ftc_patient_app/lib/utilities/image_picker_popup.dart

import 'dart:io';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import 'package:image_picker/image_picker.dart';
import 'package:permission_handler/permission_handler.dart';

class ImagePickerPopup {
  ImagePickerPopup._();

  static final _picker = ImagePicker();

  static void showImagePickerDialog(
    // BuildContext context,
    Function(File? file) onFetchImage, {
    double? maxWidth,
    double? maxHeight,
  }) {
    _checkCameraPermission().then((permissionGranted) {
      debugPrint("permission status: $permissionGranted");
      if (permissionGranted) {
        _showImageUploadBottomSheet(
          onFetchImage,
          maxWidth: maxWidth,
          maxHeight: maxHeight,
        );
      } else {
        ScaffoldMessenger.of(Get.context!).showSnackBar(
          SnackBar(
            content: const Text(
              'Please allow permission to access Camera and photos.',
              // style: textStyle16w400.copyWith(color: Colors.white),
            ),
            duration: const Duration(seconds: 5),
            backgroundColor: Colors.black,
            action: SnackBarAction(
                label: 'Setting', onPressed: () => openAppSettings()),
          ),
        );
      }
    });
  }

  static Future<bool> _checkCameraPermission() async {
    // 1. Checking Initial Permission Status:
    const cameraPermission = Permission.camera;

    final cameraPermissionStatus = await cameraPermission.status;

    if (cameraPermissionStatus.isGranted) {
      debugPrint("status: true");
      return true;
    } else {
      Map permissionsResult = await [cameraPermission].request();
      if (permissionsResult.values.isNotEmpty &&
          permissionsResult[cameraPermission] == PermissionStatus.granted) {
        debugPrint("status2: true");
        return true;
      } else {
        debugPrint("status3: false");
        return await cameraPermission.shouldShowRequestRationale;
      }
    }
  }

  static void _showImageUploadBottomSheet(
    // BuildContext context,
    Function(File) onFetchImage, {
    double? maxWidth,
    double? maxHeight,
  }) {
    Get.bottomSheet(
        Container(
          padding: const EdgeInsets.all(20),
          child: ListView(
            shrinkWrap: true,
            physics: const NeverScrollableScrollPhysics(),
            children: <Widget>[
              const Text(
                "Upload Image",
                // style: textStyle16w700.copyWith(color: Colors.black),
                textAlign: TextAlign.center,
              ),
              const SizedBox(height: 5),
              const Text(
                "Click a Photo or upload your image from saved photos.",
                // style: textStyle12w500.copyWith(color: Colors.black),
                textAlign: TextAlign.center,
              ),
              const SizedBox(height: 20),
              Row(
                children: <Widget>[
                  const SizedBox(width: 30),
                  Expanded(
                    child: InkWell(
                      onTap: () {
                        Get.back();
                        // Navigator.of(context).pop();
                        getImageFromSource(
                          fromCamera: true,
                          onFetchImage: onFetchImage,
                          maxWidth: maxWidth,
                          maxHeight: maxHeight,
                        );
                      },
                      borderRadius:
                          const BorderRadius.all(Radius.circular(20.0)),
                      child: Container(
                        padding: const EdgeInsets.all(10.0),
                        child: Column(
                          children: <Widget>[
                            Icon(
                              CupertinoIcons.camera,
                              size: 50.r,
                              color: Get.theme.primaryColor,
                            ),
                            const SizedBox(height: 8),
                            const Text(
                              "Camera",
                              // style: textStyle16w700.copyWith(
                              //     color: Colors.black)
                            ),
                          ],
                        ),
                      ),
                    ),
                  ),
                  SizedBox(
                    width: 40.r,
                    height: 64.r,
                    child: const Center(
                      child: VerticalDivider(color: Colors.grey, width: 2),
                    ),
                  ),
                  Expanded(
                    child: InkWell(
                      onTap: () {
                        // Navigator.of(context).pop();
                        Get.back();
                        getImageFromSource(
                            fromCamera: false, onFetchImage: onFetchImage);
                      },
                      borderRadius:
                          const BorderRadius.all(Radius.circular(20.0)),
                      child: Container(
                        padding: const EdgeInsets.all(10.0),
                        child: Column(
                          children: <Widget>[
                            // SvgPicture.asset(
                            //   Assets.svgPlaceholderImg2,
                            //   width: 50,
                            //   height: 50,
                            // ),
                            Icon(
                              CupertinoIcons.photo,
                              size: 50.r,
                              color: Get.theme.primaryColor,
                            ),
                            const SizedBox(height: 8),
                            const Text(
                              "Gallery",
                              // style: textStyle16w700.copyWith(
                              //     color: Colors.black)
                            ),
                          ],
                        ),
                      ),
                    ),
                  ),
                  const SizedBox(
                    width: 30,
                  ),
                ],
              )
            ],
          ),
        ),
        backgroundColor: Colors.white);
  }

  static void getImageFromSource({
    required bool fromCamera,
    required Function(File) onFetchImage,
    double? maxWidth,
    double? maxHeight,
  }) async {
    final permissionGranted = await _checkCameraPermission();
    debugPrint("permission status: $permissionGranted");

    if (permissionGranted) {
      final pickedFile = await _picker.pickImage(
        source: fromCamera ? ImageSource.camera : ImageSource.gallery,
        imageQuality: 80,
        maxWidth: maxWidth,
        maxHeight: maxHeight,
      );
      if (pickedFile != null) {
        final picture = File(pickedFile.path);
        onFetchImage(picture);
      }
    } else {
      ScaffoldMessenger.of(Get.context!).showSnackBar(
        SnackBar(
          content: const Text(
            'Please allow permission to access Camera and photos.',
          ),
          duration: const Duration(seconds: 5),
          backgroundColor: Colors.black,
          action: SnackBarAction(
              label: 'Setting', onPressed: () => openAppSettings()),
        ),
      );
    }
  }
}