/**
 * Post edit screen: "Search a new image" button.
 *
 * The AI query plus the image download can take a few seconds, so the button
 * reports progress and updates the cover preview when it finishes.
 */
(function ($) {
    'use strict';

    $(document).on('click', '#aap-refresh-image-btn', function (e) {
        e.preventDefault();

        var $btn      = $(this);
        var $feedback = $('#aap-refresh-image-feedback');
        var i18n      = (window.aapEditor && aapEditor.i18n) || {};

        if ($btn.data('busy')) return;
        $btn.data('busy', true).prop('disabled', true);

        $feedback.removeClass('is-error is-success').addClass('is-working').text(i18n.working || '...');

        $.post(aapEditor.ajaxurl, {
            action:  'aap_refresh_image',
            nonce:   $btn.data('nonce'),
            post_id: $btn.data('post')
        })
            .done(function (res) {
                if (res && res.success && res.data && res.data.updated) {
                    $feedback.removeClass('is-working').addClass('is-success').text(i18n.success || 'OK');
                    applyThumbnail(res.data);
                } else if (res && res.success) {
                    $feedback.removeClass('is-working').addClass('is-error').text(i18n.no_image || 'No image found.');
                } else {
                    $feedback.removeClass('is-working').addClass('is-error').text(i18n.error || 'Error.');
                }
            })
            .fail(function () {
                $feedback.removeClass('is-working').addClass('is-error').text(i18n.error || 'Error.');
            })
            .always(function () {
                $btn.data('busy', false).prop('disabled', false);
            });
    });

    /**
     * Swap the preview inside the core "Featured image" box without reloading.
     */
    function applyThumbnail(data) {
        if (!data.thumbnail) return;

        var $img = $('#postimagediv #postimagediv-thumbnail img, #postimagediv .inside img').first();

        if ($img.length) {
            $img.attr('src', data.thumbnail);
        }
    }
}(jQuery));