import 'dart:io';
import 'package:crypto/crypto.dart';
import 'package:fast_base58/fast_base58.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:gecko/globals.dart';
import 'package:gecko/providers/my_wallets.dart';
import 'package:gecko/models/wallet_data.dart';
import 'package:gecko/providers/substrate_sdk.dart';
import 'package:image_picker/image_picker.dart';
import 'package:provider/provider.dart';
import 'package:truncate/truncate.dart';

class WalletOptionsProvider with ChangeNotifier {
  TextEditingController address = TextEditingController();
  final TextEditingController _newWalletName = TextEditingController();
  bool isWalletUnlock = false;
  bool ischangedPin = false;
  TextEditingController newPin = TextEditingController();
  bool isEditing = false;
  bool isBalanceBlur = false;
  FocusNode walletNameFocus = FocusNode();
  TextEditingController nameController = TextEditingController();
  late bool isDefaultWallet;

  Future<NewWallet>? get badWallet => null;

  int getPinLenght(_walletNbr) {
    return pinLength;
  }

  void _renameWallet(List<int?> _walletID, String _newName,
      {required bool isCesium}) async {
    MyWalletsProvider myWalletClass = MyWalletsProvider();

    WalletData _walletTarget = myWalletClass.getWalletData(_walletID)!;
    _walletTarget.name = _newName;
    await walletBox.put(_walletTarget.key, _walletTarget);

    _newWalletName.text = '';
  }

  bool editWalletName(List<int?> _wID, {bool? isCesium}) {
    bool nameState;
    if (isEditing) {
      if (!nameController.text.contains(':') &&
          nameController.text.length <= 39) {
        _renameWallet(_wID, nameController.text, isCesium: isCesium!);
        nameState = true;
      } else {
        nameState = false;
      }
    } else {
      nameState = true;
    }

    isEditing ? isEditing = false : isEditing = true;
    notifyListeners();
    return nameState;
  }

  Future<int> deleteWallet(context, WalletData wallet) async {
    final bool? _answer = await (_confirmDeletingWallet(context, wallet.name));

    if (_answer!) {
      await walletBox.delete(wallet.key);

      // Navigator.popUntil(
      //   context,
      //   ModalRoute.withName('/mywallets'),
      // );
      Navigator.pop(context);
    }
    return 0;
  }

  Future<bool?> _confirmDeletingWallet(context, _walletName) async {
    return showDialog<bool>(
      context: context,
      barrierDismissible: true, // user must tap button!
      builder: (BuildContext context) {
        return AlertDialog(
          title: Text(
              'Êtes-vous sûr de vouloir supprimer le portefeuille "$_walletName" ?'),
          content: SingleChildScrollView(
            child: ListBody(
              children: const <Widget>[
                Text('Vous pourrez restaurer ce portefeuille plus tard.'),
              ],
            ),
          ),
          actions: <Widget>[
            TextButton(
              child: const Text("Non", key: Key('cancelDeleting')),
              onPressed: () {
                Navigator.pop(context, false);
              },
            ),
            TextButton(
              child: const Text("Oui", key: Key('confirmDeleting')),
              onPressed: () {
                Navigator.pop(context, true);
              },
            ),
          ],
        );
      },
    );
  }

  String getShortPubkey(String pubkey) {
    List<int> pubkeyByte = Base58Decode(pubkey);
    Digest pubkeyS256 = sha256.convert(sha256.convert(pubkeyByte).bytes);
    String pubkeyCheksum = Base58Encode(pubkeyS256.bytes);
    String pubkeyChecksumShort = truncate(pubkeyCheksum, 3,
        omission: "", position: TruncatePosition.end);

    String pubkeyShort = truncate(pubkey, 5,
            omission: String.fromCharCode(0x2026),
            position: TruncatePosition.end) +
        truncate(pubkey, 4, omission: "", position: TruncatePosition.start) +
        ':$pubkeyChecksumShort';

    return pubkeyShort;
  }

  void bluringBalance() {
    isBalanceBlur = !isBalanceBlur;
    notifyListeners();
  }

  Future changeAvatar() async {
    File _image;
    final picker = ImagePicker();

    XFile? pickedFile = await picker.pickImage(source: ImageSource.gallery);

    if (pickedFile != null) {
      _image = File(pickedFile.path);

      ////TODO: Store image on disk, store path in walletBox.imagePath

      log.i(pickedFile.path);
      return _image;
    } else {
      log.w('No image selected.');
      return null;
    }
  }

  void reloadBuild() {
    notifyListeners();
  }

  String? getAddress(int chest, int derivation) {
    String? _address;
    walletBox.toMap().forEach((key, value) {
      if (value.chest == chest && value.derivation == derivation) {
        _address = value.address!;
        return;
      }
    });

    address.text = _address ?? '';

    return _address;
  }
}

Widget balance(BuildContext context, String address, double size) {
  String balanceCache = '';

  return Column(children: <Widget>[
    Consumer<SubstrateSdk>(builder: (context, _sdk, _) {
      return FutureBuilder(
          future: _sdk.getBalance(address),
          builder: (BuildContext context, AsyncSnapshot<num?> _balance) {
            if (_balance.connectionState != ConnectionState.done ||
                _balance.hasError) {
              return Text(balanceCache,
                  style: TextStyle(
                    fontSize: isTall ? size : size * 0.9,
                  ));
            }
            balanceCache = "${_balance.data.toString()} $currencyName";
            return Text(
              balanceCache,
              style: TextStyle(
                fontSize: isTall ? size : 18,
              ),
            );
          });
    }),
  ]);
}