<?php
/**
 * Trait AIJE_Options
 * Options, Defaults, Sanitize, Score-Gewichtung, SEO-Plugin-Erkennung
 */

if ( ! defined( 'ABSPATH' ) ) { exit; }

trait AIJE_Options {

    public static function defaults() {
        return array(
            'enabled_post_types'     => array( 'post', 'page' ),
            'enable_schema'          => 0,
            'minify'                 => 0,
            'acf_include'            => 1,
            'cron_enabled'           => 0,
            'cron_frequency'         => 'daily',
            'ping_enabled'           => 1,
            'ping_urls'              => "# Beispiele (Platzhalter anpassen)\nhttps://webhook.site/your-uuid\n",
            'ping_events'            => array( 'publish', 'update' ),
            'ping_secret'            => '',
            'ping_timeout'           => 5,
            'ping_retry'             => 1,
            'openai_prompt'          => 'Analysiere den folgenden WordPress Beitrag. Antworte ausschließlich als JSON mit overall_score, issues[], suggested_headings[], faq[].',
            'score_preset'           => 'standard',
            'score_weight_content'   => 35,
            'score_weight_eeat'      => 30,
            'score_weight_technical' => 20,
            'score_weight_linking'   => 15,
            'seo_plugin'             => 'auto',
            'remove_category_base'   => 0,
            'gtm_id'                 => '',
            'ga4_id'                 => '',
            'gsc_verify'             => '',
            'meta_pixel'             => '',
            'gsc_client_id'          => '',
            'gsc_client_secret'      => '',
        );
    }

    private function get_opts() {
        $o = get_option( self::OPT_KEY, array() );
        if ( ! is_array( $o ) ) { $o = array(); }
        $defaults = self::defaults();
        foreach ( $defaults as $k => $v ) {
            if ( ! isset( $o[ $k ] ) ) { $o[ $k ] = $v; }
        }
        $o['enabled_post_types'] = array_values( array_filter( array_map( 'sanitize_key', (array) $o['enabled_post_types'] ) ) );
        $o['enable_schema']      = ! empty( $o['enable_schema'] ) ? 1 : 0;
        $o['minify']             = ! empty( $o['minify'] ) ? 1 : 0;
        $o['acf_include']        = ! empty( $o['acf_include'] ) ? 1 : 0;
        $o['cron_enabled']       = ! empty( $o['cron_enabled'] ) ? 1 : 0;
        $o['cron_frequency']     = in_array( $o['cron_frequency'], array( 'daily', 'weekly' ), true ) ? $o['cron_frequency'] : 'daily';
        $o['ping_enabled']       = ! empty( $o['ping_enabled'] ) ? 1 : 0;
        $o['ping_urls']          = is_string( $o['ping_urls'] ) ? $o['ping_urls'] : '';
        $o['ping_secret']        = is_string( $o['ping_secret'] ) ? $o['ping_secret'] : '';
        $o['ping_timeout']       = max( 2, (int) $o['ping_timeout'] );
        $o['ping_retry']         = ! empty( $o['ping_retry'] ) ? 1 : 0;
        if ( ! isset( $o['openai_api_key'] ) ) { $o['openai_api_key'] = ''; }
        $valid_presets     = array( 'ymyl', 'standard', 'ecommerce', 'custom' );
        $o['score_preset'] = in_array( $o['score_preset'] ?? 'standard', $valid_presets, true ) ? $o['score_preset'] : 'standard';
        $o['score_weight_content']   = max( 5, (int) ( $o['score_weight_content']   ?? 35 ) );
        $o['score_weight_eeat']      = max( 5, (int) ( $o['score_weight_eeat']      ?? 30 ) );
        $o['score_weight_technical'] = max( 5, (int) ( $o['score_weight_technical'] ?? 20 ) );
        $o['score_weight_linking']   = max( 5, (int) ( $o['score_weight_linking']   ?? 15 ) );
        $valid_seo        = array( 'auto', 'yoast', 'rankmath', 'aioseo', 'own' );
        $o['seo_plugin']  = in_array( $o['seo_plugin'] ?? 'auto', $valid_seo, true ) ? $o['seo_plugin'] : 'auto';
        return $o;
    }

    public function get_opts_public() { return $this->get_opts(); }

    public static function get_score_weights( $o = array() ) {
        $presets = array(
            'ymyl'      => array( 'content' => 30, 'eeat' => 40, 'technical' => 20, 'linking' => 10 ),
            'standard'  => array( 'content' => 35, 'eeat' => 30, 'technical' => 20, 'linking' => 15 ),
            'ecommerce' => array( 'content' => 30, 'eeat' => 20, 'technical' => 35, 'linking' => 15 ),
        );
        $preset = isset( $o['score_preset'] ) ? $o['score_preset'] : 'standard';
        if ( $preset !== 'custom' ) {
            return $presets[ $preset ] ?? $presets['standard'];
        }
        $w = array(
            'content'   => max( 5, (int) ( $o['score_weight_content']   ?? 35 ) ),
            'eeat'      => max( 5, (int) ( $o['score_weight_eeat']      ?? 30 ) ),
            'technical' => max( 5, (int) ( $o['score_weight_technical'] ?? 20 ) ),
            'linking'   => max( 5, (int) ( $o['score_weight_linking']   ?? 15 ) ),
        );
        $sum = array_sum( $w );
        if ( $sum !== 100 ) {
            foreach ( $w as $k => $v ) { $w[ $k ] = (int) round( $v * 100 / $sum ); }
            $w['content'] += ( 100 - array_sum( $w ) );
        }
        return $w;
    }

    public function get_active_seo_plugin() {
        $o      = $this->get_opts();
        $choice = $o['seo_plugin'] ?? 'auto';
        if ( $choice !== 'auto' ) { return $choice; }
        if ( defined( 'WPSEO_VERSION' ) )     { return 'yoast'; }
        if ( defined( 'RANK_MATH_VERSION' ) ) { return 'rankmath'; }
        if ( defined( 'AIOSEO_VERSION' ) )    { return 'aioseo'; }
        return 'own';
    }

    public function register_settings() {
        register_setting( self::OPT_KEY, self::OPT_KEY, array( $this, 'sanitize_settings' ) );
        register_setting( 'aije_ai_settings', 'aije_openai_api_key' );
    }

    public function sanitize_settings( $in ) {
        $d = self::defaults();
        $o = array();

        $o['enabled_post_types'] = isset( $in['enabled_post_types'] )
            ? array_values( array_map( 'sanitize_key', (array) $in['enabled_post_types'] ) )
            : $d['enabled_post_types'];

        $o['enable_schema']  = ! empty( $in['enable_schema'] ) ? 1 : 0;
        $o['minify']         = ! empty( $in['minify'] ) ? 1 : 0;
        $o['acf_include']    = ! empty( $in['acf_include'] ) ? 1 : 0;
        $o['cron_enabled']   = ! empty( $in['cron_enabled'] ) ? 1 : 0;
        $o['cron_frequency'] = isset( $in['cron_frequency'] ) ? sanitize_key( $in['cron_frequency'] ) : 'daily';
        $o['ping_enabled']   = ! empty( $in['ping_enabled'] ) ? 1 : 0;
        $o['ping_urls']      = isset( $in['ping_urls'] ) ? (string) $in['ping_urls'] : $d['ping_urls'];

        $events = array();
        if ( ! empty( $in['ping_events'] ) && is_array( $in['ping_events'] ) ) {
            foreach ( $in['ping_events'] as $e ) {
                $e = sanitize_key( $e );
                if ( in_array( $e, array( 'publish', 'update' ), true ) ) { $events[] = $e; }
            }
        }
        $o['ping_events']  = array_values( array_unique( $events ) );
        $o['ping_secret']  = isset( $in['ping_secret'] ) ? (string) $in['ping_secret'] : '';
        $o['ping_timeout'] = isset( $in['ping_timeout'] ) ? max( 2, (int) $in['ping_timeout'] ) : 5;
        $o['ping_retry']   = ! empty( $in['ping_retry'] ) ? 1 : 0;

        $o['openai_api_key'] = isset( $in['openai_api_key'] ) ? sanitize_text_field( $in['openai_api_key'] ) : '';
        $o['openai_prompt']  = isset( $in['openai_prompt'] ) ? trim( $in['openai_prompt'] ) : $d['openai_prompt'];

        $valid_presets     = array( 'ymyl', 'standard', 'ecommerce', 'custom' );
        $o['score_preset'] = ( isset( $in['score_preset'] ) && in_array( $in['score_preset'], $valid_presets, true ) )
            ? $in['score_preset'] : 'standard';
        $o['score_weight_content']   = isset( $in['score_weight_content'] )   ? max( 5, (int) $in['score_weight_content'] )   : 35;
        $o['score_weight_eeat']      = isset( $in['score_weight_eeat'] )      ? max( 5, (int) $in['score_weight_eeat'] )      : 30;
        $o['score_weight_technical'] = isset( $in['score_weight_technical'] ) ? max( 5, (int) $in['score_weight_technical'] ) : 20;
        $o['score_weight_linking']   = isset( $in['score_weight_linking'] )   ? max( 5, (int) $in['score_weight_linking'] )   : 15;

        $valid_seo   = array( 'auto', 'yoast', 'rankmath', 'aioseo', 'own' );
        $old_opts    = get_option( self::OPT_KEY, array() );
        $old_seo     = is_array( $old_opts ) && isset( $old_opts['seo_plugin'] ) ? $old_opts['seo_plugin'] : 'auto';
        $o['seo_plugin'] = ( isset( $in['seo_plugin'] ) && in_array( $in['seo_plugin'], $valid_seo, true ) )
            ? $in['seo_plugin'] : $old_seo;

        $o['remove_category_base'] = ! empty( $in['remove_category_base'] ) ? 1 : 0;

        $this->maybe_reschedule_export( $o['cron_enabled'], $o['cron_frequency'] );
        $this->ensure_ping_cron();

        $o['gtm_id']          = sanitize_text_field( $in['gtm_id']          ?? '' );
        $o['ga4_id']          = sanitize_text_field( $in['ga4_id']          ?? '' );
        $o['gsc_verify']      = sanitize_text_field( $in['gsc_verify']      ?? '' );
        $o['meta_pixel']      = sanitize_text_field( $in['meta_pixel']      ?? '' );
        $o['gsc_client_id']   = sanitize_text_field( $in['gsc_client_id']   ?? '' );
        $o['gsc_client_secret'] = sanitize_text_field( $in['gsc_client_secret'] ?? '' );

        return $o;
    }

    /* ===== Lizenz / Trial ===== */

    public static function trial_is_active() {
        $ts = (int) get_option( 'aije_activated_at', 0 );
        if ( ! $ts ) { return true; }
        return ( time() <= $ts + self::TRIAL_DAYS * DAY_IN_SECONDS );
    }

    public static function trial_end_timestamp() {
        $ts = (int) get_option( 'aije_activated_at', 0 );
        if ( ! $ts ) { return 0; }
        return $ts + self::TRIAL_DAYS * DAY_IN_SECONDS;
    }

    public static function is_pro_active() { return true; }

    private static function get_normalized_host() {
        $home = function_exists( 'home_url' ) ? home_url() : '';
        $site = function_exists( 'site_url' ) ? site_url() : '';
        $url  = $home ? $home : $site;
        $host = '';
        if ( $url ) {
            $parsed = @parse_url( $url );
            if ( is_array( $parsed ) && ! empty( $parsed['host'] ) ) {
                $host = strtolower( $parsed['host'] );
            }
        }
        if ( $host !== '' && strpos( $host, 'www.' ) === 0 ) { $host = substr( $host, 4 ); }
        return $host;
    }

    private static function base_domain( $host ) {
        if ( ! $host ) { return ''; }
        $parts = explode( '.', $host );
        $n     = count( $parts );
        if ( $n >= 2 ) { return $parts[ $n - 2 ] . '.' . $parts[ $n - 1 ]; }
        return $host;
    }

    private static function code_from_domain( $domain ) {
        $domain = strtolower( (string) $domain );
        if ( $domain === '' ) { return ''; }
        return strtoupper( substr( hash( 'sha256', $domain ), 0, 16 ) );
    }

    public static function license_is_valid( $code = null ) {
        $entered = strtoupper( trim( (string) ( $code ? $code : get_option( self::OPT_LICENSE, '' ) ) ) );
        if ( $entered === '' ) { return false; }
        $host  = self::get_normalized_host();
        if ( $host === '' ) { return false; }
        $code1 = self::code_from_domain( $host );
        if ( $code1 && hash_equals( $code1, $entered ) ) { return true; }
        $base  = self::base_domain( $host );
        if ( $base && $base !== $host ) {
            $code2 = self::code_from_domain( $base );
            if ( $code2 && hash_equals( $code2, $entered ) ) { return true; }
        }
        return false;
    }

    public static function validate_license_remote( $license_key ) {
        if ( empty( $license_key ) ) { return array( 'valid' => false, 'error' => 'Kein Lizenzcode angegeben.' ); }
        $host     = self::get_normalized_host();
        $response = wp_remote_post(
            'https://www.muench-media.com/aije-license/validate',
            array(
                'timeout' => 10,
                'headers' => array( 'Content-Type' => 'application/json' ),
                'body'    => wp_json_encode( array( 'license_key' => $license_key, 'domain' => $host ) ),
            )
        );
        if ( is_wp_error( $response ) ) {
            return array( 'valid' => false, 'error' => 'Server nicht erreichbar: ' . $response->get_error_message() );
        }
        $body = json_decode( wp_remote_retrieve_body( $response ), true );
        return is_array( $body ) ? $body : array( 'valid' => false, 'error' => 'Ungültige Server-Antwort.' );
    }
}