<?php
/**
 * HVAC Shortcodes Manager
 *
 * Centralized management of all plugin shortcodes
 *
 * @package HVAC_Community_Events
 * @since 2.0.0
 */

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

/**
 * HVAC_Shortcodes class
 */
class HVAC_Shortcodes {
    
    /**
     * Instance
     * 
     * @var HVAC_Shortcodes
     */
    private static $instance = null;
    
    /**
     * Registered shortcodes
     * 
     * @var array
     */
    private $shortcodes = array();
    
    /**
     * Get instance
     * 
     * @return HVAC_Shortcodes
     */
    public static function instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    /**
     * Constructor
     */
    private function __construct() {
        $this->define_shortcodes();
        $this->register_shortcodes();
    }
    
    /**
     * Define all plugin shortcodes
     * 
     * @return void
     */
    private function define_shortcodes() {
        $this->shortcodes = array(
            // Dashboard shortcodes
            'hvac_dashboard' => array(
                'callback' => array($this, 'render_dashboard'),
                'description' => 'Trainer dashboard'
            ),
            'hvac_master_dashboard' => array(
                'callback' => array($this, 'render_master_dashboard'),
                'description' => 'Master trainer dashboard'
            ),
            
            // Event management shortcodes
            'hvac_manage_event' => array(
                'callback' => array($this, 'render_manage_event'),
                'description' => 'Event management form'
            ),
            'hvac_event_summary' => array(
                'callback' => array($this, 'render_event_summary'),
                'description' => 'Event summary page'
            ),
            
            // Authentication shortcodes
            'hvac_community_login' => array(
                'callback' => array($this, 'render_login'),
                'description' => 'Community login form'
            ),
            'hvac_trainer_registration' => array(
                'callback' => array($this, 'render_registration'),
                'description' => 'Trainer registration form'
            ),
            
            // Profile shortcodes
            'hvac_trainer_profile' => array(
                'callback' => array($this, 'render_trainer_profile'),
                'description' => 'Trainer profile page'
            ),
            
            // Certificate shortcodes
            'hvac_certificate_reports' => array(
                'callback' => array($this, 'render_certificate_reports'),
                'description' => 'Certificate reports page'
            ),
            'hvac_generate_certificates' => array(
                'callback' => array($this, 'render_generate_certificates'),
                'description' => 'Certificate generation page'
            ),
            
            // Communication shortcodes
            'hvac_email_attendees' => array(
                'callback' => array($this, 'render_email_attendees'),
                'description' => 'Email attendees interface'
            ),
            'hvac_communication_templates' => array(
                'callback' => array($this, 'render_communication_templates'),
                'description' => 'Communication templates management'
            ),
            'hvac_communication_schedules' => array(
                'callback' => array($this, 'render_communication_schedules'),
                'description' => 'Communication schedules management'
            ),
            
            // Admin shortcodes
            'hvac_google_sheets' => array(
                'callback' => array($this, 'render_google_sheets_admin'),
                'description' => 'Google Sheets integration admin'
            ),
        );
        
        // Allow filtering of shortcode definitions
        $this->shortcodes = apply_filters('hvac_shortcode_definitions', $this->shortcodes);
    }
    
    /**
     * Register all shortcodes
     * 
     * @return void
     */
    private function register_shortcodes() {
        foreach ($this->shortcodes as $tag => $config) {
            add_shortcode($tag, $config['callback']);
        }
        
        // Log registration
        HVAC_Logger::info('Registered ' . count($this->shortcodes) . ' shortcodes', 'Shortcodes');
    }
    
    /**
     * Get registered shortcodes
     * 
     * @return array
     */
    public function get_shortcodes() {
        return $this->shortcodes;
    }
    
    /**
     * Check if shortcode is registered
     * 
     * @param string $tag Shortcode tag
     * @return bool
     */
    public function is_registered($tag) {
        return isset($this->shortcodes[$tag]);
    }
    
    // ========================================
    // Shortcode Render Methods
    // ========================================
    
    /**
     * Render dashboard shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_dashboard($atts = array()) {
        // Add debug comment to verify this method is being called
        $debug = '<!-- HVAC_Shortcodes::render_dashboard called -->';
        
        // Use the HVAC_Community_Events instance method
        if (class_exists('HVAC_Community_Events')) {
            $hvac = HVAC_Community_Events::get_instance();
            if (method_exists($hvac, 'render_dashboard')) {
                return $debug . $hvac->render_dashboard();
            }
        }
        
        // Fallback if class not available
        if (!is_user_logged_in()) {
            return $debug . '<p>' . __('Please log in to view the dashboard.', 'hvac-community-events') . '</p>';
        }
        
        // Include the dashboard template
        ob_start();
        include HVAC_PLUGIN_DIR . 'templates/template-hvac-dashboard.php';
        return ob_get_clean();
    }
    
    /**
     * Render master dashboard shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_master_dashboard($atts = array()) {
        // Add debug comment to verify this method is being called
        $debug = '<!-- HVAC_Shortcodes::render_master_dashboard called -->';
        
        // Use the HVAC_Community_Events instance method
        if (class_exists('HVAC_Community_Events')) {
            $hvac = HVAC_Community_Events::get_instance();
            if (method_exists($hvac, 'render_master_dashboard')) {
                return $debug . $hvac->render_master_dashboard();
            }
        }
        
        // Fallback if class not available
        if (!is_user_logged_in()) {
            return $debug . '<p>' . __('Please log in to view the master dashboard.', 'hvac-community-events') . '</p>';
        }
        
        if (!current_user_can('view_master_dashboard') && !current_user_can('view_all_trainer_data') && !current_user_can('administrator')) {
            return $debug . '<div class="hvac-error">' . __('You do not have permission to view the master dashboard. This dashboard is only available to Master Trainers and Administrators.', 'hvac-community-events') . '</div>';
        }
        
        // Include the master dashboard template
        ob_start();
        include HVAC_PLUGIN_DIR . 'templates/template-hvac-master-dashboard.php';
        return ob_get_clean();
    }
    
    /**
     * Render manage event shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_manage_event($atts = array()) {
        // The manage event page uses The Events Calendar Community Events shortcode
        // This shortcode is just a placeholder since the actual functionality 
        // is handled by the tribe_community_events shortcode
        if (!shortcode_exists('tribe_community_events')) {
            return '<p>' . __('Event management requires The Events Calendar Community Events add-on.', 'hvac-community-events') . '</p>';
        }
        
        // Return the tribe shortcode
        return '[tribe_community_events]';
    }
    
    /**
     * Render event summary shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_event_summary($atts = array()) {
        if (!class_exists('HVAC_Event_Summary')) {
            return '<p>' . __('Event summary functionality not available.', 'hvac-community-events') . '</p>';
        }
        
        $event_summary = new HVAC_Event_Summary();
        return $event_summary->render_summary($atts);
    }
    
    /**
     * Render login shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_login($atts = array()) {
        if (!class_exists('\\HVAC_Community_Events\\Community\\Login_Handler')) {
            return '<p>' . __('Login functionality not available.', 'hvac-community-events') . '</p>';
        }
        
        $login_handler = new \HVAC_Community_Events\Community\Login_Handler();
        return $login_handler->render_login_form($atts);
    }
    
    /**
     * Render registration shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_registration($atts = array()) {
        if (!class_exists('HVAC_Registration')) {
            return '<p>' . __('Registration functionality not available.', 'hvac-community-events') . '</p>';
        }
        
        $registration = new HVAC_Registration();
        return $registration->render_registration_form($atts);
    }
    
    /**
     * Render trainer profile shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_trainer_profile($atts = array()) {
        if (!class_exists('HVAC_Trainer_Profile')) {
            return '<p>' . __('Profile functionality not available.', 'hvac-community-events') . '</p>';
        }
        
        $trainer_profile = new HVAC_Trainer_Profile();
        return $trainer_profile->render_profile($atts);
    }
    
    /**
     * Render certificate reports shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_certificate_reports($atts = array()) {
        // Redirect to manager if available
        if (class_exists('HVAC_Certificate_Manager')) {
            $cert_manager = new HVAC_Certificate_Manager();
            return $cert_manager->render_reports_page();
        }
        
        return '<p>' . __('Certificate reports functionality not available.', 'hvac-community-events') . '</p>';
    }
    
    /**
     * Render generate certificates shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_generate_certificates($atts = array()) {
        // Redirect to manager if available
        if (class_exists('HVAC_Certificate_Manager')) {
            $cert_manager = new HVAC_Certificate_Manager();
            return $cert_manager->render_generate_page();
        }
        
        return '<p>' . __('Certificate generation functionality not available.', 'hvac-community-events') . '</p>';
    }
    
    /**
     * Render email attendees shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_email_attendees($atts = array()) {
        // Check if user has appropriate permissions
        if (!current_user_can('edit_tribe_events')) {
            return '<p>' . __('You do not have permission to access this page.', 'hvac-community-events') . '</p>';
        }
        
        ob_start();
        include HVAC_PLUGIN_DIR . 'templates/email-attendees.php';
        return ob_get_clean();
    }
    
    /**
     * Render communication templates shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_communication_templates($atts = array()) {
        if (!class_exists('HVAC_Communication_Templates')) {
            return '<p>' . __('Communication templates functionality not available.', 'hvac-community-events') . '</p>';
        }
        
        // Check permissions
        if (!current_user_can('edit_tribe_events') && !current_user_can('manage_options')) {
            return '<p>' . __('You do not have permission to access this page.', 'hvac-community-events') . '</p>';
        }
        
        $templates = new HVAC_Communication_Templates();
        
        ob_start();
        $templates->render_admin_page();
        return ob_get_clean();
    }
    
    /**
     * Render communication schedules shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_communication_schedules($atts = array()) {
        if (!class_exists('HVAC_Communication_Scheduler')) {
            return '<p>' . __('Communication scheduler functionality not available.', 'hvac-community-events') . '</p>';
        }
        
        // Check permissions
        if (!current_user_can('edit_tribe_events') && !current_user_can('manage_options')) {
            return '<p>' . __('You do not have permission to access this page.', 'hvac-community-events') . '</p>';
        }
        
        $scheduler = hvac_communication_scheduler();
        
        ob_start();
        $scheduler->render_schedules_page();
        return ob_get_clean();
    }
    
    /**
     * Render Google Sheets admin shortcode
     * 
     * @param array $atts Shortcode attributes
     * @return string
     */
    public function render_google_sheets_admin($atts = array()) {
        if (!class_exists('HVAC_Google_Sheets_Admin')) {
            return '<p>' . __('Google Sheets functionality not available.', 'hvac-community-events') . '</p>';
        }
        
        // Check permissions
        if (!current_user_can('manage_options') && !current_user_can('view_all_trainer_data')) {
            return '<p>' . __('You do not have permission to access this page.', 'hvac-community-events') . '</p>';
        }
        
        $google_sheets = new HVAC_Google_Sheets_Admin();
        
        ob_start();
        $google_sheets->render_admin_page();
        return ob_get_clean();
    }
}