/**
* Forex In World – EA & Indicators Gallery
* Add with the Code Snippets plugin.
* Shortcode: [fi_ea_gallery]
*/
add_shortcode(‘fi_ea_gallery’, function () {
$cats = [
    'mt4ea' => 'MT4 EA (EXPERT ADVISOR)',
    'mt4indicators' => 'MT4 INDICATORS',
    'mt5ea' => 'MT5 EA (EXPERT ADVISOR)',
    'mt5indicators' => 'MT5 INDICATORS',
];

$active = isset($_GET['fi_cat'])
    ? sanitize_key(wp_unslash($_GET['fi_cat']))
    : 'mt4ea';

if (!isset($cats[$active])) {
    $active = 'mt4ea';
}

$search = isset($_GET['fi_search'])
    ? sanitize_text_field(wp_unslash($_GET['fi_search']))
    : '';

$page = isset($_GET['fi_page'])
    ? max(1, absint($_GET['fi_page']))
    : 1;

// Search across all four categories.
$query_args = [
    'post_type'           => 'post',
    'post_status'         => 'publish',
    'posts_per_page'      => 10,
    'paged'               => $page,
    'ignore_sticky_posts' => true,
    'orderby'             => 'date',
    'order'               => 'DESC',
];

if ($search !== '') {
    $query_args['category_name'] = implode(',', array_keys($cats));
    $query_args['s'] = $search;
} else {
    $query_args['category_name'] = $active;
}

$products = new WP_Query($query_args);

$base_url = get_permalink(get_queried_object_id());
if (!$base_url) {
    $base_url = home_url('/');
}

$share_url = esc_url($base_url);

ob_start();
?>

<div class="fi-gallery"
     data-share-url="<?php echo esc_attr($share_url); ?>">

    <div class="fi-categories">
        <?php foreach ($cats as $slug => $label) :
            $url = add_query_arg(
                ['fi_cat' => $slug],
                $base_url
            );
        ?>
            <a class="fi-category <?php
                echo $active === $slug && $search === ''
                    ? 'is-active' : '';
            ?>"
               href="<?php echo esc_url($url); ?>">
                <?php echo esc_html($label); ?>
            </a>
        <?php endforeach; ?>
    </div>

    <form class="fi-search" method="get"
          action="<?php echo esc_url($base_url); ?>">
        <input type="hidden" name="fi_cat"
               value="<?php echo esc_attr($active); ?>">

        <input type="search"
               name="fi_search"
               value="<?php echo esc_attr($search); ?>"
               placeholder="Search EA or indicator..."
               aria-label="Search all EA and indicator products">

        <button type="submit">Search</button>

        <?php if ($search !== '') : ?>
            <a class="fi-clear"
               href="<?php echo esc_url(
                   add_query_arg('fi_cat', $active, $base_url)
               ); ?>">Clear</a>
        <?php endif; ?>
    </form>

    <div class="fi-share-row">
        <button type="button" class="fi-share">
            &#x2197; Share Gallery
        </button>
        <button type="button" class="fi-copy">
            Copy Link
        </button>
        <span class="fi-share-status"
              aria-live="polite"></span>
    </div>

    <div class="fi-grid">
        <?php if ($products->have_posts()) : ?>
            <?php while ($products->have_posts()) :
                $products->the_post(); ?>
                <a class="fi-product"
                   href="<?php the_permalink(); ?>">

                    <div class="fi-product-image">
                        <?php if (has_post_thumbnail()) : ?>
                            <?php the_post_thumbnail(
                                'medium',
                                [
                                    'loading' => 'lazy',
                                    'alt' => esc_attr(
                                        get_the_title()
                                    ),
                                ]
                            ); ?>
                        <?php else : ?>
                            <span class="fi-no-image">
                                Image unavailable
                            </span>
                        <?php endif; ?>
                    </div>

                    <div class="fi-product-title">
                        <?php the_title(); ?>
                    </div>
                </a>
            <?php endwhile; ?>
        <?php else : ?>
            <p class="fi-empty">
                No products found. Try another search.
            </p>
        <?php endif; ?>
    </div>

    <?php
    $total_pages = (int) $products->max_num_pages;

    if ($total_pages > 1) :
        $pagination_args = [
            'fi_cat' => $active,
        ];

        if ($search !== '') {
            $pagination_args['fi_search'] = $search;
        }

        $pagination_base = add_query_arg(
            array_merge($pagination_args, ['fi_page' => 999999]),
            $base_url
        );

        $links = paginate_links([
            'base'      => str_replace(
                '999999',
                '%#%',
                esc_url($pagination_base)
            ),
            'format'    => '',
            'current'   => $page,
            'total'     => $total_pages,
            'mid_size'  => 2,
            'end_size'  => 1,
            'prev_text' => '‹',
            'next_text' => '›',
            'type'      => 'list',
        ]);

        if ($links) {
            echo '<nav class="fi-pagination" aria-label="Product pages">';
            echo wp_kses_post($links);
            echo '</nav>';
        }
    endif;

    wp_reset_postdata();
    ?>
</div>

<style>
.fi-gallery {
    width: 100%;
    margin: 20px auto;
    color: #202833;
}

.fi-categories {
    display: flex;
    flex-wrap: nowrap;
    gap: 6px;
    overflow-x: auto;
    padding: 3px 0 10px;
    scrollbar-width: thin;
}

.fi-category {
    flex: 1 0 0;
    min-width: 0;
    min-height: 58px;
    padding: 8px 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: #202833;
    color: #fff !important;
    border-radius: 6px;
    text-decoration: none !important;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.35;
    overflow-wrap: anywhere;
    transition: background .2s;
}

.fi-category:hover,
.fi-category.is-active {
    background: #1677ff;
    color: #fff !important;
}

.fi-search {
    display: flex;
    gap: 8px;
    margin: 12px 0;
    align-items: stretch;
}

.fi-search input[type="search"] {
    flex: 1;
    min-width: 0;
    padding: 12px;
    border: 1px solid #d4d9e0;
    border-radius: 6px;
    font-size: 14px;
}

.fi-search button,
.fi-share,
.fi-copy {
    border: 0;
    border-radius: 6px;
    padding: 11px 14px;
    background: #1677ff;
    color: #fff;
    font-weight: 700;
    cursor: pointer;
}

.fi-clear {
    align-self: center;
    font-size: 13px;
}

.fi-share-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin: 10px 0 18px;
}

.fi-copy {
    background: #202833;
}

.fi-share-status {
    font-size: 12px;
}

.fi-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.fi-product {
    display: block;
    min-width: 0;
    color: inherit !important;
    text-decoration: none !important;
    border: 1px solid #e1e5ea;
    border-radius: 8px;
    padding: 9px;
    overflow: hidden;
}

.fi-product-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #f3f5f7;
    border-radius: 5px;
}

.fi-product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.fi-no-image {
    font-size: 12px;
    color: #777;
}

.fi-product-title {
    margin-top: 10px;
    font-size: 14px;
    line-height: 1.5;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.fi-empty {
    grid-column: 1 / -1;
}

.fi-pagination {
    margin: 25px 0;
    overflow-x: auto;
}

.fi-pagination ul {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.fi-pagination li a,
.fi-pagination li span {
    display: block;
    min-width: 38px;
    padding: 9px 10px;
    text-align: center;
    border: 1px solid #d8dee7;
    border-radius: 5px;
    text-decoration: none;
}

.fi-pagination .current {
    background: #1677ff;
    color: #fff;
    border-color: #1677ff;
}

.fi-pagination .dots {
    border: 0;
}

@media (max-width: 480px) {
    .fi-category {
        flex: 0 0 145px;
        min-height: 54px;
    }

    .fi-grid {
        gap: 10px;
    }

    .fi-product {
        padding: 6px;
    }

    .fi-product-title {
        font-size: 12px;
    }

    .fi-search button {
        padding: 10px;
    }
}
</style>

<script>
(function () {
    document.querySelectorAll('.fi-gallery').forEach(function (gallery) {
        if (gallery.dataset.shareReady) return;
        gallery.dataset.shareReady = '1';

        const shareUrl = gallery.dataset.shareUrl;
        const shareButton = gallery.querySelector('.fi-share');
        const copyButton = gallery.querySelector('.fi-copy');
        const status = gallery.querySelector('.fi-share-status');

        async function copyLink() {
            try {
                if (navigator.clipboard && window.isSecureContext) {
                    await navigator.clipboard.writeText(shareUrl);
                } else {
                    const field = document.createElement('textarea');
                    field.value = shareUrl;
                    field.style.position = 'fixed';
                    field.style.opacity = '0';
                    document.body.appendChild(field);
                    field.select();

                    const copied = document.execCommand('copy');
                    field.remove();

                    if (!copied) throw new Error('Copy failed');
                }

                status.textContent = 'Gallery link copied!';
            } catch (error) {
                window.prompt('Copy gallery link:', shareUrl);
            }
        }

        copyButton.addEventListener('click', copyLink);

        shareButton.addEventListener('click', async function () {
            if (navigator.share) {
                try {
                    await navigator.share({
                        title: 'Forex In World EA Gallery',
                        text: 'Explore our Expert Advisors and Indicators.',
                        url: shareUrl
                    });
                } catch (error) {
                    if (error.name !== 'AbortError') {
                        await copyLink();
                    }
                }
            } else {
                await copyLink();
            }
        });
    });
})();
</script>

<?php
return ob_get_clean();
});