add:

更新

backend/IM_API/Controllers/MessageController.cs

@@ -3,6 +3,8 @@ using IM_API.Domain.Events;
 using IM_API.Dtos;
 using IM_API.Dtos.Message;
 using IM_API.Interface.Services;
+using IM_API.Models;
+using IM_API.Tools;
 using IM_API.VOs.Message;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
@@ -19,12 +21,12 @@ namespace IM_API.Controllers
     {
         private readonly IMessageSevice _messageService;
         private readonly ILogger<MessageController> _logger;
-        private readonly IEventBus _eventBus;
-        public MessageController(IMessageSevice messageService, ILogger<MessageController> logger, IEventBus eventBus)
+        public MessageController(IMessageSevice messageService, 
+            ILogger<MessageController> logger)
         {
             _messageService = messageService;
             _logger = logger;
-            _eventBus = eventBus;
+
         }
         [HttpPost]
         [ProducesResponseType(typeof(BaseResponse<MessageBaseVo>), StatusCodes.Status200OK)]
@@ -32,15 +34,23 @@ namespace IM_API.Controllers
         {
             var userIdstr = User.FindFirstValue(ClaimTypes.NameIdentifier);
             MessageBaseVo messageBaseVo = new MessageBaseVo();
+            var handledMessage = await _messageService.HandleFileMessageContentAsync(dto);
             if(dto.ChatType == Models.ChatType.PRIVATE)
             {
-                messageBaseVo = await _messageService.SendPrivateMessageAsync(int.Parse(userIdstr), dto.ReceiverId, dto);
+                messageBaseVo = await _messageService.SendPrivateMessageAsync(int.Parse(userIdstr), dto.ReceiverId, handledMessage);
             }
             else
             {
-                messageBaseVo = await _messageService.SendGroupMessageAsync(int.Parse(userIdstr), dto.ReceiverId, dto);
+                messageBaseVo = await _messageService.SendGroupMessageAsync(int.Parse(userIdstr), dto.ReceiverId, handledMessage);
             }
-                return Ok(new BaseResponse<MessageBaseVo>(messageBaseVo));
+
+            if (messageBaseVo.Type != MessageMsgType.Text)
+            {
+                var request = HttpContext?.Request;
+                var baseUrl = $"{request.Scheme}://{request.Host}";
+                messageBaseVo.Content = UrlTools.ProcessMessageUrl(messageBaseVo.Content, baseUrl);
+            }
+            return Ok(new BaseResponse<MessageBaseVo>(messageBaseVo));
         }
         [HttpGet]
         [ProducesResponseType(typeof(BaseResponse<List<MessageBaseVo>>), StatusCodes.Status200OK)]

backend/IM_API/Controllers/UploadController.cs

@@ -0,0 +1,124 @@
+using IM_API.Dtos;
+using IM_API.Interface.Services;
+using IM_API.Models.Upload;
+using IM_API.Tools;
+using IM_API.VOs;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore.Storage;
+using StackExchange.Redis;
+using System.Text;
+using System.Text.Json;
+using IDatabase = StackExchange.Redis.IDatabase;
+
+namespace IM_API.Controllers
+{
+    [Authorize]
+    [Route("api/[controller]")]
+    [ApiController]
+    public class UploadController : ControllerBase
+    {
+        private readonly IWebHostEnvironment _env;
+        private readonly IStorageService _storage;
+        private readonly IDatabase _redis;
+        public UploadController(IWebHostEnvironment env, IStorageService storage, IConnectionMultiplexer connectionMultiplexer)
+        {
+            _env = env;
+            _storage = storage;
+            _redis = connectionMultiplexer.GetDatabase();
+        }
+        [HttpPost("local/{taskId}/parts/{partNumber}")]
+        [ProducesResponseType(typeof(BaseResponse<object?>), StatusCodes.Status200OK)]
+        public async Task<IActionResult> LocalUpload(Guid taskId, int partNumber, IFormFile file)
+        {
+            var baseDir = Path.Combine(_env.ContentRootPath, "uploads"); // 项目根目录下 uploads
+            Directory.CreateDirectory(baseDir);
+
+            var path = Path.Combine(baseDir, "temp", taskId.ToString(), $"{partNumber}.part.tmp");
+            Directory.CreateDirectory(Path.GetDirectoryName(path)!);
+
+            using var stream = System.IO.File.Create(path);
+            await file.CopyToAsync(stream);
+
+            await _redis.SetAddAsync(RedisKeys.GetUploadPartKey(taskId), partNumber);
+
+            return Ok(new BaseResponse<object?>());
+        }
+
+        [HttpPost("CreateTask")]
+        [ProducesResponseType(typeof(BaseResponse<CreateUploadTaskVo>), StatusCodes.Status200OK)]
+        public async Task<IActionResult> CreateUpload(CreateUploadTaskDto dto)
+        {
+            var vo = await _storage.InitTaskAsync(dto);
+            return Ok(new BaseResponse<CreateUploadTaskVo>(vo));
+        }
+
+        [HttpPost("CreatePart")]
+        public async Task<IActionResult> CreatePart(Guid taskId, int partNum)
+        {
+            var vo = await _storage.CreatePartInstructionAsync(taskId, partNum);
+            return Ok(new BaseResponse<UploadPartInstructionVo>(vo));
+        }
+
+        [HttpPost("CompleteTask")]
+        public async Task<IActionResult> CompleteTask([FromQuery]Guid taskId, [FromBody]List<UploadPartDto> dtos)
+        {
+            var taskIdRes = await _storage.CompleteAsync(taskId, dtos);
+            return Ok(new BaseResponse<string>(data: taskIdRes.ToString()));
+        }
+
+        [HttpGet("events/{taskId}")]
+        [AllowAnonymous]
+        public async Task Events(Guid taskId)
+        {
+            Response.Headers.Add("Content-Type", "text/event-stream");
+            Response.Headers.Add("Cache-Control", "no-cache");
+            Response.Headers.Add("Connection", "keep-alive");
+            var lastProgress = -1;
+
+            while (!HttpContext.RequestAborted.IsCancellationRequested)
+            {
+                var hash = await _redis.HashGetAllAsync(RedisKeys.MergeStatus(taskId));
+                if (hash.Length == 0)
+                {
+                    await Task.Delay(1000);
+                    continue;
+                }
+                var status = hash.FirstOrDefault(x => x.Name == "status").Value;
+                var progress = hash.FirstOrDefault(x => x.Name == "progress").Value;
+                var url = hash.FirstOrDefault(x => x.Name == "url").Value;
+
+                // 避免重复发送
+                if (progress != lastProgress)
+                {
+                    var data = new
+                    {
+                        status = status.ToString(),
+                        progress = progress.ToString(),
+                        url = (string)url
+                    };
+
+                    await Response.WriteAsync($"data: {JsonSerializer.Serialize(data)}\n\n");
+                    await Response.Body.FlushAsync();
+
+                    // 完成后关闭 SSE
+                    if (status == "Completed")
+                        break;
+
+                    await Task.Delay(1000); // 每秒检查一次
+                }
+            }
+        }
+
+        [HttpPost("upload/{hash}")]
+        public async Task<IActionResult> UploadSmallFile(IFormFile file,string hash)
+        {
+            using var stream = file.OpenReadStream();
+            var res = await _storage.UploadSmallFileAsync(stream, file.FileName, file.ContentType, file.Length, hash);
+            return Ok(new BaseResponse<UploadTask>(res));
+        }
+
+
+    }
+}