document.addEventListener('DOMContentLoaded', function() {
    const searchInput = document.querySelector('.sponsorlar-search-input');
    
    // Arama alanı yoksa sadece tıklama loglamaya devam ederiz.
    
    function getAllSponsorElements() {
        return {
            premium: document.querySelectorAll('.sponsorlar-card-wrapper'),
            gif: document.querySelectorAll('.sponsorlar-gif-item'),
            kart: document.querySelectorAll('.sponsorlar-card-item'),
            kayan: document.querySelectorAll('.sponsorlar-marquee-item'),
            kategori: document.querySelectorAll('.sponsorlar-kategori-baslik'),
            kategoriGrids: document.querySelectorAll('.sponsorlar-cards-grid'),
            sections: document.querySelectorAll('.sponsorlar-section, .sponsorlar-gif-section, .sponsorlar-cards-section, .sponsorlar-marquee')
        };
    }
    
    const allSponsorSections = getAllSponsorElements();
    
    function getSearchableText(element) {
        if (!element) return '';
        
        let searchText = '';
        
        const link = element.querySelector('a');
        if (link) {
            const href = link.getAttribute('href') || '';
            const img = link.querySelector('img');
            if (img) {
                const alt = img.getAttribute('alt') || '';
                const src = img.getAttribute('src') || '';
                searchText += href + ' ' + alt + ' ' + src + ' ';
            }
            const title = link.getAttribute('title') || '';
            searchText += title;
        }
        
        const cardText = element.querySelector('.sponsorlar-card-text');
        if (cardText) {
            searchText += ' ' + (cardText.textContent || '');
        }
        
        return searchText.toLowerCase();
    }
    
    function filterSponsors(searchTerm) {
        const term = searchTerm.toLowerCase().trim();
        const elements = getAllSponsorElements();
        
        if (term === '') {
            elements.sections.forEach(section => {
                if (section) {
                    section.style.removeProperty('display');
                }
            });
            
            elements.kategori.forEach(kategori => {
                if (kategori) {
                    kategori.style.removeProperty('display');
                }
            });
            
            elements.kategoriGrids.forEach(grid => {
                if (grid) {
                    grid.style.removeProperty('display');
                }
            });
            
            elements.premium.forEach(item => {
                if (item) {
                    item.style.removeProperty('display');
                }
            });
            
            elements.gif.forEach(item => {
                if (item) {
                    item.style.removeProperty('display');
                }
            });
            
            elements.kart.forEach(item => {
                if (item) {
                    item.style.removeProperty('display');
                }
            });
            
            elements.kayan.forEach(item => {
                if (item) {
                    item.style.removeProperty('display');
                }
            });
            
            return;
        }
        
        elements.premium.forEach(item => {
            if (!item) return;
            const text = getSearchableText(item);
            const matches = text.includes(term);
            item.style.display = matches ? '' : 'none';
        });
        
        elements.gif.forEach(item => {
            if (!item) return;
            const text = getSearchableText(item);
            const matches = text.includes(term);
            item.style.display = matches ? '' : 'none';
        });
        
        elements.kart.forEach(item => {
            if (!item) return;
            const text = getSearchableText(item);
            const matches = text.includes(term);
            item.style.display = matches ? '' : 'none';
        });
        
        elements.kayan.forEach(item => {
            if (!item) return;
            const text = getSearchableText(item);
            const matches = text.includes(term);
            item.style.display = matches ? '' : 'none';
        });
        
        elements.kategoriGrids.forEach(grid => {
            if (!grid) return;
            const hasVisibleCards = Array.from(grid.querySelectorAll('.sponsorlar-card-item')).some(card => {
                return card.style.display !== 'none';
            });
            
            const prevKategori = grid.previousElementSibling;
            if (prevKategori && prevKategori.classList.contains('sponsorlar-kategori-baslik')) {
                const kategoriText = prevKategori.textContent?.toLowerCase() || '';
                const kategoriMatches = kategoriText.includes(term);
                
                if (kategoriMatches || hasVisibleCards) {
                    prevKategori.style.display = '';
                    grid.style.display = '';
                } else {
                    prevKategori.style.display = 'none';
                    grid.style.display = 'none';
                }
            } else {
                grid.style.display = hasVisibleCards ? '' : 'none';
            }
        });
        
        elements.sections.forEach(section => {
            if (!section) return;
            
            if (section.classList.contains('sponsorlar-section')) {
                const hasVisible = Array.from(section.querySelectorAll('.sponsorlar-card-wrapper')).some(item => {
                    return item.style.display !== 'none';
                });
                section.style.display = hasVisible ? '' : 'none';
            } else if (section.classList.contains('sponsorlar-gif-section')) {
                const hasVisible = Array.from(section.querySelectorAll('.sponsorlar-gif-item')).some(item => {
                    return item.style.display !== 'none';
                });
                section.style.display = hasVisible ? '' : 'none';
            } else if (section.classList.contains('sponsorlar-marquee')) {
                const hasVisible = Array.from(section.querySelectorAll('.sponsorlar-marquee-item')).some(item => {
                    return item.style.display !== 'none';
                });
                section.style.display = hasVisible ? '' : 'none';
            } else if (section.classList.contains('sponsorlar-cards-section')) {
                const hasVisibleKategori = Array.from(section.querySelectorAll('.sponsorlar-kategori-baslik')).some(kategori => {
                    return kategori.style.display !== 'none';
                });
                const hasVisibleCards = Array.from(section.querySelectorAll('.sponsorlar-card-item')).some(item => {
                    return item.style.display !== 'none';
                });
                section.style.display = (hasVisibleKategori || hasVisibleCards) ? '' : 'none';
            }
        });
    }
    
    if (searchInput) {
        /* 150ms debounce — her tuş vuruşunda filterSponsors() yüzlerce kart üzerinde
           classList yazıp readback yapıyor. Hızlı yazımda jank üretir. */
        let _searchDebounceId = null;
        searchInput.addEventListener('input', function (e) {
            const value = e.target.value;
            if (_searchDebounceId) clearTimeout(_searchDebounceId);
            _searchDebounceId = setTimeout(function () {
                _searchDebounceId = null;
                filterSponsors(value);
            }, 150);
        });
    }

    // Sponsor tıklamalarını logla (sayfa yönlendirmesini geciktirmeden)
    const lastClickAtBySponsorId = {};

    function getSponsorIdFromAnchor(anchor) {
        const raw = anchor?.getAttribute?.('data-sponsor-id');
        const sponsorId = raw ? parseInt(raw, 10) : 0;
        return sponsorId > 0 ? sponsorId : 0;
    }

    function logSponsorClick(sponsorId) {
        const now = Date.now();
        if (lastClickAtBySponsorId[sponsorId] && (now - lastClickAtBySponsorId[sponsorId]) < 1000) {
            return; // Çok hızlı tekrar tıklamaları engelle
        }
        lastClickAtBySponsorId[sponsorId] = now;

        const url = 'ajax/sponsor_click.php';
        const payload = new URLSearchParams({ sponsor_id: String(sponsorId) }).toString();

        try {
            if (navigator.sendBeacon) {
                const blob = new Blob([payload], { type: 'application/x-www-form-urlencoded; charset=UTF-8' });
                navigator.sendBeacon(url, blob);
                return;
            }
        } catch (e) {
            // sendBeacon destek/izin sorunu olursa fetch fallback'a geçiyoruz
        }

        // keepalive: sayfa navigasyonu sırasında isteğin iptal olmasını azaltır
        fetch(url, {
            method: 'POST',
            headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
            body: payload,
            keepalive: true
        }).catch(() => {});
    }

    document.addEventListener('click', function(e) {
        const anchor = e.target?.closest?.('a[data-sponsor-id]');
        if (!anchor) return;

        const sponsorId = getSponsorIdFromAnchor(anchor);
        if (!sponsorId) return;

        logSponsorClick(sponsorId);
    });
});