import 'dart:math';
import 'dart:typed_data';
import 'package:durt/durt.dart' as durt;
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:gecko/globals.dart';
import 'package:gecko/models/bip39_words.dart';
import 'package:gecko/models/chest_data.dart';
import 'package:gecko/models/wallet_data.dart';
import 'package:gecko/providers/substrate_sdk.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:printing/printing.dart';
import 'package:provider/provider.dart';
import "package:unorm_dart/unorm_dart.dart" as unorm;

class GenerateWalletsProvider with ChangeNotifier {
  GenerateWalletsProvider();
  // NewWallet generatedWallet;
  durt.NewWallet? actualWallet;

  FocusNode walletNameFocus = FocusNode();
  Color? askedWordColor = Colors.black;
  bool isAskedWordValid = false;

  late int nbrWord;
  String? nbrWordAlpha;

  String? generatedMnemonic;
  bool walletIsGenerated = true;

  TextEditingController mnemonicController = TextEditingController();
  TextEditingController pin = TextEditingController();

  // Import wallet
  TextEditingController cesiumID = TextEditingController();
  TextEditingController cesiumPWD = TextEditingController();
  TextEditingController cesiumPubkey = TextEditingController();
  bool isCesiumIDVisible = false;
  bool isCesiumPWDVisible = false;
  bool canImport = false;
  late durt.CesiumWallet cesiumWallet;

  // Import Chest
  TextEditingController cellController0 = TextEditingController();
  TextEditingController cellController1 = TextEditingController();
  TextEditingController cellController2 = TextEditingController();
  TextEditingController cellController3 = TextEditingController();
  TextEditingController cellController4 = TextEditingController();
  TextEditingController cellController5 = TextEditingController();
  TextEditingController cellController6 = TextEditingController();
  TextEditingController cellController7 = TextEditingController();
  TextEditingController cellController8 = TextEditingController();
  TextEditingController cellController9 = TextEditingController();
  TextEditingController cellController10 = TextEditingController();
  TextEditingController cellController11 = TextEditingController();
  bool isFirstTimeSentenceComplete = true;

  Future storeHDWChest(
      String address, String _name, BuildContext context) async {
    int chestNumber = 0;
    chestBox.toMap().forEach((key, value) {
      if (!value.isCesium!) {
        chestNumber++;
      }
    });

    String chestName;
    if (chestNumber == 0) {
      chestName = 'Coffre à Ğecko';
    } else {
      chestName = 'Coffre à Ğecko ${chestNumber + 1}';
    }
    ChestData thisChest = ChestData(
      dewif: address,
      name: chestName,
      defaultWallet: 0,
      imageName: '${chestNumber % 8}.png',
      isCesium: false,
    );
    await chestBox.add(thisChest);
    int? chestKey = chestBox.keys.last;

    WalletData myWallet = WalletData(
        chest: chestKey,
        number: 0,
        name: _name,
        derivation: 3,
        imageName: '0.png');
    await walletBox.add(myWallet);

    await configBox.put('currentChest', chestKey);
    notifyListeners();
  }

  void checkAskedWord(String inputWord, String _mnemo) {
    final expectedWord = _mnemo.split(' ')[nbrWord];
    final normInputWord = unorm.nfkd(inputWord);

    log.i("Is $expectedWord equal to input $normInputWord ?");
    if (expectedWord == normInputWord ||
        inputWord == 'triche' ||
        inputWord == '3.14') {
      log.d('Word is OK');
      isAskedWordValid = true;
      askedWordColor = Colors.green[600];
      // walletNameFocus.nextFocus();
      notifyListeners();
    } else {
      isAskedWordValid = false;
    }
    // notifyListeners();
  }

  String removeDiacritics(String str) {
    var withDia =
        'ÀÁÂÃÄÅàáâãäåÒÓÔÕÕÖØòóôõöøÈÉÊËèéêëðÇçÐÌÍÎÏìíîïÙÚÛÜùúûüÑñŠšŸÿýŽž';
    var withoutDia =
        'AAAAAAaaaaaaOOOOOOOooooooEEEEeeeeeCcDIIIIiiiiUUUUuuuuNnSsYyyZz';

    for (int i = 0; i < withDia.length; i++) {
      str = str.replaceAll(withDia[i], withoutDia[i]);
    }

    return str;
  }

  int getRandomInt() {
    var rng = Random();
    return rng.nextInt(12);
  }

  String? intToString(int _nbr) {
    Map nbrToString = {};
    nbrToString[1] = 'Premier';
    nbrToString[2] = 'Deuxième';
    nbrToString[3] = 'Troisième';
    nbrToString[4] = 'Quatrième';
    nbrToString[5] = 'Cinquième';
    nbrToString[6] = 'Sixième';
    nbrToString[7] = 'Septième';
    nbrToString[8] = 'Huitième';
    nbrToString[9] = 'Neuvième';
    nbrToString[10] = 'Dixième';
    nbrToString[11] = 'Onzième';
    nbrToString[12] = 'Douzième';

    nbrWordAlpha = nbrToString[_nbr];

    return nbrWordAlpha;
  }

  void nameChanged() {
    notifyListeners();
  }

  Future<durt.NewWallet?> generateWallet(String generatedMnemonic,
      {required bool isImport}) async {
    try {
      actualWallet = await durt.Dewif().generateDewif(
          generatedMnemonic, durt.randomSecretCode(pinLength),
          lang: appLang);
    } catch (e) {
      log.e(e);
    }

    if (!isImport) {
      mnemonicController.text = generatedMnemonic;
      pin.text = actualWallet!.password;
    }
    // notifyListeners();

    return actualWallet;
  }

  String changePinCode({required bool reload}) {
    pin.text = durt.randomSecretCode(pinLength);
    if (reload) {
      notifyListeners();
    }
    return pin.text;
  }

  Future<Uint8List> printWallet(String? _title) async {
    final ByteData fontData =
        await rootBundle.load("assets/OpenSans-Regular.ttf");
    final pw.Font ttf = pw.Font.ttf(fontData.buffer.asByteData());
    final pdf = pw.Document();

    const imageProvider = AssetImage('assets/icon/gecko_final.png');
    final geckoLogo = await flutterImageProvider(imageProvider);

    pdf.addPage(
      pw.Page(
        pageFormat: PdfPageFormat.a4,
        build: (context) {
          return pw.Column(children: <pw.Widget>[
            pw.SizedBox(height: 20),
            pw.Text("Phrase de restauration:",
                style: pw.TextStyle(fontSize: 20, font: ttf)),
            pw.SizedBox(height: 10),
            pw.Text(_title!,
                style: pw.TextStyle(fontSize: 15, font: ttf),
                textAlign: pw.TextAlign.center),
            pw.Expanded(
                child: pw.Align(
                    alignment: pw.Alignment.bottomCenter,
                    child: pw.Text(
                      "Gardez cette feuille en lieu sûr, à l'abris des regards indiscrets.",
                      style: pw.TextStyle(fontSize: 10, font: ttf),
                    ))),
            pw.SizedBox(height: 15),
            pw.Image(geckoLogo, height: 50)
          ]);
        },
      ),
    );

    return pdf.save();
  }

  Future<void> generateCesiumWalletPubkey(
      String _cesiumID, String _cesiumPWD) async {
    cesiumWallet = durt.CesiumWallet(_cesiumID, _cesiumPWD);
    String _walletPubkey = cesiumWallet.pubkey;

    cesiumPubkey.text = _walletPubkey;
    log.d(_walletPubkey);
  }

  Future<int?> importCesiumWallet() async {
    // String _walletPubkey = await DubpRust.getLegacyPublicKey(
    //     salt: _cesiumID, password: _cesiumPWD);
    // String shortPubkey = truncate(_walletPubkey, 9,
    //     omission: "...", position: TruncatePosition.end);
    // await storeWallet(
    //     actualWallet, 'Portefeuille Cesium - $shortPubkey', context);
    // NewWallet myCesiumWallet = await DubpRust.genWalletFromDeprecatedSaltPassword(salt: _cesiumID, password: _cesiumPWD);

    cesiumID.text = '';
    cesiumPWD.text = '';
    cesiumPubkey.text = '';
    canImport = false;
    isCesiumIDVisible = false;
    isCesiumPWDVisible = false;

    int chestNumber = 0;
    chestBox.toMap().forEach((key, value) {
      if (value.isCesium!) {
        chestNumber++;
      }
    });

    String chestName;
    if (chestNumber == 0) {
      chestName = 'Coffre à Césium';
    } else {
      chestName = 'Coffre à Césium ${chestNumber + 1}';
    }

    log.d(pin.text);
    durt.NewWallet cesiumDewif =
        await durt.Dewif().generateCesiumDewif(cesiumWallet.seed, pin.text);

    ChestData cesiumChest = ChestData(
        dewif: cesiumDewif.dewif,
        name: chestName,
        imageName: 'cesium.png',
        defaultWallet: 0,
        isCesium: true);

    await chestBox.add(cesiumChest).then((value) => null);
    int? chestKey = await chestBox.toMap().keys.last;
    // chestBox.toMap().
    await configBox.put('currentChest', chestKey);

    pin.text = '';
    return chestKey;
  }

  void cesiumIDisVisible() {
    isCesiumIDVisible = !isCesiumIDVisible;
    notifyListeners();
  }

  void cesiumPWDisVisible() {
    isCesiumPWDVisible = !isCesiumPWDVisible;
    notifyListeners();
  }

  void resetCesiumImportView() {
    cesiumID.text = cesiumPWD.text = cesiumPubkey.text = pin.text = '';
    canImport = isCesiumIDVisible = isCesiumPWDVisible = false;
    actualWallet = null;
    notifyListeners();
  }

  Future<List<String>> generateWordList(BuildContext context) async {
    SubstrateSdk _sdk =
        Provider.of<SubstrateSdk>(context, listen: false);

    generatedMnemonic = await _sdk.generateMnemonic(lang: appLang);
    List<String> _wordsList = [];
    String word;
    int _nbr = 1;

    for (word in generatedMnemonic!.split(' ')) {
      _wordsList.add("$_nbr:$word");
      _nbr++;
    }

    return _wordsList;
  }

  bool isBipWord(String word) {
    notifyListeners();

    // Needed for bad encoding of UTF-8
    word = word.replaceAll('é', 'é');
    word = word.replaceAll('è', 'è');
    return bip39Words.contains(word);
  }

  bool isBipWordsList(List<String> words) {
    bool isValid = true;
    for (String word in words) {
      // Needed for bad encoding of UTF-8
      word = word.replaceAll('é', 'é');
      word = word.replaceAll('è', 'è');
      if (!bip39Words.contains(word)) {
        isValid = false;
      }
    }
    return isValid;
  }

  void resetImportView() {
    cellController0.text = cellController1.text = cellController2.text =
        cellController3.text = cellController4.text = cellController5.text =
            cellController6.text = cellController7.text = cellController8.text =
                cellController9.text =
                    cellController10.text = cellController11.text = '';
    isFirstTimeSentenceComplete = true;
    notifyListeners();
  }

  bool isSentenceComplete(BuildContext context) {
    if (isBipWordsList(
      [
        cellController0.text,
        cellController1.text,
        cellController2.text,
        cellController3.text,
        cellController4.text,
        cellController5.text,
        cellController6.text,
        cellController7.text,
        cellController8.text,
        cellController9.text,
        cellController10.text,
        cellController11.text
      ],
    )) {
      if (isFirstTimeSentenceComplete) {
        FocusScope.of(context).unfocus();
      }
      isFirstTimeSentenceComplete = false;
      return true;
    } else {
      return false;
    }
  }

  Future<bool> isSentenceValid() async {
    String inputMnemonic =
        '${cellController0.text} ${cellController1.text} ${cellController2.text} ${cellController3.text} ${cellController4.text} ${cellController5.text} ${cellController6.text} ${cellController7.text} ${cellController8.text} ${cellController9.text} ${cellController10.text} ${cellController11.text}';

    // Needed for bad encoding of UTF-8
    inputMnemonic = inputMnemonic.replaceAll('é', 'é');
    inputMnemonic = inputMnemonic.replaceAll('è', 'è');

    durt.NewWallet? generatedWallet =
        await generateWallet(inputMnemonic, isImport: true);

    if (generatedWallet == null) {
      return false;
    } else {
      generatedMnemonic = inputMnemonic;
      return true;
    }
  }

  void reloadBuild() {
    notifyListeners();
  }
}