import 'dart:convert';
import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:image_picker/image_picker.dart';
import 'package:medcify/network/api_provider.dart';

import '../../../components/alert.dart';
import '../../../navigation/navigation.dart';

abstract class ChangeUpiQrState{}

class ChangeUpiQrInitial extends ChangeUpiQrState{}
class ChangeUpiQrLoading extends ChangeUpiQrState{}
class ChangeUpiQrSuccess extends ChangeUpiQrState{}
class ChangeUpiQrFailure extends ChangeUpiQrState{
  String error;
  ChangeUpiQrFailure(this.error);
}

class ChangeUpiQrCubit extends Cubit<ChangeUpiQrState> {
  ChangeUpiQrCubit() : super(ChangeUpiQrInitial());
  String? image;
  ImagePicker picker = ImagePicker();

  Future<void> fetchUpiQr() async{
    emit(ChangeUpiQrLoading());
    final response = await ApiProvider.instance.fetchUpiQrImage();
    if(response.status ?? false){
        image = response.image ?? "";
      emit(ChangeUpiQrSuccess());
    }else{
      emit(ChangeUpiQrFailure(response.message ?? "Something went wrong"));
    }
  }

  Future<void> getImage(int pos) async{
    final XFile? value = await picker.pickImage(source: (pos == 0) ? ImageSource.camera : ImageSource.gallery);
    if(value != null){
      final bytes = (await value.readAsBytes()).lengthInBytes;
      final kb = bytes / 1024;
      final mb = kb / 1024;
      if(mb <= 1){
        updateImage(value.path);
      }else{
        showToast("Select image below 1mb");
      }
    }
  }

  Future<void> updateImage(String val) async{
    Navigation.instance.navigate("/loading");
    final response = await ApiProvider.instance.updateUpiQrImage(val);
    Navigation.instance.goBack();
    if(response.status ?? false){
      fetchUpiQr();
    }else{
      showAlert(response.message ?? "Something went wrong");
    }
  }

  void showAlert(String err){
    AlertX.instance.showAlert(
        title: "Error",
        msg: err,
        positiveButtonText: "Done",
        positiveButtonPressed: (){
          Navigation.instance.goBack();
        }
    );
  }

  void showToast(String msg) {
    Fluttertoast.showToast(
        msg: msg,
        toastLength: Toast.LENGTH_SHORT,
        gravity: ToastGravity.BOTTOM,
        timeInSecForIosWeb: 1,
        backgroundColor: Colors.grey.shade200,
        textColor: Colors.black,
        fontSize: 14.0
    );
  }


}