import 'dart:io';
import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:video_player/video_player.dart';

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

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  int progress = 0;
  late VideoPlayerController _controller;
  String videoUrl =
      "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerMeltdowns.mp4";

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.networkUrl(Uri.parse(videoUrl))
      ..initialize().then((_) {
        setState(() {});
      });
  }

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

  Future<void> downloadVideo(String url, String fileName) async {
    try {
      // Request storage permission
      var status = await Permission.storage.request();
      if (status.isGranted) {
        // Get the directory to save the file
        Directory? appDocDir = await getExternalStorageDirectory();
        String savePath = "${appDocDir?.path}/$fileName";

        // Create an instance of Dio
        Dio dio = Dio();

        // Start the download
        await dio.download(
          url,
          savePath,
          onReceiveProgress: (received, total) {
            if (total != -1) {
              setState(() {
                progress = ((received / total) * 100).toInt();
              });
            }
          },
        );

        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(
            backgroundColor: Colors.green,
            content: Text(
              "Video downloaded successfully!",
              style: TextStyle(
                color: Colors.white,
                fontSize: 16,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
        );
      } else {
        print("Permission denied!");
      }
    } catch (e) {
      print("Error downloading video: $e");
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Video Downloader'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              _controller.value.isInitialized
                  ? AspectRatio(
                      aspectRatio: _controller.value.aspectRatio,
                      child: VideoPlayer(_controller),
                    )
                  : const Center(
                      child: CircularProgressIndicator.adaptive(),
                    ),
              const SizedBox(height: 20),
              ElevatedButton(
                onPressed: () async {
                  await downloadVideo(videoUrl, videoUrl.split("/").last);
                },
                child: const Text("Download Video"),
              ),
              const SizedBox(height: 20),
              if (progress > 0)
                Text(
                  "Download Progress: $progress%",
                  style: const TextStyle(
                    fontSize: 20,
                    fontWeight: FontWeight.bold,
                    color: Colors.green,
                  ),
                ),
            ],
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            setState(() {
              _controller.value.isPlaying
                  ? _controller.pause()
                  : _controller.play();
            });
          },
          child: Icon(
            _controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
            size: 30,
            color: Colors.white,
          ),
        ),
      ),
    );
  }
}