['message' => __('Failed to update ticket', 'hvac-community-events')]);
        }
    }

    /**
     * Update a TEC ticket
     *
     * @param int $ticket_id Ticket ID
     * @param array $ticket_data Updated ticket data
     * @return bool Success status
     */
    private function update_tec_ticket(int $ticket_id, array $ticket_data): bool {
        // Implementation would depend on TEC's update API
        // For now, update basic post data

        $update_data = [
            'ID' => $ticket_id,
            'post_title' => sanitize_text_field($ticket_data['name'] ?? ''),
            'post_content' => wp_kses_post($ticket_data['description'] ?? '')
        ];

        $result = wp_update_post($update_data);

        if (!is_wp_error($result)) {
            // Update ticket meta
            if (isset($ticket_data['price'])) {
                update_post_meta($ticket_id, '_price', floatval($ticket_data['price']));
            }
            if (isset($ticket_data['capacity'])) {
                update_post_meta($ticket_id, '_stock', intval($ticket_data['capacity']));
            }

            return true;
        }

        return false;
    }

    /**
     * Enqueue ticketing assets
     */
    public function enqueue_ticketing_assets(): void {
        // Only enqueue on event creation/edit pages
        if (!$this->is_hvac_event_page()) {
            return;
        }

        // Enqueue DOMPurify for XSS protection
        wp_enqueue_script(
            'dompurify',
            HVAC_PLUGIN_URL . 'assets/js/purify.min.js',
            [],
            HVAC_VERSION,
            true
        );

        wp_enqueue_script(
            'hvac-tec-tickets',
            HVAC_PLUGIN_URL . 'assets/js/hvac-tec-tickets.js',
            ['jquery', 'dompurify'],
            HVAC_VERSION,
            true
        );

        wp_localize_script('hvac-tec-tickets', 'hvacTecTickets', [
            'ajaxurl' => admin_url('admin-ajax.php'),
            'nonce' => wp_create_nonce('hvac_ticket_nonce'),
            'strings' => [
                'ticketCreated' => __('Ticket created successfully', 'hvac-community-events'),
                'ticketUpdated' => __('Ticket updated successfully', 'hvac-community-events'),
                'error' => __('An error occurred. Please try again.', 'hvac-community-events'),
                'confirmRemove' => __('Are you sure you want to remove this ticket?', 'hvac-community-events')
            ]
        ]);

        wp_enqueue_style(
            'hvac-tec-tickets',
            HVAC_PLUGIN_URL . 'assets/css/hvac-tec-tickets.css',
            [],
            HVAC_VERSION
        );

        // Add inline CSS for UI/UX enhancements
        wp_add_inline_style('hvac-tec-tickets', $this->get_enhanced_ui_css());
    }

    /**
     * Check if current page is an HVAC event page
     *
     * @return bool
     */
    private function is_hvac_event_page(): bool {
        global $wp;

        if (!is_page()) {
            return false;
        }

        $current_url = home_url(add_query_arg([], $wp->request));
        $event_patterns = [
            '/trainer/events/create',
            '/trainer/events/edit',
            '/trainer/events/manage'
        ];

        foreach ($event_patterns as $pattern) {
            if (strpos($current_url, $pattern) !== false) {
                return true;
            }
        }

        return false;
    }

    /**
     * Render modal forms for creating new entities
     */
    public function render_creation_modals(): string {
        $modals_html = '';

        // New Organizer Modal
        $modals_html .= '
        <div id="new-organizer-modal" class="hvac-modal" style="display: none;">
            <div class="hvac-modal-content">
                <div class="hvac-modal-header">
                    <h3>Create New Organizer</h3>
                    <button type="button" class="hvac-modal-close" aria-label="Close">
                        <span class="dashicons dashicons-no-alt"></span>
                    </button>
                </div>
                <div class="hvac-modal-body">
                    <form id="new-organizer-form">
                        <div class="modal-form-row">
                            <label for="new-organizer-name"><strong>Organizer Name</strong> <span class="required">*</span></label>
                            <input type="text" id="new-organizer-name" name="organizer_name" required maxlength="100" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-organizer-email">Email Address</label>
                            <input type="email" id="new-organizer-email" name="organizer_email" maxlength="100" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-organizer-phone">Phone Number</label>
                            <input type="tel" id="new-organizer-phone" name="organizer_phone" maxlength="20" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-organizer-organization">Organization</label>
                            <input type="text" id="new-organizer-organization" name="organizer_organization" maxlength="100" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-organizer-website">Website</label>
                            <input type="url" id="new-organizer-website" name="organizer_website" maxlength="200" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-organizer-description">Description</label>
                            <textarea id="new-organizer-description" name="organizer_description" rows="3" maxlength="500"></textarea>
                        </div>
                    </form>
                </div>
                <div class="hvac-modal-footer">
                    <button type="button" class="btn btn-secondary hvac-modal-cancel">Cancel</button>
                    <button type="button" class="btn btn-primary" id="save-new-organizer">Create Organizer</button>
                </div>
            </div>
        </div>';

        // New Category Modal
        $modals_html .= '
        <div id="new-category-modal" class="hvac-modal" style="display: none;">
            <div class="hvac-modal-content">
                <div class="hvac-modal-header">
                    <h3>Create New Category</h3>
                    <button type="button" class="hvac-modal-close" aria-label="Close">
                        <span class="dashicons dashicons-no-alt"></span>
                    </button>
                </div>
                <div class="hvac-modal-body">
                    <form id="new-category-form">
                        <div class="modal-form-row">
                            <label for="new-category-name"><strong>Category Name</strong> <span class="required">*</span></label>
                            <input type="text" id="new-category-name" name="category_name" required maxlength="100" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-category-description">Description</label>
                            <textarea id="new-category-description" name="category_description" rows="3" maxlength="500"></textarea>
                        </div>
                        <div class="modal-form-row">
                            <label for="new-category-parent">Parent Category</label>
                            <select id="new-category-parent" name="category_parent">
                                <option value="">None (Top Level)</option>
                                <!-- Dynamic parent category options will be loaded here -->
                            </select>
                        </div>
                        <div class="modal-form-row">
                            <label for="new-category-color">Category Color</label>
                            <input type="color" id="new-category-color" name="category_color" value="#3498db" />
                        </div>
                    </form>
                </div>
                <div class="hvac-modal-footer">
                    <button type="button" class="btn btn-secondary hvac-modal-cancel">Cancel</button>
                    <button type="button" class="btn btn-primary" id="save-new-category">Create Category</button>
                </div>
            </div>
        </div>';

        // New Venue Modal
        $modals_html .= '
        <div id="new-venue-modal" class="hvac-modal" style="display: none;">
            <div class="hvac-modal-content">
                <div class="hvac-modal-header">
                    <h3>Create New Venue</h3>
                    <button type="button" class="hvac-modal-close" aria-label="Close">
                        <span class="dashicons dashicons-no-alt"></span>
                    </button>
                </div>
                <div class="hvac-modal-body">
                    <form id="new-venue-form">
                        <div class="modal-form-row">
                            <label for="new-venue-name"><strong>Venue Name</strong> <span class="required">*</span></label>
                            <input type="text" id="new-venue-name" name="venue_name" required maxlength="100" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-venue-address"><strong>Address</strong> <span class="required">*</span></label>
                            <input type="text" id="new-venue-address" name="venue_address" required maxlength="200" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-venue-city">City</label>
                            <input type="text" id="new-venue-city" name="venue_city" maxlength="100" />
                        </div>
                        <div class="modal-form-row-group">
                            <div class="modal-form-row-half">
                                <label for="new-venue-state">State</label>
                                <input type="text" id="new-venue-state" name="venue_state" maxlength="50" />
                            </div>
                            <div class="modal-form-row-half">
                                <label for="new-venue-zip">ZIP Code</label>
                                <input type="text" id="new-venue-zip" name="venue_zip" maxlength="10" />
                            </div>
                        </div>
                        <div class="modal-form-row">
                            <label for="new-venue-capacity">Maximum Capacity</label>
                            <input type="number" id="new-venue-capacity" name="venue_capacity" min="1" max="10000" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-venue-phone">Phone Number</label>
                            <input type="tel" id="new-venue-phone" name="venue_phone" maxlength="20" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-venue-website">Website</label>
                            <input type="url" id="new-venue-website" name="venue_website" maxlength="200" />
                        </div>
                        <div class="modal-form-row">
                            <label for="new-venue-description">Facilities & Description</label>
                            <textarea id="new-venue-description" name="venue_description" rows="3" maxlength="1000" placeholder="Parking, accessibility, equipment, etc."></textarea>
                        </div>
                    </form>
                </div>
                <div class="hvac-modal-footer">
                    <button type="button" class="btn btn-secondary hvac-modal-cancel">Cancel</button>
                    <button type="button" class="btn btn-primary" id="save-new-venue">Create Venue</button>
                </div>
            </div>
        </div>';

        return $modals_html;
    }

    /**
     * Generate enhanced UI CSS for all new components
     */
    private function get_enhanced_ui_css(): string {
        return '
        /* ===== RESPONSIVE FIELD GROUPING ===== */
        .form-row-group {
            display: flex;
            gap: 20px;
            width: 100%;
            margin-bottom: 15px;
        }

        .form-row-half {
            flex: 1;
            min-width: 0;
        }

        .datetime-group .form-row-half,
        .price-capacity-group .form-row-half,
        .sales-dates-group .form-row-half {
            display: flex;
            flex-direction: column;
        }

        @media (max-width: 768px) {
            .form-row-group {
                flex-direction: column;
                gap: 15px;
            }
            .form-row-half {
                width: 100%;
            }
        }

        /* ===== RICH TEXT EDITOR ===== */
        .rich-text-editor-wrapper {
            border: 1px solid #ddd;
            border-radius: 4px;
            background: #fff;
        }

        .rich-text-toolbar {
            border-bottom: 1px solid #ddd;
            padding: 8px 12px;
            background: #f9f9f9;
            display: flex;
            gap: 4px;
            flex-wrap: wrap;
        }

        .toolbar-group {
            display: flex;
            gap: 2px;
            border-right: 1px solid #ddd;
            padding-right: 8px;
            margin-right: 8px;
        }

        .toolbar-group:last-child {
            border-right: none;
            padding-right: 0;
            margin-right: 0;
        }

        .rich-text-toolbar button {
            background: #fff;
            border: 1px solid #ccd0d4;
            border-radius: 3px;
            padding: 8px 12px;
            cursor: pointer;
            font-size: 14px;
            min-width: 32px;
            height: 32px;
            color: #333;
            font-weight: 500;
        }

        .rich-text-toolbar button:hover {
            background: #f6f7f7;
            border-color: #999;
        }

        .rich-text-toolbar button.active {
            background: #007cba;
            border-color: #007cba;
            color: #fff;
        }

        .rich-text-editor {
            min-height: 200px;
            max-height: 400px;
            overflow-y: auto;
            padding: 12px;
            line-height: 1.6;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        }

        .rich-text-editor:focus {
            outline: none;
            box-shadow: 0 0 0 1px #007cba;
        }

        .rich-text-editor p { margin: 0 0 1em; }
        .rich-text-editor ul, .rich-text-editor ol { margin: 0 0 1em 20px; }
        .rich-text-editor h3 { margin: 0 0 0.5em; font-size: 1.2em; }
        .rich-text-editor a { color: #007cba; text-decoration: underline; }

        /* ===== FEATURED IMAGE UPLOADER ===== */
        .featured-image-section {
            background: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 20px;
            margin-bottom: 25px;
        }

        .featured-image-upload-wrapper {
            max-width: 400px;
        }

        .upload-area {
            border: 2px dashed #007cba;
            border-radius: 8px;
            padding: 40px 20px;
            text-align: center;
            background: #fff;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .upload-area:hover {
            border-color: #005177;
            background: #f0f8ff;
        }

        .upload-area.dragover {
            border-color: #005177;
            background: #e6f3ff;
            transform: scale(1.02);
        }

        .featured-image-preview {
            position: relative;
            max-width: 400px;
            border-radius: 8px;
            overflow: hidden;
        }

        .featured-image-preview img {
            width: 100%;
            height: auto;
            display: block;
        }

        .featured-image-actions {
            position: absolute;
            top: 10px;
            right: 10px;
            display: flex;
            gap: 8px;
        }

        .featured-image-actions button {
            background: rgba(0, 0, 0, 0.7);
            color: #fff;
            border: none;
            padding: 6px 12px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
        }

        .featured-image-actions button:hover {
            background: rgba(0, 0, 0, 0.9);
        }

        /* ===== TOGGLE SWITCHES ===== */
        .toggle-field-wrapper {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 20px;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 6px;
            border: 1px solid #e9ecef;
        }

        .toggle-switch {
            position: relative;
            display: inline-block;
            width: 50px;
            height: 24px;
            flex-shrink: 0;
        }

        .toggle-switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #ccc;
            transition: 0.3s;
            border-radius: 24px;
        }

        .toggle-slider:before {
            position: absolute;
            content: "";
            height: 18px;
            width: 18px;
            left: 3px;
            bottom: 3px;
            background-color: white;
            transition: 0.3s;
            border-radius: 50%;
        }

        .toggle-switch input:checked + .toggle-slider {
            background-color: #007cba;
        }

        .toggle-switch input:checked + .toggle-slider:before {
            transform: translateX(26px);
        }

        .toggle-label {
            flex: 1;
        }

        .toggle-label strong {
            display: block;
            margin-bottom: 4px;
            color: #333;
        }

        .toggle-description {
            margin: 0;
            color: #666;
            font-size: 14px;
            line-height: 1.4;
        }

        /* ===== SEARCHABLE SELECT COMPONENTS ===== */
        .searchable-select-wrapper {
            position: relative;
            width: 100%;
        }

        .search-input-wrapper {
            position: relative;
            display: flex;
        }

        .search-input {
            flex: 1;
            padding: 8px 40px 8px 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 14px;
        }

        .search-input:focus {
            outline: none;
            border-color: #007cba;
            box-shadow: 0 0 0 1px #007cba;
        }

        .dropdown-toggle {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

        .search-results {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border: 1px solid #ddd;
            border-top: none;
            border-radius: 0 0 4px 4px;
            max-height: 200px;
            overflow-y: auto;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
        }

        .results-list {
            max-height: 160px;
            overflow-y: auto;
        }

        .search-result-item {
            padding: 10px 12px;
            cursor: pointer;
            border-bottom: 1px solid #f0f0f0;
        }

        .search-result-item:hover {
            background: #f0f8ff;
        }

        .search-result-item:last-child {
            border-bottom: none;
        }

        .create-new-option {
            border-top: 1px solid #ddd;
            padding: 8px;
        }

        .create-new-btn {
            width: 100%;
            padding: 8px 12px;
            background: #007cba;
            color: #fff;
            border: none;
            border-radius: 3px;
            cursor: pointer;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .create-new-btn:hover {
            background: #005177;
        }

        .selected-items {
            margin-top: 10px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .selected-item {
            background: #e7f3ff;
            border: 1px solid #007cba;
            border-radius: 16px;
            padding: 4px 12px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .remove-item {
            background: none;
            border: none;
            cursor: pointer;
            color: #666;
            padding: 0;
            width: 16px;
            height: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .remove-item:hover {
            background: #ff4444;
            color: #fff;
        }

        /* Multi-select specific styles */
        .multi-select .search-input {
            min-height: 40px;
        }

        .multi-select .selected-items:not(:empty) + .search-input-wrapper .search-input {
            border-top: 1px solid #ddd;
        }

        /* ===== MODAL FORMS ===== */
        .hvac-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: 100000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .hvac-modal-content {
            background: #fff;
            border-radius: 8px;
            width: 100%;
            max-width: 600px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .hvac-modal-header {
            padding: 20px 24px;
            border-bottom: 1px solid #e9ecef;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .hvac-modal-header h3 {
            margin: 0;
            font-size: 18px;
            color: #333;
        }

        .hvac-modal-close {
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            color: #666;
        }

        .hvac-modal-close:hover {
            color: #333;
        }

        .hvac-modal-body {
            padding: 24px;
        }

        .modal-form-row {
            margin-bottom: 20px;
        }

        .modal-form-row label {
            display: block;
            margin-bottom: 6px;
            font-weight: 600;
            color: #333;
        }

        .modal-form-row input,
        .modal-form-row select,
        .modal-form-row textarea {
            width: 100%;
            padding: 10px 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 14px;
        }

        .modal-form-row input:focus,
        .modal-form-row select:focus,
        .modal-form-row textarea:focus {
            outline: none;
            border-color: #007cba;
            box-shadow: 0 0 0 1px #007cba;
        }

        .modal-form-row-group {
            display: flex;
            gap: 15px;
        }

        .modal-form-row-half {
            flex: 1;
        }

        .required {
            color: #d63384;
        }

        .hvac-modal-footer {
            padding: 20px 24px;
            border-top: 1px solid #e9ecef;
            display: flex;
            justify-content: flex-end;
            gap: 12px;
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            text-align: center;
            text-decoration: none;
            display: inline-block;
            transition: all 0.2s;
        }

        .btn-primary {
            background: #007cba;
            color: #fff;
        }

        .btn-primary:hover {
            background: #005177;
        }

        .btn-secondary {
            background: #6c757d;
            color: #fff;
        }

        .btn-secondary:hover {
            background: #545b62;
        }

        /* ===== FORM SECTIONS ===== */
        .form-section {
            margin-bottom: 25px;
            border-radius: 6px;
        }

        .form-section-title {
            margin: 0 0 15px 0;
            font-size: 16px;
            font-weight: 600;
            color: #333;
        }

        .virtual-event-config,
        .rsvp-config {
            background: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: 6px;
            padding: 20px;
            margin-top: 15px;
        }

        .virtual-event-config h4,
        .rsvp-config h4 {
            margin: 0 0 15px 0;
            font-size: 14px;
            font-weight: 600;
            color: #495057;
        }

        /* ===== RESPONSIVE DESIGN ===== */
        @media (max-width: 768px) {
            .hvac-modal-content {
                margin: 10px;
                max-height: 95vh;
            }

            .hvac-modal-header,
            .hvac-modal-body,
            .hvac-modal-footer {
                padding: 16px;
            }

            .modal-form-row-group {
                flex-direction: column;
                gap: 10px;
            }

            .toggle-field-wrapper {
                flex-direction: column;
                gap: 8px;
            }

            .rich-text-toolbar {
                padding: 6px 8px;
            }

            .toolbar-group {
                margin-right: 6px;
                padding-right: 6px;
            }
        }
        ';
    }
}

// Initialize the TEC Tickets integration
HVAC_TEC_Tickets::instance();