import 'dart:convert';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:provider/provider.dart';

import '../../../controllers/http_status_manger/http_status_manger.dart';
import '../../../controllers/localization/localization.dart';
import '../../../controllers/providers/api/device_transfer_provider.dart';
import '../../../controllers/providers/api/user_provider.dart';
import '../../../controllers/providers/settings/setting_provider.dart';
import '../../../models/device/device_transfer.dart';
import '../../../models/device/device_transfer_info.dart';
import '../../../models/subtitle.dart';
import '../../../models/user.dart';
import '../../app_style/sizing.dart';
import '../../widgets/app_text_form_field.dart';
import '../../widgets/buttons/app_button.dart';
import '../../widgets/e_signature/e_signature.dart';
import '../../widgets/loaders/loading_manager.dart';
import '../../widgets/status/gas_refill/gas_status.dart';
import '../../widgets/titles/app_sub_title.dart';

class UpdateDeviceTransfer extends StatefulWidget {
  final DeviceTransfer? model;
  final bool? isSender;
  const UpdateDeviceTransfer({Key? key, this.model, this.isSender}) : super(key: key);

  @override
  State<UpdateDeviceTransfer> createState() => _UpdateDeviceTransferState();
}

class _UpdateDeviceTransferState extends State<UpdateDeviceTransfer> {
  bool _isLoading = false;
  bool _validate = false;
  Subtitle? _subtitle;
  UserProvider? _userProvider;
  SettingProvider? _settingProvider;
  Uint8List? _signature;
  DeviceTransferProvider? _deviceTransferProvider;
  final TextEditingController _requestedQuantityController = TextEditingController();
  final DeviceTransferInfo _formModel = DeviceTransferInfo();
  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();

  _update() async {
    _validate = true;
    if((_formKey.currentState?.validate()??false)){
      setState(() {});
      return false;
    }
    _formKey.currentState?.save();

    _isLoading =true;
    setState(() {});
    int? status = await _deviceTransferProvider?.updateRequest(
        user: _userProvider?.user??User(),
        host: _settingProvider?.host??"",
        requestId: widget.model?.id??"",
        isSender: widget.isSender??false,
        newModel: _formModel,
        oldModel: widget.model
    );
    _isLoading =false;
    setState(() {});
    if(status!=null && status >= 200 && status < 300){
      Fluttertoast.showToast(
        msg: _subtitle?.requestCompleteSuccessfully??"",
      );
      _validate = false;
      Navigator.of(context).pop();
      Navigator.of(context).pop();
    }else{
      String errorMessage = HttpStatusManger.getStatusMessage(
          status: status, subtitle: _subtitle);
      ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: Text(
                errorMessage
            ),
          )
      );
    }
  }

  @override
  void setState(VoidCallback fn){
    if(mounted) super.setState(() {});
  }

  @override
  void initState() {
    _formModel.fromDetails((widget.isSender??false) ? widget.model?.sender : widget.model?.receiver,
      withSignature: false
    );
    super.initState();
  }

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

  @override
  Widget build(BuildContext context) {
    _subtitle = AppLocalization.of(context)?.subtitle;
    _userProvider = Provider.of<UserProvider>(context);
    _settingProvider = Provider.of<SettingProvider>(context);
    _deviceTransferProvider = Provider.of<DeviceTransferProvider>(context,listen: false);
    return Scaffold(
      key: _scaffoldKey,
      body: Form(
        key: _formKey,
        child: SafeArea(
          child: LoadingManager(
            isLoading: _isLoading,
            isFailedLoading: false,
            stateCode: 200,
            onRefresh: () async {},
            child: SingleChildScrollView(
              padding: EdgeInsets.all(12 * AppStyle.getScaleFactor(context)),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Center(
                    child: Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Text(
                        "Edit Transfer Device",
                        style: Theme.of(context).textTheme.headline5?.copyWith(
                            color: Theme.of(context).primaryColor,
                            fontSize: 28,
                            fontWeight: FontWeight.bold
                        ),
                      ),
                    ),
                  ),
                  const SizedBox(height: 8,),
                  ASubTitle("Comment"),

                  const SizedBox(height: 4,),
                  ATextFormField(
                    initialValue: _formModel.comment??"",
                    textAlign: TextAlign.center,
                    style: Theme.of(context).textTheme.subtitle1,
                    textInputType: TextInputType.text,
                    onSaved: (value){
                      _formModel.comment = value;
                    },
                  ),
                  const SizedBox(height: 8,),
                  ASubTitle(_subtitle?.travelingHours??""),
                  const SizedBox(height: 4,),
                  ATextFormField(
                    initialValue: _formModel.travelingHours??"",
                    textAlign: TextAlign.center,
                    style: Theme.of(context).textTheme.subtitle1,
                    textInputType: TextInputType.number,
                    onSaved: (value){
                      _formModel.travelingHours = value;
                    },
                  ),
                  const SizedBox(height: 8,),
                  ASubTitle(_subtitle?.workingHours??""),
                  const SizedBox(height: 4,),
                  ATextFormField(
                    initialValue: _formModel.workingHours??"",
                    textAlign: TextAlign.center,
                    style: Theme.of(context).textTheme.subtitle1,
                    textInputType: TextInputType.number,
                    onSaved: (value){
                      _formModel.workingHours = value;
                    },
                  ),
                  const SizedBox(height: 8,),
                  ASubTitle(_subtitle?.status??""),
                  const SizedBox(height: 4,),
                  GasStatusMenu(
                    initialValue: _formModel.status,
                    onSelect: (status){
                      _formModel.status = status;
                      setState(() {});
                    },
                  ),
                  const SizedBox(height: 8,),
                  const ASubTitle("Signature"),
                  // if(_validate && _formModel.signature == null)
                  //   ASubTitle(_subtitle.requiredWord,color: Colors.red,),
                  const SizedBox(height: 4,),
                  ESignature(
                    oldSignature: (widget.isSender??false)
                        ? widget.model?.sender?.signature
                        : widget.model?.receiver?.signature,
                     newSignature: _signature,
                     onSaved: (signature){
                        _signature = signature;
                        _formModel.signature = base64Encode(signature);
                      },
                  ),
                  Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: AButton(
                      text: _subtitle?.update??"",
                      onPressed: _update,
                    ),
                  ),
                  const SizedBox(height: 100,)
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}