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

/** Local fonts and adjustable mobile/tablet widths; no remote font service. */
final class DesignSystem {
    public function __construct(){add_filter('upload_mimes',[$this,'mimes']);add_filter('wp_handle_upload_prefilter',[$this,'font_upload']);add_filter('wp_handle_sideload_prefilter',[$this,'font_upload']);}
    public function mimes(array $mimes): array {if(current_user_can('manage_options')&&current_user_can('upload_files')){$mimes['woff']='font/woff';$mimes['woff2']='font/woff2';}return $mimes;}
    public function font_upload(array $file): array {
        $ext=strtolower(pathinfo($file['name'],PATHINFO_EXTENSION));if(!in_array($ext,['woff','woff2'],true)){return $file;}
        $magic=is_file($file['tmp_name'])?file_get_contents($file['tmp_name'],false,null,0,4):'';
        if(!current_user_can('manage_options')||(!is_file($file['tmp_name'])||filesize($file['tmp_name'])>5*1024*1024)||$magic!==($ext==='woff2'?'wOF2':'wOFF')){$file['error']='Upload a valid WOFF/WOFF2 font, up to 5 MB, using an administrator account.';}return $file;
    }
    public static function font(int $id): array {
        if(!$id||get_post_type($id)!=='attachment'||!in_array(get_post_mime_type($id),['font/woff','font/woff2','application/font-woff','application/font-woff2'],true)){return [];}
        $url=wp_get_attachment_url($id);$file=get_attached_file($id);if(!$url||!$file||!is_file($file)||!in_array(strtolower(pathinfo($file,PATHINFO_EXTENSION)),['woff','woff2'],true)){return [];}
        return ['family'=>'DigiterFont'.$id,'url'=>Document::url($url),'format'=>strtolower(pathinfo($file,PATHINFO_EXTENSION))];
    }
    public static function styles(array $s): array {
        $css='';$class='';$inline='';
        foreach(['bodyFont','titleFont'] as $key){$font=self::font((int)($s[$key]??0));if(!$font){continue;}$url=strtr($font['url'],['"'=>'%22',"'"=>'%27','('=>'%28',')'=>'%29',chr(92)=>'%5C','<'=>'%3C','>'=>'%3E']);
            $css.='@font-face{font-family:'.$font['family'].';src:url("'.$url.'") format("'.$font['format'].'");font-display:swap}';
            if($key==='bodyFont'){$inline.='font-family:'.$font['family'].',sans-serif;';}else{$inline.='--dbs-heading-font:'.$font['family'].',sans-serif;';$class.=' dbs-custom-headings';}
        }
        $mobile=(int)($s['mobileBreakpoint']??600);$tablet=(int)($s['tabletBreakpoint']??900);
        if($mobile!==600||$tablet!==900){
            $name='dbs-responsive-'.$mobile.'-'.$tablet;$class.=' dbs-custom-responsive '.$name;
            $template=file_get_contents(DIGIBL_PATH.'assets/responsive-template.css');$template=strtr($template,['max-width:600px'=>'max-width:'.$mobile.'px','min-width:601px'=>'min-width:'.($mobile+1).'px','max-width:900px'=>'max-width:'.$tablet.'px','min-width:901px'=>'min-width:'.($tablet+1).'px']);
            $css.=preg_replace_callback('/(?<=\{|\})([^{}]+)\{/',static function($match)use($name){$selectors=[];foreach(explode(',',$match[1]) as $selector){$selector=trim($selector);if(str_starts_with($selector,'@')){return $match[0];}$selectors[]=str_contains($selector,'.dbs-document')?str_replace('.dbs-document','.dbs-document.'.$name,$selector):'.dbs-document.'.$name.' '.$selector;}return implode(',',$selectors).'{';},$template);
        }
        return ['css'=>Assets::inline_style($css,'design'),'class'=>$class,'inline'=>$inline];
    }
}