import 'dart:io';

import 'package:flutter/widgets.dart';
import 'package:image_picker/image_picker.dart';
import 'package:path/path.dart';
import 'package:path_provider/path_provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

class CompassImageProvider extends ChangeNotifier {
  CompassImageProvider() {
    loadCompassImage();
  }

  final Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
  ImageProvider _rotateImage;

  ImageProvider get rotateImage => _rotateImage;

//  加载罗盘图片
  void loadCompassImage() async {
    final prefs = await _prefs;
    final appDataDirectory = await getApplicationDocumentsDirectory();
    String pathString = prefs.getString('rotate_image');
    if (pathString != null) {
      File file = File(join(appDataDirectory.path, pathString));
      var isFileExist = await file.exists();
      if (isFileExist) {
        _rotateImage = FileImage(file);
      } else {
        _rotateImage = null;
      }
    } else {
      _rotateImage = null;
    }
    notifyListeners();
  }

  void setSelectedRotateImage(XFile res) async {
    final appDataDirectory = await getApplicationDocumentsDirectory();
    print(res.path);
    String pathString = res.name;
    if (pathString == null) {
      return;
    }
    // imageCache.clear();
    // res.saveTo(join(appDataDirectory.path, res.name));
    res.saveTo(
        join(appDataDirectory.path, 'rotate_image${extension(res.name)}'));
    final prefs = await _prefs;
    // final appDataDirectory = await getApplicationDocumentsDirectory();

    // File file = File(join(appDataDirectory.path, pathString));
    // File file =
    //     File(join(appDataDirectory.path, 'rotate_image${extension(res.name)}'));
    File file = File(res.path);
    print(file);
    var isFileExist = await file.exists();
    print(isFileExist);
    if (isFileExist) {
      _rotateImage = FileImage(file);
    } else {
      _rotateImage = null;
    }
    prefs.setString('rotate_image', 'rotate_image${extension(res.name)}');
    // prefs.setString('rotate_image', pathString);
    // imageCache.clearLiveImages();
    notifyListeners();
  }
}