import 'dart:io';
import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_svg/svg.dart';
import 'package:http/http.dart' as http;
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:stackwallet/pages/monkey/sub_widgets/fetch_monkey_dialog.dart';
import 'package:stackwallet/pages/wallet_view/wallet_view.dart';
import 'package:stackwallet/providers/global/wallets_provider.dart';
import 'package:stackwallet/services/coins/banano/banano_wallet.dart';
import 'package:stackwallet/services/coins/manager.dart';
import 'package:stackwallet/themes/coin_icon_provider.dart';
import 'package:stackwallet/themes/stack_colors.dart';
import 'package:stackwallet/utilities/assets.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
import 'package:stackwallet/utilities/text_styles.dart';
import 'package:stackwallet/widgets/background.dart';
import 'package:stackwallet/widgets/conditional_parent.dart';
import 'package:stackwallet/widgets/custom_buttons/app_bar_icon_button.dart';
import 'package:stackwallet/widgets/desktop/primary_button.dart';
import 'package:stackwallet/widgets/desktop/secondary_button.dart';
import 'package:stackwallet/widgets/stack_dialog.dart';

class MonkeyView extends ConsumerStatefulWidget {
  const MonkeyView({
    Key? key,
    required this.walletId,
    required this.managerProvider,
  }) : super(key: key);

  static const String routeName = "/monkey";
  static const double navBarHeight = 65.0;

  final String walletId;
  final ChangeNotifierProvider<Manager> managerProvider;

  @override
  ConsumerState<MonkeyView> createState() => _MonkeyViewState();
}

class _MonkeyViewState extends ConsumerState<MonkeyView> {
  late final String walletId;
  late final ChangeNotifierProvider<Manager> managerProvider;

  String receivingAddress = "";

  void getMonkeyImage(String address) async {
    if (address.isEmpty) {
      //address shouldn't be empty
      return;
    }

    final manager = ref.watch(walletsChangeNotifierProvider
        .select((value) => value.getManager(walletId)));

    final http.Response response = await http
        .get(Uri.parse('https://monkey.banano.cc/api/v1/monkey/$address'));

    if (response.statusCode == 200) {
      final decodedResponse = response.bodyBytes;
      await (manager.wallet as BananoWallet)
          .updateMonkeyImageBytes(decodedResponse);
    } else {
      throw Exception("Failed to get MonKey");
    }
  }

  void getMonkeySVG(String address) async {
    if (address.isEmpty) {
      //address shouldn't be empty
      return;
    }

    final http.Response response = await http
        .get(Uri.parse('https://monkey.banano.cc/api/v1/monkey/$address'));

    if (response.statusCode == 200) {
      final decodedResponse = response.bodyBytes;
      Directory directory = await getApplicationDocumentsDirectory();
      late Directory sampleFolder;

      if (Platform.isAndroid) {
        directory = Directory("/storage/emulated/0/");
        sampleFolder = Directory('${directory!.path}Documents');
      } else if (Platform.isIOS) {
        sampleFolder = Directory(directory!.path);
      } else if (Platform.isLinux) {
        sampleFolder = Directory('${directory!.path}Documents');
      } else if (Platform.isWindows) {
        sampleFolder = Directory('${directory!.path}Documents');
      } else if (Platform.isMacOS) {
        sampleFolder = Directory('${directory!.path}Documents');
      }

      try {
        if (!sampleFolder.existsSync()) {
          sampleFolder.createSync(recursive: true);
        }
      } catch (e, s) {
        // todo: come back to this
        debugPrint("$e $s");
      }

      final docPath = sampleFolder.path;
      final filePath = "$docPath/monkey.svg";

      File imgFile = File(filePath);
      await imgFile.writeAsBytes(decodedResponse);
    } else {
      throw Exception("Failed to get MonKey");
    }
  }

  void getMonkeyPNG(String address) async {
    if (address.isEmpty) {
      //address shouldn't be empty
      return;
    }

    final http.Response response = await http.get(Uri.parse(
        'https://monkey.banano.cc/api/v1/monkey/${address}?format=png&size=512&background=false'));

    if (response.statusCode == 200) {
      if (Platform.isAndroid) {
        await Permission.storage.request();
      }

      final decodedResponse = response.bodyBytes;
      Directory directory = await getApplicationDocumentsDirectory();
      late Directory sampleFolder;

      if (Platform.isAndroid) {
        directory = Directory("/storage/emulated/0/");
        sampleFolder = Directory('${directory!.path}Documents');
      } else if (Platform.isIOS) {
        sampleFolder = Directory(directory!.path);
      } else if (Platform.isLinux) {
        sampleFolder = Directory('${directory!.path}Documents');
      } else if (Platform.isWindows) {
        sampleFolder = Directory('${directory!.path}Documents');
      } else if (Platform.isMacOS) {
        sampleFolder = Directory('${directory!.path}Documents');
      }

      try {
        if (!sampleFolder.existsSync()) {
          sampleFolder.createSync(recursive: true);
        }
      } catch (e, s) {
        // todo: come back to this
        debugPrint("$e $s");
      }

      final docPath = sampleFolder.path;
      final filePath = "$docPath/monkey.png";

      File imgFile = File(filePath);
      await imgFile.writeAsBytes(decodedResponse);
    } else {
      throw Exception("Failed to get MonKey");
    }
  }

  @override
  void initState() {
    walletId = widget.walletId;
    managerProvider = widget.managerProvider;

    WidgetsBinding.instance.addPostFrameCallback((timeStamp) async {
      final address = await ref
          .read(walletsChangeNotifierProvider)
          .getManager(walletId)
          .currentReceivingAddress;
      setState(() {
        receivingAddress = address;
      });
    });

    super.initState();
  }

  @override
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final Coin coin = ref.watch(managerProvider.select((value) => value.coin));
    final manager = ref.watch(walletsChangeNotifierProvider
        .select((value) => value.getManager(widget.walletId)));

    List<int>? imageBytes;
    imageBytes = (manager.wallet as BananoWallet).getMonkeyImageBytes();

    return Background(
      child: Stack(
        children: [
          Scaffold(
            appBar: AppBar(
              leading: AppBarBackButton(
                onPressed: () {
                  Navigator.of(context).pop();
                },
              ),
              title: Text(
                "MonKey",
                style: STextStyles.navBarTitle(context),
              ),
              actions: [
                AspectRatio(
                  aspectRatio: 1,
                  child: AppBarIconButton(
                      icon: SvgPicture.asset(Assets.svg.circleQuestion),
                      onPressed: () {
                        showDialog<dynamic>(
                            context: context,
                            useSafeArea: false,
                            barrierDismissible: true,
                            builder: (context) {
                              return const StackOkDialog(
                                title: "About MonKeys",
                                message:
                                    "A MonKey is a visual representation of your Banano address.",
                              );
                            });
                      }),
                ),
              ],
            ),
            body: ConditionalParent(
              condition: imageBytes != null,
              builder: (child) => Column(
                children: [
                  const Spacer(
                    flex: 1,
                  ),
                  if (imageBytes != null)
                    Container(
                      child: SvgPicture.memory(Uint8List.fromList(imageBytes!)),
                      width: 300,
                      height: 300,
                    ),
                  const Spacer(
                    flex: 1,
                  ),
                  Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: Column(
                      children: [
                        SecondaryButton(
                          label: "Download as SVG",
                          onPressed: () async {
                            getMonkeySVG(receivingAddress);
                          },
                        ),
                        const SizedBox(height: 12),
                        SecondaryButton(
                          label: "Download as PNG",
                          onPressed: () {
                            getMonkeyPNG(receivingAddress);
                          },
                        ),
                      ],
                    ),
                  ),
                  // child,
                ],
              ),
              child: Column(
                children: [
                  const Spacer(
                    flex: 4,
                  ),
                  Center(
                    child: Column(
                      children: [
                        Opacity(
                          opacity: 0.2,
                          child: SvgPicture.file(
                            File(
                              ref.watch(coinIconProvider(coin)),
                            ),
                            width: 200,
                            height: 200,
                          ),
                        ),
                        const SizedBox(
                          height: 40,
                        ),
                        Text(
                          "You do not have a MonKey yet. \nFetch yours now!",
                          style: STextStyles.smallMed14(context).copyWith(
                            color: Theme.of(context)
                                .extension<StackColors>()!
                                .textDark3,
                          ),
                          textAlign: TextAlign.center,
                        ),
                      ],
                    ),
                  ),
                  const Spacer(
                    flex: 6,
                  ),
                  Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: PrimaryButton(
                      label: "Fetch MonKey",
                      onPressed: () async {
                        getMonkeyImage(receivingAddress);

                        showDialog<dynamic>(
                          context: context,
                          useSafeArea: false,
                          barrierDismissible: false,
                          builder: (context) {
                            return FetchMonkeyDialog(
                              onCancel: () async {
                                Navigator.of(context).pop();
                              },
                            );
                          },
                        );

                        await Future<void>.delayed(const Duration(seconds: 2));

                        Navigator.of(context).popUntil(
                          ModalRoute.withName(WalletView.routeName),
                        );
                      },
                    ),
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}