pharmacy_mobile/lib/pages/delete_stock.dart

import 'dart:developer';

import 'package:flutter/material.dart';
import 'package:gap/gap.dart';
import 'package:pharmacy_mobile/functions/checkresult_function.dart';
import 'package:pharmacy_mobile/tables/stocks.dart';
import 'package:pharmacy_mobile/widgets/button_widget.dart';
import 'package:pharmacy_mobile/widgets/dropdown_widget.dart';
import 'package:pharmacy_mobile/widgets/dropdown_wrappermulti_widget.dart';
import 'package:pharmacy_mobile/widgets/form_border_widget.dart';
import 'package:pharmacy_mobile/widgets/input_widget.dart';
import 'package:pharmacy_mobile/widgets/page_background_widget.dart';
import 'package:pharmacy_mobile/widgets/snackbar_widget.dart';
import 'package:pharmacy_mobile/widgets/text_widget.dart';
import 'package:pharmacy_mobile/widgets/title_widget.dart';
import 'package:go_router/go_router.dart';
import 'package:pharmacy_mobile/widgets/warning_widget.dart';

class DeleteStockPage extends StatefulWidget {
  const DeleteStockPage({super.key});

  @override
  State<DeleteStockPage> createState() => _DeleteStockPageState();
}

class _DeleteStockPageState extends State<DeleteStockPage> {
  final _formKey = GlobalKey<FormState>();
  final _stocks = Stocks();
  final _quantityController = TextEditingController();

  late List _stockList = [];
  late String _selectedStock = '';
  late bool _aboveQuantity = false;
  late bool _noStock = false;
  late double _serverQuantity = 0;
  late String _selectedUUID = '';

  void _getStocks() async {
    _stockList = await _stocks.getList();

    if (mounted) {
      final result = await checkResult(context, _stockList, 'Generics');
      if (result) {
        if (mounted) {
          context.push('/main');
        }
      } else {
        setState(() => {});
      }
    }
  }

  void _updateStock(dynamic stock) {
    _selectedStock = stock;
    _getQuantity(_selectedStock);
  }

  void _saveDeletion() async {
    final newQuantity = _serverQuantity - double.parse(_quantityController.text);
    final newQuantityFixed = newQuantity.toStringAsFixed(0);
    // log(newQuantityFixed);
    try {
      _stocks.updateStock(_selectedUUID, 'quantity', newQuantityFixed);
      if (mounted) {
        showNotification(context, '$_selectedStock updated', true);

        WidgetsBinding.instance.addPostFrameCallback((_) {
          if (mounted) {
            context.pop();
          }
        });
      }
    } catch (e) {
      if (mounted) {
        showNotification(context, 'Error: $e', false);
      }
    }
  }

  void _getQuantity(String name) async {
    final uuid = await _stocks.getUUID(name);
    final quantity = await _stocks.getQuantity(uuid);
    _serverQuantity = double.parse(quantity);
    _selectedUUID = uuid;
  }

  void _setQuantity(dynamic quantity) async {
    if (_selectedStock.isEmpty) {
      _noStock = true;
      setState(() {});
    } else {
      _noStock = false;
      if (double.parse(quantity) > _serverQuantity) {
        _aboveQuantity = true;
        setState(() {});
      } else {
        _aboveQuantity = false;
        setState(() {});
      }
    }
  }

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

  @override
  void dispose() {
    _stockList = [];
    _selectedStock = '';
    _quantityController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: PageBackgroundWidget(
            child: Center(
                child: Column(children: [
      const Gap(96),
      const TitleWidget(firstTextSize: 20, secondTextSize: 32),
      const Gap(32),
      const TextWidget(text: 'Remove Stock'),
      const Gap(16),
      FormBorderWidget(
          color: 'red',
          child: Form(
              key: _formKey,
              child: Center(
                child: Column(
                  children: [
                    DropdownWrapperMultiWidget(list: _stockList, text: 'Stocks', children: [
                      DropDownWidget(
                          label: 'Stocks', list: _stockList, listTitle: 'medicine_name', onChanged: _updateStock),
                      const Gap(16),
                      InputWidget(label: 'Quantity', controller: _quantityController, onChanged: _setQuantity),
                      const Gap(32),
                      if (_noStock)
                        WarningWidget(
                          text: 'Removing Disabled',
                          warning: 'Quantity is above sssss',
                        )
                      else if (_aboveQuantity)
                        WarningWidget(
                          text: 'Removing Disabled',
                          warning: 'Quantity is above stocked',
                        )
                      else
                        ButtonWidget(text: 'Remove Stock', onPressed: _saveDeletion)
                    ])
                  ],
                ),
              )))
    ]))));
  }
}