<?php
namespace Digiter\BuilderStudio;
defined('ABSPATH') || exit;

/** Explicit publication events and editor-only optimizer exclusions. */
final class Compatibility {
    private static bool $site=false;
    private static array $posts=[];
    public function __construct(){
        add_action('digibl_document_published',static function($id){
            if(get_post_type((int)$id)==='digibl_template'){self::$site=true;}else{self::$posts[(int)$id]=true;}
        });
        foreach(['digibl_global_styles_changed','digibl_site_templates_changed'] as $hook){add_action($hook,static function(){self::$site=true;});}
        // LiteSpeed emits purge headers at shutdown priority 0. Queue before that.
        add_action('shutdown',[self::class,'flush'],-10);
        add_filter('cloudflare_purge_everything_actions',static fn($actions)=>array_values(array_unique(array_merge((array)$actions,['digibl_cache_site_changed']))));
        add_filter('cloudflare_purge_url_actions',static fn($actions)=>array_values(array_unique(array_merge((array)$actions,['digibl_cache_post_changed']))));
        add_filter('autoptimize_filter_noptimize',static fn($value)=>self::editor_request()?true:$value);
        add_filter('script_loader_tag',static function($tag,$handle){
            if(!self::editor_request()||!str_starts_with($handle,'dbs-')){return $tag;}
            $html=new \WP_HTML_Tag_Processor($tag);
            if($html->next_tag('SCRIPT')){$html->set_attribute('data-cfasync','false');$html->set_attribute('data-no-optimize','1');}
            return $html->get_updated_html();
        },10,2);
        add_filter('debug_information',static function($info){
            $info['digiter-builder']=['label'=>'Digiter Builder','fields'=>[
                'version'=>['label'=>'Plugin version','value'=>DIGIBL_VERSION],
                'api'=>['label'=>'Public API version','value'=>Modules::API_VERSION],
                'extensions'=>['label'=>'Registered extension modules','value'=>count(Modules::catalog())],
                'css'=>['label'=>'Page CSS selection','value'=>apply_filters('digibl_page_css_enabled',true)?'Enabled':'Compatibility mode'],
                'theme'=>['label'=>'Theme region support','value'=>ThemeSupport::supported()?'Available':'Content editing; theme regions retained'],
            ]];return $info;
        });
    }
    private static function editor_request(): bool {
        return isset($_GET['digibl_builder'])||isset($_GET['digibl_frame'])||isset($_GET['digibl_view'])||(is_admin()&&sanitize_key(wp_unslash($_GET['page']??''))==='digiter-builder');
    }
    public static function flush(): void {
        if(!self::$site&&!self::$posts){return;}
        $site=self::$site;$posts=array_keys(self::$posts);self::$site=false;self::$posts=[];
        // Hosting adapters may opt out of these integrations and handle the hooks.
        if(apply_filters('digibl_cache_integrations_enabled',true)){
            $callbacks=[];
            if(function_exists('wp_cache_clear_cache')){$callbacks['wp-super-cache']=static function(){is_multisite()?wp_cache_clear_cache(get_current_blog_id()):wp_cache_clear_cache();};}
            if(function_exists('w3tc_pgcache_flush')){$callbacks['w3-total-cache']='w3tc_pgcache_flush';}
            if(!is_multisite()&&is_callable(['Cache_Enabler','clear_total_cache'])){$callbacks['cache-enabler']=['Cache_Enabler','clear_total_cache'];}
            if(is_callable(['Breeze_PurgeCache','breeze_cache_flush'])){$callbacks['breeze']=['Breeze_PurgeCache','breeze_cache_flush'];}
            if(function_exists('rocket_clean_domain')&&function_exists('rocket_clean_post')){
                $callbacks['wp-rocket']=static function()use($site,$posts){if($site){rocket_clean_domain();}else{foreach($posts as $id)rocket_clean_post($id);}};
            }
            if(has_action('litespeed_purge_all')||has_action('litespeed_purge_post')){
                $callbacks['litespeed-cache']=static function()use($site,$posts){if($site){do_action('litespeed_purge_all');}else{foreach($posts as $id)do_action('litespeed_purge_post',$id);}};
            }
            if(is_callable(['DPCU_Cache','purge_all_complete'])){
                // Reusable regions and dynamic queries can appear on any cached URL.
                $callbacks['digiter-page-caching-ultra']=static function(){\DPCU_Cache::purge_all_complete(null,'digiter-builder-published');};
            }
            foreach($callbacks as $name=>$callback){try{call_user_func($callback);}catch(\Throwable $error){do_action('digibl_cache_integration_error',$name,$error);}}
        }
        if($site){do_action('digibl_cache_site_changed');}
        else{foreach($posts as $id){do_action('digibl_cache_post_changed',$id);}}
    }
}