import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:stackwallet/db/hive/db.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
import 'package:stackwallet/utilities/flutter_secure_storage_interface.dart';

class TokenInfo {
  final Coin coin;
  final String walletId;
  final String contractAddress;

  const TokenInfo(
      {required this.coin,
      required this.walletId,
      required this.contractAddress});

  factory TokenInfo.fromJson(Map<String, dynamic> jsonObject) {
    return TokenInfo(
      coin: Coin.values.byName(jsonObject["coin"] as String),
      walletId: jsonObject["id"] as String,
      contractAddress: jsonObject["contractAddress"] as String,
    );
  }

  Map<String, String> toMap() {
    return {
      "contractAddress": contractAddress,
      "walletId": walletId,
      "coin": coin.name,
    };
  }

  String toJsonString() {
    return jsonEncode(toMap());
  }

  @override
  String toString() {
    return "TokenInfo: ${toJsonString()}";
  }
}

class TokensService extends ChangeNotifier {
  late final SecureStorageInterface _secureStore;

  // Future<Map<String, TokenInfo>>? _walletNames;
  // Future<Map<String, TokenInfo>> get walletNames =>
  //     _walletNames ??= _fetchWalletNames();

  TokensService({
    required SecureStorageInterface secureStorageInterface,
  }) {
    _secureStore = secureStorageInterface;
  }

  // Future<Coin> getWalletCryptoCurrency({required String walletName}) async {
  //   final id = await getWalletId(walletName);
  //   final currency = DB.instance.get<dynamic>(
  //       boxName: DB.boxNameAllWalletsData, key: "${id}_cryptoCurrency");
  //   return Coin.values.byName(currency as String);
  // }

  // Future<bool> renameWallet({
  //   required String from,
  //   required String to,
  //   required bool shouldNotifyListeners,
  // }) async {
  //   if (from == to) {
  //     return true;
  //   }
  //
  //   final walletInfo = DB.instance
  //       .get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map;
  //
  //   final info = walletInfo.values.firstWhere(
  //       (element) => element['name'] == from,
  //       orElse: () => <String, String>{}) as Map;
  //
  //   if (info.isEmpty) {
  //     // tried to rename a non existing wallet
  //     Logging.instance
  //         .log("Tried to rename a non existing wallet!", level: LogLevel.Error);
  //     return false;
  //   }
  //
  //   if (from != to &&
  //       (walletInfo.values.firstWhere((element) => element['name'] == to,
  //               orElse: () => <String, String>{}) as Map)
  //           .isNotEmpty) {
  //     // name already exists
  //     Logging.instance.log("wallet with name \"$to\" already exists!",
  //         level: LogLevel.Error);
  //     return false;
  //   }
  //
  //   info["name"] = to;
  //   walletInfo[info['id']] = info;
  //
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData, key: 'names', value: walletInfo);
  //   await refreshWallets(shouldNotifyListeners);
  //   return true;
  // }

  // Future<Map<String, WalletInfo>> _fetchWalletNames() async {
  //   final names = DB.instance
  //       .get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
  //   if (names == null) {
  //     Logging.instance.log(
  //         "Fetched wallet 'names' returned null. Setting initializing 'names'",
  //         level: LogLevel.Info);
  //     await DB.instance.put<dynamic>(
  //         boxName: DB.boxNameAllWalletsData,
  //         key: 'names',
  //         value: <String, dynamic>{});
  //     return {};
  //   }
  //   Logging.instance.log("Fetched wallet names: $names", level: LogLevel.Info);
  //   final mapped = Map<String, dynamic>.from(names);
  //   mapped.removeWhere((name, dyn) {
  //     final jsonObject = Map<String, dynamic>.from(dyn as Map);
  //     try {
  //       Coin.values.byName(jsonObject["coin"] as String);
  //       return false;
  //     } catch (e, s) {
  //       Logging.instance.log("Error, ${jsonObject["coin"]} does not exist",
  //           level: LogLevel.Error);
  //       return true;
  //     }
  //   });
  //
  //   return mapped.map((name, dyn) => MapEntry(
  //       name, WalletInfo.fromJson(Map<String, dynamic>.from(dyn as Map))));
  // }

  // Future<void> addExistingStackWallet({
  //   required String name,
  //   required String walletId,
  //   required Coin coin,
  //   required bool shouldNotifyListeners,
  // }) async {
  //   final _names = DB.instance
  //       .get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
  //
  //   Map<String, dynamic> names;
  //   if (_names == null) {
  //     names = {};
  //   } else {
  //     names = Map<String, dynamic>.from(_names);
  //   }
  //
  //   if (names.keys.contains(walletId)) {
  //     throw Exception("Wallet with walletId \"$walletId\" already exists!");
  //   }
  //   if (names.values.where((element) => element['name'] == name).isNotEmpty) {
  //     throw Exception("Wallet with name \"$name\" already exists!");
  //   }
  //
  //   names[walletId] = {
  //     "id": walletId,
  //     "coin": coin.name,
  //     "name": name,
  //   };
  //
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData, key: 'names', value: names);
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData,
  //       key: "${walletId}_cryptoCurrency",
  //       value: coin.name);
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData,
  //       key: "${walletId}_mnemonicHasBeenVerified",
  //       value: false);
  //   await DB.instance.addWalletBox(walletId: walletId);
  //   await refreshWallets(shouldNotifyListeners);
  // }

  // /// returns the new walletId if successful, otherwise null
  // Future<String?> addNewWallet({
  //   required String name,
  //   required Coin coin,
  //   required bool shouldNotifyListeners,
  // }) async {
  //   final _names = DB.instance
  //       .get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
  //
  //   Map<String, dynamic> names;
  //   if (_names == null) {
  //     names = {};
  //   } else {
  //     names = Map<String, dynamic>.from(_names);
  //   }
  //
  //   // Prevent overwriting or storing empty names
  //   if (name.isEmpty ||
  //       names.values.where((element) => element['name'] == name).isNotEmpty) {
  //     return null;
  //   }
  //
  //   final id = const Uuid().v1();
  //   names[id] = {
  //     "id": id,
  //     "coin": coin.name,
  //     "name": name,
  //   };
  //
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData, key: 'names', value: names);
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData,
  //       key: "${id}_cryptoCurrency",
  //       value: coin.name);
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData,
  //       key: "${id}_mnemonicHasBeenVerified",
  //       value: false);
  //   await DB.instance.addWalletBox(walletId: id);
  //   await refreshWallets(shouldNotifyListeners);
  //   return id;
  // }

  // Future<List<String>> getFavoriteWalletIds() async {
  //   return DB.instance
  //       .values<String>(boxName: DB.boxNameFavoriteWallets)
  //       .toList();
  // }

  // Future<void> saveFavoriteWalletIds(List<String> walletIds) async {
  //   await DB.instance.deleteAll<String>(boxName: DB.boxNameFavoriteWallets);
  //   await DB.instance
  //       .addAll(boxName: DB.boxNameFavoriteWallets, values: walletIds);
  //   debugPrint("saveFavoriteWalletIds list: $walletIds");
  // }
  //
  // Future<void> addFavorite(String walletId) async {
  //   final list = await getFavoriteWalletIds();
  //   if (!list.contains(walletId)) {
  //     list.add(walletId);
  //   }
  //   await saveFavoriteWalletIds(list);
  // }
  //
  // Future<void> removeFavorite(String walletId) async {
  //   final list = await getFavoriteWalletIds();
  //   list.remove(walletId);
  //   await saveFavoriteWalletIds(list);
  // }
  //
  // Future<void> moveFavorite({
  //   required int fromIndex,
  //   required int toIndex,
  // }) async {
  //   final list = await getFavoriteWalletIds();
  //   if (fromIndex < toIndex) {
  //     toIndex -= 1;
  //   }
  //   final walletId = list.removeAt(fromIndex);
  //   list.insert(toIndex, walletId);
  //   await saveFavoriteWalletIds(list);
  // }
  //
  // Future<bool> checkForDuplicate(String name) async {
  //   final names = DB.instance
  //       .get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
  //   if (names == null) return false;
  //
  //   return names.values.where((element) => element['name'] == name).isNotEmpty;
  // }

  Future<String?> getWalletId(String walletName) async {
    final names = DB.instance
        .get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map;
    final shells =
        names.values.where((element) => element['name'] == walletName);
    if (shells.isEmpty) {
      return null;
    }
    return shells.first["id"] as String;
  }

  // Future<bool> isMnemonicVerified({required String walletId}) async {
  //   final isVerified = DB.instance.get<dynamic>(
  //       boxName: DB.boxNameAllWalletsData,
  //       key: "${walletId}_mnemonicHasBeenVerified") as bool?;
  //
  //   if (isVerified == null) {
  //     Logging.instance.log(
  //       "isMnemonicVerified(walletId: $walletId) returned null which should never happen!",
  //       level: LogLevel.Error,
  //     );
  //     throw Exception(
  //         "isMnemonicVerified(walletId: $walletId) returned null which should never happen!");
  //   } else {
  //     return isVerified;
  //   }
  // }
  //
  // Future<void> setMnemonicVerified({required String walletId}) async {
  //   final isVerified = DB.instance.get<dynamic>(
  //       boxName: DB.boxNameAllWalletsData,
  //       key: "${walletId}_mnemonicHasBeenVerified") as bool?;
  //
  //   if (isVerified == null) {
  //     Logging.instance.log(
  //       "setMnemonicVerified(walletId: $walletId) tried running on non existent wallet!",
  //       level: LogLevel.Error,
  //     );
  //     throw Exception(
  //         "setMnemonicVerified(walletId: $walletId) tried running on non existent wallet!");
  //   } else if (isVerified) {
  //     Logging.instance.log(
  //       "setMnemonicVerified(walletId: $walletId) tried running on already verified wallet!",
  //       level: LogLevel.Error,
  //     );
  //     throw Exception(
  //         "setMnemonicVerified(walletId: $walletId) tried running on already verified wallet!");
  //   } else {
  //     await DB.instance.put<dynamic>(
  //         boxName: DB.boxNameAllWalletsData,
  //         key: "${walletId}_mnemonicHasBeenVerified",
  //         value: true);
  //     Logging.instance.log(
  //       "setMnemonicVerified(walletId: $walletId) successful",
  //       level: LogLevel.Error,
  //     );
  //   }
  // }
  //
  // // pin + mnemonic as well as anything else in secureStore
  // Future<int> deleteWallet(String name, bool shouldNotifyListeners) async {
  //   final names = DB.instance.get<dynamic>(
  //           boxName: DB.boxNameAllWalletsData, key: 'names') as Map? ??
  //       {};
  //
  //   final walletId = await getWalletId(name);
  //   if (walletId == null) {
  //     return 3;
  //   }
  //
  //   Logging.instance.log(
  //     "deleteWallet called with name=$name and id=$walletId",
  //     level: LogLevel.Warning,
  //   );
  //
  //   final shell = names.remove(walletId);
  //
  //   if (shell == null) {
  //     return 0;
  //   }
  //
  //   // TODO delete derivations!!!
  //   await _secureStore.delete(key: "${walletId}_pin");
  //   await _secureStore.delete(key: "${walletId}_mnemonic");
  //
  //   await DB.instance.delete<dynamic>(
  //       boxName: DB.boxNameAllWalletsData, key: "${walletId}_cryptoCurrency");
  //   await DB.instance.delete<dynamic>(
  //       boxName: DB.boxNameAllWalletsData,
  //       key: "${walletId}_mnemonicHasBeenVerified");
  //   if (coinFromPrettyName(shell['coin'] as String) == Coin.wownero) {
  //     final wowService =
  //         wownero.createWowneroWalletService(DB.instance.moneroWalletInfoBox);
  //     await wowService.remove(walletId);
  //     Logging.instance
  //         .log("monero wallet: $walletId deleted", level: LogLevel.Info);
  //   } else if (coinFromPrettyName(shell['coin'] as String) == Coin.monero) {
  //     final xmrService =
  //         monero.createMoneroWalletService(DB.instance.moneroWalletInfoBox);
  //     await xmrService.remove(walletId);
  //     Logging.instance
  //         .log("monero wallet: $walletId deleted", level: LogLevel.Info);
  //   } else if (coinFromPrettyName(shell['coin'] as String) == Coin.epicCash) {
  //     final deleteResult =
  //         await deleteEpicWallet(walletId: walletId, secureStore: _secureStore);
  //     Logging.instance.log(
  //         "epic wallet: $walletId deleted with result: $deleteResult",
  //         level: LogLevel.Info);
  //   }
  //
  //   // box data may currently still be read/written to if wallet was refreshing
  //   // when delete was requested so instead of deleting now we mark the wallet
  //   // as needs delete by adding it's id to a list which gets checked on app start
  //   await DB.instance.add<String>(
  //       boxName: DB.boxNameWalletsToDeleteOnStart, value: walletId);
  //
  //   final lookupService = TradeSentFromStackService();
  //   for (final lookup in lookupService.all) {
  //     if (lookup.walletIds.contains(walletId)) {
  //       // update lookup data to reflect deleted wallet
  //       await lookupService.save(
  //         tradeWalletLookup: lookup.copyWith(
  //           walletIds: lookup.walletIds.where((id) => id != walletId).toList(),
  //         ),
  //       );
  //     }
  //   }
  //
  //   // delete notifications tied to deleted wallet
  //   for (final notification in NotificationsService.instance.notifications) {
  //     if (notification.walletId == walletId) {
  //       await NotificationsService.instance.delete(notification, false);
  //     }
  //   }
  //
  //   if (names.isEmpty) {
  //     await DB.instance.deleteAll<dynamic>(boxName: DB.boxNameAllWalletsData);
  //     _walletNames = Future(() => {});
  //     notifyListeners();
  //     return 2; // error code no wallets on device
  //   }
  //
  //   await DB.instance.put<dynamic>(
  //       boxName: DB.boxNameAllWalletsData, key: 'names', value: names);
  //   await refreshWallets(shouldNotifyListeners);
  //   return 0;
  // }
  //
  // Future<void> refreshWallets(bool shouldNotifyListeners) async {
  //   final newNames = await _fetchWalletNames();
  //   _walletNames = Future(() => newNames);
  //   if (shouldNotifyListeners) notifyListeners();
  // }
}