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

/** Region adapters use theme extension points and leave the main template intact. */
final class ThemeSupport {
    private string $hello_region='';
    public const THEMES=['astra'=>'Astra','generatepress'=>'GeneratePress','kadence'=>'Kadence','blocksy'=>'Blocksy','oceanwp'=>'OceanWP','neve'=>'Neve','hello-elementor'=>'Hello Elementor'];
    public function __construct(){add_action('template_redirect',[$this,'attach'],90);}
    public static function supported(): bool {return wp_is_block_theme()||current_theme_supports('digiter-builder-regions')||isset(self::THEMES[get_template()]);}
    public static function region(string $area): string {
        if(!in_array($area,['header','footer'],true)){return '';}
        $source=ThemeBuilder::$active[$area]??0;
        if(!$source){return '';}
        return '<'.$area.' class="dbs-site-'.$area.'" data-dbs-theme-region="'.$area.'">'.ThemeBuilder::render($source,is_singular()?get_queried_object_id():0,$area).'</'.$area.'>';
    }
    /** Remove only the named renderer, keeping unrelated widgets and mobile portals. */
    private function remove_renderers(string $hook,array $names): void {
        global $wp_filter;
        foreach(($wp_filter[$hook]->callbacks??[]) as $priority=>$callbacks){
            foreach($callbacks as $entry){$callback=$entry['function'];$name=is_string($callback)?$callback:(is_array($callback)?(is_object($callback[0])?get_class($callback[0]):$callback[0]).'::'.$callback[1]:'');if(in_array($name,$names,true)){remove_action($hook,$callback,$priority);}}
        }
    }
    private function replace_action(string $hook,string $area,array $renderers): void {
        // Keep third-party callbacks (analytics, accessibility, widgets and portals).
        $this->remove_renderers($hook,$renderers);
        add_action($hook,static function()use($area){echo self::region($area);},10); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Region uses the Builder renderer which validates documents and escapes every module field; preserve forms, styles and script assets.
    }
    public function attach(): void {
        if(wp_is_block_theme()||!ThemeBuilder::$active){return;}
        $theme=get_template(); // Parent slug also supports child themes using parent hooks.
        foreach(['header','footer'] as $area){
            if(empty(ThemeBuilder::$active[$area])){continue;}
            switch($theme){
                case 'astra':
                    if($area==='footer'){
                        $this->remove_renderers('astra_footer',['astra_footer_markup','Astra_Builder_Footer::footer_markup']);
                        add_action('astra_footer',static function(){echo self::region('footer');},10); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Region uses the Builder renderer which validates documents and escapes every module field; preserve forms, styles and script assets.
                    }else{$this->replace_action('astra_header','header',['astra_header_markup','Astra_Builder_Header::global_astra_header','Astra_Mobile_Header::mobile_header_markup']);}
                    break;
                case 'generatepress':
                    $this->replace_action('generate_'.$area,$area,$area==='header'?['generate_construct_header']:['generate_construct_footer','generate_construct_footer_widgets']);
                    if($area==='header'){
                        remove_action('generate_before_header','generate_top_bar',5);
                        remove_action('generate_before_header','generate_add_navigation_before_header',5);
                        remove_action('generate_after_header','generate_add_navigation_after_header',5);
                    }
                    break;
                case 'kadence': $this->replace_action('kadence_'.$area,$area,['Kadence\\'.$area.'_markup']);break;
                case 'oceanwp':
                    $this->replace_action('ocean_'.$area,$area,['oceanwp_'.$area.'_template']);
                    if($area==='header'){add_filter('ocean_display_top_bar','__return_false');}
                    break;
                case 'neve':
                    $this->replace_action('hfg_'.$area.'_render',$area,['HFG\\Core\\Builder\\'.ucfirst($area).'::load_template']);
                    add_filter('neve_filter_toggle_content_parts',static fn($show,$part)=>$part===$area?true:$show,99,2);
                    break;
                case 'blocksy':
                    add_filter('blocksy:builder:'.$area.':enabled','__return_false',99);
                    add_action('blocksy:'.$area.':before',static function()use($area){echo self::region($area);}); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Region uses the Builder renderer which validates documents and escapes every module field; preserve forms, styles and script assets.
                    break;
            }
        }
        if($theme==='hello-elementor'){
            add_action('get_header',function(){$this->hello_region='header';},0);
            add_action('get_footer',function(){$this->hello_region='footer';if(isset(ThemeBuilder::$active['footer'])){echo self::region('footer');}},0); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Region uses the Builder renderer which validates documents and escapes every module field; preserve forms, styles and script assets.
            add_filter('hello_elementor_header_footer',fn($show)=>isset(ThemeBuilder::$active[$this->hello_region])?false:$show,99);
            add_action('wp_body_open',static function(){echo self::region('header');},20); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Region uses the Builder renderer which validates documents and escapes every module field; preserve forms, styles and script assets.
        }
    }
}