<?php
/**
 * HVAC Astra Theme Integration
 * 
 * Properly integrates HVAC plugin with Astra theme using theme-specific hooks and filters
 *
 * @package HVAC_Community_Events
 * @since 1.0.0
 */

// Exit if accessed directly
if (!defined('ABSPATH')) {
    exit;
}

/**
 * HVAC Astra Integration Class
 */
class HVAC_Astra_Integration {
    
    /**
     * Instance
     *
     * @var HVAC_Astra_Integration
     */
    private static $instance = null;
    
    /**
     * Get instance
     */
    public static function instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    /**
     * Constructor
     */
    private function __construct() {
        // Only run if Astra theme is active
        if (!defined('ASTRA_THEME_VERSION')) {
            return;
        }
        
        $this->init_hooks();
    }
    
    /**
     * Initialize hooks
     */
    private function init_hooks() {
        // Early init to catch template redirects
        add_action('template_redirect', [$this, 'ensure_correct_template'], 1);
        
        // Layout filters - use higher priority to ensure they run after Astra's defaults
        add_filter('astra_page_layout', [$this, 'force_hvac_page_layout'], 999);
        add_filter('astra_get_content_layout', [$this, 'force_hvac_content_layout'], 999);
        add_filter('astra_site_layout', [$this, 'force_hvac_site_layout'], 999);
        
        // Container filters
        add_filter('astra_container_class', [$this, 'modify_container_class'], 999, 2);
        add_filter('astra_get_container_class', [$this, 'get_hvac_container_class'], 999);
        
        // Body classes
        add_filter('body_class', [$this, 'add_hvac_body_classes'], 999);
        
        // Content width
        add_action('wp', [$this, 'setup_hvac_content_width'], 999);
        
        // Dynamic CSS
        add_filter('astra_dynamic_theme_css', [$this, 'add_hvac_dynamic_css'], 999);
        
        // Disable sidebar for HVAC pages
        add_action('wp', [$this, 'disable_sidebar_for_hvac_pages'], 1);
        
        // Force template usage
        add_filter('template_include', [$this, 'force_hvac_template'], 999);
        
        // Disable Astra breadcrumbs for HVAC pages
        add_filter('astra_breadcrumb_enabled', [$this, 'disable_astra_breadcrumbs'], 999);
        add_filter('astra_get_option_ast-breadcrumbs-content', [$this, 'disable_breadcrumb_option'], 999);
        add_filter('astra_get_option_breadcrumb-position', [$this, 'disable_breadcrumb_position'], 999);
    }
    
    /**
     * Force page layout for HVAC pages
     */
    public function force_hvac_page_layout($layout) {
        if ($this->is_hvac_page()) {
            return 'no-sidebar';
        }
        return $layout;
    }
    
    /**
     * Force content layout for HVAC pages
     */
    public function force_hvac_content_layout($layout) {
        if ($this->is_hvac_page()) {
            return 'plain-container';
        }
        return $layout;
    }
    
    /**
     * Force site layout for HVAC pages
     */
    public function force_hvac_site_layout($layout) {
        if ($this->is_hvac_page()) {
            return 'ast-full-width-layout';
        }
        return $layout;
    }
    
    /**
     * Modify container class for HVAC pages
     */
    public function modify_container_class($classes, $layout) {
        if ($this->is_hvac_page()) {
            // Remove any constrained container classes
            $classes = str_replace('ast-container', 'ast-full-width-container', $classes);
        }
        return $classes;
    }
    
    /**
     * Get HVAC-specific container class
     */
    public function get_hvac_container_class($class) {
        if ($this->is_hvac_page()) {
            return 'ast-full-width-container';
        }
        return $class;
    }
    
    /**
     * Add HVAC-specific body classes
     */
    public function add_hvac_body_classes($classes) {
        if ($this->is_hvac_page()) {
            // Add Astra-specific classes for full-width layout
            $classes[] = 'ast-no-sidebar';
            $classes[] = 'ast-separate-container';
            $classes[] = 'ast-full-width-layout';
            $classes[] = 'ast-plain-container';
            $classes[] = 'hvac-astra-integrated';
            
            // Remove conflicting classes
            $remove_classes = ['ast-right-sidebar', 'ast-left-sidebar', 'ast-page-builder-template'];
            $classes = array_diff($classes, $remove_classes);
        }
        
        return $classes;
    }
    
    /**
     * Setup content width for HVAC pages
     */
    public function setup_hvac_content_width() {
        if ($this->is_hvac_page()) {
            // Set global content width
            global $content_width;
            $content_width = 1920; // Full HD width
            
            // Update Astra's content width
            add_filter('astra_get_content_width', function() {
                return 1920;
            }, 999);
        }
    }
    
    /**
     * Add dynamic CSS for HVAC pages
     */
    public function add_hvac_dynamic_css($css) {
        if ($this->is_hvac_page()) {
            $hvac_css = '
                /* HVAC Full-width overrides for Astra */
                .hvac-astra-integrated .ast-container {
                    max-width: 100% !important;
                    width: 100% !important;
                    padding-left: 40px !important;
                    padding-right: 40px !important;
                }
                
                .hvac-astra-integrated .site-content .ast-container {
                    max-width: 100% !important;
                }
                
                .hvac-astra-integrated .hvac-page-wrapper {
                    max-width: 1920px;
                    margin: 0 auto;
                }
                
                /* Remove sidebar completely */
                .hvac-astra-integrated .widget-area,
                .hvac-astra-integrated .ast-sidebar,
                .hvac-astra-integrated #secondary,
                .hvac-astra-integrated aside.widget-area,
                .hvac-astra-integrated .sidebar-main {
                    display: none !important;
                    width: 0 !important;
                    height: 0 !important;
                    visibility: hidden !important;
                    position: absolute !important;
                    left: -9999px !important;
                }
                
                /* Full-width content area */
                .hvac-astra-integrated #primary,
                .hvac-astra-integrated .site-main,
                .hvac-astra-integrated .content-area {
                    width: 100% !important;
                    max-width: 100% !important;
                    margin: 0 !important;
                    float: none !important;
                    display: block !important;
                }
                
                /* Force single column layout */
                .hvac-astra-integrated .ast-container > .ast-row {
                    display: block !important;
                }
                
                .hvac-astra-integrated .ast-col-md-8,
                .hvac-astra-integrated .ast-col-lg-8 {
                    width: 100% !important;
                    max-width: 100% !important;
                }
                
                /* Ensure content takes full width */
                .hvac-astra-integrated .entry-content {
                    width: 100% !important;
                    max-width: 100% !important;
                }
            ';
            
            $css .= $hvac_css;
        }
        
        return $css;
    }
    
    /**
     * Disable sidebar for HVAC pages
     */
    public function disable_sidebar_for_hvac_pages() {
        if ($this->is_hvac_page()) {
            // Remove ALL sidebar actions from Astra
            remove_action('astra_sidebars', 'astra_get_sidebar');
            remove_action('astra_sidebar', 'astra_get_sidebar');
            remove_action('astra_primary_content_bottom', 'astra_primary_content_bottom');
            
            // Force sidebar removal via filters
            add_filter('astra_display_sidebar', '__return_false', 999);
            add_filter('is_active_sidebar', [$this, 'disable_sidebar'], 999, 2);
            
            // Update post meta to ensure no sidebar
            global $post;
            if ($post) {
                update_post_meta($post->ID, 'site-sidebar-layout', 'no-sidebar');
                update_post_meta($post->ID, 'site-content-layout', 'plain-container');
                update_post_meta($post->ID, 'ast-site-sidebar-layout', 'no-sidebar');
                update_post_meta($post->ID, 'ast-featured-img', 'disabled');
                update_post_meta($post->ID, 'ast-breadcrumbs-content', 'disabled');
            }
        }
    }
    
    /**
     * Disable sidebar check for HVAC pages
     */
    public function disable_sidebar($is_active, $index) {
        if ($this->is_hvac_page()) {
            return false;
        }
        return $is_active;
    }
    
    /**
     * Check if current page is an HVAC page
     */
    private function is_hvac_page() {
        // Check by template
        if (is_page_template()) {
            $template = get_page_template_slug();
            if (strpos($template, 'page-trainer') !== false || 
                strpos($template, 'page-master') !== false ||
                strpos($template, 'page-certificate') !== false ||
                strpos($template, 'page-generate') !== false) {
                return true;
            }
        }
        
        // Check by URL
        $current_url = $_SERVER['REQUEST_URI'];
        $hvac_paths = ['trainer/', 'master-trainer/', 'certificate', 'generate-certificates'];
        
        foreach ($hvac_paths as $path) {
            if (strpos($current_url, $path) !== false) {
                return true;
            }
        }
        
        // Check by page slug
        if (is_page()) {
            global $post;
            if ($post) {
                $slug = $post->post_name;
                $hvac_slugs = ['trainer', 'dashboard', 'profile', 'certificate', 'venue', 'organizer'];
                foreach ($hvac_slugs as $hvac_slug) {
                    if (strpos($slug, $hvac_slug) !== false) {
                        return true;
                    }
                }
            }
        }
        
        return false;
    }
    
    /**
     * Ensure correct template is loaded
     */
    public function ensure_correct_template() {
        if ($this->is_hvac_page() && is_page()) {
            global $post;
            if ($post && $post->post_name === 'profile') {
                // Force the profile template
                $template = get_post_meta($post->ID, '_wp_page_template', true);
                if (empty($template) || $template === 'default') {
                    update_post_meta($post->ID, '_wp_page_template', 'templates/page-trainer-profile.php');
                }
            }
        }
    }
    
    /**
     * Force HVAC template loading
     */
    public function force_hvac_template($template) {
        // Temporarily disabled to avoid errors
        return $template;
    }
    
    /**
     * Disable Astra breadcrumbs for HVAC pages
     */
    public function disable_astra_breadcrumbs($enabled) {
        if ($this->is_hvac_page()) {
            return false;
        }
        return $enabled;
    }
    
    /**
     * Disable breadcrumb option for HVAC pages
     */
    public function disable_breadcrumb_option($option) {
        if ($this->is_hvac_page()) {
            return 'disabled';
        }
        return $option;
    }
    
    /**
     * Disable breadcrumb position for HVAC pages
     */
    public function disable_breadcrumb_position($position) {
        if ($this->is_hvac_page()) {
            return '';
        }
        return $position;
    }
}

// Initialize
HVAC_Astra_Integration::instance();