(function() {
    let offset = 0;
    const limit = 6;
    let isLoading = false;
    let hasMore = true;
    let searchDebounceTimer = null;

    function fetchContestants(reset) {
        if (isLoading && !reset) return;
        if (!hasMore && !reset) return;
        isLoading = true;

        const searchEl = document.getElementById("search_cont");
        const getIdEl = document.getElementById("get_id");
        const searchValue = searchEl ? searchEl.value.trim() : '';
        const getIds = getIdEl ? getIdEl.value.trim() : '';

        if (reset) {
            offset = 0;
            hasMore = true;
            $('#loader1').show();
        } else {
            $('#loader').show();
        }

        $.ajax({
            url: 'video_data_load.php',
            type: 'POST',
            data: {
                offset: offset,
                search_cont: searchValue,
                get_id: getIds
            },
            dataType: 'json',
            success: function(data) {
                isLoading = false;
                $('#loader, #loader1').hide();

                if (reset) {
                    $('#items-container').empty();
                }

                if (Array.isArray(data) && data.length > 0) {
                    $('#items-container').append(data.join(''));
                    offset += data.length;
                    if (data.length < limit || getIds !== '') {
                        hasMore = false;
                        $('#load-more').prop('disabled', true).text('No more Videos to load');
                    } else {
                        hasMore = true;
                        $('#load-more').prop('disabled', false).text('Load More');
                    }
                } else {
                    hasMore = false;
                    $('#load-more').prop('disabled', true).text('No more Videos to load');
                }

                if (typeof checkAndHideVoteButton === 'function') {
                    checkAndHideVoteButton();
                }
            },
            error: function(xhr, status, error) {
                isLoading = false;
                $('#loader, #loader1').hide();
                console.error('Error loading videos: ' + error);
            }
        });
    }

    $(document).ready(function() {
        const loadMoreBtn = document.getElementById('load-more');
        $('#load-more').off('click').on('click', function() {
            fetchContestants(false);
        });

        fetchContestants(false);

        // Pre-fetch next batch automatically as user scrolls near the Load More button
        if (loadMoreBtn && 'IntersectionObserver' in window) {
            const observer = new IntersectionObserver(function(entries) {
                entries.forEach(function(entry) {
                    if (entry.isIntersecting && !isLoading && hasMore) {
                        fetchContestants(false);
                    }
                });
            }, { rootMargin: '450px 0px' });
            observer.observe(loadMoreBtn);
        }
    });

    window.search_function = function() {
        clearTimeout(searchDebounceTimer);
        searchDebounceTimer = setTimeout(function() {
            fetchContestants(true);
        }, 250);
    };
})();

function shareViaFacebook(videoUrl) {
    var facebookLink = 'https://www.facebook.com/sharer/sharer.php?u=' + encodeURIComponent(videoUrl);
    window.open(facebookLink, '_blank');
}

function shareViaWhatsApp(videoUrl) {
    var message = " Please vote for me as a singer in Aikat Mozo Tavo and ask others to vote as well!!!";
    var whatsappLink = 'whatsapp://send?text=' + encodeURIComponent(videoUrl + '\n\n' + message);
    window.open(whatsappLink, '_blank');
}

function copyLink(videoUrl) {
    var message = " Please vote for me as a singer in Aikat Mozo Tavo and ask others to vote as well!!!";
    var textField = document.createElement('textarea');
    textField.innerText = videoUrl + '\n\n' + message;
    document.body.appendChild(textField);
    textField.select();
    document.execCommand('copy');
    textField.remove();

    Swal.fire({
        title: 'Link Copied',
        text: 'The link with message has been copied to your clipboard.',
        icon: 'success',
        showConfirmButton: false,
        timer: 1500
    });
}

function shareViaInstagramDM(videoUrl) {
    var message = "Please vote for me as a singer in Aikat Mozo Tavo and encourage others to vote as well!";

    var textField = document.createElement('textarea');
    textField.innerText = videoUrl + '\n\n' + message;
    document.body.appendChild(textField);
    textField.select();
    document.execCommand('copy');
    textField.remove();

    Swal.fire({
        title: 'Link Copied',
        text: 'The link with your message has been copied to your clipboard. Paste and share it in your Instagram DM.',
        icon: 'success',
        confirmButtonText: 'OK'
    }).then((result) => {
        if (result.isConfirmed) {
            var instagramLink = 'https://www.instagram.com/direct/new/?text=' + encodeURIComponent(message);
            window.open(instagramLink, '_blank');
        }
    });
}