/* ======================================================
   МЕТАБОКС "ОТВЕТ ЭКСПЕРТА" + ДАТА
====================================================== */

add_action('add_meta_boxes', function () {
    add_meta_box(
        'accepted_answer_box',
        'Ответ эксперта',
        'render_accepted_answer_box',
        'question',
        'normal',
        'high'
    );
});

function render_accepted_answer_box($post) {
    $text = get_post_meta($post->ID, 'accepted_answer_text', true);
    $date = get_post_meta($post->ID, 'accepted_answer_date', true);

    echo '<p><strong>Дата ответа:</strong></p>';
    echo '<input type="datetime-local" name="accepted_answer_date" value="'. esc_attr($date) .'" style="width:260px;margin-bottom:15px;">';

    echo '<p><strong>Текст ответа:</strong></p>';
    echo '<textarea style="width:100%;min-height:220px;" name="accepted_answer_text">'. esc_textarea($text) .'</textarea>';
}

add_action('save_post_question', function ($post_id) {

    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) return;
    if (!current_user_can('edit_post', $post_id)) return;

    if (isset($_POST['accepted_answer_text'])) {
        update_post_meta($post_id, 'accepted_answer_text', $_POST['accepted_answer_text']);
    }

    if (isset($_POST['accepted_answer_date']) && !empty($_POST['accepted_answer_date'])) {
        update_post_meta($post_id, 'accepted_answer_date', $_POST['accepted_answer_date']);
    }
});


/* ======================================================
   QAPage SCHEMA
====================================================== */

function add_qapage_schema_to_questions() {

    if (!is_singular('question')) return;

    global $post;

    $lawyers_page_ids = [24, 988];

    $question_title = get_the_title($post->ID);
    $question_text  = wp_strip_all_tags(apply_filters('the_content', $post->post_content));
    $question_url   = get_permalink($post->ID);
    $question_date_created = get_the_time('c', $post->ID);

    $question_author_id   = $post->post_author;
    $question_author_name = get_the_author_meta('display_name', $question_author_id) ?: 'Гость';

    $final_question_author_url = in_array($question_author_id, $lawyers_page_ids)
        ? 'https://zakon.kg/lawyers/'
        : 'https://zakon.kg/account/?user=' . $question_author_id;

    /* === РЕДАКЦИОННЫЙ ОТВЕТ === */

    $editor_answer = get_post_meta($post->ID, 'accepted_answer_text', true);
    $editor_date   = get_post_meta($post->ID, 'accepted_answer_date', true);

    $accepted_answer = null;

    if (!empty($editor_answer)) {

        $editor_date_iso = $editor_date
            ? date('c', strtotime($editor_date))
            : $question_date_created;

        $accepted_answer = [
            "@type"       => "Answer",
            "text"        => wp_strip_all_tags($editor_answer),
            "dateCreated" => $editor_date_iso,
            "author"      => [
                "@type" => "Organization",
                "name"  => "Zakon.kg",
                "url"   => "https://zakon.kg/lawyers/"
            ],
            "url" => $question_url . "#accepted-answer"
        ];
    }

    /* === КОММЕНТАРИИ === */

    $comments = get_comments([
        'post_id' => $post->ID,
        'status'  => 'approve',
        'orderby' => 'comment_date_gmt',
        'order'   => 'ASC'
    ]);

    $suggested_answers = [];

    foreach ($comments as $comment) {

        $comment_author_id   = $comment->user_id;
        $comment_author_name = $comment->comment_author ?: 'Гость';
        $comment_permalink   = get_comment_link($comment->comment_ID);

        $formatted_comment_date = get_comment_date('c', $comment->comment_ID);

        $final_comment_author_url = in_array($comment_author_id, $lawyers_page_ids)
            ? 'https://zakon.kg/lawyers/'
            : (!empty(get_the_author_meta('user_url', $comment_author_id))
                ? get_the_author_meta('user_url', $comment_author_id)
                : 'https://zakon.kg/account/?user=' . $comment_author_id);

        $answer_data = [
            "@type"       => "Answer",
            "itemid"      => $comment_permalink,
            "text"        => wp_strip_all_tags($comment->comment_content),
            "dateCreated" => $formatted_comment_date,
            "author"      => [
                "@type" => "Person",
                "name"  => $comment_author_name,
                "url"   => $final_comment_author_url
            ],
            "url" => $comment_permalink
        ];

        $suggested_answers[] = $answer_data;
    }

    /* === SCHEMA === */

    $schema_markup = [
        "@context" => "https://schema.org",
        "@type"    => "QAPage",
        "mainEntity" => [
            "@type"       => "Question",
            "name"        => $question_title,
            "text"        => $question_text,
            "dateCreated" => $question_date_created,
            "url"         => $question_url,
            "author"      => [
                "@type" => "Person",
                "name"  => $question_author_name,
                "url"   => $final_question_author_url
            ]
        ]
    ];

    if ($accepted_answer) {
        $schema_markup['mainEntity']['acceptedAnswer'] = $accepted_answer;
    }

    if (!empty($suggested_answers)) {
        $schema_markup['mainEntity']['suggestedAnswer'] = $suggested_answers;
    }

    echo '<script type="application/ld+json">' .
        json_encode($schema_markup, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) .
        '</script>';
}

add_action('wp_head', 'add_qapage_schema_to_questions');


/* === Отключаем Yoast Schema на вопросах === */

add_filter('wpseo_json_ld_output', function($data){
    if (is_singular('question')) return false;
    return $data;
}, 10);