import 'dart:convert';

import 'package:farm_tpf/custom_model/Harvest.dart';
import 'package:farm_tpf/custom_model/Packing.dart';
import 'package:farm_tpf/data/api/app_exception.dart';
import 'package:farm_tpf/data/repository/repository.dart';
import 'package:farm_tpf/presentation/custom_widgets/bloc/media_helper_bloc.dart';
import 'package:farm_tpf/presentation/custom_widgets/widget_loading.dart';
import 'package:farm_tpf/presentation/custom_widgets/widget_media_picker.dart';
import 'package:farm_tpf/presentation/custom_widgets/widget_utils.dart';
import 'package:farm_tpf/presentation/screens/actions/bloc/action_detail_bloc.dart';
import 'package:farm_tpf/presentation/screens/actions/bloc_get_harvest.dart';
import 'package:farm_tpf/presentation/screens/actions/state_management_helper/change_file_controller.dart';
import 'package:farm_tpf/utils/const_common.dart';
import 'package:farm_tpf/utils/const_string.dart';
import 'package:farm_tpf/utils/const_style.dart';
import 'package:farm_tpf/utils/pref.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
import 'package:get/get.dart';
import 'package:intl/intl.dart';
import 'package:keyboard_dismisser/keyboard_dismisser.dart';
import 'package:pattern_formatter/pattern_formatter.dart';
import 'package:farm_tpf/utils/formatter.dart';

import '../util_action.dart';

class EditActionPackingScreen extends StatefulWidget {
  final int cropId;
  final bool isEdit;
  final int activityId;
  final int harvestId;
  EditActionPackingScreen(
      {@required this.cropId,
      this.isEdit = false,
      this.activityId,
      this.harvestId});

  @override
  _EditActionPackingScreenState createState() =>
      _EditActionPackingScreenState();
}

class _EditActionPackingScreenState extends State<EditActionPackingScreen> {
  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
  final _repository = Repository();
  GlobalKey<FormState> _formKey = GlobalKey();
  bool _autoValidate = false;
  Packing _packing = Packing();
  TextEditingController _l1Controller = TextEditingController();
  TextEditingController _l2Controller = TextEditingController();
  TextEditingController _l3Controller = TextEditingController();
  TextEditingController _removedQuantityController = TextEditingController();
  TextEditingController _descriptionController = TextEditingController();
  final _executeByController = TextEditingController();

  var pref = LocalPref();
  List<Harvest> _harvests = List<Harvest>();
  Harvest harvestValue;
  String executeTimeView;
  DateTime executeTime = DateTime.now();
  List<String> filePaths = List<String>();
  var changeFileController = Get.put(ChangeFileController());

  Future<Null> getSharedPrefs() async {
    var currentFullName = await pref.getString(DATA_CONST.CURRENT_FULL_NAME);
    _executeByController.text = currentFullName ?? "";
  }

  @override
  void initState() {
    super.initState();
    getSharedPrefs();
    changeFileController.initValue();
    var parsedExecuteDate =
        DateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'").format(executeTime);
    _packing.executeDate = "$parsedExecuteDate";
    executeTimeView = DateFormat("dd/MM/yyyy HH:mm").format(executeTime);
    _packing.cropId = widget.cropId;

    if (!widget.isEdit) {
      getHarvestBloc.getHarvests((data) {
        _harvests = data;
        for (var item in _harvests) {
          if (item.id == widget.harvestId) {
            harvestValue = item;
            break;
          }
        }
      }, (err) {});
    }
  }

  _validateInputs() async {
    if (_formKey.currentState.validate()) {
      _formKey.currentState.save();
      LoadingDialog.showLoadingDialog(context);
      filePaths = Get.find<ChangeFileController>().files;
      try {
        var activityPacking = jsonEncode(_packing.toJson()).toString();
        //ADD NEW
        if (_packing.activityId == null) {
          _repository.createAction((value) {
            LoadingDialog.hideLoadingDialog(context);
            Get.back(result: value);
            Utils.showSnackBarSuccess(message: label_add_success);
          }, (error) {
            LoadingDialog.hideLoadingDialog(context);
            Utils.showSnackBarError(message: AppException.handleError(error));
          },
              apiAddAction: ConstCommon.apiAddPacking,
              paramActivity: ConstCommon.paramsActionPacking,
              activityAction: activityPacking,
              filePaths: filePaths);
        } else {
          //UPDATE
          _repository.updateAction((value) {
            LoadingDialog.hideLoadingDialog(context);
            Get.back(result: value);
            Utils.showSnackBarSuccess(message: label_update_success);
          }, (error) {
            LoadingDialog.hideLoadingDialog(context);
            Utils.showSnackBarError(message: AppException.handleError(error));
          },
              apiUpdateAction: ConstCommon.apiUpdatePacking,
              paramActivity: ConstCommon.paramsActionPacking,
              activityAction: activityPacking,
              filePaths: filePaths);
        }
      } catch (e) {
        LoadingDialog.hideLoadingDialog(context);
        print(e.toString());
      }
    } else {
      _autoValidate = true;
    }
  }

  List<DropdownMenuItem<Harvest>> _buildDropMenu(List<Harvest> actions) {
    return actions
        .map((action) => DropdownMenuItem<Harvest>(
              child: Text("Mã thu hoạch " + action.id.toString()),
              value: action,
            ))
        .toList();
  }

  Widget _dropdownHarvest() {
    return StreamBuilder(
      stream: getHarvestBloc.actions,
      builder: (context, AsyncSnapshot<dynamic> snapshot) {
        if (snapshot.hasData) {
          return DropdownButtonFormField<Harvest>(
              value: harvestValue,
              hint: Text("Mã thu hoạch *"),
              onChanged: (Harvest newValue) {
                setState(() {
                  harvestValue = newValue;
                  _packing.harvestId = newValue.id;
                });
              },
              validator: (value) => value == null ? "Mã thu hoạch" : null,
              isExpanded: true,
              items: _buildDropMenu(_harvests));
        } else {
          return Center(
            child: CircularProgressIndicator(),
          );
        }
      },
    );
  }

  Widget _btnExecuteTimePicker() {
    return FlatButton(
        padding: EdgeInsets.only(top: 0.0, right: 0.0, bottom: 0.0, left: 0.0),
        onPressed: () {
          DatePicker.showDateTimePicker(context,
              showTitleActions: true, onChanged: (date) {}, onConfirm: (date) {
            setState(() {
              var parsedDate =
                  DateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'").format(date);
              _packing.executeDate = "$parsedDate";
              executeTimeView = DateFormat("dd/MM/yyyy HH:mm").format(date);
            });
          }, currentTime: executeTime, locale: LocaleType.vi);
        },
        child: Container(
            padding:
                EdgeInsets.only(top: 0.0, right: 0.0, bottom: 10.5, left: 0.0),
            decoration: BoxDecoration(
              border: kBorderTextField,
            ),
            child: Row(
              children: [
                Expanded(
                    child: Text(
                  //TODO: check condition
                  executeTimeView == null ? "$executeTime" : executeTimeView,
                  style: TextStyle(fontSize: 14.0, color: Colors.black87),
                )),
                Icon(
                  Icons.date_range,
                  color: Colors.blue,
                ),
              ],
            )));
  }

  Widget _l1Field() {
    return TextFormField(
      keyboardType: TextInputType.numberWithOptions(decimal: true),
      inputFormatters: [
        ThousandsFormatter(
            formatter: NumberFormat("#,###.##", "es"), allowFraction: true)
      ],
      decoration: InputDecoration(labelText: "Số lượng/khối lượng loại 1"),
      controller: _l1Controller,
      onSaved: (newValue) {
        _packing.quantityLv1 = newValue.parseDoubleThousand();
      },
    );
  }

  Widget _l2Field() {
    return TextFormField(
      keyboardType: TextInputType.numberWithOptions(decimal: true),
      inputFormatters: [
        ThousandsFormatter(
            formatter: NumberFormat("#,###.##", "es"), allowFraction: true)
      ],
      decoration: InputDecoration(labelText: "Số lượng/khối lượng loại 2"),
      controller: _l2Controller,
      onSaved: (newValue) {
        _packing.quantityLv2 = newValue.parseDoubleThousand();
      },
    );
  }

  Widget _l3Field() {
    return TextFormField(
      keyboardType: TextInputType.numberWithOptions(decimal: true),
      inputFormatters: [
        ThousandsFormatter(
            formatter: NumberFormat("#,###.##", "es"), allowFraction: true)
      ],
      decoration: InputDecoration(labelText: "Số lượng/khối lượng loại 3"),
      controller: _l3Controller,
      onSaved: (newValue) {
        _packing.quantityLv3 = newValue.parseDoubleThousand();
      },
    );
  }

  Widget _removedQuantityField() {
    return TextFormField(
      keyboardType: TextInputType.numberWithOptions(decimal: true),
      inputFormatters: [
        ThousandsFormatter(
            formatter: NumberFormat("#,###.##", "es"), allowFraction: true)
      ],
      decoration: InputDecoration(labelText: "Số lượng/khối lượng loại bỏ"),
      controller: _removedQuantityController,
      onSaved: (newValue) {
        _packing.removedQuantity = newValue.parseDoubleThousand();
      },
    );
  }

  Widget _descriptionField() {
    return TextFormField(
      keyboardType: TextInputType.text,
      decoration: InputDecoration(labelText: "Ghi chú"),
      controller: _descriptionController,
      onSaved: (newValue) {
        _packing.description = newValue;
      },
    );
  }

  Widget _executeByField() {
    return TextFormField(
      keyboardType: TextInputType.text,
      decoration: InputDecoration(labelText: "Người thực hiện"),
      enabled: false,
      controller: _executeByController,
      onSaved: (newValue) {},
    );
  }

  _actionAppBar() {
    IconButton iconButton;
    if (1 == 1) {
      iconButton = IconButton(
        icon: Icon(
          Icons.done,
          color: Colors.black,
        ),
        onPressed: () {
          FocusScopeNode currentFocus = FocusScope.of(context);
          if (!currentFocus.hasPrimaryFocus) {
            currentFocus.unfocus();
          }
          _validateInputs();
        },
      );
      return <Widget>[iconButton];
    }
    return <Widget>[Container()];
  }

  @override
  Widget build(BuildContext context) => KeyboardDismisser(
          gestures: [
            GestureType.onTap,
            GestureType.onPanUpdateDownDirection,
          ],
          child: Scaffold(
              key: _scaffoldKey,
              appBar: AppBar(
                  centerTitle: true,
                  title: Text(plot_action_packing),
                  actions: _actionAppBar()),
              body: KeyboardDismisser(
                  child: MultiBlocProvider(
                providers: [
                  BlocProvider<ActionDetailBloc>(
                      create: (context) =>
                          ActionDetailBloc(repository: Repository())
                            ..add(FetchData(
                                isNeedFetchData: widget.isEdit,
                                apiActivity: ConstCommon.apiDetailPacking,
                                activityId: widget.activityId))),
                  BlocProvider<MediaHelperBloc>(
                    create: (context) =>
                        MediaHelperBloc()..add(ChangeListMedia(items: [])),
                  )
                ],
                child: Form(
                    key: _formKey,
                    autovalidate: _autoValidate,
                    child: SingleChildScrollView(
                      padding: EdgeInsets.all(8.0),
                      child: BlocConsumer<ActionDetailBloc, ActionDetailState>(
                        listener: (context, state) async {
                          if (state is ActionDetailFailure) {
                            LoadingDialog.hideLoadingDialog(context);
                          } else if (state is ActionDetailSuccess) {
                            LoadingDialog.hideLoadingDialog(context);
                            print(state.item);
                            _packing = Packing.fromJson(state.item);
                            _packing.activityId = widget.activityId;
                            _l1Controller.text =
                                _packing.quantityLv1.formatNumtoStringDecimal();
                            _l2Controller.text =
                                _packing.quantityLv2.formatNumtoStringDecimal();
                            _l3Controller.text =
                                _packing.quantityLv3.formatNumtoStringDecimal();
                            _removedQuantityController.text = _packing
                                .removedQuantity
                                .formatNumtoStringDecimal();
                            _descriptionController.text =
                                _packing.description ?? "";
                            _executeByController.text = _packing.executeBy;

                            //select harvest
                            getHarvestBloc.getHarvests((data) {
                              _harvests = data;
                              for (var item in _harvests) {
                                if (item.id == _packing.harvestId) {
                                  harvestValue = item;
                                  break;
                                }
                              }
                            }, (err) {});

                            try {
                              executeTime =
                                  DateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'")
                                      .parse(_packing.executeDate);
                              executeTimeView = DateFormat("dd/MM/yyyy HH:mm")
                                  .format(executeTime);
                            } catch (_) {}
                            //Show media
                            if (_packing.media != null) {
                              await UtilAction.cacheFiles(_packing.media)
                                  .then((value) {
                                BlocProvider.of<MediaHelperBloc>(context)
                                    .add(ChangeListMedia(items: value));
                              }).whenComplete(() {
                                print("completed");
                              });
                            }
                          } else if (state is ActionDetailInitial) {
                          } else if (state is ActionDetailLoading) {
                            LoadingDialog.showLoadingDialog(context);
                          }
                        },
                        builder: (context, state) {
                          return Column(
                            children: <Widget>[
                              Container(
                                width: double.infinity,
                                child: Text(
                                  "Ngày thực hiện *",
                                  style: TextStyle(
                                      color: Colors.black54, fontSize: 13.0),
                                ),
                              ),
                              _btnExecuteTimePicker(),
                              SizedBox(
                                height: 8.0,
                              ),
                              _dropdownHarvest(),
                              SizedBox(
                                height: 8.0,
                              ),
                              _l1Field(),
                              SizedBox(
                                height: 8.0,
                              ),
                              _l2Field(),
                              SizedBox(
                                height: 8.0,
                              ),
                              _l3Field(),
                              SizedBox(
                                height: 8.0,
                              ),
                              _removedQuantityField(),
                              SizedBox(
                                height: 8.0,
                              ),
                              _descriptionField(),
                              SizedBox(
                                height: 8.0,
                              ),
                              _executeByField(),
                              SizedBox(
                                height: 8.0,
                              ),
                              BlocBuilder<MediaHelperBloc, MediaHelperState>(
                                  builder: (context, state) {
                                if (state is MediaHelperSuccess) {
                                  return WidgetMediaPicker(
                                      currentItems: state.items,
                                      onChangeFiles: (filePaths) async {
                                        Get.find<ChangeFileController>()
                                            .addAllFile(filePaths);
                                      });
                                } else {
                                  return Center(
                                      child: CircularProgressIndicator());
                                }
                              }),
                            ],
                          );
                        },
                      ),
                    )),
              ))));
  @override
  void dispose() {
    _l1Controller.dispose();
    _l2Controller.dispose();
    _l3Controller.dispose();
    _removedQuantityController.dispose();
    _descriptionController.dispose();
    _executeByController.dispose();
    super.dispose();
  }
}