import 'dart:io';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:image_gallery_saver/image_gallery_saver.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:wallpaper/common/components/easy_loading.dart';
import 'package:wallpaper/common/components/wallpaper_picker.dart';
import 'package:wallpaper/common/models/wallpaper_model.dart';
import 'package:wallpaper/common/storage/favorite_data.dart';
import 'package:wallpaper/common/utils/device_info_util.dart';
import 'package:wallpaper/common/utils/download_util.dart';
import 'package:wallpaper/common/utils/obj_util.dart';
import 'package:wallpaper/common/utils/permission_util.dart';
import 'package:wallpaper/modules/favorite/favorite_controller.dart';

class WallpaperDetController extends GetxController {
  late int position;
  late final List<WallpaperData> wallpaperList;
  late final PageController pageController;
  final options = [OptionItem('Download', Icons.download)];
  var filePath = '';

  @override
  void onInit() {
    super.onInit();
    bool isFavorite = Get.arguments['isFavorite'] ?? false;
    position = Get.arguments['position'] ?? 0;
    wallpaperList = Get.arguments['wallpaperList'] ?? <WallpaperData>[];
    pageController = PageController(initialPage: position);
    if (!isFavorite) {
      options.add(OptionItem('Favorite', Icons.favorite));
    }
    if (Platform.isAndroid) {
      options.add(OptionItem('Set Wallpaper', Icons.wallpaper));
    }
  }

  /// 图片切换
  void onPageChanged(int index) {
    position = index;
    filePath = '';
  }

  /// 选项事件
  void optionOnTap(int index) {
    if (index == 0) {
      // 下载
      if (Get.isSnackbarOpen) {
        return;
      }
      DownloadUtil.downloadWallpaper('${wallpaperList[position].original}', (savePath) async {
        filePath = savePath;
        bool canSave = true;
        if (Platform.isAndroid) {
          // 在Android 10及以上版本，由于引入了分区存储（Scoped Storage）机制，如果应用只是需要访问媒体文件，而不是整个外部存储
          // ImageGallerySaver使用MediaStore API来添加图片到相册，无需请求存储权限
          // Android 10以下版本，需要申请存储权限
          int sdkVersion = await DeviceInfoUtil.getSDKVersion();
          if (sdkVersion < 29) {
            bool status = await PermissionUtil.checkPermission([Permission.storage]);
            canSave = status;
          }
        }
        if (canSave) {
          final result = await ImageGallerySaver.saveFile(savePath);
          if (result['isSuccess']) {
            toast('Saved to album');
          } else {
            toast('Unable to save to album');
          }
        }
      });
    } else if (index == 1) {
      // 收藏
      WallpaperData wallpaperData = wallpaperList[position];
      if (FavoriteData().getWallpaperData().firstWhereOrNull((element) => element.original == wallpaperData.original) != null) {
        toast('Wallpaper has been collected');
        return;
      }
      FavoriteData().setWallpaperData(wallpaperData);
      toast('Wallpaper has been collected');
      // 刷新收藏列表
      if (Get.isRegistered<FavoriteController>()) {
        FavoriteController.to.refreshList();
      }
    } else {
      // 设置壁纸
      if (ObjUtil.isNotEmptyStr(filePath)) {
        WallpaperPicker.picker(filePath);
      } else {
        DownloadUtil.downloadWallpaper('${wallpaperList[position].original}', (savePath) async {
          filePath = savePath;
          WallpaperPicker.picker(savePath);
        });
      }
    }
  }
}

class OptionItem {
  late final String option;
  late final IconData icons;

  OptionItem(this.option, this.icons);
}