<?php
if(!defined('ABSPATH')) exit;

class WMF_Integrations {
    private static $instance=null;
    private static $hooked=false;
    private $option_name='_wmf_service_credentials';
    private $services=array();
    private $grouped_services=array();
    private $credentials=array();
    private $notice=array();
    public $action_update='wmf-service-update';
    public $integrations_action='wmf-integrations-update';

    public static function instance() {
        if(is_null(self::$instance)) self::$instance=new self();
        return self::$instance;
    }
    private function __construct() {
        $b=WMF_INT_DIR;
        $services=array(
            'recaptcha/class-service-recaptcha.php'            =>'WMF_Service_Recaptcha',
            'recaptchav3/class-service-recaptchav3.php'        =>'WMF_Service_RecaptchaV3',
            'mailchimp/class-service-mailchimp.php'            =>'WMF_Service_Mailchimp',
            'mailerlite/class-service-mailerlite.php'          =>'WMF_Service_MailerLite',
            'active-campaign/class-service-active-campaign.php'=>'WMF_Service_ActiveCampaign',
            'convertkit/class-service-convertkit.php'          =>'WMF_Service_ConvertKit',
            'stripe/class-service-stripe.php'                  =>'WMF_Service_Stripe',
            'paypal/class-service-paypal.php'                  =>'WMF_Service_PayPal',
            'zapier/class-service-zapier.php'                  =>'WMF_Service_Zapier',
            'google-analytics/class-service-google-analytics.php'=>'WMF_Service_Google_Analytics',
            'google-places/class-service-google-places.php'   =>'WMF_Service_Google_Places',
        );
        foreach($services as $file=>$cls) {
            require_once $b.'services/'.$file;
            $this->register_service($cls);
        }
    }
    public function hook() {
        if(self::$hooked) return; self::$hooked=true;
        add_action('wp_ajax_'.$this->action_update,      array($this,'ajax_service_update'));
        add_action('wp_ajax_'.$this->integrations_action,array($this,'ajax_integrations_update'));
        add_action('wmf_integrations_print_notices',     array($this,'print_notices'));
        $this->read_credentials();
        $this->configure_services();
    }
    public function register_service($cls) {
        $s=$cls instanceof WMF_Service?$cls:new $cls();
        $this->services[$s->id]=$s;
    }
    public function configure_services() {
        foreach($this->services as $s) {
            $s->set_credentials($this->credentials[$s->id]??array());
            $s->configure(); $s->load();
        }
    }
    public function read_credentials(){$this->credentials=get_option($this->option_name,array());}
    public function write_credentials(){
        $this->credentials=array_map(fn($s)=>$s->get_credentials(),$this->services);
        update_option($this->option_name,$this->credentials);
    }
    public function get_services(){return $this->services;}
    public function get_service($id){return $this->services[$id]??false;}
    public function get_service_group($group){
        // Neu aufbauen falls noch nicht geschehen oder leer
        if(empty($this->grouped_services)) {
            $this->grouped_services = array();
            foreach($this->services as $s) {
                $this->grouped_services[$s->group][] = $s;
            }
        }
        return $this->grouped_services[$group] ?? array();
    }
    
    public function reset_grouped_cache() {
        $this->grouped_services = array();
    }
    public function ajax_service_update() {
        if(!check_ajax_referer($this->action_update)||!current_user_can('manage_options')) wp_die();
        $services=(array)($_REQUEST['services']??array());
        $group=sanitize_text_field($_REQUEST['group']??'');
        ob_start();
        foreach($services as $sid) {
            if(!isset($this->services[$sid])) continue;
            $svc=$this->services[$sid];
            $def=$svc->get_credentials();
            $raw=$_REQUEST['credentials'][$sid]??array();
            $creds=array_map('sanitize_text_field',array_intersect_key(wp_parse_args($raw,$def),$def));
            $svc->set_credentials($creds,$raw);
            $this->write_credentials();
        }
        $this->notice=array('status'=>'success','message'=>'Änderungen gespeichert.');
        if($group==='antispam') require WMF_INT_DIR.'templates/admin-antispam-integrations.php';
        echo ob_get_clean(); die();
    }
    public function ajax_integrations_update() {
        if(!check_ajax_referer($this->integrations_action)||!current_user_can('manage_options')) wp_die();
        if(!isset($_REQUEST['service'],$_REQUEST['credentials'])) wp_die();
        $sid=sanitize_text_field($_REQUEST['service']);
        if(!isset($this->services[$sid])) wp_send_json_error();
        $svc=$this->services[$sid]; $def=$svc->get_credentials();
        $raw=$_REQUEST['credentials'][$sid]??array();
        $creds=array_map('sanitize_text_field',array_intersect_key(wp_parse_args($raw,$def),$def));
        $prev=$svc->get_credentials(); $svc->set_credentials($creds,$raw); $this->write_credentials();
        $this->notice=array('status'=>'success','message'=>'Änderungen gespeichert.');
        ob_start(); $svc->admin_widget($prev); echo ob_get_clean(); die();
    }
    public function print_notices() {
        if(empty($this->notice)) return;
        printf('<div class="notice notice-%s"><p>%s</p></div>',esc_attr($this->notice['status']),esc_html($this->notice['message']));
    }
}
function wmf_get_integrations(){return WMF_Integrations::instance();}