"use strict";

// Önbellek Adı ve Versiyonu
const CACHE_NAME = "offline-cache-v1";
const OFFLINE_URL = "/offline.html";

// Önbelleğe Alınacak Dosyalar
const filesToCache = [
    OFFLINE_URL,
    "/css/app.css",
    "/js/app.js",
    "/images/logo1.png",
    "/favicon.ico",
    "/logo72.png",
    "/logo192.png"
];

// Service Worker'ın Yüklenme (install) Olayı 
self.addEventListener("install", (event) => {
    console.log("Service Worker: Installing...");
    event.waitUntil(
        caches.open(CACHE_NAME).then((cache) => {
            console.log("Service Worker: Caching Files");
            return cache.addAll(filesToCache);
        }).catch((err) => console.error("Service Worker: Caching Failed", err))
    );
});

// Ağ İsteklerini Yönetme (fetch) Olayı
self.addEventListener("fetch", (event) => {
    const requestURL = event.request.url;

    // Sadece http/https isteklerini işleme al
    if (requestURL.startsWith("http")) {
        if (event.request.mode === "navigate") {
            // Sayfa istekleri için
            event.respondWith(
                fetch(event.request)
                    .catch(() => caches.match(OFFLINE_URL))
            );
        } else {
            // Statik dosyalar için
            event.respondWith(
                caches.match(event.request).then((response) => {
                    return response || fetch(event.request).then((fetchResponse) => {
                        // Dinamik olarak önbelleğe ekle
                        return caches.open(CACHE_NAME).then((cache) => {
                            cache.put(event.request, fetchResponse.clone());
                            return fetchResponse;
                        });
                    });
                }).catch(() => caches.match(OFFLINE_URL)) // Hata durumunda offline sayfası
            );
        }
    } else {
        // chrome-extension:// gibi desteklenmeyen URL'leri atla
        console.warn("Service Worker: Unsupported request ignored", requestURL);
    }
});

// Eski Önbellekleri Temizleme (activate) Olayı
self.addEventListener("activate", (event) => {
    console.log("Service Worker: Activating...");
    event.waitUntil(
        Promise.all([
            caches.keys().then((cacheNames) => {
                return Promise.all(
                    cacheNames.map((cache) => {
                        if (cache !== CACHE_NAME) {
                            console.log("Service Worker: Clearing Old Cache", cache);
                            return caches.delete(cache);
                        }
                    })
                );
            }),
            clients.claim()
        ])
    );
});


self.addEventListener('push', function(event) {
    console.log('Push event received');
    if (event.data) {
        const data = event.data.json();
        
        const options = {
            body: data.body,
            icon: '/logo192.png',
            badge: '/logo72.png',
            data: {
                url: data.url
            },
            vibrate: [200, 100, 200],
            tag: 'notification',
            requireInteraction: true,
            renotify: true,
            actions: [
                {
                    action: 'open',
                    title: 'Aç'
                },
                {
                    action: 'close',
                    title: 'Kapat'
                }
            ]
        };

        event.waitUntil(
            self.registration.showNotification(data.title, options)
        );
    }
});

self.addEventListener('notificationclick', function(event) {
    console.log('Notification başlaması lazım..', event);
    event.notification.close();
    
    if (event.action === 'close') {
        return;
    }
    
    event.waitUntil(
        clients.matchAll({type: 'window'}).then(function(clientList) {
            const url = event.notification.data?.url || '/';
            
            for (const client of clientList) {
                if (client.url === url && 'focus' in client) {
                    return client.focus();
                }
            }
            
            return clients.openWindow(url);
        })
    );
});