import { getApp, getApps, initializeApp } from '@react-native-firebase/app';
import {
   getMessaging,
   getToken as getMessagingToken,
   setAutoInitEnabled,
} from '@react-native-firebase/messaging';
import * as Notifications from 'expo-notifications';
import { useEffect } from 'react';
import { Linking, PermissionsAndroid, Platform } from 'react-native';
import { ConstEnv } from '@/constants/ConstEnv';

const RNfirebaseConfig = {
   apiKey: ConstEnv.firebase.apiKey,
   authDomain: ConstEnv.firebase.authDomain,
   projectId: ConstEnv.firebase.projectId,
   storageBucket: ConstEnv.firebase.storageBucket,
   messagingSenderId: ConstEnv.firebase.messagingSenderId,
   appId: ConstEnv.firebase.appId,
   databaseURL: ConstEnv.firebase.databaseURL
};

const initializeFirebase = async () => {
   try {
      let app;
      const apps = getApps();
      if (apps.length) {
         app = getApp() as any;
      } else {
         app = initializeApp(RNfirebaseConfig) as any;
      }
      const mess = getMessaging(app);
      await setAutoInitEnabled(mess, true);

      return mess;
   } catch (error) {
      console.error('Failed to initialize Firebase:', error);
   }
};

export const checkPermission = async () => {
   try {
      if (Platform.OS === 'android') {
         return await PermissionsAndroid.check(
            PermissionsAndroid.PERMISSIONS.POST_NOTIFICATIONS
         );
      } else if (Platform.OS === 'ios') {
         const { status } = await Notifications.getPermissionsAsync();
         return status === 'granted';
      }
   } catch (err) {
      console.warn('Error checking notification permissions:', err);
      return false;
   }
};

export const openSettings = () => {
   if (Platform.OS === 'ios') {
      Linking.openURL('app-settings:');
   } else {
      Linking.openSettings();
   }
};

export const requestPermission = async () => {
   try {
      if (Platform.OS === 'android') {
         const cek = await PermissionsAndroid.check(
            PermissionsAndroid.PERMISSIONS.POST_NOTIFICATIONS
         );
         if (!cek) {
            const granted = await PermissionsAndroid.request(
               PermissionsAndroid.PERMISSIONS.POST_NOTIFICATIONS
            );
            return granted === PermissionsAndroid.RESULTS.GRANTED;
         }
         return true;
      } else if (Platform.OS === 'ios') {
         const { status } = await Notifications.requestPermissionsAsync();
         return status === 'granted';
      }
   } catch (err) {
      console.warn('Error requesting notification permissions:', err);
   }
};

export const getToken = async () => {
   try {
      const mess = await initializeFirebase();
      if (!mess) return null;

      // pakai modular API
      const token = await getMessagingToken(mess);
      return token;
   } catch (error) {
      console.error('Error getting token:', error);
   }
};

export const useNotification = () => {
   useEffect(() => {
      const initializeAndSetup = async () => {
         try {
            await getToken();
         } catch (error) {
            console.error('Failed to setup notifications:', error);
         }
      };

      initializeAndSetup();
   }, []);
};