main.dart

import 'package:flutter/material.dart';
import 'package:flutter_time_slot_picker/datetime_extensions.dart';

import 'package:flutter_time_slot_picker/flutter_time_slot_picker.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Time Slot Picker'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});
  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  bool timeSlotAvailablity = false;
  DateTime selectedStartTime = DateTime.now().roundUp(
    delta: const Duration(minutes: 30),
  );
  DateTime selectedEndTime = DateTime.now()
      .roundUp(
        delta: const Duration(minutes: 30),
      )
      .add(const Duration(minutes: 30));
  List<String> bookedSlots = [
    '11:38-12:11',
    '12:30-13:30',
    '14:0-14:30',
    '0:0-12:30',
    // '10:00-13:00',
    // '14:00-14:30',
    // '15:30-18:00',
    // '1:00-3:00'

    // "17:0-17:30",
    // "17:30-18:0",
    // "18:0-18:30",
    // "0:0-17:30"
  ];

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    timeSlotAvailablity = checkSlotAvailablity(
        selectedStartTime, selectedEndTime, calculateSlots(bookedSlots));
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            FlutterTimeSlotPicker(
              height: 60,
              // ignore: prefer_const_literals_to_create_immutables
              bookedSlots: bookedSlots,
              onSlotChange: (availablity, startTime, endTime) {
                setState(() {
                  timeSlotAvailablity = availablity;
                  selectedStartTime = startTime;
                  selectedEndTime = endTime;
                });
              },
              startTime: selectedStartTime,
              endTime: selectedEndTime,
              initialTime: DateTime.now().roundUp(
                delta: const Duration(minutes: 30),
              ),
            ),
            const SizedBox(
              height: 10,
            ),
            const Text(
              'Selected Time Slot:',
              style: TextStyle(fontWeight: FontWeight.bold),
            ),
            Text(
              '$selectedStartTime - $selectedEndTime',
              // style: Theme.of(context).textTheme.headline4,
            ),
            const SizedBox(
              height: 10,
            ),
            const Text(
              'Slot Availability',
              style: TextStyle(fontWeight: FontWeight.bold),
            ),
            Text(
              '$timeSlotAvailablity',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
    );
  }
}