✨ Message attachments expires at

DysonNetwork.Sphere/Chat/ChatController.cs

@@ -5,13 +5,14 @@ using DysonNetwork.Sphere.Storage;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using NodaTime;
 using SystemClock = NodaTime.SystemClock;
 
 namespace DysonNetwork.Sphere.Chat;
 
 [ApiController]
 [Route("/chat")]
-public partial class ChatController(AppDatabase db, ChatService cs) : ControllerBase
+public partial class ChatController(AppDatabase db, ChatService cs, FileService fs) : ControllerBase
 {
     public class MarkMessageReadRequest
     {
@@ -63,7 +64,8 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
     }
 
     [HttpGet("{roomId:guid}/messages")]
-    public async Task<ActionResult<List<Message>>> ListMessages(Guid roomId, [FromQuery] int offset, [FromQuery] int take = 20)
+    public async Task<ActionResult<List<Message>>> ListMessages(Guid roomId, [FromQuery] int offset,
+        [FromQuery] int take = 20)
     {
         var currentUser = HttpContext.Items["CurrentUser"] as Account.Account;
 
@@ -133,7 +135,6 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
     }
 
 
-
     [GeneratedRegex("@([A-Za-z0-9_-]+)")]
     private static partial Regex MentionRegex();
 
@@ -143,7 +144,8 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
     public async Task<ActionResult> SendMessage([FromBody] SendMessageRequest request, Guid roomId)
     {
         if (HttpContext.Items["CurrentUser"] is not Account.Account currentUser) return Unauthorized();
-        if (string.IsNullOrWhiteSpace(request.Content) && (request.AttachmentsId == null || request.AttachmentsId.Count == 0))
+        if (string.IsNullOrWhiteSpace(request.Content) &&
+            (request.AttachmentsId == null || request.AttachmentsId.Count == 0))
             return BadRequest("You cannot send an empty message.");
 
         var member = await db.ChatMembers
@@ -153,7 +155,8 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
             .Include(m => m.Account)
             .Include(m => m.Account.Profile)
             .FirstOrDefaultAsync();
-        if (member == null || member.Role < ChatMemberRole.Member) return StatusCode(403, "You need to be a normal member to send messages here.");
+        if (member == null || member.Role < ChatMemberRole.Member)
+            return StatusCode(403, "You need to be a normal member to send messages here.");
 
         var message = new Message
         {
@@ -217,7 +220,6 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
     }
 
 
-
     [HttpPatch("{roomId:guid}/messages/{messageId:guid}")]
     [Authorize]
     public async Task<ActionResult> UpdateMessage([FromBody] SendMessageRequest request, Guid roomId, Guid messageId)
@@ -227,7 +229,7 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
         var message = await db.ChatMessages
             .Include(m => m.Sender)
             .Include(m => m.Sender.Account)
-            .Include(m => m.Sender.Account.Profile)
+            .Include(m => m.Sender.Account.Profile).Include(message => message.Attachments)
             .FirstOrDefaultAsync(m => m.Id == messageId && m.ChatRoomId == roomId);
         if (message == null) return NotFound();
 
@@ -261,23 +263,8 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
 
         if (request.AttachmentsId is not null)
         {
-            var records = await db.Files.Where(f => request.AttachmentsId.Contains(f.Id)).ToListAsync();
+            message.Attachments = (await fs.DiffAndMarkFilesAsync(request.AttachmentsId, message.Attachments)).current;
-            
+            await fs.DiffAndSetExpiresAsync(request.AttachmentsId, Duration.FromDays(30), message.Attachments);
-            var previous = message.Attachments?.ToDictionary(f => f.Id) ?? new Dictionary<string, CloudFile>();
-            var current = records.ToDictionary(f => f.Id);
-            
-            // Detect added files
-            var added = current.Keys.Except(previous.Keys).Select(id => current[id]).ToList();
-            // Detect removed files
-            var removed = previous.Keys.Except(current.Keys).Select(id => previous[id]).ToList();
-            
-            // Update attachments
-            message.Attachments = request.AttachmentsId.Select(id => current[id]).ToList();
-            
-            // Call mark usage
-            var fs = HttpContext.RequestServices.GetRequiredService<Storage.FileService>();
-            await fs.MarkUsageRangeAsync(added, 1);
-            await fs.MarkUsageRangeAsync(removed, -1);
         }
 
         message.EditedAt = SystemClock.Instance.GetCurrentInstant();
@@ -309,8 +296,7 @@ public partial class ChatController(AppDatabase db, ChatService cs) : Controller
 
     public class SyncRequest
     {
-        [Required]
+        [Required] public long LastSyncTimestamp { get; set; }
-        public long LastSyncTimestamp { get; set; }
     }
 
     [HttpPost("{roomId:guid}/sync")]

DysonNetwork.Sphere/Chat/ChatService.cs

@@ -18,7 +18,11 @@ public class ChatService(AppDatabase db, FileService fs, IServiceScopeFactory sc
         await db.SaveChangesAsync();
 
         var files = message.Attachments.Distinct().ToList();
-        if (files.Count != 0) await fs.MarkUsageRangeAsync(files, 1);
+        if (files.Count != 0)
+        {
+            await fs.MarkUsageRangeAsync(files, 1);
+            await fs.SetExpiresRangeAsync(files, Duration.FromDays(30));
+        }
 
         // Then start the delivery process
         // Using ConfigureAwait(false) is correct here since we don't need context to flow

DysonNetwork.Sphere/Post/PostService.cs

@@ -111,22 +111,7 @@ public class PostService(AppDatabase db, FileService fs, ActivityService act)
 
         if (attachments is not null)
         {
-            var records = await db.Files.Where(e => attachments.Contains(e.Id)).ToListAsync();
+            post.Attachments = (await fs.DiffAndMarkFilesAsync(attachments, post.Attachments)).current;
-
-            var previous = post.Attachments.ToDictionary(f => f.Id);
-            var current = records.ToDictionary(f => f.Id);
-
-            // Detect added files
-            var added = current.Keys.Except(previous.Keys).Select(id => current[id]).ToList();
-            // Detect removed files
-            var removed = previous.Keys.Except(current.Keys).Select(id => previous[id]).ToList();
-
-            // Update attachments
-            post.Attachments = attachments.Select(id => current[id]).ToList();
-
-            // Call mark usage
-            await fs.MarkUsageRangeAsync(added, 1);
-            await fs.MarkUsageRangeAsync(removed, -1);
         }
 
         if (tags is not null)

DysonNetwork.Sphere/Storage/FileService.cs

@@ -399,6 +399,64 @@ public class FileService(
                 )
             );
     }
+    
+    
+
+    public async Task SetExpiresRangeAsync(ICollection<CloudFile> files, Duration? duration)
+    {
+        var ids = files.Select(f => f.Id).ToArray();
+        await db.Files.Where(o => ids.Contains(o.Id))
+            .ExecuteUpdateAsync(setter => setter.SetProperty(
+                    b => b.ExpiredAt,
+                    duration.HasValue 
+                        ? b => SystemClock.Instance.GetCurrentInstant() + duration.Value
+                        : _ => null
+                )
+            );
+    }
+    
+    public async Task<(ICollection<CloudFile> current, ICollection<CloudFile> added, ICollection<CloudFile> removed)> DiffAndMarkFilesAsync(
+        ICollection<string>? newFileIds,
+        ICollection<CloudFile>? previousFiles = null
+    )
+    {
+        if (newFileIds == null) return ([], [], previousFiles ?? []);
+        
+        var records = await db.Files.Where(f => newFileIds.Contains(f.Id)).ToListAsync();
+        var previous = previousFiles?.ToDictionary(f => f.Id) ?? new Dictionary<string, CloudFile>();
+        var current = records.ToDictionary(f => f.Id);
+    
+        var added = current.Keys.Except(previous.Keys).Select(id => current[id]).ToList();
+        var removed = previous.Keys.Except(current.Keys).Select(id => previous[id]).ToList();
+    
+        if (added.Count > 0) await MarkUsageRangeAsync(added, 1);
+        if (removed.Count > 0) await MarkUsageRangeAsync(removed, -1);
+    
+        return (newFileIds.Select(id => current[id]).ToList(), added, removed);
+    }
+    
+    public async Task<(ICollection<CloudFile> current, ICollection<CloudFile> added, ICollection<CloudFile> removed)> DiffAndSetExpiresAsync(
+        ICollection<string>? newFileIds,
+        Duration? duration,
+        ICollection<CloudFile>? previousFiles = null
+    )
+    {
+        if (newFileIds == null) return ([], [], previousFiles ?? []);
+        
+        var records = await db.Files.Where(f => newFileIds.Contains(f.Id)).ToListAsync();
+        var previous = previousFiles?.ToDictionary(f => f.Id) ?? new Dictionary<string, CloudFile>();
+        var current = records.ToDictionary(f => f.Id);
+    
+        var added = current.Keys.Except(previous.Keys).Select(id => current[id]).ToList();
+        var removed = previous.Keys.Except(current.Keys).Select(id => previous[id]).ToList();
+    
+        if (added.Count > 0) await SetExpiresRangeAsync(added, duration);
+        if (removed.Count > 0) await SetExpiresRangeAsync(removed, null);
+    
+        return (newFileIds.Select(id => current[id]).ToList(), added, removed);
+    }
+    
+    
 }
 
 public class CloudFileUnusedRecyclingJob(AppDatabase db, FileService fs, ILogger<CloudFileUnusedRecyclingJob> logger)