import 'dart:io';

import 'package:get/get.dart';
import 'package:photo_manager/photo_manager.dart';

class ImagePickerUtil {
  ImagePickerUtil._();

  static const RequestType permissionType = RequestType.image;

  // 全局存储不同类型的照片
  // 截图图片
  static final RxList<AssetEntity> screenshotPhotos = <AssetEntity>[].obs;
  // 相似图片
  static final RxList<List<AssetEntity>> similarPhotos = <List<AssetEntity>>[].obs;
  // 地点图片
  static final RxMap<String, List<AssetEntity>> locationPhotos = <String, List<AssetEntity>>{}.obs;
  // 人物图片
  static final RxList<AssetEntity> peoplePhotos = <AssetEntity>[].obs;

  // 清除所有照片数据
  static void clearAllPhotos() {
    screenshotPhotos.clear();
    similarPhotos.clear();
    locationPhotos.clear();
    peoplePhotos.clear();
  }

  // 更新照片数据
  static Future<void> updatePhotos(List<Map<String, dynamic>> photoGroups) async {
    clearAllPhotos();

    for (var group in photoGroups) {
      String type = group['type'] as String;
      List<dynamic> photos = group['group'] as List<dynamic>;

      switch (type) {
        case 'screenshots':
          screenshotPhotos.value = await _convertToAssetEntities(photos);
          break;
        case 'similar':
          similarPhotos.add(await _convertToAssetEntities(photos));
          break;
        case 'location':
          String location = group['name'] as String;
          locationPhotos[location] = await _convertToAssetEntities(photos);
          break;
        case 'people':
          peoplePhotos.value = await _convertToAssetEntities(photos);
          break;
      }
    }
  }
  // 将原始照片数据转换为 AssetEntity 列表
  static Future<List<AssetEntity>> _convertToAssetEntities(List<dynamic> photos) async {
    List<AssetEntity> entities = [];
    for (var photo in photos) {
      final entity = await AssetEntity.fromId(photo['id'] as String);
      if (entity != null) {
        entities.add(entity);
      }
    }
    return entities;
  }

  //申请权限
  static Future<bool> requestPermissionExtend() async {
    final PermissionState ps = await PhotoManager.requestPermissionExtend(
        requestOption: const PermissionRequestOption(
            androidPermission: AndroidPermission(
              type: permissionType,
              mediaLocation: false,
            )));
    return ps.hasAccess;
  }

  //判断是否有权限
  static Future<bool> hasPermission() async {
    final PermissionState ps = await PhotoManager.getPermissionState(
        requestOption: const PermissionRequestOption(
            androidPermission: AndroidPermission(
              type: permissionType,
              mediaLocation: false,
            )));
    return ps.hasAccess;
  }

}