mirrored_repositories/Expense-Calculator/lib
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

class NewTransaction extends StatefulWidget {
  final Function addTx;

  NewTransaction(this.addTx);

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

class _NewTransactionState extends State<NewTransaction> {
  final _titleController = TextEditingController();
  final _amountController = TextEditingController();
  late DateTime _selectedDate;

  @override
  void initState() {
    // TODO: implement initState
    _selectedDate = DateTime.now();
    super.initState();
  }

  void _submitData() {
    if (_amountController.text.isEmpty) {
      return;
    }
    final enteredTitle = _titleController.text;
    final enteredAmount = double.parse(_amountController.text);

    if (enteredTitle.isEmpty || enteredAmount <= 0) {
      return;
    }

    widget.addTx(
      enteredTitle,
      enteredAmount,
      _selectedDate,
    );

    Navigator.of(context).pop();
  }

  void _presentDatePicker() {
    showDatePicker(
      context: context,
      initialDate: DateTime.now(),
      firstDate: DateTime(2019),
      lastDate: DateTime.now(),
    ).then((pickedDate) {
      if (pickedDate == null) {
        return;
      }
      setState(() {
        _selectedDate = pickedDate;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Card(
      elevation: 5,
      child: Container(
        padding: const EdgeInsets.all(10),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.end,
          children: <Widget>[
            TextField(
              decoration: const InputDecoration(labelText: 'Title'),
              controller: _titleController,
              onSubmitted: (_) => _submitData(),
              // onChanged: (val) {
              //   titleInput = val;
              // },
            ),
            TextField(
              decoration: const InputDecoration(labelText: 'Amount'),
              controller: _amountController,
              keyboardType: TextInputType.number,
              onSubmitted: (_) => _submitData(),
              // onChanged: (val) => amountInput = val,
            ),
            SizedBox(
              height: 70,
              child: Row(
                children: <Widget>[
                  Expanded(
                    child: Text(
                      _selectedDate == null
                          ? 'No Date Chosen!'
                          : 'Picked Date: ${DateFormat.yMd().format(_selectedDate)}',
                    ),
                  ),
                  TextButton(
                    style: ButtonStyle(
                        backgroundColor: MaterialStateProperty.all<Color>(
                            Theme.of(context).primaryColor)),
                    onPressed: _presentDatePicker,
                    child: const Text(
                      'Choose Date',
                      style: TextStyle(
                          fontWeight: FontWeight.bold, color: Colors.white),
                    ),
                  ),
                ],
              ),
            ),
            ElevatedButton(
              onPressed: _submitData,
              style: ButtonStyle(
                foregroundColor: MaterialStateProperty.all<Color?>(
                    Theme.of(context).textTheme.button!.color),
                backgroundColor: MaterialStateProperty.all<Color>(
                    Theme.of(context).primaryColor),
              ),
              child: const Text(
                'Add Transaction',
                style:
                    TextStyle(fontWeight: FontWeight.bold, color: Colors.white),
              ),
            ),
          ],
        ),
      ),
    );
  }
}
