fix: align backend APIs and upload flow

FileService.Application/EventHandler/UploadTaskCompleteEventHandler.cs

@@ -16,22 +16,33 @@ namespace FileService.Application.EventHandler
         private readonly IObjectStorageRouter router;
         private readonly IUploadFileReposity uploadFile;
         private readonly IUnitOfWork uwork;
-        private readonly IStorageRedisCache storageCache;
+        private readonly IUploadTaskReposity uploadTask;
 
-        public UploadTaskCompleteEventHandler(IObjectStorageRouter router, IUploadFileReposity uploadFile, IUnitOfWork uwork, IStorageRedisCache storageCache)
+        public UploadTaskCompleteEventHandler(IObjectStorageRouter router, IUploadFileReposity uploadFile, IUploadTaskReposity uploadTask, IUnitOfWork uwork)
         {
             this.router = router;
             this.uploadFile = uploadFile;
             this.uwork = uwork;
-            this.storageCache = storageCache;
+            this.uploadTask = uploadTask;
         }
 
         public async Task Consume(ConsumeContext<UploadTaskCompleteEvent> context)
         {
             var @event = context.Message;
+            var existingFile = await uploadFile.FindBySourceTaskIdAsync(@event.TaskId);
+            if (existingFile != null)
+            {
+                return;
+            }
+
+            var task = await uploadTask.FindByIdAsync(@event.TaskId);
+            if (task is null)
+            {
+                throw new InvalidOperationException($"Upload task {@event.TaskId} has not been committed yet.");
+            }
+
             var storage = router.Route(@event.ProviderCode);
-            var taskCache = await storageCache.GetAsync(@event.SessionId);
-            if(@event.ProviderCode == "Local")
+            try
             {
                 await storage.CompleteUploadAsync(new StorageContracts.CompleteUploadCommand(
                     ProviderCode: @event.ProviderCode,
@@ -46,14 +57,27 @@ namespace FileService.Application.EventHandler
                             Checksum: s.Checksum
                         )).ToList()
                     ), context.CancellationToken);
-                uploadFile.Create(new Domain.Entities.UploadFile(
+                var file = new Domain.Entities.UploadFile(
                     ownerId: @event.OperatorId,
                     fileName: @event.FileName,
-                    fileSize: taskCache.FileSize,
+                    fileSize: @event.FileSize,
                     contentType: @event.ContentType,
-                    new Domain.ValueObjects.StorageLocation(taskCache.ProviderCode, taskCache.Bucket, taskCache.ObjectKey, taskCache.Region),
-                    checkSum: new Domain.ValueObjects.CheckSum("md5", @event.CheckSun)
-                    ));
+                    new Domain.ValueObjects.StorageLocation(@event.ProviderCode, @event.Bucket, @event.ObjectKey, @event.Region),
+                    checkSum: new Domain.ValueObjects.CheckSum("md5", @event.CheckSun),
+                    sourceTaskId: @event.TaskId,
+                    chatType: @event.ChatType,
+                    targetId: @event.TargetId,
+                    isPublic: false
+                    );
+                uploadFile.Create(file);
+                task.CompleteUpload(file.Id);
+                await uwork.SaveChangesAsync(context.CancellationToken);
+            }
+            catch (Exception ex)
+            {
+                task.Fail(ex.Message);
+                await uwork.SaveChangesAsync(context.CancellationToken);
+                throw;
             }
         }
     }

FileService.Application/StorageContracts/StorageDto.cs

@@ -60,6 +60,7 @@ namespace FileService.Application.StorageContracts
 
     public sealed record PresignedUrl(
         string Url,
+        string Method,
         IReadOnlyDictionary<string, string> Headers,
         DateTimeOffset ExpiresAt);
 

FileService.Application/UploadFile/FileResponse.cs

@@ -12,12 +12,14 @@ namespace FileService.Application.UploadFile
     {
         public Guid Id { get; set; }
         public Guid OwnerId { get; set; }
-        public FileName FileName { get; set; }
+        public string FileName { get; set; }
         public long FileSize { get; set; }
-        public ContentType ContentType { get; set; }
+        public string ContentType { get; set; }
         public FileState State { get; set; }
-        public StorageLocation StorageLocation { get; set; }
-        public CheckSum CheckSum { get; set; }
+        public string CheckSum { get; set; }
+        public string? ChatType { get; set; }
+        public Guid? TargetId { get; set; }
+        public bool IsPublic { get; set; }
         public DateTimeOffset Created { get; set; }
         public DateTimeOffset Updated { get; set; }
 

FileService.Application/UploadFile/IGroupAccessService.cs

@@ -0,0 +1,19 @@
+using System.Net.Http.Json;
+
+namespace FileService.Application.UploadFile
+{
+    public interface IGroupAccessService
+    {
+        Task<bool> CheckMemberAsync(Guid userId, Guid groupId);
+    }
+
+    public class GroupAccessService(HttpClient httpClient) : IGroupAccessService
+    {
+        public async Task<bool> CheckMemberAsync(Guid userId, Guid groupId)
+        {
+            var result = await httpClient.GetFromJsonAsync<IM.Commons.Result<bool>>(
+                $"api/groupmember/checkmember?userId={userId}&groupId={groupId}");
+            return result?.Succeeded == true && result.Data;
+        }
+    }
+}

FileService.Application/UploadFile/UploadFileMapperConfig.cs

@@ -12,8 +12,11 @@ namespace FileService.Application.UploadFile
         public UploadFileMapperConfig()
         {
             CreateMap<Domain.Entities.UploadFile, FileResponse>()
+                .ForMember(dest => dest.FileName, opt => opt.MapFrom(src => src.FileName.Value))
+                .ForMember(dest => dest.ContentType, opt => opt.MapFrom(src => src.ContentType.Value))
+                .ForMember(dest => dest.CheckSum, opt => opt.MapFrom(src => src.CheckSum.Value))
                 .ForMember(dest => dest.Created, opt => opt.MapFrom(src => src.CreationTime))
-                .ForMember(dest => dest.Updated, opt => opt.MapFrom(src => src.ModificationTime))
+                .ForMember(dest => dest.Updated, opt => opt.MapFrom(src => src.ModificationTime ?? src.CreationTime))
                 ;
         }
     }

FileService.Application/UploadFile/UploadFileService.cs

@@ -6,6 +6,7 @@ using FileService.Domain.ValueObjects;
 using IM.Commons;
 using IM.InitCommon;
 using Microsoft.Extensions.Options;
+using System.Security.Cryptography;
 
 namespace FileService.Application.UploadFile
 {
@@ -15,27 +16,35 @@ namespace FileService.Application.UploadFile
         private readonly IMapper mapper;
         private readonly IObjectStorageRouter router;
         private readonly IOptions<StorageOptions> options;
+        private readonly IGroupAccessService groupAccessService;
 
         public UploadFileService(IUploadFileReposity reposity, IMapper mapper,
-            IObjectStorageRouter router, IOptions<StorageOptions> options)
+            IObjectStorageRouter router, IOptions<StorageOptions> options,
+            IGroupAccessService groupAccessService)
         {
             this.reposity = reposity;
             this.mapper = mapper;
             this.router = router;
             this.options = options;
+            this.groupAccessService = groupAccessService;
         }
 
-        public async Task<Result<FileResponse>> GetFileInfoAsync(Guid id)
+        public async Task<Result<FileResponse>> GetFileInfoAsync(Guid id, Guid requesterId)
         {
             var file = await reposity.FindByIdAsync(id);
             if (file == null)
             {
                 return Result.Fail<FileResponse>(ResultCode.FILE_NOT_FOUND);
             }
+            if (!await CanAccessAsync(file, requesterId))
+            {
+                return Result.Fail<FileResponse>(ResultCode.PERMISSION_DENIED);
+            }
 
             var response = mapper.Map<FileResponse>(file);
             response.Url = router.Route(file.StorageLocation.StorageProvider)
                 .GetPublicUrl(file.StorageLocation);
+            response.IsPublic = response.IsPublic || response.Url != null;
             return Result.Success(response);
         }
 
@@ -45,15 +54,29 @@ namespace FileService.Application.UploadFile
         /// </summary>
         public async Task<Result<FileResponse>> SimpleUploadAsync(SimpleUploadCommand command, CancellationToken token = default)
         {
-            // 秒传：相同 checksum 的文件已存在则直接返回已有记录
-            if (!string.IsNullOrEmpty(command.CheckSum))
+            var checksum = command.CheckSum;
+            if (string.IsNullOrWhiteSpace(checksum))
             {
-                var existing = await reposity.FindByCheckSumGlobalAsync("md5", command.CheckSum);
-                if (existing != null)
+                var hash = await MD5.HashDataAsync(command.Content, token);
+                checksum = Convert.ToHexString(hash).ToLowerInvariant();
+                if (command.Content.CanSeek)
+                {
+                    command.Content.Position = 0;
+                }
+            }
+            // 秒传：相同 checksum 的文件已存在则直接返回已有记录
+            if (!string.IsNullOrEmpty(checksum))
+            {
+                var existing = await reposity.FindByCheckSumGlobalAsync("md5", checksum);
+                var existingPublicUrl = existing == null
+                    ? null
+                    : router.Route(existing.StorageLocation.StorageProvider).GetPublicUrl(existing.StorageLocation);
+                if (existing != null && (existingPublicUrl != null ||
+                    (!command.IsPublic && existing.OwnerId == command.OwnerId)))
                 {
                     var hit = mapper.Map<FileResponse>(existing);
-                    var hitStorage = router.Route(existing.StorageLocation.StorageProvider);
-                    hit.Url = hitStorage.GetPublicUrl(existing.StorageLocation);
+                    hit.Url = existingPublicUrl;
+                    hit.IsPublic = hit.IsPublic || hit.Url != null;
                     return Result.Success(hit);
                 }
             }
@@ -84,7 +107,8 @@ namespace FileService.Application.UploadFile
                 fileSize: command.FileSize,
                 contentType: command.ContentType,
                 storageLocation: location,
-                checkSum: new CheckSum("md5", command.CheckSum ?? string.Empty));
+                checkSum: new CheckSum("md5", checksum),
+                isPublic: command.IsPublic);
 
             reposity.Create(file);
 
@@ -103,6 +127,10 @@ namespace FileService.Application.UploadFile
             {
                 return Result.Fail<FileDownload>(ResultCode.FILE_NOT_FOUND);
             }
+            if (!await CanAccessAsync(file, requesterId))
+            {
+                return Result.Fail<FileDownload>(ResultCode.PERMISSION_DENIED);
+            }
 
             var stream = await router.Route(file.StorageLocation.StorageProvider)
                 .OpenReadAsync(file.StorageLocation, token);
@@ -113,17 +141,33 @@ namespace FileService.Application.UploadFile
                 file.FileName.Value));
         }
 
-        // FileName 值对象限制 20 字符；原始名超长时安全截断（保留扩展名），真实文件名由 objectKey 保证唯一。
+        private async Task<bool> CanAccessAsync(Domain.Entities.UploadFile file, Guid requesterId)
+        {
+            var publicUrl = router.Route(file.StorageLocation.StorageProvider).GetPublicUrl(file.StorageLocation);
+            if (file.IsPublic || publicUrl != null || file.OwnerId == requesterId) return true;
+            if (string.Equals(file.ChatType, "PRIVATE", StringComparison.OrdinalIgnoreCase))
+            {
+                return file.TargetId == requesterId;
+            }
+            if (string.Equals(file.ChatType, "GROUP", StringComparison.OrdinalIgnoreCase) && file.TargetId.HasValue)
+            {
+                return await groupAccessService.CheckMemberAsync(requesterId, file.TargetId.Value);
+            }
+            return false;
+        }
+
+        // 文件名超长时安全截断（保留扩展名），真实存储键由 objectKey 保证唯一。
         private static FileName SafeFileName(string fileName)
         {
-            if (fileName.Length <= 20)
+            const int maxFileNameLength = 255;
+            if (fileName.Length <= maxFileNameLength)
             {
                 return new FileName(fileName);
             }
 
             var ext = Path.GetExtension(fileName);
             var stem = Path.GetFileNameWithoutExtension(fileName);
-            var keep = Math.Max(0, 20 - ext.Length);
+            var keep = Math.Max(0, maxFileNameLength - ext.Length);
             return new FileName(stem[..Math.Min(stem.Length, keep)] + ext);
         }
     }

FileService.Application/UploadFileTask/TaskInitResponse.cs

@@ -13,5 +13,10 @@ namespace FileService.Application.UploadFileTask
         public string UploadSessionId { get; init; }
 
         public StorageLocation StorageLocation { get; init; }
+        public bool Instant { get; init; }
+        public string UploadMode { get; init; } = "LocalMultipart";
+        public int TotalPartCount { get; init; }
+        public long PartSizeBytes { get; init; }
+        public global::FileService.Application.UploadFile.FileResponse? File { get; init; }
     }
 }

FileService.Application/UploadFileTask/UploadFileTaskService.cs

@@ -33,14 +33,22 @@ namespace FileService.Application.UploadFileTask
 
             // 秒传：相同 checksum 的文件若已存在于已完成文件表，直接返回已有记录
             var existingFile = await uploadFileReposity.FindByCheckSumGlobalAsync("md5", command.checkSum);
-            if (existingFile != null)
+            if (existingFile != null && CanReuse(existingFile, command))
             {
                 var storageForResponse = router.Route(existingFile.StorageLocation.StorageProvider);
+                var fileResponse = mapper.Map<UploadFile.FileResponse>(existingFile);
+                fileResponse.Url = storageForResponse.GetPublicUrl(existingFile.StorageLocation);
+                fileResponse.IsPublic = fileResponse.IsPublic || fileResponse.Url != null;
                 return Result.Success(new TaskInitResponse
                 {
                     TaskId = existingFile.Id,
                     UploadSessionId = existingFile.Id.ToString(),
-                    StorageLocation = existingFile.StorageLocation
+                    StorageLocation = existingFile.StorageLocation,
+                    Instant = true,
+                    UploadMode = "Instant",
+                    TotalPartCount = 0,
+                    PartSizeBytes = 0,
+                    File = fileResponse
                 });
             }
 
@@ -70,6 +78,18 @@ namespace FileService.Application.UploadFileTask
 
             var res = mapper.Map<TaskInitResponse>(initRes);
             res.TaskId = task.Id;
+            res = new TaskInitResponse
+            {
+                TaskId = task.Id,
+                UploadSessionId = initRes.UploadSessionId,
+                StorageLocation = initRes.Location,
+                Instant = false,
+                UploadMode = string.Equals(storage.ProviderCode, "Local", StringComparison.OrdinalIgnoreCase)
+                    ? "LocalMultipart"
+                    : "Presigned",
+                TotalPartCount = totalPartCount,
+                PartSizeBytes = storageOption.DefaultPartSizeBytes
+            };
 
             task.StartUpload();
             reposity.Create(task);
@@ -97,6 +117,12 @@ namespace FileService.Application.UploadFileTask
                 return Result.Fail<PresignedUrl>(ResultCode.CHUNK_NOT_FOUND);
             }
 
+            var task = await reposity.FindByIdAsync(Guid.Parse(taskCache.TaskId));
+            if (task is null || task.UploaderId != userId)
+            {
+                return Result.Fail<PresignedUrl>(ResultCode.PERMISSION_DENIED);
+            }
+
             if (taskCache.TotalPartCount < partNum || partNum < 1)
             {
                 return Result.Fail<PresignedUrl>(ResultCode.INVALID_PART_NUMBER);
@@ -123,13 +149,31 @@ namespace FileService.Application.UploadFileTask
                 return Result.Fail<UploadTaskResponse>(ResultCode.CHUNK_NOT_FOUND);
             }
 
+            var task = await reposity.FindByIdAsync(Guid.Parse(taskCache.TaskId));
+            if (task is null)
+            {
+                return Result.Fail<UploadTaskResponse>(ResultCode.CHUNK_NOT_FOUND);
+            }
+            if (task.UploaderId != command.userId)
+            {
+                return Result.Fail<UploadTaskResponse>(ResultCode.PERMISSION_DENIED);
+            }
+
             // 校验分片数量必须匹配
             if (command.Parts.Count != taskCache.TotalPartCount)
             {
                 return Result.Fail<UploadTaskResponse>(ResultCode.PART_COUNT_MISMATCH);
             }
 
-            // 校验所有分片都已在上传缓存中注册
+            var expectedPartNumbers = Enumerable.Range(1, taskCache.TotalPartCount).ToHashSet();
+            if (!expectedPartNumbers.SetEquals(command.Parts.Select(x => x.PartNumber)))
+            {
+                return Result.Fail<UploadTaskResponse>(ResultCode.INVALID_PART_NUMBER);
+            }
+
+            // 本地分片必须由本服务接收；预签名模式由对象存储在完成合并时校验 ETag。
+            if (string.Equals(taskCache.ProviderCode, "Local", StringComparison.OrdinalIgnoreCase))
+            {
                 foreach (var part in command.Parts)
                 {
                     if (!taskCache.Parts.TryGetValue(part.PartNumber, out _))
@@ -137,10 +181,26 @@ namespace FileService.Application.UploadFileTask
                         return Result.Fail<UploadTaskResponse>(ResultCode.CHUNK_NOT_FOUND);
                     }
                 }
+            }
 
-            var task = await reposity.FindByIdAsync(Guid.Parse(taskCache.TaskId));
+            if (task.State == Domain.UploadTaskState.Completed)
+            {
+                var completedResponse = mapper.Map<UploadTaskResponse>(task);
+                if (task.ResultFileId.HasValue)
+                {
+                    var file = await uploadFileReposity.FindByIdAsync(task.ResultFileId.Value);
+                    if (file != null)
+                    {
+                        completedResponse.File = mapper.Map<UploadFile.FileResponse>(file);
+                        completedResponse.File.Url = router.Route(file.StorageLocation.StorageProvider)
+                            .GetPublicUrl(file.StorageLocation);
+                        completedResponse.File.IsPublic = completedResponse.File.IsPublic || completedResponse.File.Url != null;
+                    }
+                }
+                return Result.Success(completedResponse);
+            }
 
-            task.CompleteUpload(new Domain.ValueObjects.StorageLocation(
+            task.StartMerging(new Domain.ValueObjects.StorageLocation(
                     taskCache.ProviderCode, taskCache.Bucket,
                     taskCache.ObjectKey, taskCache.Region
                 ));
@@ -162,19 +222,26 @@ namespace FileService.Application.UploadFileTask
                 FileSize = task.FileSize,
                 ContentType = task.ContentType.ToString(),
                 CheckSun = task.CheckSum.Value
+                ,ChatType = task.ChatType
+                ,TargetId = task.TargetId
 
             }, cancellationToken);
 
             return Result.Success(mapper.Map<UploadTaskResponse>(task));
         }
 
-        public async Task<Result<CompleteUploadResult>> UploadPartAsync(UploadPartCommand command)
+        public async Task<Result<CompleteUploadResult>> UploadPartAsync(UploadPartCommand command, Guid userId)
         {
             var taskCache = await redis.GetAsync(command.SessionId);
             if (taskCache is null)
             {
                 return Result.Fail<CompleteUploadResult>(ResultCode.CHUNK_NOT_FOUND);
             }
+            var task = await reposity.FindByIdAsync(Guid.Parse(taskCache.TaskId));
+            if (task is null || task.UploaderId != userId)
+            {
+                return Result.Fail<CompleteUploadResult>(ResultCode.PERMISSION_DENIED);
+            }
 
             var minPartSize = options.Value.Providers[options.Value.DefaultProviderCode].MinPartSizeBytes;
 
@@ -213,6 +280,11 @@ namespace FileService.Application.UploadFileTask
             {
                 return Result.Fail<UploadProgressResponse>(ResultCode.CHUNK_NOT_FOUND);
             }
+            var task = await reposity.FindByIdAsync(Guid.Parse(taskCache.TaskId));
+            if (task is null || task.UploaderId != userId)
+            {
+                return Result.Fail<UploadProgressResponse>(ResultCode.PERMISSION_DENIED);
+            }
 
             var response = new UploadProgressResponse
             {
@@ -229,5 +301,54 @@ namespace FileService.Application.UploadFileTask
 
             return Result.Success(response);
         }
+
+        private bool CanReuse(Domain.Entities.UploadFile file, UploadTaskInitCommand command)
+        {
+            var publicUrl = router.Route(file.StorageLocation.StorageProvider).GetPublicUrl(file.StorageLocation);
+            if (file.IsPublic || publicUrl != null) return true;
+            if (file.OwnerId == command.UploaderId)
+            {
+                return string.Equals(file.ChatType, command.ChatType, StringComparison.OrdinalIgnoreCase) &&
+                    file.TargetId == command.TargetId;
+            }
+            if (string.Equals(file.ChatType, "GROUP", StringComparison.OrdinalIgnoreCase))
+            {
+                return string.Equals(command.ChatType, "GROUP", StringComparison.OrdinalIgnoreCase) &&
+                    file.TargetId == command.TargetId;
+            }
+            if (string.Equals(file.ChatType, "PRIVATE", StringComparison.OrdinalIgnoreCase))
+            {
+                return string.Equals(command.ChatType, "PRIVATE", StringComparison.OrdinalIgnoreCase) &&
+                    file.TargetId == command.UploaderId && command.TargetId == file.OwnerId;
+            }
+            return false;
+        }
+
+        public async Task<Result<UploadTaskResponse>> GetStatusAsync(Guid taskId, Guid userId)
+        {
+            var task = await reposity.FindByIdAsync(taskId);
+            if (task is null)
+            {
+                return Result.Fail<UploadTaskResponse>(ResultCode.CHUNK_NOT_FOUND);
+            }
+            if (task.UploaderId != userId)
+            {
+                return Result.Fail<UploadTaskResponse>(ResultCode.PERMISSION_DENIED);
+            }
+
+            var response = mapper.Map<UploadTaskResponse>(task);
+            if (task.ResultFileId.HasValue)
+            {
+                var file = await uploadFileReposity.FindByIdAsync(task.ResultFileId.Value);
+                if (file != null)
+                {
+                    response.File = mapper.Map<UploadFile.FileResponse>(file);
+                    response.File.Url = router.Route(file.StorageLocation.StorageProvider)
+                        .GetPublicUrl(file.StorageLocation);
+                    response.File.IsPublic = response.File.IsPublic || response.File.Url != null;
+                }
+            }
+            return Result.Success(response);
+        }
     }
 }

FileService.Application/UploadFileTask/UploadTaskInitCommand.cs

@@ -8,7 +8,7 @@ namespace FileService.Application.UploadFileTask
 {
     public record UploadTaskInitCommand(
         Guid UploaderId, 
-        Guid ConversationId, string FileName,
+        Guid ConversationId, string? ChatType, Guid? TargetId, string FileName,
         long FileSize,string contentType,
         string checkSum
         )
@@ -17,7 +17,7 @@ namespace FileService.Application.UploadFileTask
         {
             return new Domain.Entities.UploadTask(
                     UploaderId,
-                    ConversationId, FileName, FileSize, contentType,
+                    ConversationId, ChatType, TargetId, FileName, FileSize, contentType,
                     null,new Domain.ValueObjects.CheckSum("md5", checkSum)
                 );
         }

FileService.Application/UploadFileTask/UploadTaskResponse.cs

@@ -19,5 +19,8 @@ namespace FileService.Application.UploadFileTask
         public StorageLocation StorageLocation { get; set; }
         public string State { get; set; }
         public string CheckSum { get; set; }
+        public Guid? ResultFileId { get; set; }
+        public string? FailureReason { get; set; }
+        public global::FileService.Application.UploadFile.FileResponse? File { get; set; }
     }
 }

FileService.Domain/Entities/UploadFile.cs

@@ -12,10 +12,14 @@ namespace FileService.Domain.Entities
         public FileState State { get; private set; } = FileState.Uploaded;
         public StorageLocation StorageLocation { get; private set; } = new StorageLocation();
         public CheckSum CheckSum { get; private set; }
+        public Guid? SourceTaskId { get; private set; }
+        public string? ChatType { get; private set; }
+        public Guid? TargetId { get; private set; }
+        public bool IsPublic { get; private set; }
 
         private UploadFile() { }
 
-        public UploadFile(Guid ownerId, FileName fileName, long fileSize, ContentType contentType, StorageLocation? storageLocation, CheckSum checkSum)
+        public UploadFile(Guid ownerId, FileName fileName, long fileSize, ContentType contentType, StorageLocation? storageLocation, CheckSum checkSum, Guid? sourceTaskId = null, string? chatType = null, Guid? targetId = null, bool isPublic = false)
         {
             OwnerId = ownerId;
             FileName = fileName;
@@ -23,6 +27,10 @@ namespace FileService.Domain.Entities
             ContentType = contentType;
             StorageLocation = storageLocation ?? new StorageLocation();
             CheckSum = checkSum;
+            SourceTaskId = sourceTaskId;
+            ChatType = chatType?.ToUpperInvariant();
+            TargetId = targetId;
+            IsPublic = isPublic;
             State = FileState.Uploaded;
         }
 

FileService.Domain/Entities/UploadTask.cs

@@ -8,19 +8,25 @@ namespace FileService.Domain.Entities
     {
         public Guid UploaderId { get; private set; }
         public Guid ConversationId { get; private set; }
+        public string? ChatType { get; private set; }
+        public Guid? TargetId { get; private set; }
         public FileName FileName { get; private set; }
         public long FileSize { get; private set; }
         public ContentType ContentType { get; private set; }
         public StorageLocation StorageLocation { get; private set; }
         public UploadTaskState State { get; private set; }
         public CheckSum CheckSum { get; private set; }
+        public Guid? ResultFileId { get; private set; }
+        public string? FailureReason { get; private set; }
 
         private UploadTask() { }
 
-        public UploadTask(Guid uploaderId, Guid conversationId, FileName fileName, long fileSize, ContentType contentType, StorageLocation? storageLocation, CheckSum checkSum)
+        public UploadTask(Guid uploaderId, Guid conversationId, string? chatType, Guid? targetId, FileName fileName, long fileSize, ContentType contentType, StorageLocation? storageLocation, CheckSum checkSum)
         {
             UploaderId = uploaderId;
             ConversationId = conversationId;
+            ChatType = chatType?.ToUpperInvariant();
+            TargetId = targetId;
             FileName = fileName;
             FileSize = fileSize;
             ContentType = contentType;
@@ -33,16 +39,28 @@ namespace FileService.Domain.Entities
             State = UploadTaskState.Uploading;
         }
 
-        public void CompleteUpload(StorageLocation location)
+        public void StartMerging(StorageLocation location)
         {
+            StorageLocation = location;
+            State = UploadTaskState.Merging;
+            FailureReason = null;
+            NotifyModified();
+        }
+
+        public void CompleteUpload(Guid fileId)
+        {
+            ResultFileId = fileId;
             State = UploadTaskState.Completed;
+            FailureReason = null;
+            NotifyModified();
             AddDomainEvent(new UploadTaskCompletedDomainEvent(this));
         }
 
-        public void Fail()
+        public void Fail(string reason)
         {
             State = UploadTaskState.Failed;
-
+            FailureReason = reason.Length > 500 ? reason[..500] : reason;
+            NotifyModified();
         }
     }
 }

FileService.Domain/IReposities/IUploadFileReposity.cs

@@ -19,5 +19,6 @@ namespace FileService.Domain.IReposities
         /// 全局按 checksum 查询（用于跨用户秒传去重）
         /// </summary>
         Task<UploadFile?> FindByCheckSumGlobalAsync(string algorithm, string value);
+        Task<UploadFile?> FindBySourceTaskIdAsync(Guid taskId);
     }
 }

FileService.Domain/ValueObjects/FileName.cs

@@ -12,9 +12,9 @@ namespace FileService.Domain.ValueObjects
 
         public FileName(string value)
         {
-            if(value.Length > 20)
+            if (string.IsNullOrWhiteSpace(value) || value.Length > 255)
             {
-                throw new ArgumentException("文件名超出长度");
+                throw new ArgumentException("文件名不能为空且不能超过 255 个字符");
             }
 
             Value = value;

FileService.Infrastructure/Configs/UploadFileConfig.cs

@@ -15,12 +15,14 @@ namespace FileService.Infrastructure.Configs
         {
             builder.ToTable("upload_files");
             builder.Property(x => x.FileName)
+                .HasMaxLength(255)
                 .HasConversion(
                     a => a.Value,
                     b => new Domain.ValueObjects.FileName(b)
                 );
 
             builder.Property(x => x.ContentType)
+                .HasMaxLength(255)
                 .HasConversion(
                     a => a.Value,
                     b => new Domain.ValueObjects.ContentType(b)
@@ -29,24 +31,32 @@ namespace FileService.Infrastructure.Configs
             builder.ComplexProperty(x => x.CheckSum, c =>
             {
                 c.Property(p => p.Value)
+                    .HasMaxLength(128)
                     .HasColumnName("checksum_value");
 
                 c.Property(p => p.Algorithm)
+                    .HasMaxLength(16)
                     .HasColumnName("checksum_algorithm");
             });
+            builder.HasIndex(x => x.SourceTaskId).IsUnique();
+            builder.Property(x => x.ChatType).HasMaxLength(16);
 
             builder.ComplexProperty(x => x.StorageLocation, c =>
             {
                 c.Property(p => p.StorageProvider)
+                    .HasMaxLength(64)
                     .HasColumnName("storage_provider");
 
                 c.Property(p => p.ObjectKey)
+                    .HasMaxLength(1024)
                     .HasColumnName("storage_key");
 
                 c.Property(p => p.Region)
+                    .HasMaxLength(128)
                     .HasColumnName("storage_region");
 
                 c.Property(p => p.Bucket)
+                    .HasMaxLength(255)
                     .HasColumnName("storage_bucket");
             });
         }

FileService.Infrastructure/Configs/UploadTaskConfig.cs

@@ -15,12 +15,14 @@ namespace FileService.Infrastructure.Configs
         {
             builder.ToTable("upload_tasks");
             builder.Property(x => x.FileName)
+                .HasMaxLength(255)
                 .HasConversion(
                     a => a.Value,
                     b => new Domain.ValueObjects.FileName(b)
                 );
 
             builder.Property(x => x.ContentType)
+                .HasMaxLength(255)
                 .HasConversion(
                     a => a.Value,
                     b => new Domain.ValueObjects.ContentType(b)
@@ -29,24 +31,32 @@ namespace FileService.Infrastructure.Configs
             builder.ComplexProperty(x => x.CheckSum, c =>
             {
                 c.Property(p => p.Value)
+                    .HasMaxLength(128)
                     .HasColumnName("checksum_value");
 
                 c.Property(p => p.Algorithm)
+                    .HasMaxLength(16)
                     .HasColumnName("checksum_algorithm");
             });
+            builder.Property(x => x.FailureReason).HasMaxLength(500);
+            builder.Property(x => x.ChatType).HasMaxLength(16);
 
             builder.ComplexProperty(x => x.StorageLocation, c =>
             {
                 c.Property(p => p.StorageProvider)
+                    .HasMaxLength(64)
                     .HasColumnName("storage_provider");
 
                 c.Property(p => p.ObjectKey)
+                    .HasMaxLength(1024)
                     .HasColumnName("storage_key");
 
                 c.Property(p => p.Region)
+                    .HasMaxLength(128)
                     .HasColumnName("storage_region");
 
                 c.Property(p => p.Bucket)
+                    .HasMaxLength(255)
                     .HasColumnName("storage_bucket");
             });
         }

FileService.Infrastructure/Migrations/20260909000300_AsyncUploadResult.cs

@@ -0,0 +1,131 @@
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace FileService.Infrastructure.Migrations
+{
+    [DbContext(typeof(FileDbContext))]
+    [Migration("20260909000300_AsyncUploadResult")]
+    public partial class AsyncUploadResult : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            AlterStringColumns(migrationBuilder, narrowing: true);
+
+            migrationBuilder.AddColumn<string>(
+                name: "ChatType",
+                table: "upload_files",
+                type: "varchar(16)",
+                maxLength: 16,
+                nullable: true);
+
+            migrationBuilder.AddColumn<bool>(
+                name: "IsPublic",
+                table: "upload_files",
+                type: "tinyint(1)",
+                nullable: false,
+                defaultValue: false);
+
+            migrationBuilder.AddColumn<Guid>(
+                name: "SourceTaskId",
+                table: "upload_files",
+                type: "char(36)",
+                nullable: true);
+
+            migrationBuilder.AddColumn<Guid>(
+                name: "TargetId",
+                table: "upload_files",
+                type: "char(36)",
+                nullable: true);
+
+            migrationBuilder.AddColumn<string>(
+                name: "ChatType",
+                table: "upload_tasks",
+                type: "varchar(16)",
+                maxLength: 16,
+                nullable: true);
+
+            migrationBuilder.AddColumn<string>(
+                name: "FailureReason",
+                table: "upload_tasks",
+                type: "varchar(500)",
+                maxLength: 500,
+                nullable: true);
+
+            migrationBuilder.AddColumn<Guid>(
+                name: "ResultFileId",
+                table: "upload_tasks",
+                type: "char(36)",
+                nullable: true);
+
+            migrationBuilder.AddColumn<Guid>(
+                name: "TargetId",
+                table: "upload_tasks",
+                type: "char(36)",
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_upload_files_SourceTaskId",
+                table: "upload_files",
+                column: "SourceTaskId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_upload_files_checksum",
+                table: "upload_files",
+                columns: new[] { "checksum_algorithm", "checksum_value", "IsDeleted" });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex("IX_upload_files_checksum", "upload_files");
+            migrationBuilder.DropIndex("IX_upload_files_SourceTaskId", "upload_files");
+            migrationBuilder.DropColumn("ChatType", "upload_files");
+            migrationBuilder.DropColumn("IsPublic", "upload_files");
+            migrationBuilder.DropColumn("SourceTaskId", "upload_files");
+            migrationBuilder.DropColumn("TargetId", "upload_files");
+            migrationBuilder.DropColumn("ChatType", "upload_tasks");
+            migrationBuilder.DropColumn("FailureReason", "upload_tasks");
+            migrationBuilder.DropColumn("ResultFileId", "upload_tasks");
+            migrationBuilder.DropColumn("TargetId", "upload_tasks");
+            AlterStringColumns(migrationBuilder, narrowing: false);
+        }
+
+
+        private static void AlterStringColumns(MigrationBuilder migrationBuilder, bool narrowing)
+        {
+            var columns = new (string Table, string Column, int Length, bool Nullable)[]
+            {
+                ("upload_files", "FileName", 255, false),
+                ("upload_files", "ContentType", 255, false),
+                ("upload_files", "checksum_algorithm", 16, false),
+                ("upload_files", "checksum_value", 128, false),
+                ("upload_files", "storage_provider", 64, false),
+                ("upload_files", "storage_bucket", 255, false),
+                ("upload_files", "storage_key", 1024, false),
+                ("upload_files", "storage_region", 128, true),
+                ("upload_tasks", "FileName", 255, false),
+                ("upload_tasks", "ContentType", 255, false),
+                ("upload_tasks", "checksum_algorithm", 16, false),
+                ("upload_tasks", "checksum_value", 128, false),
+                ("upload_tasks", "storage_provider", 64, false),
+                ("upload_tasks", "storage_bucket", 255, false),
+                ("upload_tasks", "storage_key", 1024, false),
+                ("upload_tasks", "storage_region", 128, true)
+            };
+
+            foreach (var (table, column, length, nullable) in columns)
+            {
+                migrationBuilder.AlterColumn<string>(
+                    name: column,
+                    table: table,
+                    type: narrowing ? $"varchar({length})" : "longtext",
+                    maxLength: narrowing ? length : null,
+                    nullable: nullable,
+                    oldClrType: typeof(string),
+                    oldType: narrowing ? "longtext" : $"varchar({length})",
+                    oldMaxLength: narrowing ? null : length,
+                    oldNullable: nullable);
+            }
+        }
+    }
+}

FileService.Infrastructure/Migrations/FileDbContextModelSnapshot.cs

@@ -25,13 +25,18 @@ namespace FileService.Infrastructure.Migrations
 
             modelBuilder.Entity("FileService.Domain.Entities.UploadFile", b =>
                 {
+                    b.Property<string>("ChatType")
+                        .HasMaxLength(16)
+                        .HasColumnType("varchar(16)");
+
                     b.Property<Guid>("Id")
                         .ValueGeneratedOnAdd()
                         .HasColumnType("char(36)");
 
                     b.Property<string>("ContentType")
                         .IsRequired()
-                        .HasColumnType("longtext");
+                        .HasMaxLength(255)
+                        .HasColumnType("varchar(255)");
 
                     b.Property<DateTimeOffset>("CreationTime")
                         .HasColumnType("datetime(6)");
@@ -41,7 +46,8 @@ namespace FileService.Infrastructure.Migrations
 
                     b.Property<string>("FileName")
                         .IsRequired()
-                        .HasColumnType("longtext");
+                        .HasMaxLength(255)
+                        .HasColumnType("varchar(255)");
 
                     b.Property<long>("FileSize")
                         .HasColumnType("bigint");
@@ -49,27 +55,38 @@ namespace FileService.Infrastructure.Migrations
                     b.Property<bool>("IsDeleted")
                         .HasColumnType("tinyint(1)");
 
+                    b.Property<bool>("IsPublic")
+                        .HasColumnType("tinyint(1)");
+
                     b.Property<DateTimeOffset?>("ModificationTime")
                         .HasColumnType("datetime(6)");
 
                     b.Property<Guid>("OwnerId")
                         .HasColumnType("char(36)");
 
+                    b.Property<Guid?>("SourceTaskId")
+                        .HasColumnType("char(36)");
+
                     b.Property<int>("State")
                         .HasColumnType("int");
 
+                    b.Property<Guid?>("TargetId")
+                        .HasColumnType("char(36)");
+
                     b.ComplexProperty<Dictionary<string, object>>("CheckSum", "FileService.Domain.Entities.UploadFile.CheckSum#CheckSum", b1 =>
                         {
                             b1.IsRequired();
 
                             b1.Property<string>("Algorithm")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(16)
+                                .HasColumnType("varchar(16)")
                                 .HasColumnName("checksum_algorithm");
 
                             b1.Property<string>("Value")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(128)
+                                .HasColumnType("varchar(128)")
                                 .HasColumnName("checksum_value");
                         });
 
@@ -79,38 +96,50 @@ namespace FileService.Infrastructure.Migrations
 
                             b1.Property<string>("Bucket")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(255)
+                                .HasColumnType("varchar(255)")
                                 .HasColumnName("storage_bucket");
 
                             b1.Property<string>("ObjectKey")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(1024)
+                                .HasColumnType("varchar(1024)")
                                 .HasColumnName("storage_key");
 
                             b1.Property<string>("Region")
-                                .HasColumnType("longtext")
+                                .HasMaxLength(128)
+                                .HasColumnType("varchar(128)")
                                 .HasColumnName("storage_region");
 
                             b1.Property<string>("StorageProvider")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(64)
+                                .HasColumnType("varchar(64)")
                                 .HasColumnName("storage_provider");
                         });
 
                     b.HasKey("Id");
 
+                    b.HasIndex("SourceTaskId")
+                        .IsUnique();
+
                     b.ToTable("upload_files", (string)null);
                 });
 
             modelBuilder.Entity("FileService.Domain.Entities.UploadTask", b =>
                 {
+                    b.Property<string>("ChatType")
+                        .HasMaxLength(16)
+                        .HasColumnType("varchar(16)");
+
                     b.Property<Guid>("Id")
                         .ValueGeneratedOnAdd()
                         .HasColumnType("char(36)");
 
                     b.Property<string>("ContentType")
                         .IsRequired()
-                        .HasColumnType("longtext");
+                        .HasMaxLength(255)
+                        .HasColumnType("varchar(255)");
 
                     b.Property<Guid>("ConversationId")
                         .HasColumnType("char(36)");
@@ -123,20 +152,31 @@ namespace FileService.Infrastructure.Migrations
 
                     b.Property<string>("FileName")
                         .IsRequired()
-                        .HasColumnType("longtext");
+                        .HasMaxLength(255)
+                        .HasColumnType("varchar(255)");
 
                     b.Property<long>("FileSize")
                         .HasColumnType("bigint");
 
+                    b.Property<string>("FailureReason")
+                        .HasMaxLength(500)
+                        .HasColumnType("varchar(500)");
+
                     b.Property<bool>("IsDeleted")
                         .HasColumnType("tinyint(1)");
 
                     b.Property<DateTimeOffset?>("ModificationTime")
                         .HasColumnType("datetime(6)");
 
+                    b.Property<Guid?>("ResultFileId")
+                        .HasColumnType("char(36)");
+
                     b.Property<int>("State")
                         .HasColumnType("int");
 
+                    b.Property<Guid?>("TargetId")
+                        .HasColumnType("char(36)");
+
                     b.Property<Guid>("UploaderId")
                         .HasColumnType("char(36)");
 
@@ -146,12 +186,14 @@ namespace FileService.Infrastructure.Migrations
 
                             b1.Property<string>("Algorithm")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(16)
+                                .HasColumnType("varchar(16)")
                                 .HasColumnName("checksum_algorithm");
 
                             b1.Property<string>("Value")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(128)
+                                .HasColumnType("varchar(128)")
                                 .HasColumnName("checksum_value");
                         });
 
@@ -161,21 +203,25 @@ namespace FileService.Infrastructure.Migrations
 
                             b1.Property<string>("Bucket")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(255)
+                                .HasColumnType("varchar(255)")
                                 .HasColumnName("storage_bucket");
 
                             b1.Property<string>("ObjectKey")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(1024)
+                                .HasColumnType("varchar(1024)")
                                 .HasColumnName("storage_key");
 
                             b1.Property<string>("Region")
-                                .HasColumnType("longtext")
+                                .HasMaxLength(128)
+                                .HasColumnType("varchar(128)")
                                 .HasColumnName("storage_region");
 
                             b1.Property<string>("StorageProvider")
                                 .IsRequired()
-                                .HasColumnType("longtext")
+                                .HasMaxLength(64)
+                                .HasColumnType("varchar(64)")
                                 .HasColumnName("storage_provider");
                         });
 

FileService.Infrastructure/Reposites/UploadFileReposity.cs

@@ -42,5 +42,10 @@ namespace FileService.Infrastructure.Reposites
                     x.CheckSum.Value == value
             );
         }
+
+        public Task<UploadFile?> FindBySourceTaskIdAsync(Guid taskId)
+        {
+            return db.Files.FirstOrDefaultAsync(x => x.SourceTaskId == taskId);
+        }
     }
 }

FileService.Infrastructure/Storage/LocalStorageAdapter.cs

@@ -132,6 +132,7 @@ namespace FileService.Infrastructure.Storage
             var baseUrl = options.Value.Providers[options.Value.DefaultProviderCode].LocalUploadApiBaseUrl;
             return new PresignedUrl(
                 baseUrl + $"local/parts/upload?sessionId={command.UploadSessionId}&partNumber={command.PartNumber}",
+                "POST",
                 new Dictionary<string, string>(),
                 ExpiresAt: DateTimeOffset.Now.Add(options.Value.Providers[options.Value.DefaultProviderCode].UploadUrlExpiresIn)
                 );

FileService.WebApi/Controllers/File/FileController.cs

@@ -1,6 +1,7 @@
 using FileService.Application.UploadFile;
 using FileService.Infrastructure;
 using IM.ASPNETCore;
+using IM.Commons;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
@@ -51,7 +52,8 @@ namespace FileService.WebApi.Controllers.File
         [HttpGet("{id}")]
         public async Task<IActionResult> Get(Guid id)
         {
-            var res = await service.GetFileInfoAsync(id);
+            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            var res = await service.GetFileInfoAsync(id, Guid.Parse(userId));
             return Ok(res);
         }
 
@@ -65,11 +67,15 @@ namespace FileService.WebApi.Controllers.File
             var res = await service.OpenDownloadAsync(id, Guid.Parse(userId));
             if (res.Data == null)
             {
+                if (res.Code == (int)ResultCode.PERMISSION_DENIED)
+                {
+                    return StatusCode(StatusCodes.Status403Forbidden, res);
+                }
                 return NotFound(res);
             }
 
             Response.Headers["Cache-Control"] = "private,max-age=86400";
-            return File(res.Data.Content, res.Data.ContentType);
+            return File(res.Data.Content, res.Data.ContentType, enableRangeProcessing: true);
         }
     }
 }

FileService.WebApi/Controllers/FileTask/CompleteTaskRequest.cs

@@ -5,8 +5,8 @@ namespace FileService.WebApi.Controllers.FileTask
 {
     public class CompleteTaskRequest
     {
-        public string SessionId { get; set; }
-        public List<UploadPart> Parts { get; set; }
+        public string SessionId { get; set; } = string.Empty;
+        public List<UploadPart> Parts { get; set; } = [];
     }
 
     public class CompleteTaskRequestValidator : AbstractValidator<CompleteTaskRequest>

FileService.WebApi/Controllers/FileTask/FileTaskController.cs

@@ -28,6 +28,8 @@ namespace FileService.WebApi.Controllers.FileTask
             var res = await service.InitTaskAsync(new UploadTaskInitCommand(
                     UploaderId: Guid.Parse(userId),
                     ConversationId: request.ConversationId,
+                    ChatType: request.ChatType,
+                    TargetId: request.TargetId,
                     FileName: request.FileName,
                     FileSize: request.FileSize,
                     contentType: request.ContentType,
@@ -44,6 +46,13 @@ namespace FileService.WebApi.Controllers.FileTask
             return Ok(res);
         }
 
+        [HttpGet("status")]
+        public async Task<IActionResult> Status(Guid taskId)
+        {
+            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            return Ok(await service.GetStatusAsync(taskId, Guid.Parse(userId)));
+        }
+
         [HttpGet("Getuploadurl")]
         public async Task<IActionResult> GetUploadUrl(string sessionId, int partNum)
         {
@@ -53,19 +62,20 @@ namespace FileService.WebApi.Controllers.FileTask
         }
 
         [HttpPost("complete")]
+        [UnitOfWork(typeof(FileDbContext))]
         public async Task<IActionResult> Complete([FromBody] CompleteTaskRequest request)
         {
             var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
             var res = await service.CompleteTaskAsync(new UploadTaskCompleteCommand(request.SessionId, Guid.Parse(userId), request.Parts));
-            return Ok(res);
+            return res.Succeeded ? Accepted(res) : Ok(res);
         }
 
         [HttpPost("local/parts/upload")]
         public async Task<IActionResult> LocalUpload(string sessionId, int partNumber, IFormFile file)
         {
-            //var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
             var stream = file.OpenReadStream();
-            var res = await service.UploadPartAsync(new UploadPartCommand(stream, sessionId, partNumber, file.Length));
+            var res = await service.UploadPartAsync(new UploadPartCommand(stream, sessionId, partNumber, file.Length), Guid.Parse(userId));
             return Ok(res);
         }
     }

FileService.WebApi/Controllers/FileTask/FileTaskInitRequest.cs

@@ -5,14 +5,30 @@ namespace FileService.WebApi.Controllers.FileTask
     public class FileTaskInitRequest
     {
         public Guid ConversationId { get; set; }
-        public string FileName { get; set; }
+        public string? ChatType { get; set; }
+        public Guid? TargetId { get; set; }
+        public string FileName { get; set; } = string.Empty;
         public long FileSize { get; set; }
-        public string ContentType { get; set; }
-        public string CheckSum { get; set; }
+        public string ContentType { get; set; } = string.Empty;
+        public string CheckSum { get; set; } = string.Empty;
 
     }
     public class FileTaskInitRequestValidator: AbstractValidator<FileTaskInitRequest>
     {
-
+        public FileTaskInitRequestValidator()
+        {
+            RuleFor(x => x.FileName).NotEmpty().MaximumLength(255);
+            RuleFor(x => x.FileSize).GreaterThan(0);
+            RuleFor(x => x.ContentType).NotEmpty().MaximumLength(255);
+            RuleFor(x => x.CheckSum).NotEmpty().MaximumLength(128);
+            RuleFor(x => x.ChatType)
+                .Must(value => string.IsNullOrWhiteSpace(value) ||
+                    value.Equals("PRIVATE", StringComparison.OrdinalIgnoreCase) ||
+                    value.Equals("GROUP", StringComparison.OrdinalIgnoreCase))
+                .WithMessage("chatType 必须为 PRIVATE 或 GROUP");
+            RuleFor(x => x.TargetId)
+                .NotEmpty()
+                .When(x => !string.IsNullOrWhiteSpace(x.ChatType));
+        }
     }
 }

FileService.WebApi/ModueInit.cs

@@ -9,6 +9,17 @@ namespace FileService.WebApi
         public void Initialize(IServiceCollection services)
         {
             services.AddScoped<UploadFileService>();
+            services.AddHttpClient<IGroupAccessService, GroupAccessService>((sp, client) =>
+            {
+                var configuration = sp.GetRequiredService<IConfiguration>();
+                client.BaseAddress = new Uri(configuration["InternalServices:GroupServiceBaseUrl"]
+                    ?? "http://im-group-service:8080/");
+                var internalApiKey = configuration["InternalApiKey"];
+                if (!string.IsNullOrWhiteSpace(internalApiKey))
+                {
+                    client.DefaultRequestHeaders.Add("X-Internal-Api-Key", internalApiKey);
+                }
+            });
         }
     }
 }

FileService.WebApi/appsettings.Development.json

@@ -1,4 +1,8 @@
 {
+  "InternalApiKey": "development-only-change-me",
+  "InternalServices": {
+    "GroupServiceBaseUrl": "http://localhost:5070/"
+  },
   "Logging": {
     "LogLevel": {
       "Default": "Information",

FileService.WebApi/appsettings.json

@@ -5,5 +5,9 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "InternalApiKey": "",
+  "InternalServices": {
+    "GroupServiceBaseUrl": "http://im-group-service:8080/"
+  }
 }

GroupService.Domain/Entities/GroupMember.cs

@@ -49,5 +49,12 @@ namespace GroupService.Domain.Entities
         {
             GroupNickName = nickname;
         }
+
+        public void Leave()
+        {
+            if (IsDeleted) return;
+            SoftDelete();
+            AddDomainEvent(new GroupMemberLeftDomainEvent(this));
+        }
     }
 }

GroupService.Domain/Events/GroupMemberLeftDomainEvent.cs

@@ -0,0 +1,7 @@
+using GroupService.Domain.Entities;
+using MediatR;
+
+namespace GroupService.Domain.Events
+{
+    public record GroupMemberLeftDomainEvent(GroupMember Member) : INotification;
+}

GroupService.Domain/IReposities/IGroupReposity.cs

@@ -22,6 +22,7 @@ namespace GroupService.Domain.IReposities
         /// <param name="userId"></param>
         /// <returns></returns>
         Task<IEnumerable<Group>> FindByMasterIdAsync(Guid userId);
+        Task<IEnumerable<Group>> FindByMemberIdAsync(Guid userId);
         /// <summary>
         /// 创建群聊
         /// </summary>

GroupService.Domain/IReposities/IGroupRequestReposity.cs

@@ -8,5 +8,6 @@ namespace GroupService.Domain.IReposities
         Task<GroupJoinRequest> FindByIdAsync(Guid id);
         Task<IEnumerable<GroupJoinRequest?>> FindByGroupIdAsync(Guid groupId);
         Task<IEnumerable<GroupJoinRequest>> FindByUserIdAsync(Guid userId);
+        Task<IEnumerable<GroupJoinRequest>> FindVisibleToUserAsync(Guid userId);
     }
 }

GroupService.Infrastructure/Configs/GroupJoinRequestConfig.cs

@@ -11,6 +11,9 @@ namespace GroupService.Infrastructure.Configs
             builder.ToTable("group_join_requests");
             builder.HasKey(x => x.Id);
             builder.HasKey(x => new { x.GroupId, x.UserId });
+            builder.HasIndex(x => x.Id).IsUnique();
+            builder.HasIndex(x => new { x.GroupId, x.State, x.CreationTime });
+            builder.HasIndex(x => new { x.UserId, x.CreationTime });
 
             builder.ComplexProperty(x => x.UserProfile, u =>
             {

GroupService.Infrastructure/Configs/GroupMemberConfig.cs

@@ -9,6 +9,8 @@ namespace GroupService.Infrastructure.Configs
         public void Configure(EntityTypeBuilder<GroupMember> builder)
         {
             builder.ToTable("group_members");
+            builder.HasIndex(x => new { x.UserId, x.IsDeleted, x.GroupId });
+            builder.HasIndex(x => new { x.GroupId, x.IsDeleted, x.Role });
         }
     }
 }

GroupService.Infrastructure/Migrations/20260909000200_ApiAlignmentFixes.cs

@@ -0,0 +1,48 @@
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace GroupService.Infrastructure.Migrations
+{
+    [DbContext(typeof(GroupDbContext))]
+    [Migration("20260909000200_ApiAlignmentFixes")]
+    public partial class ApiAlignmentFixes : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateIndex(
+                name: "IX_group_members_UserId_IsDeleted_GroupId",
+                table: "group_members",
+                columns: new[] { "UserId", "IsDeleted", "GroupId" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_group_members_GroupId_IsDeleted_Role",
+                table: "group_members",
+                columns: new[] { "GroupId", "IsDeleted", "Role" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_group_join_requests_Id",
+                table: "group_join_requests",
+                column: "Id",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_group_join_requests_GroupId_State_CreationTime",
+                table: "group_join_requests",
+                columns: new[] { "GroupId", "State", "CreationTime" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_group_join_requests_UserId_CreationTime",
+                table: "group_join_requests",
+                columns: new[] { "UserId", "CreationTime" });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex("IX_group_members_UserId_IsDeleted_GroupId", "group_members");
+            migrationBuilder.DropIndex("IX_group_members_GroupId_IsDeleted_Role", "group_members");
+            migrationBuilder.DropIndex("IX_group_join_requests_Id", "group_join_requests");
+            migrationBuilder.DropIndex("IX_group_join_requests_GroupId_State_CreationTime", "group_join_requests");
+            migrationBuilder.DropIndex("IX_group_join_requests_UserId_CreationTime", "group_join_requests");
+        }
+    }
+}

GroupService.Infrastructure/Migrations/GroupDbContextModelSnapshot.cs

@@ -227,6 +227,13 @@ namespace GroupService.Infrastructure.Migrations
 
                     b.HasKey("GroupId", "UserId");
 
+                    b.HasIndex("Id")
+                        .IsUnique();
+
+                    b.HasIndex("GroupId", "State", "CreationTime");
+
+                    b.HasIndex("UserId", "CreationTime");
+
                     b.ToTable("group_join_requests", (string)null);
                 });
 
@@ -266,6 +273,10 @@ namespace GroupService.Infrastructure.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("GroupId", "IsDeleted", "Role");
+
+                    b.HasIndex("UserId", "IsDeleted", "GroupId");
+
                     b.ToTable("group_members", (string)null);
                 });
 #pragma warning restore 612, 618

GroupService.Infrastructure/Reposities/GroupJoinRequestReposity.cs

@@ -36,5 +36,19 @@ namespace GroupService.Infrastructure.Reposities
                 x.UserId == userId || x.OperatorId == userId
             ).ToListAsync();
         }
+
+        public async Task<IEnumerable<GroupJoinRequest>> FindVisibleToUserAsync(Guid userId)
+        {
+            var managedGroupIds = db.GroupMembers
+                .Where(member => member.UserId == userId &&
+                    (member.Role == Domain.Enums.GroupMemberRole.Administrator ||
+                     member.Role == Domain.Enums.GroupMemberRole.Master))
+                .Select(member => member.GroupId);
+
+            return await db.GroupJoinRequests
+                .Where(request => request.UserId == userId || managedGroupIds.Contains(request.GroupId))
+                .OrderByDescending(request => request.CreationTime)
+                .ToListAsync();
+        }
     }
 }

GroupService.Infrastructure/Reposities/GroupReposity.cs

@@ -29,6 +29,18 @@ namespace GroupService.Infrastructure.Reposities
             return await db.Groups.Where(x => x.GroupMaster == userId).ToListAsync();
         }
 
+        public async Task<IEnumerable<Group>> FindByMemberIdAsync(Guid userId)
+        {
+            var groupIds = db.GroupMembers
+                .Where(member => member.UserId == userId)
+                .Select(member => member.GroupId);
+
+            return await db.Groups
+                .Where(group => groupIds.Contains(group.Id))
+                .OrderByDescending(group => group.ModificationTime ?? group.CreationTime)
+                .ToListAsync();
+        }
+
         public async Task<IEnumerable<Group>> FindByNameAsync(string name)
         {
             return await db.Groups.Where(x => x.Name == name).ToListAsync();

GroupService.WebApi/Application/EventHandler/GroupMemberLeftHandler.cs

@@ -0,0 +1,18 @@
+using GroupService.Domain.Events;
+using IM.Commons.IntegrationEvents;
+using MassTransit;
+using MediatR;
+
+namespace GroupService.WebApi.Application.EventHandler
+{
+    public class GroupMemberLeftHandler(IPublishEndpoint endpoint)
+        : INotificationHandler<GroupMemberLeftDomainEvent>
+    {
+        public Task Handle(GroupMemberLeftDomainEvent notification, CancellationToken cancellationToken)
+        {
+            return endpoint.Publish(
+                new GroupMemberLeftEvent(notification.Member.UserId, notification.Member.GroupId),
+                cancellationToken);
+        }
+    }
+}

GroupService.WebApi/Application/Group/GroupService.cs

@@ -27,11 +27,11 @@ namespace GroupService.WebApi.Application.Group
 
         public async Task<Result<List<GroupResponse>>> GetAllAsync(Guid userId)
         {
-            var groups = await reposity.FindByMasterIdAsync(userId);
+            var groups = await reposity.FindByMemberIdAsync(userId);
             return Result<List<GroupResponse>>.Success(mapper.Map<List<GroupResponse>>(groups));
         }
 
-        public async Task<Result<GroupResponse>> GetByIdAsync(Guid groupId)
+        public async Task<Result<GroupResponse>> GetByIdAsync(Guid groupId, Guid userId)
         {
             var group = await reposity.FindByIdAsync(groupId);
             if (group is null)
@@ -39,9 +39,36 @@ namespace GroupService.WebApi.Application.Group
                 return Result<GroupResponse>.Fail(ResultCode.GROUP_NOT_FOUND);
             }
 
+            if (!await memberReposity.CheckMemberExistAsync(groupId, userId))
+            {
+                return Result<GroupResponse>.Fail(ResultCode.PERMISSION_DENIED);
+            }
+
             return Result<GroupResponse>.Success(mapper.Map<GroupResponse>(group));
         }
 
+        public async Task<Result<object>> DissolveAsync(Guid groupId, Guid userId)
+        {
+            var group = await reposity.FindByIdAsync(groupId);
+            if (group is null)
+            {
+                return Result.Fail(ResultCode.GROUP_NOT_FOUND);
+            }
+
+            if (group.GroupMaster != userId)
+            {
+                return Result.Fail(ResultCode.PERMISSION_DENIED);
+            }
+
+            var members = await memberReposity.FindByGroupIdAsync(groupId);
+            foreach (var member in members)
+            {
+                member.Leave();
+            }
+            group.SoftDelete();
+            return Result.Success();
+        }
+
         public async Task<Result<GroupResponse>> UpdateAsync(GroupUpdateCommand command)
         {
             var group = await reposity.FindByIdAsync(command.GroupId);

GroupService.WebApi/Application/GroupMember/GroupMemberService.cs

@@ -24,13 +24,17 @@ namespace GroupService.WebApi.Application.GroupMember
             this.mapper = mapper;
         }
 
-        public async Task<Result<List<GroupMemberResponse>>> GetByGroupIdAsync(Guid groupId)
+        public async Task<Result<List<GroupMemberResponse>>> GetByGroupIdAsync(Guid groupId, Guid userId)
         {
             var group = await groupReposity.FindByIdAsync(groupId);
             if (group is null)
             {
                 return Result<List<GroupMemberResponse>>.Fail(ResultCode.GROUP_NOT_FOUND);
             }
+            if (!await reposity.CheckMemberExistAsync(groupId, userId))
+            {
+                return Result<List<GroupMemberResponse>>.Fail(ResultCode.PERMISSION_DENIED);
+            }
             var members = await reposity.FindByGroupIdAsync(groupId);
 
             return Result<List<GroupMemberResponse>>.Success(mapper.Map<List<GroupMemberResponse>>(members.ToList()));
@@ -78,14 +82,32 @@ namespace GroupService.WebApi.Application.GroupMember
             }
 
             var operatorMember = await reposity.FindOneByGroupIdAndUserIdAsync(member.GroupId, operatorId);
-            if (operatorMember is null || operatorMember.Role == Domain.Enums.GroupMemberRole.Normal)
+            if (operatorMember is null || operatorMember.Id == member.Id ||
+                member.Role == Domain.Enums.GroupMemberRole.Master ||
+                operatorMember.Role <= member.Role)
             {
                 return Result.Fail(ResultCode.PERMISSION_DENIED);
             }
 
-            member.SoftDelete();
+            member.Leave();
 
             return Result.Success();
         }
+
+        public async Task<Result<object>> LeaveAsync(Guid groupId, Guid userId)
+        {
+            var member = await reposity.FindOneByGroupIdAndUserIdAsync(groupId, userId);
+            if (member is null)
+            {
+                return Result.Fail(ResultCode.GROUP_MEMBER_NOT_FOUNT);
+            }
+            if (member.Role == Domain.Enums.GroupMemberRole.Master)
+            {
+                return Result.Fail<object>(ResultCode.PERMISSION_DENIED, "群主不能直接退群，请使用解散群接口");
+            }
+
+            member.Leave();
+            return Result.Success();
+        }
     }
 }

GroupService.WebApi/Application/GroupRequest/GroupRequestService.cs

@@ -98,7 +98,7 @@ namespace GroupService.WebApi.Application.GroupRequest
         }
         public async Task<Result<List<GroupRequestResponse>>> GetListAsync(Guid userId)
         {
-            var list = await reposity.FindByUserIdAsync(userId);
+            var list = await reposity.FindVisibleToUserAsync(userId);
             return Result.Success(mapper.Map<List<GroupRequestResponse>>(list.ToList()));
         }
 

GroupService.WebApi/Controllers/Group/GroupController.cs

@@ -32,7 +32,8 @@ namespace GroupService.WebApi.Controllers.Group
         [ProducesDefaultResponseType(typeof(Result<GroupResponse>))]
         public async Task<IActionResult> GetOne(Guid groupId)
         {
-            return Ok(await service.GetByIdAsync(groupId));
+            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            return Ok(await service.GetByIdAsync(groupId, Guid.Parse(userId)));
         }
 
         [HttpPost]
@@ -49,5 +50,13 @@ namespace GroupService.WebApi.Controllers.Group
             var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
             return Ok(await service.UpdateAsync(new GroupUpdateCommand(Guid.Parse(userId), request.GroupId, request.Avatar, request.GroupName, request.Description)));
         }
+
+        [HttpPost]
+        [UnitOfWork(typeof(GroupDbContext))]
+        public async Task<IActionResult> Dissolve([FromQuery] Guid groupId)
+        {
+            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            return Ok(await service.DissolveAsync(groupId, Guid.Parse(userId)));
+        }
     }
 }

GroupService.WebApi/Controllers/GroupMember/GroupMemberController.cs

@@ -1,6 +1,8 @@
 using GroupService.Infrastructure;
 using GroupService.WebApi.Application.GroupMember;
 using IM.ASPNETCore;
+using IM.Commons;
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using System.Security.Claims;
 
@@ -11,25 +13,36 @@ namespace GroupService.WebApi.Controllers.GroupMember
     public class GroupMemberController : ControllerBase
     {
         private readonly GroupMemberService service;
+        private readonly IConfiguration configuration;
 
-        public GroupMemberController(GroupMemberService service)
+        public GroupMemberController(GroupMemberService service, IConfiguration configuration)
         {
             this.service = service;
+            this.configuration = configuration;
         }
 
         [HttpGet]
         public async Task<IActionResult> CheckMember(Guid userId, Guid groupId)
         {
+            var expectedKey = configuration["InternalApiKey"];
+            var suppliedKey = Request.Headers["X-Internal-Api-Key"].ToString();
+            if (string.IsNullOrWhiteSpace(expectedKey) || suppliedKey != expectedKey)
+            {
+                return Unauthorized(Result.Fail(ResultCode.AUTH_FAILED));
+            }
             return Ok(await service.CheckMemberAsync(groupId, userId));
         }
 
         [HttpGet]
+        [Authorize]
         public async Task<IActionResult> List(Guid groupId)
         {
-            return Ok(await service.GetByGroupIdAsync(groupId));
+            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            return Ok(await service.GetByGroupIdAsync(groupId, Guid.Parse(userId)));
         }
 
         [HttpPost]
+        [Authorize]
         [UnitOfWork(typeof(GroupDbContext))]
         public async Task<IActionResult> Delete([FromQuery] Guid memberId)
         {
@@ -37,6 +50,15 @@ namespace GroupService.WebApi.Controllers.GroupMember
             return Ok(await service.DeleteAsync(memberId, Guid.Parse(userId)));
         }
 
+        [HttpPost]
+        [Authorize]
+        [UnitOfWork(typeof(GroupDbContext))]
+        public async Task<IActionResult> Leave([FromQuery] Guid groupId)
+        {
+            var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            return Ok(await service.LeaveAsync(groupId, Guid.Parse(userId)));
+        }
+
 
     }
 }

GroupService.WebApi/appsettings.Development.json

@@ -1,4 +1,5 @@
 {
+  "InternalApiKey": "development-only-change-me",
   "Logging": {
     "LogLevel": {
       "Default": "Information",

GroupService.WebApi/appsettings.json

@@ -5,5 +5,6 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "InternalApiKey": ""
 }

IM.ASPNETCore/ExceptionMiddleware.cs

@@ -1,15 +1,19 @@
 using IM.Commons;
 using IM.DomainCommons;
 using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
 
 namespace IM.ASPNETCore
 {
     public class ExceptionMiddleware
     {
         private readonly RequestDelegate _next;
-        public ExceptionMiddleware(RequestDelegate next)
+        private readonly ILogger<ExceptionMiddleware> logger;
+
+        public ExceptionMiddleware(RequestDelegate next, ILogger<ExceptionMiddleware> logger)
         {
             _next = next;
+            this.logger = logger;
         }
 
         public async Task InvokeAsync(HttpContext context)
@@ -22,12 +26,35 @@ namespace IM.ASPNETCore
             {
                 await DomainExceptionHandlerAsync(context, ex);
             }
+            catch (Exception ex)
+            {
+                await UnhandledExceptionHandlerAsync(context, ex);
+            }
         }
 
         public Task DomainExceptionHandlerAsync(HttpContext context, DomainException ex)
         {
             context.Response.ContentType = "application/json";
-            var result = Result<object>.Fail(ResultCode.PARAMETER_ERROR, ex.Message); // 包装成你的 Result
+            context.Response.StatusCode = StatusCodes.Status400BadRequest;
+            var result = Result<object>.Fail(ResultCode.PARAMETER_ERROR, ex.Message);
+            return context.Response.WriteAsJsonAsync(result);
+        }
+
+        private Task UnhandledExceptionHandlerAsync(HttpContext context, Exception ex)
+        {
+            var correlationId = context.TraceIdentifier;
+            logger.LogError(ex,
+                "Unhandled exception. CorrelationId: {CorrelationId}, Path: {Path}",
+                correlationId,
+                context.Request.Path);
+
+            context.Response.ContentType = "application/json";
+            context.Response.StatusCode = StatusCodes.Status500InternalServerError;
+            context.Response.Headers["X-Correlation-ID"] = correlationId;
+
+            var result = Result<object>.Fail(
+                ResultCode.SYSTEM_ERROR,
+                $"系统错误，关联编号：{correlationId}");
             return context.Response.WriteAsJsonAsync(result);
         }
     }

IM.Commons/IntegrationEvents/GroupMemberLeftEvent.cs

@@ -0,0 +1,4 @@
+namespace IM.Commons.IntegrationEvents
+{
+    public record GroupMemberLeftEvent(Guid UserId, Guid GroupId);
+}

IM.Commons/IntegrationEvents/UploadTaskCompleteEvent.cs

@@ -20,6 +20,8 @@ namespace IM.Commons.IntegrationEvents
         public string ContentType { get; set; }
         public string CheckSun { get; set; }
         public IReadOnlyList<UploadPart> Parts { get; set; }
+        public string? ChatType { get; set; }
+        public Guid? TargetId { get; set; }
     }
     public sealed record UploadPart(
         int PartNumber,

IM.InitCommon/RabbitMqExtension.cs

@@ -28,6 +28,10 @@ namespace IM.InitCommon
                         c.Password(options.Password);
                     });
 
+                    cfg.UseMessageRetry(retry => retry.Intervals(
+                        TimeSpan.FromMilliseconds(200),
+                        TimeSpan.FromSeconds(1),
+                        TimeSpan.FromSeconds(5)));
                     cfg.ConfigureEndpoints(context);
                 });
             });

IM.Jwt/WebApplicationJwtExtension.cs

@@ -61,7 +61,7 @@ namespace IM.Jwt
                             context.HandleResponse();
 
                             context.Response.ContentType = "application/json";
-                            context.Response.StatusCode = StatusCodes.Status200OK;
+                            context.Response.StatusCode = StatusCodes.Status401Unauthorized;
 
                             var result = Result<object>.Fail(ResultCode.AUTH_FAILED);
                             await context.Response.WriteAsJsonAsync(result);
@@ -71,7 +71,7 @@ namespace IM.Jwt
                         {
 
                             context.Response.ContentType = "application/json";
-                            context.Response.StatusCode = StatusCodes.Status200OK;
+                            context.Response.StatusCode = StatusCodes.Status403Forbidden;
                             var result = Result<object>.Fail(ResultCode.PERMISSION_DENIED);
                             await context.Response.WriteAsJsonAsync(result);
                         }

MIGRATION_RUNBOOK.md

@@ -0,0 +1,74 @@
+# API 对齐数据库迁移运行手册
+
+## 适用迁移
+
+- MessageService：`20260909000100_ApiAlignmentFixes`
+- GroupService：`20260909000200_ApiAlignmentFixes`
+- FileService：`20260909000300_AsyncUploadResult`
+
+## 发布前检查
+
+先完成三个库的可恢复备份，并在对应数据库执行：
+
+```sql
+-- GroupService：新增 Id 唯一索引前必须无重复。
+SELECT Id, COUNT(*) AS duplicate_count
+FROM group_join_requests
+GROUP BY Id
+HAVING COUNT(*) > 1;
+
+-- FileService：收紧 longtext 前检查历史最大长度。
+SELECT
+  MAX(CHAR_LENGTH(FileName)) AS max_file_name,
+  MAX(CHAR_LENGTH(ContentType)) AS max_content_type,
+  MAX(CHAR_LENGTH(checksum_algorithm)) AS max_checksum_algorithm,
+  MAX(CHAR_LENGTH(checksum_value)) AS max_checksum_value,
+  MAX(CHAR_LENGTH(storage_provider)) AS max_storage_provider,
+  MAX(CHAR_LENGTH(storage_bucket)) AS max_storage_bucket,
+  MAX(CHAR_LENGTH(storage_key)) AS max_storage_key,
+  MAX(CHAR_LENGTH(storage_region)) AS max_storage_region
+FROM upload_files;
+```
+
+上面的长度必须分别不超过 `255/255/16/128/64/255/1024/128`。对 `upload_tasks` 执行同样检查。超长值应先人工确认和修正，不要依赖数据库静默截断。
+
+## 执行迁移
+
+在仓库根目录设置目标数据库连接字符串后执行。不要把真实密码写入仓库或命令记录。
+
+```powershell
+$env:DefaultDB_ConnStr = '<MessageService MySQL connection string>'
+dotnet ef database update --project MessageService.Infrastructure --startup-project MessageService.WebApi --context MessageDbContext
+
+$env:DefaultDB_ConnStr = '<GroupService MySQL connection string>'
+dotnet ef database update --project GroupService.Infrastructure --startup-project GroupService.WebApi --context GroupDbContext
+
+$env:DefaultDB_ConnStr = '<FileService MySQL connection string>'
+dotnet ef database update --project FileService.Infrastructure --startup-project FileService.WebApi --context FileDbContext
+```
+
+建议顺序为 Message → Group → File，随后发布后端，再发布最终前端包。
+
+## 数据兼容说明
+
+- 所有新业务列均可空或有安全默认值，不删除历史记录。
+- 历史文件的 `IsPublic` 默认 `false`，无法确认作用域的旧文件因此只允许所有者读取。
+- 新上传文件会写入 `SourceTaskId/ChatType/TargetId/ResultFileId`；不要批量猜测旧文件作用域。
+- 群退出、群解散和会话隐藏使用软删除。
+
+## 回滚
+
+只有在已经回滚依赖新字段/接口的前后端版本后，才允许回滚数据库迁移：
+
+```powershell
+$env:DefaultDB_ConnStr = '<MessageService MySQL connection string>'
+dotnet ef database update 20260423115234_InitMessageDb --project MessageService.Infrastructure --startup-project MessageService.WebApi --context MessageDbContext
+
+$env:DefaultDB_ConnStr = '<GroupService MySQL connection string>'
+dotnet ef database update 20260429103435_removeGroupRequestOperatorProfile --project GroupService.Infrastructure --startup-project GroupService.WebApi --context GroupDbContext
+
+$env:DefaultDB_ConnStr = '<FileService MySQL connection string>'
+dotnet ef database update 20260509073447_InitFileDb --project FileService.Infrastructure --startup-project FileService.WebApi --context FileDbContext
+```
+
+FileService 回滚会删除新作用域和任务结果列，并把收紧的字符串列恢复为 `longtext`；回滚前应另行导出这些新列的数据。

MessageService.Domain/Entities/Conversation.cs

@@ -57,24 +57,22 @@ namespace MessageService.Domain.Entities
             AddDomainEvent(new ConversationCreatedDomainEvent(this));
         }
 
-        public void Update(long? LastReadSequenceId = default, int? unreadCount = default, string? lastMsg = default)
+        public void SetLastReadSequence(long sequenceId)
         {
-            if (LastReadSequenceId != null)
-            {
-                LastReadSequenceId = LastReadSequenceId.Value;
-                this.NotifyModified();
-            }
-            if (unreadCount != null)
-            {
-                UnreadCount += unreadCount.Value;
+            LastReadSequenceId = sequenceId;
             NotifyModified();
         }
 
-            if (lastMsg != null)
+        public void IncrementUnread()
         {
-                LastMessage = lastMsg;
+            UnreadCount += 1;
             NotifyModified();
         }
+
+        public void UpdateLastMessage(string lastMessage)
+        {
+            LastMessage = lastMessage;
+            NotifyModified();
         }
 
 
@@ -86,6 +84,7 @@ namespace MessageService.Domain.Entities
             UnreadCount = 0;
             if (lastReadSequenceId.HasValue)
                 LastReadSequenceId = lastReadSequenceId.Value;
+            NotifyModified();
         }
 
         public void UpdateProfile(string name, string avatar)

MessageService.Domain/Entities/Message.cs

@@ -91,10 +91,10 @@ namespace MessageService.Domain.Entities
         /// <param name="thumb">预览图</param>
         /// <param name="sequenceId"></param>
         /// <returns></returns>
-        public static Message BuildImg(MessageCreateContext ctx, string url,
-            int width, int height, string thumb, long sequenceId)
+        public static Message BuildImg(MessageCreateContext ctx, string? url,
+            int width, int height, string thumb, long sequenceId, Guid? fileId = null)
         {
-            var content = new MessageContent("[图片]", new ImageBody(url, width, height, thumb));
+            var content = new MessageContent("[图片]", new ImageBody(url, width, height, thumb, fileId));
             return new Message(ctx, sequenceId, MessageType.Image, content);
         }
         /// <summary>
@@ -107,10 +107,10 @@ namespace MessageService.Domain.Entities
         /// <param name="thumb"></param>
         /// <param name="sequenceId"></param>
         /// <returns></returns>
-        public static Message BuildVideo(MessageCreateContext ctx, string url,
-            int width, int height, string thumb, long sequenceId)
+        public static Message BuildVideo(MessageCreateContext ctx, string? url,
+            int width, int height, string thumb, long sequenceId, Guid? fileId = null)
         {
-            var content = new MessageContent("[视频]", new VideoBody(url, width, height, thumb));
+            var content = new MessageContent("[视频]", new VideoBody(url, width, height, thumb, fileId));
             return new Message(ctx, sequenceId, MessageType.Video, content);
         }
         /// <summary>
@@ -121,10 +121,10 @@ namespace MessageService.Domain.Entities
         /// <param name="duration">持续时间</param>
         /// <param name="sequenceId"></param>
         /// <returns></returns>
-        public static Message BuildVoice(MessageCreateContext ctx, string url,
-            int duration, long sequenceId)
+        public static Message BuildVoice(MessageCreateContext ctx, string? url,
+            int duration, long sequenceId, Guid? fileId = null)
         {
-            var content = new MessageContent("[音频]", new VoiceBody(url, duration));
+            var content = new MessageContent("[音频]", new VoiceBody(url, duration, fileId));
             return new Message(ctx, sequenceId, MessageType.Voice, content);
         }
         /// <summary>
@@ -137,11 +137,11 @@ namespace MessageService.Domain.Entities
         /// <param name="format">文件格式</param>
         /// <param name="sequenceId"></param>
         /// <returns></returns>
-        public static Message BuildFile(MessageCreateContext ctx, string url,
+        public static Message BuildFile(MessageCreateContext ctx, Guid fileId, string? url,
             string name, long size,
             string format, long sequenceId)
         {
-            var content = new MessageContent("[文件]", new FileBody(url, name, size, format));
+            var content = new MessageContent("[文件]", new FileBody(fileId, url, name, size, format));
             return new Message(ctx, sequenceId, MessageType.File, content);
         }
         /// <summary>

MessageService.Domain/KeyObjects/MsgTypeObj.cs

@@ -1,8 +1,8 @@
 namespace MessageService.Domain.KeyObjects
 {
     public record TextBody(string Text);
-    public record ImageBody(string Url, int Width, int Height, string Thumb);
-    public record VideoBody(string Url, int Width, int Height, string Thumb);
-    public record VoiceBody(string Url, int Duration);
-    public record FileBody(string Url, string FileName, long Size, string Format);
+    public record ImageBody(string? Url, int Width, int Height, string Thumb, Guid? FileId = null);
+    public record VideoBody(string? Url, int Width, int Height, string Thumb, Guid? FileId = null);
+    public record VoiceBody(string? Url, int Duration, Guid? FileId = null);
+    public record FileBody(Guid FileId, string? Url, string FileName, long Size, string Format);
 }

MessageService.Infrastructure/Configs/ConversationConfig.cs

@@ -11,6 +11,7 @@ namespace MessageService.Infrastructure.Configs
             builder.ToTable("conversations");
             builder.HasKey(x => x.Id);
             builder.HasIndex(x => x.UserId);
+            builder.HasIndex(x => new { x.UserId, x.ChatType, x.TargetId, x.IsDeleted });
 
         }
     }

MessageService.Infrastructure/Migrations/20260909000100_ApiAlignmentFixes.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace MessageService.Infrastructure.Migrations
+{
+    [DbContext(typeof(MessageDbContext))]
+    [Migration("20260909000100_ApiAlignmentFixes")]
+    public partial class ApiAlignmentFixes : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateIndex(
+                name: "IX_conversations_UserId_ChatType_TargetId_IsDeleted",
+                table: "conversations",
+                columns: new[] { "UserId", "ChatType", "TargetId", "IsDeleted" });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_conversations_UserId_ChatType_TargetId_IsDeleted",
+                table: "conversations");
+        }
+    }
+}

MessageService.Infrastructure/Migrations/MessageDbContextModelSnapshot.cs

@@ -76,6 +76,8 @@ namespace MessageService.Infrastructure.Migrations
 
                     b.HasIndex("UserId");
 
+                    b.HasIndex("UserId", "ChatType", "TargetId", "IsDeleted");
+
                     b.ToTable("conversations", (string)null);
                 });
 

MessageService.Infrastructure/Reposities/MessageReposity.cs

@@ -26,30 +26,32 @@ namespace MessageService.Infrastructure.Reposities
         public async Task<(IEnumerable<Message> messages, bool hasMore)> GetAsync(string streamKey, long? cusor, int direction, int limit)
         {
             var query = db.Messages.Where(x => x.StreamKey == streamKey);
-            List<Message> messages = [];
+            List<Message> fetched;
             if (direction == 0) // Before: 找比锚点小的，按倒序排
             {
                 if (cusor.HasValue)
                     query = query.Where(m => m.SequenceId < cusor.Value);
 
-                var list = await query
+                fetched = await query
                     .OrderByDescending(m => m.SequenceId) // 最新消息在最前
                     .Take(limit + 1)
                     .ToListAsync();
-
-                messages = [.. list.OrderBy(s => s.SequenceId)];
             }
             else
             {
                 if (cusor is null)
-                    return (messages, false);
+                    return (Array.Empty<Message>(), false);
 
-                messages = await query.OrderBy(o => o.SequenceId)
+                fetched = await query
+                    .Where(m => m.SequenceId > cusor.Value)
+                    .OrderBy(o => o.SequenceId)
                     .Take(limit + 1)
                     .ToListAsync();
             }
 
-            return (messages, messages.Count > limit);
+            var hasMore = fetched.Count > limit;
+            var messages = fetched.Take(limit).OrderBy(s => s.SequenceId).ToList();
+            return (messages, hasMore);
         }
     }
 }

MessageService.WebApi/Application/Conversation/ConversationMapperConfig.cs

@@ -8,7 +8,7 @@ namespace MessageService.WebApi.Application.Conversation
         public ConversationMapperConfig()
         {
             CreateMap<Domain.Entities.Conversation, ConversationResponse>()
-                .ForMember(dest => dest.DateTime, opt => opt.MapFrom(src => src.ModificationTime))
+                .ForMember(dest => dest.DateTime, opt => opt.MapFrom(src => src.ModificationTime ?? src.CreationTime))
                 ;
         }
     }

MessageService.WebApi/Application/Dtos/ConversationResponse.cs

@@ -31,6 +31,6 @@ namespace MessageService.WebApi.Application.Dtos
         /// 最后一条最新消息
         /// </summary>
         public string LastMessage { get; set; }
-        public DateTime DateTime { get; set; }
+        public DateTimeOffset DateTime { get; set; }
     }
 }

MessageService.WebApi/Application/EventHandlers/ConversationAddHandler.cs

@@ -6,7 +6,7 @@ using MessageService.Infrastructure;
 namespace MessageService.WebApi.Application.EventHandlers
 {
     public class ConversationAddHandler : IConsumer<GroupMemberJoinedEvent>,
-        IConsumer<FriendAddedEvent>
+        IConsumer<FriendAddedEvent>, IConsumer<GroupMemberLeftEvent>
     {
 
         private readonly IConversationReposity reposity;
@@ -21,6 +21,11 @@ namespace MessageService.WebApi.Application.EventHandlers
         public async Task Consume(ConsumeContext<GroupMemberJoinedEvent> context)
         {
             var @event = context.Message;
+            var existing = await reposity.FindByTargetIdAsync(@event.GroupId);
+            if (existing.Any(x => x.UserId == @event.UserId && x.ChatType == Domain.Enums.ChatType.GROUP))
+            {
+                return;
+            }
             reposity.Create(new Domain.Entities.Conversation(
                 userId: @event.UserId,
                 targetId: @event.GroupId,
@@ -32,12 +37,17 @@ namespace MessageService.WebApi.Application.EventHandlers
                 lastMessage: string.Empty
                 ));
 
-            await messageDb.SaveChangesAsync();
+            await messageDb.SaveChangesAsync(context.CancellationToken);
         }
 
         public async Task Consume(ConsumeContext<FriendAddedEvent> context)
         {
             var @event = context.Message;
+            var existing = await reposity.FindByUserIdAsync(@event.OwnerId);
+            if (existing.Any(x => x.TargetId == @event.TargetId && x.ChatType == Domain.Enums.ChatType.PRIVATE))
+            {
+                return;
+            }
             reposity.Create(new Domain.Entities.Conversation(
                 userId: @event.OwnerId,
                 targetId: @event.TargetId,
@@ -49,7 +59,18 @@ namespace MessageService.WebApi.Application.EventHandlers
                 lastMessage: string.Empty
                 ));
 
-            await messageDb.SaveChangesAsync();
+            await messageDb.SaveChangesAsync(context.CancellationToken);
+        }
+
+        public async Task Consume(ConsumeContext<GroupMemberLeftEvent> context)
+        {
+            var conversations = await reposity.FindByTargetIdAsync(context.Message.GroupId);
+            foreach (var conversation in conversations.Where(x =>
+                x.UserId == context.Message.UserId && x.ChatType == Domain.Enums.ChatType.GROUP))
+            {
+                conversation.SoftDelete();
+            }
+            await messageDb.SaveChangesAsync(context.CancellationToken);
         }
     }
 }

MessageService.WebApi/Application/EventHandlers/MessageHandler.cs

@@ -24,20 +24,24 @@ namespace MessageService.WebApi.Application.EventHandlers
         {
             var message = notification.Message;
 
-            if(message.ChatType == Domain.Enums.ChatType.PRIVATE)
+            var conversations = await reposity.FindByStreamKeyAsync(message.StreamKey);
+            foreach (var conversation in conversations)
             {
-                var list = await reposity.FindByStreamKeyAsync(message.StreamKey);
-                var owner = list.First(x => x.UserId == message.SenderId);
-                var target = list.First(x => x.UserId == message.TargetId);
-
-                owner.Update(message.SequenceId, 0, message.Content.Fallback);
-                target.Update(target.LastReadSequenceId, target.UnreadCount + 1, message.Content.Fallback);
-
-                messageDb.Conversations.UpdateRange(owner,target);
-                await messageDb.SaveChangesAsync(cancellationToken);
+                conversation.UpdateLastMessage(message.Content.Fallback);
+                if (conversation.UserId == message.SenderId)
+                {
+                    conversation.SetLastReadSequence(message.SequenceId);
+                }
+                else
+                {
+                    conversation.IncrementUnread();
+                }
             }
 
-            await endpoint.Publish(message.ToIntegrationEvent());
+            messageDb.Conversations.UpdateRange(conversations);
+            await messageDb.SaveChangesAsync(cancellationToken);
+
+            await endpoint.Publish(message.ToIntegrationEvent(), cancellationToken);
         }
 
         public async Task Handle(MessageWithdrawDomainEvent notification, CancellationToken cancellationToken)

MessageService.WebApi/Application/Message/MessageService.cs

@@ -52,13 +52,16 @@ namespace MessageService.WebApi.Application.Message
             {
                 MessageType.Text => Domain.Entities.Message.BuildTxt(ctx, command.Text!, sequenceId),
 
-                MessageType.Image => Domain.Entities.Message.BuildImg(ctx, command.Url!,
-                    command.Width ?? 0, command.Height ?? 0, command.Thumb!, sequenceId),
+                MessageType.Image => Domain.Entities.Message.BuildImg(ctx, command.Url,
+                    command.Width ?? 0, command.Height ?? 0, command.Thumb!, sequenceId, command.FileId),
 
-                MessageType.Video => Domain.Entities.Message.BuildVideo(ctx, command.Url!,
-                    command.Width ?? 0, command.Height ?? 0, command.Thumb!, sequenceId),
+                MessageType.Video => Domain.Entities.Message.BuildVideo(ctx, command.Url,
+                    command.Width ?? 0, command.Height ?? 0, command.Thumb!, sequenceId, command.FileId),
 
-                MessageType.Voice => Domain.Entities.Message.BuildVoice(ctx, command.Url!, command.Duration ?? 0, sequenceId),
+                MessageType.Voice => Domain.Entities.Message.BuildVoice(ctx, command.Url, command.Duration ?? 0, sequenceId, command.FileId),
+
+                MessageType.File => Domain.Entities.Message.BuildFile(ctx, command.FileId!.Value, command.Url,
+                    command.FileName!, command.FileSize!.Value, command.FileFormat!, sequenceId),
 
                 _ => null
             };
@@ -109,6 +112,11 @@ namespace MessageService.WebApi.Application.Message
 
         public async Task<Result<GetMessagesResponse>> GetMessagesAsync(GetMessageCommand command)
         {
+            if (command.direction is not 0 and not 1 || command.limit is < 1 or > 100)
+            {
+                return Result.Fail<GetMessagesResponse>(ResultCode.PARAMETER_ERROR);
+            }
+
             var conversation = await conversationReposity.FindByIdAsync(command.conversationId);
 
             if(conversation is null || conversation.UserId != command.userId)

MessageService.WebApi/Application/Message/SendMsgCommand.cs

@@ -22,8 +22,12 @@ namespace MessageService.WebApi.Application.Message
         public int? Height { get; init; }
         public string? Thumb { get; init; }
         public int? Duration { get; init; }
+        public Guid? FileId { get; init; }
+        public string? FileName { get; init; }
+        public long? FileSize { get; init; }
+        public string? FileFormat { get; init; }
 
-        public SendMsgCommand(Guid senderId, Guid targetId, ChatType chatType, MessageType msgType, Guid clientMsgId, Guid? quoteMessageId, Dictionary<string, string>? ext, string? text, string? url, int? width, int? height, string? thumb, int? duration)
+        public SendMsgCommand(Guid senderId, Guid targetId, ChatType chatType, MessageType msgType, Guid clientMsgId, Guid? quoteMessageId, Dictionary<string, string>? ext, string? text, string? url, int? width, int? height, string? thumb, int? duration, Guid? fileId, string? fileName, long? fileSize, string? fileFormat)
         {
             SenderId = senderId;
             TargetId = targetId;
@@ -38,6 +42,10 @@ namespace MessageService.WebApi.Application.Message
             Height = height;
             Thumb = thumb;
             Duration = duration;
+            FileId = fileId;
+            FileName = fileName;
+            FileSize = fileSize;
+            FileFormat = fileFormat;
         }
     }
 }

MessageService.WebApi/Controllers/Message/MessageSendRequest.cs

@@ -23,6 +23,10 @@ namespace MessageService.WebApi.Controllers.Message
         public int? Height { get; init; }
         public string? Thumb { get; init; }
         public int? Duration { get; init; }
+        public Guid? FileId { get; init; }
+        public string? FileName { get; init; }
+        public long? FileSize { get; init; }
+        public string? FileFormat { get; init; }
 
         public SendMsgCommand ToCommand(Guid senderId)
         {
@@ -39,7 +43,11 @@ namespace MessageService.WebApi.Controllers.Message
                 Width,
                 Height,
                 Thumb,
-                Duration
+                Duration,
+                FileId,
+                FileName,
+                FileSize,
+                FileFormat
                 );
         }
     }
@@ -63,9 +71,19 @@ namespace MessageService.WebApi.Controllers.Message
 
             // 图片/视频/语音消息：url 必填
             When(r => r.MsgType == MessageType.Image || r.MsgType == MessageType.Video
-                   || r.MsgType == MessageType.Voice || r.MsgType == MessageType.File, () =>
+                   || r.MsgType == MessageType.Voice, () =>
             {
-                RuleFor(r => r.Url).NotEmpty().WithMessage("媒体消息的 url 字段不能为空");
+                RuleFor(r => r)
+                    .Must(request => !string.IsNullOrWhiteSpace(request.Url) || request.FileId.HasValue)
+                    .WithMessage("媒体消息必须提供 url 或 fileId");
+            });
+
+            When(r => r.MsgType == MessageType.File, () =>
+            {
+                RuleFor(r => r.FileId).NotNull().NotEmpty().WithMessage("文件消息的 fileId 字段不能为空");
+                RuleFor(r => r.FileName).NotEmpty().WithMessage("文件消息的 fileName 字段不能为空");
+                RuleFor(r => r.FileSize).NotNull().GreaterThanOrEqualTo(0).WithMessage("文件消息的 fileSize 字段不合法");
+                RuleFor(r => r.FileFormat).NotEmpty().WithMessage("文件消息的 fileFormat 字段不能为空");
             });
         }
     }

MessageService.WebApi/ModuleInit.cs

@@ -20,9 +20,16 @@ namespace MessageService.WebApi
             services.AddScoped<ConversationService>();
             services.AddScoped<SquenceService>();
             services.AddScoped<IContactIntegrationService, ContactIntegrationService>();
-            services.AddHttpClient<IGroupMemberIntegrationService, GroupMemberIntegrationService>(c =>
+            services.AddHttpClient<IGroupMemberIntegrationService, GroupMemberIntegrationService>((sp, c) =>
             {
-                c.BaseAddress = new Uri("http://im-group-service:8080/");
+                var configuration = sp.GetRequiredService<IConfiguration>();
+                c.BaseAddress = new Uri(configuration["InternalServices:GroupServiceBaseUrl"]
+                    ?? "http://im-group-service:8080/");
+                var internalApiKey = configuration["InternalApiKey"];
+                if (!string.IsNullOrWhiteSpace(internalApiKey))
+                {
+                    c.DefaultRequestHeaders.Add("X-Internal-Api-Key", internalApiKey);
+                }
             });
             services.AddGrpcClient<ContactInternal.ContactInternalClient>((sp, o) =>
             {

MessageService.WebApi/appsettings.Development.json

@@ -1,4 +1,8 @@
 {
+  "InternalApiKey": "development-only-change-me",
+  "InternalServices": {
+    "GroupServiceBaseUrl": "http://localhost:5070/"
+  },
   "Logging": {
     "LogLevel": {
       "Default": "Information",

MessageService.WebApi/appsettings.json

@@ -5,5 +5,9 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "InternalApiKey": "",
+  "InternalServices": {
+    "GroupServiceBaseUrl": "http://im-group-service:8080/"
+  }
 }

docker-compose.yml

@@ -145,6 +145,7 @@ services:
       ASPNETCORE_ENVIRONMENT: Production
       ASPNETCORE_URLS: http://+:8080
       CONSUL_URL: http://consul:8500
+      InternalApiKey: ${IM_INTERNAL_API_KEY:?IM_INTERNAL_API_KEY is required}
     networks:
       - im-net
 
@@ -173,6 +174,7 @@ services:
       ASPNETCORE_ENVIRONMENT: Production
       ASPNETCORE_URLS: http://+:8080
       CONSUL_URL: http://consul:8500
+      InternalApiKey: ${IM_INTERNAL_API_KEY:?IM_INTERNAL_API_KEY is required}
     networks:
       - im-net
 
@@ -189,12 +191,15 @@ services:
         condition: service_started
       rabbitmq:
         condition: service_started
+      group-service:
+        condition: service_started
     ports:
       - "5005:8080"
     environment:
       ASPNETCORE_ENVIRONMENT: Production
       ASPNETCORE_URLS: http://+:8080
       CONSUL_URL: http://consul:8500
+      InternalApiKey: ${IM_INTERNAL_API_KEY:?IM_INTERNAL_API_KEY is required}
     networks:
       - im-net