import 'package:fcs/domain/entities/cargo_type.dart';
import 'package:fcs/domain/entities/carton.dart';
import 'package:fcs/domain/entities/custom_duty.dart';
import 'package:fcs/domain/entities/discount.dart';
import 'package:fcs/domain/entities/fcs_shipment.dart';
import 'package:fcs/domain/entities/invoice.dart';
import 'package:fcs/domain/entities/payment_method.dart';
import 'package:fcs/domain/entities/user.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:fcs/pages/carton/model/carton_model.dart';
import 'package:fcs/pages/discount/discount_list.dart';
import 'package:fcs/pages/discount/model/discount_model.dart';
import 'package:fcs/pages/invoice/invoice_cargo_table.dart';
import 'package:fcs/pages/invoice/invoice_carton_table.dart';
import 'package:fcs/pages/main/model/main_model.dart';
import 'package:fcs/pages/main/util.dart';
import 'package:fcs/pages/payment_methods/model/payment_method_model.dart';
import 'package:fcs/pages/rates/custom_list.dart';
import 'package:fcs/pages/rates/model/shipment_rate_model.dart';
import 'package:fcs/pages/widgets/display_text.dart';
import 'package:fcs/pages/widgets/fcs_id_icon.dart';
import 'package:fcs/pages/widgets/local_dropdown.dart';
import 'package:fcs/pages/widgets/local_text.dart';
import 'package:fcs/pages/widgets/local_title.dart';
import 'package:fcs/pages/widgets/multi_img_controller.dart';
import 'package:fcs/pages/widgets/progress.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_icons/flutter_icons.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:intl/intl.dart';
import 'package:provider/provider.dart';

import 'invoice_custom_table.dart';

class InvoiceEditor extends StatefulWidget {
  final Invoice invoice;
  final User customer;
  final FcsShipment fcsShipment;
  InvoiceEditor({this.invoice, this.customer, this.fcsShipment});

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

class _InvoiceEditorState extends State<InvoiceEditor> {
  User user;

  var dateFormatter = new DateFormat('dd MMM yyyy');
  TextEditingController _invoiceNumberController = new TextEditingController();
  TextEditingController _dateController = new TextEditingController();
  TextEditingController _nameController = new TextEditingController();
  TextEditingController _phoneController = new TextEditingController();
  TextEditingController _discountController = new TextEditingController();
  TextEditingController _amountController = new TextEditingController();
  TextEditingController _statusController = new TextEditingController();
  TextEditingController _handlingFeeController = new TextEditingController();
  TextEditingController _customFeeController = new TextEditingController();
  MultiImgController multiImgController = MultiImgController();
  TextEditingController _descriptionController = new TextEditingController();
  TextEditingController _balanceController = new TextEditingController();

  Invoice _invoice;
  bool _isLoading = false;
  List<Carton> _cartons = [];
  bool isSwitched = false;
  int deliveryfee = 0;
  double customFee = 10.0;
  double handlingFee = 10.0; // it will get from shipment
  double total = 0;
  Discount _discount;
  bool _isNew = false;
  Discount selectedDiscount;
  int selectedDiscountAmt;
  PaymentMethod _paymentMethod;
  double volumetricRatio = 0;

  List<Carton> selectedBoxes = [];
  List<CustomDuty> customs = [];

  // List<CargoType> _cargoTypes = [
  //   CargoType(name: 'General Cargo', weight: 33, rate: 6),
  //   CargoType(name: 'Medicine', weight: 33, rate: 7),
  //   CargoType(name: 'Dangerous Cargo', weight: 33, rate: 8)
  // ];

  @override
  void initState() {
    super.initState();

    volumetricRatio = Provider.of<ShipmentRateModel>(context, listen: false)
        .rate
        .volumetricRatio;

    if (widget.invoice != null) {
      _isNew = false;
      _invoice = widget.invoice;
      _invoiceNumberController.text = _invoice.invoiceNumber;
      _dateController.text = dateFormatter.format(_invoice.invoiceDate);
      _nameController.text = _invoice.customerName;
      _phoneController.text = _invoice.customerPhoneNumber;
      // _amountController.text = _invoice.getAmount.toString();
      _amountController.text = _invoice.amount.toString();
      _statusController.text = _invoice.status.toString();
      _handlingFeeController.text = '0';
      _customFeeController.text = '0';
      // multiImgController.setImageUrls = _receipts;
      _descriptionController.text = 'For Electronics goods';
      _balanceController.text =
          (_invoice.amount - _invoice.receipts[0].amount).toString();
      // _boxes = _invoice.packages;
    } else {
      _isNew = true;
      _dateController.text = dateFormatter.format(DateTime.now());
      _amountController.text = '0';
      _handlingFeeController.text = '0';
      _customFeeController.text = '0';
      _descriptionController.text = '';
      _balanceController.text = '0';
      _invoice = Invoice(customDuties: [], cartons: []);
    }

    if (widget.customer != null && widget.invoice == null) {
      user = widget.customer;
      setState(() {
        _isNew = true;
      });
    }

    _loadCartons();
  }

  _loadCartons() async {
    CartonModel cartonModel = Provider.of<CartonModel>(context, listen: false);
    List<Carton> cartons = await cartonModel.getCartonsForInvoice(
        widget.fcsShipment.id, widget.customer.id);
    setState(() {
      _cartons = cartons;
    });
  }

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

  @override
  Widget build(BuildContext context) {
    var mainModel = Provider.of<MainModel>(context);
    var discountModel = Provider.of<DiscountModel>(context);
    var paymentMethodModel = Provider.of<PaymentMethodModel>(context);
    var rateModel = Provider.of<ShipmentRateModel>(context);
    var rate = rateModel.rate;

    final nameBox = DisplayText(
        iconData: Feather.user,
        labelTextKey: 'invoice.customer_name',
        text: user != null ? user.name : 'Ko Nyi');

    final statusBox = DisplayText(
        text: _statusController.text,
        iconData: Icons.av_timer,
        labelTextKey: 'invoice.status');

    final fcsIDBox = DisplayText(
      text: user != null ? user.fcsID : "FCS-KRUTUG",
      labelTextKey: "box.fcs.id",
      icon: FcsIDIcon(),
    );
    final cartonTable = InvoiceCartonTable(
      cartons: _cartons,
      rate: rate,
      onSelect: (c, checked) {
        setState(() {
          c.isChecked = checked;
        });
        if (checked) {
          _invoice.cartons.add(c);
        } else {
          _invoice.cartons.remove(c);
        }
      },
    );
    final customTableHeaderBox = LocalTitle(
        textKey: "invoice.custom_fee",
        trailing: IconButton(
            icon: Icon(Icons.add_circle, color: primaryColor),
            onPressed: () async {
              CustomDuty customDuty = await Navigator.of(context).push(
                  CupertinoPageRoute(
                      builder: (context) => CustomList(selected: true)));
              _addCustom(customDuty);
            }));
    final customTableBox = InvoiceCustomTable(
      customDuties: _invoice.customDuties,
      onAdd: (c) => _addCustom(c),
      onRemove: (c) => _removeCustom(c),
    );
    var paymentTypesBox = LocalDropdown<PaymentMethod>(
      callback: (v) {
        setState(() {
          _paymentMethod = v;
        });
      },
      labelKey: "invoice.payment_method",
      iconData: FontAwesome.money,
      display: (u) => u.name,
      selectedValue: _paymentMethod,
      values: paymentMethodModel.paymentMethods,
    );
    final cargoTypeTableBox = InvoiceCargoTable(
      invoice: _invoice,
      rate: rate,
      deliveryFeeSelected: (selected) {
        setState(() {
          if (selected) {
            _invoice.deliveryFee = rate.deliveryFee;
          } else {
            _invoice.deliveryFee = 0;
          }
        });
      },
      discountSelected: (discount) {
        setState(() {
          _invoice.discount = discount;
        });
      },
    );

    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
        appBar: AppBar(
          centerTitle: true,
          leading: new IconButton(
            icon: new Icon(CupertinoIcons.back, color: primaryColor),
            onPressed: () => Navigator.of(context).pop(),
          ),
          backgroundColor: Colors.white,
          shadowColor: Colors.transparent,
          title: LocalText(context, 'invoice.form.title',
              color: primaryColor, fontSize: 20),
        ),
        body: Padding(
          padding: const EdgeInsets.all(8.0),
          child: ListView(
            children: <Widget>[
              LocalTitle(textKey: "invoice.customer_info"),
              DisplayText(
                  labelTextKey: 'invoice.date',
                  iconData: Icons.date_range,
                  text: _dateController.text),
              widget.invoice == null
                  ? Container()
                  : DisplayText(
                      labelTextKey: 'invoice.number',
                      iconData: FontAwesomeIcons.fileInvoice,
                      text: _invoiceNumberController.text),
              fcsIDBox,
              nameBox,
              _isNew ? Container() : statusBox,
              SizedBox(height: 20),
              customTableHeaderBox,
              customTableBox,
              SizedBox(height: 20),
              cartonTable,
              LocalTitle(textKey: "invoice.cargo_type"),
              cargoTypeTableBox,
              // Column(children: getCargoTableByBox(context)),
              SizedBox(height: 20),
              paymentTypesBox,
              SizedBox(height: 20),
              _isNew
                  ? Container()
                  : LocalTitle(
                      textKey: "invoice.payment_attachment",
                      trailing: IconButton(
                          icon: Icon(Icons.add_circle, color: primaryColor),
                          onPressed: () async {})),
              widget.invoice == null
                  ? fcsButton(
                      context, getLocalString(context, 'invoice.btn_create'))
                  : mainModel.isCustomer()
                      ? Container()
                      : Container(
                          child: Column(
                          children: <Widget>[
                            fcsButton(context,
                                getLocalString(context, 'invoice.btn_save'))
                          ],
                        )),
              _isNew
                  ? Container()
                  : fcsButton(context,
                      getLocalString(context, 'invoice.btn_payment_receipt'))
            ],
          ),
        ),
      ),
    );
  }

  getTotalBalance(total) {
    double balance = 0;
    double custom = customFee != 0 ? customFee.toDouble() : 0;
    double discount = _discount != null ? _discount.amount.toDouble() : 0;
    double deliveryFee = deliveryfee != 0 ? deliveryfee.toDouble() : 0;
    balance = (total + custom + deliveryFee) - discount;
    return balance;
  }

  _addCustom(CustomDuty customDuty) {
    if (customDuty == null) return;
    setState(() {
      _invoice.customDuties.remove(customDuty);
      _invoice.customDuties.add(customDuty);
    });
  }

  _removeCustom(CustomDuty customDuty) {
    setState(() {
      _invoice.customDuties.remove(customDuty);
    });
  }

  _save() {}
}