import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:rogapp/routes/app_pages.dart';

class PermissionHandlerScreen extends StatefulWidget {
  PermissionHandlerScreen({Key? key}) : super(key: key);

  @override
  State<PermissionHandlerScreen> createState() => _PermissionHandlerScreenState();
}

class _PermissionHandlerScreenState extends State<PermissionHandlerScreen> {

  Future<void> _showMyDialog() async {
    return showDialog<void>(
      context: context,
      barrierDismissible: false, // user must tap button!
      builder: (BuildContext context) {
        return AlertDialog(
          title: const Text('ロケーション許可'),
          content: SingleChildScrollView(
            child: ListBody(
              children: const <Widget>[
                Text( 'このアプリでは、位置情報の収集を行います。'),
                Text( 'このアプリでは、開始時点で位置情報を収集します。'),
              ],
            ),
          ),
          actions: <Widget>[
            TextButton(
              child: const Text('わかった'),
              onPressed: () {
                //Navigator.of(context).pop();
                Get.toNamed(AppPages.TRAVEL);
              },
            ),
          ],
        );
      },
    );
  }

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    permissionServiceCall();
  }

    permissionServiceCall() async {
    await permissionServices().then(
      (value) {
        if (value != null) {
          if (value[Permission.location]!.isGranted ) {
            /* ========= New Screen Added  ============= */

            Get.toNamed(AppPages.TRAVEL);

            // Navigator.pushReplacement(
            //   context,
            //   MaterialPageRoute(builder: (context) => SplashScreen()),
            // );
          }
          else{
            _showMyDialog();
          }
        }
      },
    );
  }


    /*Permission services*/
  Future<Map<Permission, PermissionStatus>> permissionServices() async {
    // You can request multiple permissions at once.
    Map<Permission, PermissionStatus> statuses = await [
      Permission.location,
     
      //add more permission to request here.
    ].request();

    if (statuses[Permission.location]!.isPermanentlyDenied) {
      await openAppSettings().then(
        (value) async {
          if (value) {
            if (await Permission.location.status.isPermanentlyDenied == true &&
                await Permission.location.status.isGranted == false) {
              // openAppSettings();
              permissionServiceCall(); /* opens app settings until permission is granted */
            }
          }
        },
      );
    } else {
      if (statuses[Permission.location]!.isDenied) {
        permissionServiceCall();
      }
    }
    
    /*{Permission.camera: PermissionStatus.granted, Permission.storage: PermissionStatus.granted}*/
    return statuses;
  }



  @override
  Widget build(BuildContext context) {
    return Container(
      color: Colors.white,
      child: Center(
        child: Text(""),
      ),
    );
  }
}