import 'package:cake_wallet/bitcoin/bitcoin.dart';
import 'package:cake_wallet/entities/exchange_api_mode.dart';
import 'package:cake_wallet/entities/pin_code_required_duration.dart';
import 'package:cake_wallet/entities/preferences_key.dart';
import 'package:cw_core/transaction_priority.dart';
import 'package:cake_wallet/themes/theme_base.dart';
import 'package:cake_wallet/themes/theme_list.dart';
import 'package:flutter/material.dart';
import 'package:hive/hive.dart';
import 'package:mobx/mobx.dart';
import 'package:package_info/package_info.dart';
import 'package:cake_wallet/di.dart';
import 'package:cw_core/wallet_type.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:cake_wallet/entities/language_service.dart';
import 'package:cake_wallet/entities/balance_display_mode.dart';
import 'package:cake_wallet/entities/fiat_currency.dart';
import 'package:cw_core/node.dart';
import 'package:cake_wallet/monero/monero.dart';
import 'package:cake_wallet/entities/action_list_display_mode.dart';
import 'package:cake_wallet/entities/fiat_api_mode.dart';

part 'settings_store.g.dart';

class SettingsStore = SettingsStoreBase with _$SettingsStore;

abstract class SettingsStoreBase with Store {
  SettingsStoreBase(
      {required SharedPreferences sharedPreferences,
      required bool initialShouldShowMarketPlaceInDashboard,
      required FiatCurrency initialFiatCurrency,
      required BalanceDisplayMode initialBalanceDisplayMode,
      required bool initialSaveRecipientAddress,
      required FiatApiMode initialFiatMode,
      required bool initialAllowBiometricalAuthentication,
      required ExchangeApiMode initialExchangeStatus,
      required ThemeBase initialTheme,
      required int initialPinLength,
      required String initialLanguageCode,
      // required String initialCurrentLocale,
      required this.appVersion,
      required Map<WalletType, Node> nodes,
      required this.shouldShowYatPopup,
      required this.isBitcoinBuyEnabled,
      required this.actionlistDisplayMode,
      required this.pinTimeOutDuration,
      TransactionPriority? initialBitcoinTransactionPriority,
      TransactionPriority? initialMoneroTransactionPriority,
      TransactionPriority? initialHavenTransactionPriority,
      TransactionPriority? initialLitecoinTransactionPriority})
  : nodes = ObservableMap<WalletType, Node>.of(nodes),
    _sharedPreferences = sharedPreferences,
    fiatCurrency = initialFiatCurrency,
    balanceDisplayMode = initialBalanceDisplayMode,
    shouldSaveRecipientAddress = initialSaveRecipientAddress,
    fiatApiMode = initialFiatMode,
    allowBiometricalAuthentication = initialAllowBiometricalAuthentication,
        shouldShowMarketPlaceInDashboard = initialShouldShowMarketPlaceInDashboard,
    exchangeStatus = initialExchangeStatus,
    currentTheme = initialTheme,
    pinCodeLength = initialPinLength,
    languageCode = initialLanguageCode,
    priority = ObservableMap<WalletType, TransactionPriority>() {
    //this.nodes = ObservableMap<WalletType, Node>.of(nodes);

    if (initialMoneroTransactionPriority != null) {
        priority[WalletType.monero] = initialMoneroTransactionPriority;
    }

    if (initialBitcoinTransactionPriority != null) {
        priority[WalletType.bitcoin] = initialBitcoinTransactionPriority;
    }

    if (initialHavenTransactionPriority != null) {
        priority[WalletType.haven] = initialHavenTransactionPriority;
    }

    if (initialLitecoinTransactionPriority != null) {
        priority[WalletType.litecoin] = initialLitecoinTransactionPriority;
    }

    reaction(
        (_) => fiatCurrency,
        (FiatCurrency fiatCurrency) => sharedPreferences.setString(
            PreferencesKey.currentFiatCurrencyKey, fiatCurrency.serialize()));

    reaction(
        (_) => shouldShowYatPopup,
        (bool shouldShowYatPopup) => sharedPreferences
             .setBool(PreferencesKey.shouldShowYatPopup, shouldShowYatPopup));

    priority.observe((change) {
      final String? key;
      switch (change.key) {
        case WalletType.monero:
          key = PreferencesKey.moneroTransactionPriority;
          break;
        case WalletType.bitcoin:
          key = PreferencesKey.bitcoinTransactionPriority;
          break;
        case WalletType.litecoin:
          key = PreferencesKey.litecoinTransactionPriority;
          break;
        case WalletType.haven:
          key = PreferencesKey.havenTransactionPriority;
          break;
        default:
          key = null;
      }

      if (change.newValue != null && key != null) {
        sharedPreferences.setInt(key, change.newValue!.serialize());
      }
    });

    reaction(
        (_) => shouldSaveRecipientAddress,
        (bool shouldSaveRecipientAddress) => sharedPreferences.setBool(
            PreferencesKey.shouldSaveRecipientAddressKey,
            shouldSaveRecipientAddress));

    reaction(
            (_) => fiatApiMode,
            (FiatApiMode mode) => sharedPreferences.setInt(
            PreferencesKey.currentFiatApiModeKey, mode.serialize()));

    reaction(
        (_) => currentTheme,
        (ThemeBase theme) =>
            sharedPreferences.setInt(PreferencesKey.currentTheme, theme.raw));

    reaction(
        (_) => allowBiometricalAuthentication,
        (bool biometricalAuthentication) => sharedPreferences.setBool(
            PreferencesKey.allowBiometricalAuthenticationKey,
            biometricalAuthentication));

    reaction(
        (_) => shouldShowMarketPlaceInDashboard,
        (bool value) =>
            sharedPreferences.setBool(PreferencesKey.shouldShowMarketPlaceInDashboard, value));

    reaction(
        (_) => pinCodeLength,
        (int pinLength) => sharedPreferences.setInt(
            PreferencesKey.currentPinLength, pinLength));

    reaction(
        (_) => languageCode,
        (String languageCode) => sharedPreferences.setString(
            PreferencesKey.currentLanguageCode, languageCode));

    reaction(
        (_) => pinTimeOutDuration,
        (PinCodeRequiredDuration pinCodeInterval) => sharedPreferences.setInt(
            PreferencesKey.pinTimeOutDuration, pinCodeInterval.value));

    reaction(
        (_) => balanceDisplayMode,
        (BalanceDisplayMode mode) => sharedPreferences.setInt(
            PreferencesKey.currentBalanceDisplayModeKey, mode.serialize()));

    reaction(
            (_) => exchangeStatus,
            (ExchangeApiMode mode) => sharedPreferences.setInt(
            PreferencesKey.exchangeStatusKey, mode.serialize()));

    this
        .nodes
        .observe((change) {
            if (change.newValue != null && change.key != null) {
                _saveCurrentNode(change.newValue!, change.key!);
            }
        });
  }

  static const defaultPinLength = 4;
  static const defaultActionsMode = 11;
  static const defaultPinCodeTimeOutDuration = PinCodeRequiredDuration.tenminutes;

  @observable
  FiatCurrency fiatCurrency;

  @observable
  bool shouldShowYatPopup;

  @observable
  bool shouldShowMarketPlaceInDashboard;

  @observable
  ObservableList<ActionListDisplayMode> actionlistDisplayMode;

  @observable
  BalanceDisplayMode balanceDisplayMode;

  @observable
  FiatApiMode fiatApiMode;

  @observable
  bool shouldSaveRecipientAddress;

  @observable
  bool allowBiometricalAuthentication;

  @observable
  ExchangeApiMode exchangeStatus;

  @observable
  ThemeBase currentTheme;

  @observable
  int pinCodeLength;

  @observable
  PinCodeRequiredDuration pinTimeOutDuration;

  @computed
  ThemeData get theme => currentTheme.themeData;

  @observable
  String languageCode;

  @observable
  ObservableMap<WalletType, TransactionPriority> priority;

  String appVersion;

  SharedPreferences _sharedPreferences;

  ObservableMap<WalletType, Node> nodes;

  Node getCurrentNode(WalletType walletType) {
    final node = nodes[walletType];

    if (node == null) {
        throw Exception('No node found for wallet type: ${walletType.toString()}');
    }

    return node;
  }

  bool isBitcoinBuyEnabled;

  bool get shouldShowReceiveWarning =>
    _sharedPreferences.getBool(PreferencesKey.shouldShowReceiveWarning) ?? true;

  Future<void> setShouldShowReceiveWarning(bool value) async =>
    _sharedPreferences.setBool(PreferencesKey.shouldShowReceiveWarning, value);

  static Future<SettingsStore> load(
      {required Box<Node> nodeSource,
      required bool isBitcoinBuyEnabled,
      FiatCurrency initialFiatCurrency = FiatCurrency.usd,
      BalanceDisplayMode initialBalanceDisplayMode = BalanceDisplayMode.availableBalance,
      ThemeBase? initialTheme}) async {

    final sharedPreferences = await getIt.getAsync<SharedPreferences>();
    final currentFiatCurrency = FiatCurrency.deserialize(raw:
            sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey)!);

    TransactionPriority? moneroTransactionPriority =
        monero?.deserializeMoneroTransactionPriority(
            raw: sharedPreferences
                .getInt(PreferencesKey.moneroTransactionPriority)!);
    TransactionPriority? bitcoinTransactionPriority =
        bitcoin?.deserializeBitcoinTransactionPriority(sharedPreferences
                .getInt(PreferencesKey.bitcoinTransactionPriority)!);

    TransactionPriority? havenTransactionPriority;
    TransactionPriority? litecoinTransactionPriority;

    if (sharedPreferences.getInt(PreferencesKey.havenTransactionPriority) != null) {
      havenTransactionPriority = monero?.deserializeMoneroTransactionPriority(
          raw: sharedPreferences.getInt(PreferencesKey.havenTransactionPriority)!);
    }
    if (sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority) != null) {
      litecoinTransactionPriority = bitcoin?.deserializeLitecoinTransactionPriority(
          sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority)!);
    }

    moneroTransactionPriority ??= monero?.getDefaultTransactionPriority();
    bitcoinTransactionPriority ??= bitcoin?.getMediumTransactionPriority();
    havenTransactionPriority ??= monero?.getDefaultTransactionPriority();
    litecoinTransactionPriority ??= bitcoin?.getLitecoinTransactionPriorityMedium();

    final currentBalanceDisplayMode = BalanceDisplayMode.deserialize(
        raw: sharedPreferences
            .getInt(PreferencesKey.currentBalanceDisplayModeKey)!);
    // FIX-ME: Check for which default value we should have here
    final shouldSaveRecipientAddress =
        sharedPreferences.getBool(PreferencesKey.shouldSaveRecipientAddressKey) ?? false;
    final currentFiatApiMode = FiatApiMode.deserialize(
        raw: sharedPreferences
            .getInt(PreferencesKey.currentFiatApiModeKey) ?? FiatApiMode.enabled.raw);
    final allowBiometricalAuthentication = sharedPreferences
            .getBool(PreferencesKey.allowBiometricalAuthenticationKey) ??
        false;
    final shouldShowMarketPlaceInDashboard =
        sharedPreferences.getBool(PreferencesKey.shouldShowMarketPlaceInDashboard) ?? true;
    final exchangeStatus = ExchangeApiMode.deserialize(
        raw: sharedPreferences
            .getInt(PreferencesKey.exchangeStatusKey) ?? ExchangeApiMode.enabled.raw);
    final legacyTheme =
        (sharedPreferences.getBool(PreferencesKey.isDarkThemeLegacy) ?? false)
            ? ThemeType.dark.index
            : ThemeType.bright.index;
    final savedTheme = initialTheme ?? ThemeList.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.currentTheme) ??
            legacyTheme);
    final actionListDisplayMode = ObservableList<ActionListDisplayMode>();
    actionListDisplayMode.addAll(deserializeActionlistDisplayModes(
        sharedPreferences.getInt(PreferencesKey.displayActionListModeKey) ??
            defaultActionsMode));
    var pinLength = sharedPreferences.getInt(PreferencesKey.currentPinLength);
    final timeOutDuration =  sharedPreferences.getInt(PreferencesKey.pinTimeOutDuration);
    final pinCodeTimeOutDuration = timeOutDuration != null
        ? PinCodeRequiredDuration.deserialize(raw: timeOutDuration)
        : defaultPinCodeTimeOutDuration;
    
    // If no value
    if (pinLength == null || pinLength == 0) {
      pinLength = defaultPinLength;
    }

    final savedLanguageCode =
        sharedPreferences.getString(PreferencesKey.currentLanguageCode) ??
            await LanguageService.localeDetection();
    final nodeId = sharedPreferences.getInt(PreferencesKey.currentNodeIdKey);
    final bitcoinElectrumServerId = sharedPreferences
        .getInt(PreferencesKey.currentBitcoinElectrumSererIdKey);
    final litecoinElectrumServerId = sharedPreferences
        .getInt(PreferencesKey.currentLitecoinElectrumSererIdKey);
    final havenNodeId = sharedPreferences
        .getInt(PreferencesKey.currentHavenNodeIdKey);
    final moneroNode = nodeSource.get(nodeId);
    final bitcoinElectrumServer = nodeSource.get(bitcoinElectrumServerId);
    final litecoinElectrumServer = nodeSource.get(litecoinElectrumServerId);
    final havenNode = nodeSource.get(havenNodeId);
    final packageInfo = await PackageInfo.fromPlatform();
    final shouldShowYatPopup =
        sharedPreferences.getBool(PreferencesKey.shouldShowYatPopup) ?? true;

    final nodes = <WalletType, Node>{};

    if (moneroNode != null) {
        nodes[WalletType.monero] = moneroNode;
    }

    if (bitcoinElectrumServer != null) {
        nodes[WalletType.bitcoin] = bitcoinElectrumServer;
    }

    if (litecoinElectrumServer != null) {
        nodes[WalletType.litecoin] = litecoinElectrumServer;
    }

    if (havenNode != null) {
        nodes[WalletType.haven] = havenNode;
    }

    return SettingsStore(
        sharedPreferences: sharedPreferences,
        initialShouldShowMarketPlaceInDashboard: shouldShowMarketPlaceInDashboard,
        nodes: nodes,
        appVersion: packageInfo.version,
        isBitcoinBuyEnabled: isBitcoinBuyEnabled,
        initialFiatCurrency: currentFiatCurrency,
        initialBalanceDisplayMode: currentBalanceDisplayMode,
        initialSaveRecipientAddress: shouldSaveRecipientAddress,
        initialFiatMode: currentFiatApiMode,
        initialAllowBiometricalAuthentication: allowBiometricalAuthentication,
        initialExchangeStatus: exchangeStatus,
        initialTheme: savedTheme,
        actionlistDisplayMode: actionListDisplayMode,
        initialPinLength: pinLength,
        pinTimeOutDuration: pinCodeTimeOutDuration,
        initialLanguageCode: savedLanguageCode,
        initialMoneroTransactionPriority: moneroTransactionPriority,
        initialBitcoinTransactionPriority: bitcoinTransactionPriority,
        initialHavenTransactionPriority: havenTransactionPriority,
        initialLitecoinTransactionPriority: litecoinTransactionPriority,
        shouldShowYatPopup: shouldShowYatPopup);
  }

  Future<void> reload({required Box<Node> nodeSource}) async {

    final sharedPreferences = await getIt.getAsync<SharedPreferences>();

    fiatCurrency = FiatCurrency.deserialize(
        raw: sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey)!);

    priority[WalletType.monero] = monero?.deserializeMoneroTransactionPriority(
        raw: sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority)!) ??
        priority[WalletType.monero]!;
    priority[WalletType.bitcoin] = bitcoin?.deserializeBitcoinTransactionPriority(
        sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority)!) ??
        priority[WalletType.bitcoin]!;

    if (sharedPreferences.getInt(PreferencesKey.havenTransactionPriority) != null) {
      priority[WalletType.haven] = monero?.deserializeMoneroTransactionPriority(
          raw: sharedPreferences.getInt(PreferencesKey.havenTransactionPriority)!) ??
          priority[WalletType.haven]!;
    }
    if (sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority) != null) {
      priority[WalletType.litecoin] = bitcoin?.deserializeLitecoinTransactionPriority(
          sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority)!) ??
          priority[WalletType.litecoin]!;
    }

    balanceDisplayMode = BalanceDisplayMode.deserialize(
        raw: sharedPreferences
            .getInt(PreferencesKey.currentBalanceDisplayModeKey)!);
    shouldSaveRecipientAddress =
        sharedPreferences.getBool(PreferencesKey.shouldSaveRecipientAddressKey) ?? shouldSaveRecipientAddress;
    allowBiometricalAuthentication = sharedPreferences
        .getBool(PreferencesKey.allowBiometricalAuthenticationKey) ??
        allowBiometricalAuthentication;
    shouldShowMarketPlaceInDashboard =
        sharedPreferences.getBool(PreferencesKey.shouldShowMarketPlaceInDashboard) ??
            shouldShowMarketPlaceInDashboard;
    exchangeStatus = ExchangeApiMode.deserialize(
        raw: sharedPreferences
            .getInt(PreferencesKey.exchangeStatusKey) ?? ExchangeApiMode.enabled.raw);
    final legacyTheme =
        (sharedPreferences.getBool(PreferencesKey.isDarkThemeLegacy) ?? false)
            ? ThemeType.dark.index
            : ThemeType.bright.index;
    currentTheme = ThemeList.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.currentTheme) ??
            legacyTheme);
    actionlistDisplayMode = ObservableList<ActionListDisplayMode>();
    actionlistDisplayMode.addAll(deserializeActionlistDisplayModes(
        sharedPreferences.getInt(PreferencesKey.displayActionListModeKey) ??
            defaultActionsMode));
    var pinLength = sharedPreferences.getInt(PreferencesKey.currentPinLength);
    // If no value
    if (pinLength == null || pinLength == 0) {
      pinLength = pinCodeLength;
    }
    pinCodeLength = pinLength;

    languageCode = sharedPreferences.getString(PreferencesKey.currentLanguageCode) ?? languageCode;
    shouldShowYatPopup = sharedPreferences.getBool(PreferencesKey.shouldShowYatPopup) ?? shouldShowYatPopup;

    final nodeId = sharedPreferences.getInt(PreferencesKey.currentNodeIdKey);
    final bitcoinElectrumServerId = sharedPreferences
        .getInt(PreferencesKey.currentBitcoinElectrumSererIdKey);
    final litecoinElectrumServerId = sharedPreferences
        .getInt(PreferencesKey.currentLitecoinElectrumSererIdKey);
    final havenNodeId = sharedPreferences
        .getInt(PreferencesKey.currentHavenNodeIdKey);
    final moneroNode = nodeSource.get(nodeId);
    final bitcoinElectrumServer = nodeSource.get(bitcoinElectrumServerId);
    final litecoinElectrumServer = nodeSource.get(litecoinElectrumServerId);
    final havenNode = nodeSource.get(havenNodeId);

    if (moneroNode != null) {
      nodes[WalletType.monero] = moneroNode;
    }

    if (bitcoinElectrumServer != null) {
      nodes[WalletType.bitcoin] = bitcoinElectrumServer;
    }

    if (litecoinElectrumServer != null) {
      nodes[WalletType.litecoin] = litecoinElectrumServer;
    }

    if (havenNode != null) {
      nodes[WalletType.haven] = havenNode;
    }
  }

  Future<void> _saveCurrentNode(Node node, WalletType walletType) async {
    switch (walletType) {
      case WalletType.bitcoin:
        await _sharedPreferences.setInt(
            PreferencesKey.currentBitcoinElectrumSererIdKey, node.key as int);
        break;
      case WalletType.litecoin:
        await _sharedPreferences.setInt(
            PreferencesKey.currentLitecoinElectrumSererIdKey, node.key as int);
        break;
      case WalletType.monero:
        await _sharedPreferences.setInt(
            PreferencesKey.currentNodeIdKey, node.key as int);
        break;
      case WalletType.haven:
        await _sharedPreferences.setInt(
            PreferencesKey.currentHavenNodeIdKey, node.key as int);
        break;
      default:
        break;
    }

    nodes[walletType] = node;
  }
}