document.addEventListener("DOMContentLoaded", function () {
    const popup = document.getElementById('notification-popup');
    const closeButton = document.getElementById('popup-close');
    const allowButton = document.getElementById('popup-allow');

    // Firebase config
    const firebaseConfig = {
        apiKey: "AIzaSyBogRKxumEd5ZIEpDt3BhzaTBLLtrU3olc",
        authDomain: "haberler-43c8.firebaseapp.com",
        projectId: "haberler-43c8",
        messagingSenderId: "1001974719098",
        appId: "1:1001974719098:web:ea0229e7b72c587698d1c3",
        measurementId: "G-HVCRFS7N2P"
    };

    // Firebase başlat
    if (!firebase.apps.length) {
        firebase.initializeApp(firebaseConfig);
    }

    const messaging = firebase.messaging();

    // Foreground mesajları
    messaging.onMessage((payload) => {
        console.log('[foreground] Mesaj alındı:', payload);

        if (Notification.permission === 'granted') {
            const { title, body, icon, image } = payload.notification || {};
            const options = {
                body,
                icon: icon || '/favicon.ico',
                image,
                data: {
                    link: payload.fcmOptions?.link || '/'
                }
            };
            new Notification(title, options);
        }
    });

    function isSafari() {
        return /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
    }
    // === 👇 ZAMAN ve KADEMELİ TEKRAR MEKANİZMASI 👇 ===
    (function resetAllNotificationPreferencesOnce() {
        const alreadyReset = localStorage.getItem("resetDone");

        if (!alreadyReset) {
            try {
                localStorage.removeItem("userSelection");
                localStorage.removeItem("userSelectionSavedAt");
                localStorage.removeItem("userSelectionRejectCount");

                document.cookie = "userSelection=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;";
                document.cookie = "userSelectionSavedAt=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;";

                console.log("⛔ Kullanıcı tercihleri sıfırlandı. Bildirim popup'ı tekrar gösterilecek.");

                // ❗ Artık tekrar sıfırlama yapılmayacak
                localStorage.setItem("resetDone", "1");
            } catch (e) {
                console.warn("Temizlik işlemi başarısız:", e);
            }
        } else {
            console.log("✅ Tercihler daha önce sıfırlandı, tekrar silinmedi.");
        }
    })();
    function saveSelection(choose) {
        try {
            localStorage.setItem("userSelection", choose);
            localStorage.setItem("userSelectionSavedAt", new Date().toISOString());
        } catch (e) {
            console.warn("localStorage desteklenmiyor:", e);
        }

        const expiryDate = new Date();
        expiryDate.setTime(expiryDate.getTime() + (180 * 24 * 60 * 60 * 1000)); // 6 ay cookie süresi
        document.cookie = `userSelection=${choose}; expires=${expiryDate.toUTCString()}; path=/`;
        console.log(`Seçim kaydedildi: ${choose}`);
    }

    function incrementRejectCount() {
        const current = parseInt(localStorage.getItem("userSelectionRejectCount") || "0", 10);
        localStorage.setItem("userSelectionRejectCount", current + 1);
    }

    function getNextRetryDelayDays(count) {
        switch (count) {
            case 0: return 0;     // ilk gösterim hemen olabilir
            case 1: return 7;     // 1 hafta
            case 2: return 30;    // 1 ay
            case 3: return 60;    // 2 ay
            default: return 180;  // 6 ay
        }
    }

    function shouldShowPopup() {
        const selection = localStorage.getItem("userSelection");
        const savedAt = localStorage.getItem("userSelectionSavedAt");
        const rejectCount = parseInt(localStorage.getItem("userSelectionRejectCount") || "0", 10);

        if (!selection) return true; // hiç seçim yapılmamışsa göster

        if (selection === "1" && savedAt) {
            const savedTime = new Date(savedAt).getTime();
            const now = Date.now();
            const diffDays = (now - savedTime) / (1000 * 60 * 60 * 24);

            return diffDays >= getNextRetryDelayDays(rejectCount);
        }

        return false; // zaten izin verildiyse bir daha sorma
    }

    function showPopup() {
        const isMobileOrSafari = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent) || /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
        if (!isMobileOrSafari) {
            popup.style.display = 'flex';
            setTimeout(() => popup.classList.add('show'), 10);
        }
    }

    // === 👇 ZAMANLAYICI BAŞLAT (performansı etkilemez) 👇 ===

    if (shouldShowPopup()) {
        setTimeout(() => {
            showPopup();
        }, 10000); // 10 saniye sonra kontrol ve gösterim
    }

    // === 👇 Buton olayları 👇 ===

    closeButton.addEventListener('click', () => {
        saveSelection("1"); // istemiyorum
        incrementRejectCount();
        popup.classList.remove('show');
        setTimeout(() => popup.style.display = 'none', 500);
    });

    allowButton.addEventListener('click', async () => {
        popup.classList.remove('show');
        setTimeout(() => popup.style.display = 'none', 500);

        const permission = await Notification.requestPermission();
        if (permission === 'granted') {
            try {
                const registration = await navigator.serviceWorker.register('/firebase-messaging-sw.js');           

                const token = await messaging.getToken({
                    vapidKey: "BMLY_ktUzvDvyyLaSTXAA6ye1MuksJyB0sr8ZdEJukDH9EZjpEnu_3HPE8O1d_pR8iz_7_NF9UDsuNFlFb7xrZw",
                    serviceWorkerRegistration: registration
                });

                if (token) {
                    const topic = "onemli";
                    const url = `https://worker.haberler.com/SubscribeToTopic?fcmToken=${encodeURIComponent(token)}&topicName=${encodeURIComponent(topic)}`;
                    fetch(url).then(res => res.text()).then(data => console.log("Sunucu yanıtı:", data));
                }

                localStorage.setItem("userSelectionRejectCount", "0"); // resetle
                saveSelection("2"); // izin verildi
            } catch (e) {
                console.error("Bildirim alma hatası:", e);
                saveSelection("1");
                incrementRejectCount();
            }
        } else {
            saveSelection("1");
            incrementRejectCount();
        }
    });
});