/// <reference lib="webworker" />

import { clientsClaim } from 'workbox-core';
import { precacheAndRoute, cleanupOutdatedCaches, createHandlerBoundToURL } from 'workbox-precaching';
import { NavigationRoute, registerRoute } from 'workbox-routing';

clientsClaim();
cleanupOutdatedCaches();

const manifest = self.__WB_MANIFEST;

if (Array.isArray(manifest) && manifest.length > 0) {
  precacheAndRoute(manifest);
  const navigationHandler = createHandlerBoundToURL('/index.html');
  registerRoute(new NavigationRoute(navigationHandler));
} else {
  registerRoute(
    new NavigationRoute(({ request }) => {
      return fetch(request);
    }),
  );
}

self.addEventListener('message', (event) => {
  if (event.data?.type === 'SKIP_WAITING') {
    void self.skipWaiting();
  }
});

self.addEventListener('push', (event) => {
  if (!event.data) {
    return;
  }

  let payload = {};

  try {
    payload = event.data.json();
  } catch {
    payload = {
      title: '알림',
      body: event.data.text(),
      data: {},
    };
  }

  const title = payload.title || 'AI Code App';
  const body = payload.body || '새 알림이 도착했습니다.';
  const notificationScope = payload.data?.notificationScope;
  const notificationKey =
    payload.data?.notificationKey ||
    [payload.threadId ?? 'ai-code-app-notification', payload.data?.eventType ?? 'event', Date.now()].join(':');

  event.waitUntil(
    self.registration.getNotifications().then((notifications) => {
      if (notificationScope === 'automation') {
        notifications
          .filter((notification) => notification.data?.notificationScope === 'automation')
          .forEach((notification) => notification.close());
      }

      return self.registration.showNotification(title, {
        body,
        data: payload.data ?? {},
        tag: notificationKey,
        badge: '/pwa-192x192.svg',
        icon: '/pwa-192x192.svg',
      });
    }),
  );
});

self.addEventListener('notificationclick', (event) => {
  const notificationData = event.notification.data ?? {};
  const notificationSessionId = typeof notificationData.sessionId === 'string' ? notificationData.sessionId.trim() : '';
  const notificationCategory = typeof notificationData.category === 'string' ? notificationData.category.trim() : '';
  const notificationType = typeof notificationData.type === 'string' ? notificationData.type.trim() : '';
  const notificationThreadId = typeof notificationData.threadId === 'string' ? notificationData.threadId.trim() : '';
  const isChatNotification =
    notificationCategory === 'chat' ||
    notificationType.startsWith('chat') ||
    notificationThreadId.startsWith('chat:');

  event.notification.close();
  let targetUrl;

  try {
    targetUrl = notificationData.targetUrl ? new URL(String(notificationData.targetUrl)) : new URL('/', self.location.origin);
  } catch {
    targetUrl = new URL('/', self.location.origin);
  }

  if (targetUrl.origin !== self.location.origin) {
    const fallbackUrl = new URL('/', self.location.origin);
    targetUrl.searchParams.forEach((value, key) => {
      fallbackUrl.searchParams.set(key, value);
    });
    targetUrl = fallbackUrl;
  }

  if (!targetUrl.searchParams.has('topMenu')) {
    targetUrl.searchParams.set('topMenu', notificationData.category === 'chat' ? 'chat' : 'plans');
  }

  if (isChatNotification) {
    targetUrl.pathname = '/chat/live';
    targetUrl.searchParams.set('topMenu', 'chat');
    targetUrl.searchParams.delete('chatView');
    targetUrl.searchParams.delete('runtimeRequestId');

    if (notificationSessionId) {
      targetUrl.searchParams.set('sessionId', notificationSessionId);
    }
  }

  if (notificationData.planId && !targetUrl.searchParams.has('planId')) {
    targetUrl.searchParams.set('planId', String(notificationData.planId));
  }

  if (notificationData.workId && !targetUrl.searchParams.has('workId')) {
    targetUrl.searchParams.set('workId', String(notificationData.workId));
  }

  event.waitUntil(
    Promise.all([
      self.registration.getNotifications().then((notifications) => {
        if (!notificationSessionId || !isChatNotification) {
          return;
        }

        notifications.forEach((notification) => {
          const candidateData = notification.data && typeof notification.data === 'object' ? notification.data : null;
          const candidateSessionId =
            candidateData && typeof candidateData.sessionId === 'string' ? candidateData.sessionId.trim() : '';
          const candidateCategory =
            candidateData && typeof candidateData.category === 'string' ? candidateData.category.trim() : '';
          const candidateType =
            candidateData && typeof candidateData.type === 'string' ? candidateData.type.trim() : '';
          const candidateThreadId =
            candidateData && typeof candidateData.threadId === 'string' ? candidateData.threadId.trim() : '';
          const isCandidateChatNotification =
            candidateCategory === 'chat' ||
            candidateType.startsWith('chat') ||
            candidateThreadId.startsWith('chat:');

          if (isCandidateChatNotification && candidateSessionId === notificationSessionId) {
            notification.close();
          }
        });
      }),
      self.clients.matchAll({ type: 'window', includeUncontrolled: true }).then((clientList) => {
        const existingClient = clientList[0];

        if (existingClient) {
          existingClient.focus();

          try {
            const clientUrl = new URL(existingClient.url);
            if (clientUrl.origin === targetUrl.origin) {
              return existingClient.navigate(targetUrl.toString());
            }
          } catch {
            return existingClient.navigate(targetUrl.toString());
          }
        }

        return self.clients.openWindow(targetUrl.toString());
      }),
    ]),
  );
});