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+import 'dart:async';
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+
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+import 'package:clean/base/base_controller.dart';
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+import 'package:clean/module/calendar/selected_preview/calendar_selected_preview_view.dart';
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+import 'package:flutter/Material.dart';
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+import 'package:flutter_card_swiper/flutter_card_swiper.dart';
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+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
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+import 'package:get/get.dart';
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+import 'package:wechat_assets_picker/wechat_assets_picker.dart';
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+
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+import '../../../data/repositories/user_repository.dart';
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+import '../../../dialog/photo_delete_finish_dialog.dart';
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+import '../../../dialog/photo_deleting_dialog.dart';
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+import '../../../utils/toast_util.dart';
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+import '../../image_picker/image_picker_util.dart';
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+import '../../people_photo/photo_group.dart';
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+import '../../store/store_view.dart';
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+
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+class CalendarPreviewController extends BaseController
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+ with GetSingleTickerProviderStateMixin {
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+ final Rx<PhotoGroup> photoGroup =
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+ PhotoGroup(isSelected: false, images: []).obs;
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+
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+ late String? currentImageId;
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+
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+ final CardSwiperController cardSwiperController = CardSwiperController();
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+
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+ final RxBool isSwiperEnd = false.obs;
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+ RxInt groupIndex = 0.obs;
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+
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+
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+ late AnimationController animationController;
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+ RxBool animationIsComplete = false.obs;
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+
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+ @override
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+ void onInit() {
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+ super.onInit();
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+ _getArgs(); // 获取传递的参数
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+ animationController = AnimationController(
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+ vsync: this,
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+ duration: const Duration(seconds: 3),
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+ );
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+
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+ WidgetsBinding.instance.addPostFrameCallback((_) {
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+ if (currentImageId != null) {
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+ for (int i = 0; i < photoGroup.value.images.length; i++) {
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+ if (photoGroup.value.images[i].id == currentImageId) {
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+ debugPrint('photoGroups[i].id ${photoGroup.value.images[i].id},i $i');
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+ groupIndex.value = i;
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+ cardSwiperController.moveTo(i);
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+ break;
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+ }
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+ }
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+ }
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+ });
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+
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+ animationController.addStatusListener((status) {
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+ if (status == AnimationStatus.forward) {
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+ // 延迟一秒
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+ Future.delayed(Duration(seconds: 1), () {
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+ animationIsComplete.value = true;
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+ });
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+ }
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+ if (status == AnimationStatus.completed) {
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+ Future.delayed(Duration(seconds: 1), () {
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+ CalendarSelectedPreviewPage.start(photoGroup.value);
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+ });
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+ }
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+ });
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+ }
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+
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+ // 获取参数
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+ void _getArgs() {
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+ photoGroup.value = parameters?['photoGroup'];
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+ currentImageId = parameters?['currentImageId'];
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+ }
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+
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+ void clickUnselect() {
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+ debugPrint("clickUnselect");
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+ cardSwiperController.swipe(CardSwiperDirection.right);
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+ }
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+
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+ FutureOr<bool> onSwipe(
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+ int previousIndex,
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+ int? currentIndex,
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+ CardSwiperDirection direction,
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+ ) {
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+ debugPrint(
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+ 'The card $previousIndex was swiped to the ${direction.name}. Now the card $currentIndex is on top',
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+ );
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+
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+ if (currentIndex != null) {
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+ groupIndex.value = currentIndex;
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+ }
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+ // 预加载
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+
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+ // precacheImage(AssetEntityImageProvider(entity), context);
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+
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+ // 如果direction是left,
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+ if (direction == CardSwiperDirection.left) {
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+ // 先看看图片id是不是在selectedPhotosIds里面,如果在,不处理,如果不在,添加到selectedPhotosIds里面
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+ if (!photoGroup.value.selectedPhotosIds
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+ .contains(photoGroup.value.images[previousIndex].id)) {
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+ debugPrint(
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+ 'add photoGroups[groupIndex.value].id ${photoGroup.value.images[previousIndex].id}');
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+ photoGroup.value.selectedPhotosIds
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+ .add(photoGroup.value.images[previousIndex].id);
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+ }
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+ } else if (direction == CardSwiperDirection.right) {
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+ // 先看看图片id是不是在selectedPhotosIds里面,如果在,在selectedPhotosIds移除,不处理,如果不在,不处理
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+ if (photoGroup.value.selectedPhotosIds
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+ .contains(photoGroup.value.images[previousIndex].id)) {
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+ debugPrint(
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+ 'remove photoGroups[groupIndex.value].id ${photoGroup.value.images[previousIndex].id}');
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+ photoGroup.value.selectedPhotosIds
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+ .remove(photoGroup.value.images[previousIndex].id);
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+ }
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+ }
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+
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+ updateSelectedFilesSize();
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+ return true;
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+ }
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+
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+ bool onSwiperUndo(
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+ int? previousIndex,
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+ int currentIndex,
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+ CardSwiperDirection direction,
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+ ) {
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+ debugPrint(
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+ 'The card $currentIndex was swiped back to the ${direction.name}. Now the card $previousIndex is on top');
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+
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+ groupIndex.value = currentIndex;
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+ // 撤销之前左滑的操作
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+ if (direction == CardSwiperDirection.left) {
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+ debugPrint(
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+ 'photoGroups[groupIndex.value].id ${photoGroup.value.images[groupIndex.value].id}');
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+ if (photoGroup.value.selectedPhotosIds
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+ .contains(photoGroup.value.images[groupIndex.value].id)) {
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+ photoGroup.value.selectedPhotosIds
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+ .remove(photoGroup.value.images[groupIndex.value].id);
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+ }
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+ }
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+
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+ updateSelectedFilesSize();
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+
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+ return true;
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+ }
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+
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+ onSwiperEnd() {
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+ isSwiperEnd.value = true;
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+ debugPrint('onSwiperEnd');
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+
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+ // 延迟500ms
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+ Future.delayed(Duration(milliseconds: 200), () {
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+ animationController.forward(from: 0);
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+ });
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+ PhotoManager.clearFileCache();
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+ // PhotoSelectedPreviewPage.start(photosType, selectedPhotosIds);
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+ }
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+
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+ void recoverSelectPhoto() {
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+ debugPrint('PhotoPreviewController recoverSelectPhoto');
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+
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+ cardSwiperController.undo();
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+ }
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+
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+ void clickSelect() {
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+ cardSwiperController.swipe(CardSwiperDirection.left);
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+ }
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+
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+ void clickBack() {
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+ Get.back();
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+ }
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+
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+ clickDelete() async {
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+ debugPrint('CalendarPreviewController clickDelete');
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+ if (userRepository.isVip()) {
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+
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+ if (photoGroup.value.selectedPhotosIds.isNotEmpty) {
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+ photoDeletingDialog();
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+ // 获取要删除的资产
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+ final assetsToDelete = photoGroup.value.images
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+ .where(
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+ (asset) => photoGroup.value.selectedPhotosIds.contains(asset.id),
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+ )
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+ .toList();
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+
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+ // 调用方法会返回被删除的资源,如果全部失败会返回空列表。
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+ final List<String> result = await PhotoManager.editor.deleteWithIds(
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+ assetsToDelete.map((e) => e.id).toList(),
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+ );
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+
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+
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+ // 比较result和selectedPhotosIds,如果result和selectedPhotosIds相等,说明删除成功,走下面的逻辑
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+ // 如果不相等,说明有删除失败的,走else逻辑
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+ if (result.length == photoGroup.value.selectedPhotosIds.length) {
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+
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+ ImagePickerUtil.updatePhotoData(
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+ photoGroup.value.selectedPhotosIds);
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+ cleanSelections();
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+
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+ ToastUtil.show('Delete success');
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+ Future.delayed(Duration(seconds: 2), () {
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+ SmartDialog.dismiss(tag: 'photoDeletingDialog');
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+ photoDeleteFinishDialog();
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+ });
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+ } else {
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+ SmartDialog.dismiss(tag: 'photoDeletingDialog');
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+ // 删除失败
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+ ToastUtil.show("Delete failed");
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+ }
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+ }
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+
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+ } else {
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+ StorePage.start();
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+ }
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+ }
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+
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+ //删除成功清除选中的图片
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+ void cleanSelections() async {
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+ photoGroup.value.images
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+ .removeWhere((element) => photoGroup.value.selectedPhotosIds.contains(element.id));
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+ photoGroup.value.selectedPhotosIds.clear();
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+ photoGroup.refresh();
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+ if (photoGroup.value.images.isEmpty) {
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+ return;
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+ }
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+
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+ isSwiperEnd.value = false;
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+
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+ if (photoGroup.value.images.isNotEmpty) {
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+ WidgetsBinding.instance.addPostFrameCallback((_) {
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+ groupIndex.value = 0;
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+ cardSwiperController.moveTo(0);
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+ });
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+ }
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+ updateSelectedFilesSize();
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+
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+ }
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+
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+ // 将selectedFilesSize转成String类型,然后单位转换,如果超过1MB,则转成MB,超过1GB,则转成GB,否则KB
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+ String get selectedFilesSizeString {
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+
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+ final double sizeInKB = photoGroup.value.selectedTotalSize.value;
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+
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+ if (sizeInKB >= 1024 * 1024) { // 先检查最大单位(GB)
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+ return "${(sizeInKB / (1024 * 1024)).toStringAsFixed(2)}GB";
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+ } else if (sizeInKB >= 1024) { // 然后检查MB
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+ return "${(sizeInKB / 1024).toStringAsFixed(2)}MB";
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+ } else { // 最后是KB
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+ return "${sizeInKB.toStringAsFixed(2)}KB";
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+ }
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+ }
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+
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+ Future<void> updateSelectedFilesSize() async {
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+ // 如果没有选中的文件,直接返回
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+ if (photoGroup.value.selectedCount == 0) {
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+ photoGroup.value.selectedTotalSize.value = 0;
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+ return;
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+ }
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+
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+ double totalSize = 0;
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+ final selectedImages = photoGroup.value.images;
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+
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+ // 获取选中图片的大小(异步并行执行)
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+ final futures = photoGroup.value.selectedPhotosIds.map((assetId) async {
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+ if (ImagePickerUtil.fileSizeCache.containsKey(assetId)) {
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+ totalSize += ImagePickerUtil.fileSizeCache[assetId]!;
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+ } else {
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+ final image = selectedImages.firstWhere((image) => image.id == assetId);
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+ final file = await image.file;
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+ if (file != null) {
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+ final size = (await file.length()) / 1024; // 转换为KB
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+ totalSize += size;
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+ ImagePickerUtil.fileSizeCache[assetId] = size;
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+ }
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+ }
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+ }).toList();
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+
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+ // 等待所有异步操作完成
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+ await Future.wait(futures);
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+
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+ // 更新选中文件的总大小
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+ photoGroup.value.selectedTotalSize.value = totalSize;
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+
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+ // 打印调试信息
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+ print("selectedFilesSize: ${photoGroup.value.selectedTotalSize.value}");
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+
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+
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+ }
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+
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+ void restoreSelections() {
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+
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+
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+ if(photoGroup.value.images.isEmpty){
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+ clickBack();
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+ return;
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+ }
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+
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+ isSwiperEnd.value = false;
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+
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+ if (photoGroup.value.images.isNotEmpty) {
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+ WidgetsBinding.instance.addPostFrameCallback((_) {
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+ groupIndex.value = 0;
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+ cardSwiperController.moveTo(0);
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+ });
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+ }
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+ updateSelectedFilesSize();
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+
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+ }
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+ @override
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+ void onClose() {
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+ debugPrint('CalendarPreviewController onClose');
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+
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+ animationController.dispose();
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+ super.onClose();
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+
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+ isSwiperEnd.value = false;
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+
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+ // 清理操作,释放资源
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+ cardSwiperController.dispose();
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+
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+ // 清理缓存
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+ PhotoManager.clearFileCache();
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+ }
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+
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+
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+}
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