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feat(album): add cover picture functionality to albums and enhance album management API
This commit is contained in:
shiyu
308
Services/Management/AlbumManagementService.cs
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308
Services/Management/AlbumManagementService.cs
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@@ -0,0 +1,308 @@
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using Foxel.Models;
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using Foxel.Models.DataBase;
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using Foxel.Models.Request.Album;
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using Foxel.Models.Response.Album;
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using Foxel.Models.Response.Picture;
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using Microsoft.EntityFrameworkCore;
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using Foxel.Services.Mapping;
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namespace Foxel.Services.Management
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{
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public class AlbumManagementService(
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IDbContextFactory<MyDbContext> contextFactory,
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IMappingService mappingService,
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ILogger<AlbumManagementService> logger)
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: IAlbumManagementService
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{
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public async Task<PaginatedResult<AlbumResponse>> GetAlbumsAsync(int page = 1, int pageSize = 10,
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string? searchQuery = null, int? userId = null)
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{
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if (page < 1) page = 1;
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if (pageSize < 1) pageSize = 10;
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var query = dbContext.Albums
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.Include(a => a.User)
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.Include(a => a.CoverPicture)
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.Include(a => a.Pictures) // To get PictureCount
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.AsQueryable();
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if (!string.IsNullOrWhiteSpace(searchQuery))
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{
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query = query.Where(a =>
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a.Name.Contains(searchQuery) || (a.Description != null && a.Description.Contains(searchQuery)));
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}
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if (userId.HasValue)
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{
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query = query.Where(a => a.UserId == userId.Value);
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}
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query = query.OrderByDescending(a => a.CreatedAt);
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var totalCount = await query.CountAsync();
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var albums = await query
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.Skip((page - 1) * pageSize)
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.Take(pageSize)
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.ToListAsync();
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var albumResponses = albums.Select(mappingService.MapAlbumToResponse).ToList();
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return new PaginatedResult<AlbumResponse>
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{
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Data = albumResponses,
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Page = page,
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PageSize = pageSize,
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TotalCount = totalCount
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};
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}
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public async Task<AlbumResponse> GetAlbumByIdAsync(int id)
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{
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var album = await dbContext.Albums
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.Include(a => a.User)
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.Include(a => a.CoverPicture)
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.Include(a => a.Pictures) // Ensure Pictures is included for PictureCount
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.FirstOrDefaultAsync(a => a.Id == id);
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if (album == null)
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throw new KeyNotFoundException($"找不到ID为 {id} 的相册");
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return mappingService.MapAlbumToResponse(album);
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}
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public async Task<AlbumResponse> CreateAlbumAsync(AlbumCreateRequest request, int creatorUserId)
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{
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var album = new Album
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{
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Name = request.Name,
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Description = request.Description ?? string.Empty,
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UserId = creatorUserId,
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CoverPictureId = request.CoverPictureId,
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CreatedAt = DateTime.UtcNow,
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UpdatedAt = DateTime.UtcNow
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};
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await dbContext.Albums.AddAsync(album);
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await dbContext.SaveChangesAsync();
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// Reload to include navigation properties if needed for response, or map manually
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var createdAlbum = await dbContext.Albums
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.Include(a => a.User)
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.Include(a => a.CoverPicture)
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.Include(a => a.Pictures) // Ensure Pictures is included for PictureCount
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.FirstAsync(a => a.Id == album.Id);
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return mappingService.MapAlbumToResponse(createdAlbum);
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}
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public async Task<AlbumResponse> UpdateAlbumAsync(int id, AlbumUpdateRequest request)
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{
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var album = await dbContext.Albums
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.Include(a => a.User)
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.Include(a => a.CoverPicture) // Keep this for cover picture
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.Include(a => a.Pictures) // Keep this for PictureCount
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.FirstOrDefaultAsync(a => a.Id == id);
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if (album == null)
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throw new KeyNotFoundException($"找不到ID为 {id} 的相册");
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if (request.Name != null)
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album.Name = request.Name;
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if (request.Description != null)
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album.Description = request.Description;
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if (request.CoverPictureId.HasValue)
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album.CoverPictureId = request.CoverPictureId.Value == 0 ? null : request.CoverPictureId;
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album.UpdatedAt = DateTime.UtcNow;
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await dbContext.SaveChangesAsync();
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// Reload CoverPicture if it was changed by ID
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if (request.CoverPictureId.HasValue)
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{
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album = await dbContext.Albums
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.Include(a => a.User)
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.Include(a => a.CoverPicture)
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.Include(a => a.Pictures) // Ensure Pictures is included for PictureCount
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.FirstAsync(a => a.Id == id);
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}
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// If CoverPictureId was not updated, but other fields were, we still need the full album for mapping
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else if (album.CoverPicture == null && album.CoverPictureId != null) // Case where CoverPicture was null but ID existed
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{
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album = await dbContext.Albums
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.Include(a => a.User)
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.Include(a => a.CoverPicture)
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.Include(a => a.Pictures)
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.FirstAsync(a => a.Id == id);
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}
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return mappingService.MapAlbumToResponse(album);
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}
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public async Task<bool> DeleteAlbumAsync(int id)
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{
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var album = await dbContext.Albums.FirstOrDefaultAsync(a => a.Id == id);
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if (album == null)
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throw new KeyNotFoundException($"找不到ID为 {id} 的相册");
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// Find all pictures belonging to this album
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var picturesInAlbum = await dbContext.Pictures
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.Where(p => p.AlbumId == id)
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.ToListAsync();
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// Disassociate pictures from the album
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foreach (var picInAlbum in picturesInAlbum)
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{
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picInAlbum.AlbumId = null;
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}
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dbContext.Albums.Remove(album);
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await dbContext.SaveChangesAsync(); // This will save both picture updates and album deletion.
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return true;
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}
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public async Task<BatchDeleteResult> BatchDeleteAlbumsAsync(List<int> ids)
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{
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var result = new BatchDeleteResult();
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foreach (var id in ids)
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{
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try
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{
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var success = await DeleteAlbumAsync(id);
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if (success)
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result.SuccessCount++;
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else
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{
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result.FailedCount++;
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result.FailedIds.Add(id);
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}
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}
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catch (Exception ex)
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{
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logger.LogError(ex, $"批量删除相册失败，ID: {id}");
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result.FailedCount++;
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result.FailedIds.Add(id);
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}
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}
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return result;
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}
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public async Task<PaginatedResult<AlbumResponse>> GetAlbumsByUserIdAsync(int userId, int page = 1,
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int pageSize = 10)
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{
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return await GetAlbumsAsync(page, pageSize, null, userId);
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}
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public async Task<bool> AddPictureToAlbumAsync(int albumId, int pictureId)
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{
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var album = await dbContext.Albums.FindAsync(albumId);
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var picture = await dbContext.Pictures.FindAsync(pictureId);
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if (album == null)
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throw new KeyNotFoundException($"找不到ID为 {albumId} 的相册");
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if (picture == null)
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throw new KeyNotFoundException($"找不到ID为 {pictureId} 的图片");
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if (picture.AlbumId == albumId)
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{
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// Picture is already in this album or no change needed
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return true;
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}
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picture.AlbumId = albumId;
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// picture.Album = album; // EF Core will link this based on AlbumId if Album navigation property exists on Picture
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await dbContext.SaveChangesAsync();
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return true;
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}
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public async Task<bool> RemovePictureFromAlbumAsync(int albumId, int pictureId)
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{
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var picture = await dbContext.Pictures
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.FirstOrDefaultAsync(p => p.Id == pictureId && p.AlbumId == albumId);
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if (picture == null)
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throw new KeyNotFoundException($"在相册 {albumId} 中找不到图片 {pictureId}");
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picture.AlbumId = null;
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// picture.Album = null; // EF Core will update this
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await dbContext.SaveChangesAsync();
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return true;
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}
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public async Task<PaginatedResult<PictureResponse>> GetPicturesInAlbumAsync(int albumId, int page = 1,
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int pageSize = 10)
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{
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if (page < 1) page = 1;
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if (pageSize < 1) pageSize = 10;
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var albumExists = await dbContext.Albums.AnyAsync(a => a.Id == albumId);
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if (!albumExists)
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{
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throw new KeyNotFoundException($"找不到ID为 {albumId} 的相册");
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}
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var query = dbContext.Pictures
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.Where(p => p.AlbumId == albumId)
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.Include(p => p.User)
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.Include(p => p.Tags)
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.Include(p => p.Favorites);
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query =
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(Microsoft.EntityFrameworkCore.Query.IIncludableQueryable<Picture, ICollection<Favorite>?>)query
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.OrderByDescending(p => p.CreatedAt);
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var totalCount = await query.CountAsync();
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var pictures = await query
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.Skip((page - 1) * pageSize)
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.Take(pageSize)
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.ToListAsync();
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var pictureResponses = pictures.Select(mappingService.MapPictureToResponse).ToList();
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return new PaginatedResult<PictureResponse>
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{
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Data = pictureResponses,
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Page = page,
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PageSize = pageSize,
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TotalCount = totalCount
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};
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}
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public async Task<bool> SetAlbumCoverAsync(int albumId, int pictureId)
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{
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await using var dbContext = await contextFactory.CreateDbContextAsync();
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var album = await dbContext.Albums.FindAsync(albumId);
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if (album == null)
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throw new KeyNotFoundException($"找不到ID为 {albumId} 的相册");
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var picture = await dbContext.Pictures.FindAsync(pictureId);
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if (picture == null)
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throw new KeyNotFoundException($"找不到ID为 {pictureId} 的图片");
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// Ensure the picture is part of the album by checking its AlbumId
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if (picture.AlbumId != albumId)
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throw new InvalidOperationException($"图片 {pictureId} 不属于相册 {albumId}");
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album.CoverPictureId = pictureId;
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album.UpdatedAt = DateTime.UtcNow;
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await dbContext.SaveChangesAsync();
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return true;
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}
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}
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}
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22
Services/Management/IAlbumManagementService.cs
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22
Services/Management/IAlbumManagementService.cs
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@@ -0,0 +1,22 @@
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using Foxel.Models;
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using Foxel.Models.Request.Album;
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using Foxel.Models.Response.Album;
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using Foxel.Models.Response.Picture;
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namespace Foxel.Services.Management
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{
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public interface IAlbumManagementService
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{
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Task<PaginatedResult<AlbumResponse>> GetAlbumsAsync(int page = 1, int pageSize = 10, string? searchQuery = null, int? userId = null);
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Task<AlbumResponse> GetAlbumByIdAsync(int id);
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Task<AlbumResponse> CreateAlbumAsync(AlbumCreateRequest request, int creatorUserId);
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Task<AlbumResponse> UpdateAlbumAsync(int id, AlbumUpdateRequest request);
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Task<bool> DeleteAlbumAsync(int id);
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Task<BatchDeleteResult> BatchDeleteAlbumsAsync(List<int> ids);
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Task<PaginatedResult<AlbumResponse>> GetAlbumsByUserIdAsync(int userId, int page = 1, int pageSize = 10);
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Task<bool> AddPictureToAlbumAsync(int albumId, int pictureId);
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Task<bool> RemovePictureFromAlbumAsync(int albumId, int pictureId);
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Task<PaginatedResult<PictureResponse>> GetPicturesInAlbumAsync(int albumId, int page = 1, int pageSize = 10);
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Task<bool> SetAlbumCoverAsync(int albumId, int pictureId);
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}
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}
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