<?php
namespace ABeCe\Booking\Service;
use ABeCe\Booking\Repository\SettingsRepository;
/** Options validation and localized confirmation copy; never changes stored resource rules. */
final class BookingRulesService {
 public const DEFAULTS = ['max_daily_customer_bookings'=>4,'online_booking_cutoff_mode'=>'none','online_booking_cutoff_hours'=>null,'booking_contact_phone'=>'','confirmation_email_intro'=>[],'confirmation_email_outro'=>[]];
 public function __construct(private readonly SettingsRepository $settings) {}
 /** Stored overrides remain separate from the effective values edited by the client. */
 public function response(): array {
  $data=$this->get();$metadata=[];
  foreach(['confirmation_email_intro','confirmation_email_outro'] as $key){
   $custom=$data[$key];$effective=[];$defaults=[];$isCustom=[];$resolved=[];
   foreach(ConfirmationEmailDefaults::LOCALES as $locale){
    $defaults[$locale]=ConfirmationEmailDefaults::text($key,$locale);
    $isCustom[$locale]=isset($custom[$locale])&&trim($custom[$locale])!=='';
    $effective[$locale]=$isCustom[$locale]?$custom[$locale]:$defaults[$locale];
    $siteLocale=get_option('WPLANG')?:(defined('WPLANG')&&WPLANG?WPLANG:'en_US');
    $resolved[$locale]=$this->resolveEmailText($key,$locale,$siteLocale);
   }
   $metadata[$key]=['custom'=>(object)$custom,'defaults'=>(object)$defaults,'is_custom'=>(object)$isCustom,'resolved'=>(object)$resolved];
   $data[$key]=(object)$effective;
  }
  $data['confirmation_email_metadata']=$metadata;return $data;
 }
 public function get(): array { $data=[]; foreach(self::DEFAULTS as $key=>$default)$data[$key]=get_option('abece_booking_'.$key,$default); $data['max_daily_customer_bookings']=(int)$data['max_daily_customer_bookings'];$data['online_booking_cutoff_hours']=$data['online_booking_cutoff_hours']===null||$data['online_booking_cutoff_hours']===''?null:(int)$data['online_booking_cutoff_hours'];return $data; }
 public function save(array $input): array {
  BookingValidator::fields($input,[...array_keys(self::DEFAULTS),'reset_confirmation_email_locales']);
  $reset=array_key_exists('reset_confirmation_email_locales',$input)?$input['reset_confirmation_email_locales']:[];unset($input['reset_confirmation_email_locales']);
  if(!is_array($reset)||!array_is_list($reset)||array_filter($reset,static fn($locale)=>!is_string($locale)||!in_array($locale,ConfirmationEmailDefaults::LOCALES,true)))CatalogValidator::invalid('reset_confirmation_email_locales',__('Select a supported email language.','abece-booking'));
  $stored=$this->get();$data=array_replace($stored,$input);
  $data['max_daily_customer_bookings']=CatalogValidator::integer($data['max_daily_customer_bookings'],'max_daily_customer_bookings',1,1000);
  $data['online_booking_cutoff_mode']=CatalogValidator::choice($data['online_booking_cutoff_mode'],'online_booking_cutoff_mode',['none','hours_before','previous_day']);
  $data['online_booking_cutoff_hours']=CatalogValidator::integer($data['online_booking_cutoff_hours'],'online_booking_cutoff_hours',1,8760,true);
  if($data['online_booking_cutoff_mode']==='hours_before'&&$data['online_booking_cutoff_hours']===null)CatalogValidator::invalid('online_booking_cutoff_hours',__('Enter the number of hours before the booking starts.','abece-booking'));
  if(!is_string($data['booking_contact_phone']))CatalogValidator::invalid('booking_contact_phone',__('A text value is required.','abece-booking'));
  $data['booking_contact_phone']=sanitize_text_field($data['booking_contact_phone']);if(mb_strlen($data['booking_contact_phone'])>60||($data['booking_contact_phone']!==''&&!preg_match('/^[+0-9().\s-]+$/uD',$data['booking_contact_phone'])))CatalogValidator::invalid('booking_contact_phone',__('Enter a valid contact phone number.','abece-booking'));
  foreach(['confirmation_email_intro','confirmation_email_outro'] as $key){
   if(!is_array($data[$key])||($data[$key]!==[]&&array_is_list($data[$key])))CatalogValidator::invalid($key,__('Provide email texts by locale.','abece-booking'));
   foreach($data[$key] as $locale=>$text){if(!is_string($locale)||($locale!=='uk'&&!preg_match('/^[a-z]{2,3}_[A-Z]{2}$/D',$locale))||!is_string($text)||mb_strlen($text)>5000)CatalogValidator::invalid($key,__('Use valid locales and texts of at most 5000 characters.','abece-booking'));
    // Preserve untouched existing text byte-for-byte, including surrounding line breaks.
    if(!array_key_exists($locale,$stored[$key])||$text!==$stored[$key][$locale])$data[$key][$locale]=sanitize_textarea_field($text);
   }
  }
  foreach($reset as $locale)foreach(['confirmation_email_intro','confirmation_email_outro'] as $key)unset($data[$key][$locale]);
  $this->settings->save($data);return $this->get();
 }
 public function emailText(string $key,string $userLocale,string $siteLocale): string {
  return $this->resolveEmailText($key,$userLocale,$siteLocale)['value'];
 }
 /** Actual notification value, including the unchanged site-custom fallback. */
 public function resolveEmailText(string $key,string $userLocale,string $siteLocale): array {
  $texts=$this->get()[$key];$requested=\ABeCe\Booking\Support\LocaleContext::language($userLocale);$site=\ABeCe\Booking\Support\LocaleContext::language($siteLocale);
  $custom=function(array $locales)use($texts):?array{foreach(array_unique(array_filter($locales)) as $locale){$text=(string)($texts[$locale]??'');if(trim($text)!=='')return ['value'=>$text,'is_custom'=>true,'locale'=>$locale];}return null;};
  $value=$custom([$userLocale,$requested]);if($value)return $value;
  // Preserve en_US/en_GB same-language site-custom fallback without injecting a foreign language.
  if($requested&&$site&&explode('_',$requested)[0]===explode('_',$site)[0]){$value=$custom([$siteLocale,$site]);if($value)return $value;}
  if($requested)return ['value'=>ConfirmationEmailDefaults::text($key,$requested),'is_custom'=>false,'locale'=>$requested];
  $value=$custom([$siteLocale,$site]);if($value)return $value;
  $locale=$site??'en_US';return ['value'=>ConfirmationEmailDefaults::text($key,$locale),'is_custom'=>false,'locale'=>$locale];
 }
}