import 'dart:convert';
import 'dart:io' show Platform;

import 'package:dio/dio.dart';
import 'package:easy_localization/easy_localization.dart';
import 'package:firebase_analytics/firebase_analytics.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:island/widgets/alert.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:island/models/account.dart';
import 'package:island/pods/config.dart';
import 'package:island/pods/network.dart';
import 'package:island/talker.dart';

class UserInfoNotifier extends AsyncNotifier<SnAccount?> {
  @override
  Future<SnAccount?> build() async {
    final token = ref.watch(tokenProvider);
    if (token == null) {
      talker.info('[UserInfo] No token found, not going to fetch...');
      return null;
    }
    return _fetchUser();
  }

  Future<SnAccount?> _fetchUser() async {
    try {
      final client = ref.read(apiClientProvider);
      final response = await client.get('/pass/accounts/me');
      final user = SnAccount.fromJson(response.data);

      if (kIsWeb || !(Platform.isLinux || Platform.isWindows)) {
        FirebaseAnalytics.instance.setUserId(id: user.id);
      }
      return user;
    } catch (error, stackTrace) {
      if (!kIsWeb) {
        if (error is DioException) {
          showOverlayDialog<bool>(
            builder:
                (context, close) => AlertDialog(
                  title: Text('failedToLoadUserInfo'.tr()),
                  content: Text(
                    [
                      (error.response?.statusCode == 401
                              ? 'failedToLoadUserInfoUnauthorized'
                              : 'failedToLoadUserInfoNetwork')
                          .tr()
                          .trim(),
                      '',
                      '${error.response?.statusCode ?? 'Network Error'}',
                      if (error.response?.headers != null)
                        error.response?.headers,
                      if (error.response?.data != null)
                        jsonEncode(error.response?.data),
                    ].join('\n'),
                  ),
                  actions: [
                    TextButton(
                      onPressed: () => close(false),
                      child: Text('okay'.tr()),
                    ),
                    TextButton(
                      onPressed: () => close(true),
                      child: Text('retry'.tr()),
                    ),
                  ],
                ),
          ).then((value) {
            if (value == true) {
              ref.invalidateSelf();
            }
          });
        } else {
          showOverlayDialog<bool>(
            builder:
                (context, close) => AlertDialog(
                  title: Text('failedToLoadUserInfo'.tr()),
                  content: Text(
                    [
                      'failedToLoadUserInfoNetwork'.tr(),
                      error.toString(),
                    ].join('\n\n').trim(),
                  ),
                  actions: [
                    TextButton(
                      onPressed: () => close(false),
                      child: Text('okay'.tr()),
                    ),
                    TextButton(
                      onPressed: () => close(true),
                      child: Text('retry'.tr()),
                    ),
                  ],
                ),
          ).then((value) {
            if (value == true) {
              ref.invalidateSelf();
            }
          });
        }
      }
      talker.error(
        "[UserInfo] Failed to fetch user info...",
        error,
        stackTrace,
      );
      return null;
    }
  }

  Future<void> fetchUser() async {
    ref.invalidateSelf();
    await future;
  }

  Future<void> logOut() async {
    state = const AsyncValue.data(null);
    final prefs = ref.read(sharedPreferencesProvider);
    await prefs.remove(kTokenPairStoreKey);
    ref.invalidate(tokenProvider);
    if (kIsWeb || !(Platform.isLinux || Platform.isWindows)) {
      FirebaseAnalytics.instance.setUserId(id: null);
    }
  }
}

final userInfoProvider = AsyncNotifierProvider<UserInfoNotifier, SnAccount?>(
  UserInfoNotifier.new,
);