public async ValueTask <bool> DeleteTag(long tagId) { using var context = Context; var mangaTagMappingService = new MangaTagMappingService(context); var tagService = new TagService(context); context.BeginTran(); try { context.BeginTran(); var tag = await tagService.GetSingleAsync(it => it.ObjectId == tagId); if (tag.Key == tag.ObjectId) { var keyTagList = await tagService.GetListAsync(it => it.Key == tagId && it.ObjectId != tagId); if (keyTagList.Count != 0) { var newKey = keyTagList.First().ObjectId; await tagService.UpdateKey(tagId, newKey); await mangaTagMappingService.Update(tagId, newKey); } else { await mangaTagMappingService.DeleteAsync(it => it.TagId == tagId); } } await tagService.DeleteAsync(it => it.ObjectId == tagId); context.CommitTran(); FtsIndexService.DeleteTagFtxIndex(tagId); return(true); } catch (Exception e) { context.RollbackTran(); throw; } }
public async ValueTask <bool> Update(Tag tag) { using var context = Context; try { context.BeginTran(); var tagService = new TagService(context); var toBeMapping = new HashSet <long>(); var mangaTagMappingService = new MangaTagMappingService(context); var oldTag = await tagService.GetTagWithAliases(it => it.ObjectId == tag.ObjectId); // Update metadata if (oldTag == null || !await tagService.Update(tag)) { context.RollbackTran(); return(false); } // Check type of key tag == type of tag if (oldTag.Key != tag.Key) { var keyTag = await tagService.GetSingleAsync(it => it.ObjectId == tag.Key); if (tag.TypeId != keyTag?.TypeId) { context.RollbackTran(); return(false); } toBeMapping.Add(oldTag.Key); } // Recover all removed aliases foreach (var alias in oldTag.Aliases.Where(oldTagAlias => tag.Aliases.All(it => it.ObjectId != oldTagAlias.ObjectId))) { var oldTagAlias = await tagService.GetSingleAsync(it => it.ObjectId == alias.ObjectId); oldTagAlias.Key = oldTagAlias.ObjectId; if (!await tagService.Update(oldTagAlias)) { context.RollbackTran(); return(false); } } for (int i = 0; i < tag.Aliases.Count; i++) { var tagAlias = tag.Aliases[i]; var oldAlias = await tagService.GetSingleAsync(it => it.ObjectId == tagAlias.ObjectId); if (oldAlias.TypeId != tag.TypeId) { context.RollbackTran(); return(false); } oldAlias.Aliases = await tagService.GetListAsync(it => it.Key == tagAlias.ObjectId && it.Key != it.ObjectId); if (oldAlias.Aliases != null) { tag.Aliases.AddRange(oldAlias.Aliases); } if (oldAlias.Key == tag.Key) { continue; } toBeMapping.Add(oldAlias.Key); oldAlias.Key = tag.Key; if (await tagService.Update(oldAlias)) { continue; } context.RollbackTran(); return(false); } foreach (var oldKey in toBeMapping) { await mangaTagMappingService.Update(oldKey, tag.Key); } FtsIndexService.UpdateFtsIndex(tag); context.CommitTran(); return(true); } catch (Exception e) { context.RollbackTran(); throw; } }