✨ Stickers & packs api

DysonNetwork.Sphere/AppDatabase.cs

@@ -60,6 +60,9 @@ public class AppDatabase(
     public DbSet<Chat.MessageStatus> ChatStatuses { get; set; }
     public DbSet<Chat.MessageReaction> ChatReactions { get; set; }
     
+    public DbSet<Sticker.Sticker> Stickers { get; set; }
+    public DbSet<Sticker.StickerPack> StickerPacks { get; set; }
+
     protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
     {
         var dataSourceBuilder = new NpgsqlDataSourceBuilder(configuration.GetConnectionString("App"));
@@ -81,18 +84,22 @@ public class AppDatabase(
                 context.Set<PermissionGroup>().Add(new PermissionGroup
                 {
                     Key = "default",
-                    Nodes =
+                    Nodes = new List<string>
                     {
-                        PermissionService.NewPermissionNode("group:default", "global", "posts.create", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "posts.react", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "publishers.create", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "files.create", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "chat.create", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "chat.messages.create", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "chat.realtime.create", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "accounts.statuses.create", true),
-                        PermissionService.NewPermissionNode("group:default", "global", "accounts.statuses.update", true)
-                    }
+                        "posts.create",
+                        "posts.react", 
+                        "publishers.create",
+                        "files.create",
+                        "chat.create",
+                        "chat.messages.create",
+                        "chat.realtime.create",
+                        "accounts.statuses.create",
+                        "accounts.statuses.update",
+                        "stickers.pack.create",
+                        "stickers.create"
+                    }.Select(permission => 
+                        PermissionService.NewPermissionNode("group:default", "global", permission, true))
+                        .ToList()
                 });
                 await context.SaveChangesAsync(cancellationToken);
             }

DysonNetwork.Sphere/Migrations/20250510124730_AddStickerAndPacks.cs

@@ -0,0 +1,94 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using NodaTime;
+
+#nullable disable
+
+namespace DysonNetwork.Sphere.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddStickerAndPacks : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "sticker_packs",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "uuid", nullable: false),
+                    name = table.Column<string>(type: "character varying(1024)", maxLength: 1024, nullable: false),
+                    description = table.Column<string>(type: "character varying(4096)", maxLength: 4096, nullable: false),
+                    prefix = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: false),
+                    publisher_id = table.Column<long>(type: "bigint", nullable: false),
+                    created_at = table.Column<Instant>(type: "timestamp with time zone", nullable: false),
+                    updated_at = table.Column<Instant>(type: "timestamp with time zone", nullable: false),
+                    deleted_at = table.Column<Instant>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_sticker_packs", x => x.id);
+                    table.ForeignKey(
+                        name: "fk_sticker_packs_publishers_publisher_id",
+                        column: x => x.publisher_id,
+                        principalTable: "publishers",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "stickers",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "uuid", nullable: false),
+                    slug = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: false),
+                    image_id = table.Column<string>(type: "character varying(128)", nullable: false),
+                    pack_id = table.Column<Guid>(type: "uuid", nullable: false),
+                    created_at = table.Column<Instant>(type: "timestamp with time zone", nullable: false),
+                    updated_at = table.Column<Instant>(type: "timestamp with time zone", nullable: false),
+                    deleted_at = table.Column<Instant>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("pk_stickers", x => x.id);
+                    table.ForeignKey(
+                        name: "fk_stickers_files_image_id",
+                        column: x => x.image_id,
+                        principalTable: "files",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "fk_stickers_sticker_packs_pack_id",
+                        column: x => x.pack_id,
+                        principalTable: "sticker_packs",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "ix_sticker_packs_publisher_id",
+                table: "sticker_packs",
+                column: "publisher_id");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_stickers_image_id",
+                table: "stickers",
+                column: "image_id");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_stickers_pack_id",
+                table: "stickers",
+                column: "pack_id");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "stickers");
+
+            migrationBuilder.DropTable(
+                name: "sticker_packs");
+        }
+    }
+}

DysonNetwork.Sphere/Migrations/AppDatabaseModelSnapshot.cs

@@ -1763,6 +1763,102 @@ namespace DysonNetwork.Sphere.Migrations
                     b.ToTable("realm_members", (string)null);
                 });
 
+            modelBuilder.Entity("DysonNetwork.Sphere.Sticker.Sticker", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<Instant>("CreatedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("created_at");
+
+                    b.Property<Instant?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("deleted_at");
+
+                    b.Property<string>("ImageId")
+                        .IsRequired()
+                        .HasColumnType("character varying(128)")
+                        .HasColumnName("image_id");
+
+                    b.Property<Guid>("PackId")
+                        .HasColumnType("uuid")
+                        .HasColumnName("pack_id");
+
+                    b.Property<string>("Slug")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)")
+                        .HasColumnName("slug");
+
+                    b.Property<Instant>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("updated_at");
+
+                    b.HasKey("Id")
+                        .HasName("pk_stickers");
+
+                    b.HasIndex("ImageId")
+                        .HasDatabaseName("ix_stickers_image_id");
+
+                    b.HasIndex("PackId")
+                        .HasDatabaseName("ix_stickers_pack_id");
+
+                    b.ToTable("stickers", (string)null);
+                });
+
+            modelBuilder.Entity("DysonNetwork.Sphere.Sticker.StickerPack", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<Instant>("CreatedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("created_at");
+
+                    b.Property<Instant?>("DeletedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("deleted_at");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasMaxLength(4096)
+                        .HasColumnType("character varying(4096)")
+                        .HasColumnName("description");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(1024)
+                        .HasColumnType("character varying(1024)")
+                        .HasColumnName("name");
+
+                    b.Property<string>("Prefix")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)")
+                        .HasColumnName("prefix");
+
+                    b.Property<long>("PublisherId")
+                        .HasColumnType("bigint")
+                        .HasColumnName("publisher_id");
+
+                    b.Property<Instant>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("updated_at");
+
+                    b.HasKey("Id")
+                        .HasName("pk_sticker_packs");
+
+                    b.HasIndex("PublisherId")
+                        .HasDatabaseName("ix_sticker_packs_publisher_id");
+
+                    b.ToTable("sticker_packs", (string)null);
+                });
+
             modelBuilder.Entity("DysonNetwork.Sphere.Storage.CloudFile", b =>
                 {
                     b.Property<string>("Id")
@@ -2421,6 +2517,39 @@ namespace DysonNetwork.Sphere.Migrations
                     b.Navigation("Realm");
                 });
 
+            modelBuilder.Entity("DysonNetwork.Sphere.Sticker.Sticker", b =>
+                {
+                    b.HasOne("DysonNetwork.Sphere.Storage.CloudFile", "Image")
+                        .WithMany()
+                        .HasForeignKey("ImageId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_stickers_files_image_id");
+
+                    b.HasOne("DysonNetwork.Sphere.Sticker.StickerPack", "Pack")
+                        .WithMany()
+                        .HasForeignKey("PackId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_stickers_sticker_packs_pack_id");
+
+                    b.Navigation("Image");
+
+                    b.Navigation("Pack");
+                });
+
+            modelBuilder.Entity("DysonNetwork.Sphere.Sticker.StickerPack", b =>
+                {
+                    b.HasOne("DysonNetwork.Sphere.Post.Publisher", "Publisher")
+                        .WithMany()
+                        .HasForeignKey("PublisherId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_sticker_packs_publishers_publisher_id");
+
+                    b.Navigation("Publisher");
+                });
+
             modelBuilder.Entity("DysonNetwork.Sphere.Storage.CloudFile", b =>
                 {
                     b.HasOne("DysonNetwork.Sphere.Account.Account", "Account")

DysonNetwork.Sphere/Program.cs

@@ -15,6 +15,7 @@ using DysonNetwork.Sphere.Localization;
 using DysonNetwork.Sphere.Permission;
 using DysonNetwork.Sphere.Post;
 using DysonNetwork.Sphere.Realm;
+using DysonNetwork.Sphere.Sticker;
 using DysonNetwork.Sphere.Storage;
 using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.AspNetCore.Localization;
@@ -162,6 +163,7 @@ builder.Services.AddScoped<PostService>();
 builder.Services.AddScoped<RealmService>();
 builder.Services.AddScoped<ChatRoomService>();
 builder.Services.AddScoped<ChatService>();
+builder.Services.AddScoped<StickerService>();
 
 // Timed task
 

DysonNetwork.Sphere/Sticker/Sticker.cs

@@ -0,0 +1,28 @@
+using System.ComponentModel.DataAnnotations;
+using DysonNetwork.Sphere.Storage;
+
+namespace DysonNetwork.Sphere.Sticker;
+
+public class Sticker : ModelBase
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    [MaxLength(128)] public string Slug { get; set; } = null!;
+
+    public string ImageId { get; set; } = null!;
+    public CloudFile Image { get; set; } = null!;
+    
+    public Guid PackId { get; set; }
+    public StickerPack Pack { get; set; } = null!;
+}
+
+public class StickerPack : ModelBase
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    [MaxLength(1024)] public string Name { get; set; } = null!;
+    [MaxLength(4096)] public string Description { get; set; } = string.Empty;
+    [MaxLength(128)] public string Prefix { get; set; } = null!;
+    
+    public long PublisherId { get; set; }
+    public Post.Publisher Publisher { get; set; } = null!;
+}
+

DysonNetwork.Sphere/Sticker/StickerController.cs

@@ -0,0 +1,305 @@
+using System.ComponentModel.DataAnnotations;
+using DysonNetwork.Sphere.Permission;
+using DysonNetwork.Sphere.Post;
+using DysonNetwork.Sphere.Storage;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace DysonNetwork.Sphere.Sticker;
+
+[ApiController]
+[Route("/stickers")]
+public class StickerController(AppDatabase db, StickerService st) : ControllerBase
+{
+    private async Task<IActionResult> _CheckStickerPackPermissions(Guid packId, Account.Account currentUser, PublisherMemberRole requiredRole)
+    {
+        var pack = await db.StickerPacks
+            .Include(p => p.Publisher)
+            .FirstOrDefaultAsync(p => p.Id == packId);
+    
+        if (pack is null) 
+            return NotFound("Sticker pack not found");
+
+        var member = await db.PublisherMembers
+            .FirstOrDefaultAsync(m => m.AccountId == currentUser.Id && m.PublisherId == pack.PublisherId);
+        if (member is null) 
+            return StatusCode(403, "You are not a member of this publisher");
+        if (member.Role < requiredRole)
+            return StatusCode(403, $"You need to be at least a {requiredRole} to perform this action");
+
+        return Ok();
+    }
+
+    [HttpGet]
+    public async Task<ActionResult<List<StickerPack>>> ListStickerPacks([FromQuery] int offset = 0,
+        [FromQuery] int take = 20)
+    {
+        var totalCount = await db.StickerPacks.CountAsync();
+        var packs = await db.StickerPacks
+            .OrderByDescending(e => e.CreatedAt)
+            .Skip(offset)
+            .Take(take)
+            .ToListAsync();
+
+        Response.Headers["X-Total"] = totalCount.ToString();
+        return Ok(packs);
+    }
+
+    [HttpGet("{id:guid}")]
+    public async Task<ActionResult<StickerPack>> GetStickerPack(Guid id)
+    {
+        var pack = await db.StickerPacks
+            .FirstOrDefaultAsync(p => p.Id == id);
+
+        if (pack is null) return NotFound();
+        return Ok(pack);
+    }
+
+    public class StickerPackRequest
+    {
+        [MaxLength(1024)] public string? Name { get; set; }
+        [MaxLength(4096)] public string? Description { get; set; }
+        [MaxLength(128)] public string? Prefix { get; set; }
+    }
+
+    [HttpPost]
+    [RequiredPermission("global", "sticker.packs.create")]
+    public async Task<ActionResult<StickerPack>> CreateStickerPack([FromBody] StickerPackRequest request)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account.Account currentUser) return Unauthorized();
+
+        if (string.IsNullOrEmpty(request.Name))
+            return BadRequest("Name is required");
+        if (string.IsNullOrEmpty(request.Prefix))
+            return BadRequest("Prefix is required");
+
+        var publisherName = Request.Headers["X-Pub"].ToString();
+        if (string.IsNullOrEmpty(publisherName))
+            return BadRequest("Publisher name is required in X-Pub header");
+
+        var publisher =
+            await db.Publishers.FirstOrDefaultAsync(p => p.Name == publisherName && p.AccountId == currentUser.Id);
+        if (publisher == null)
+            return BadRequest("Publisher not found");
+
+        var pack = new StickerPack
+        {
+            Name = request.Name!,
+            Description = request.Description ?? string.Empty,
+            Prefix = request.Prefix!,
+            PublisherId = publisher.Id
+        };
+
+        db.StickerPacks.Add(pack);
+        await db.SaveChangesAsync();
+        return Ok(pack);
+    }
+    
+    [HttpPatch("{id:guid}")]
+    public async Task<ActionResult<StickerPack>> UpdateStickerPack(Guid id, [FromBody] StickerPackRequest request)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account.Account currentUser) 
+            return Unauthorized();
+
+        var pack = await db.StickerPacks
+            .Include(p => p.Publisher)
+            .FirstOrDefaultAsync(p => p.Id == id);
+        
+        if (pack is null) 
+            return NotFound();
+
+        var member = await db.PublisherMembers
+            .FirstOrDefaultAsync(m => m.AccountId == currentUser.Id && m.PublisherId == pack.PublisherId);
+        
+        if (member is null) 
+            return StatusCode(403, "You are not a member of this publisher");
+        
+        if (member.Role < PublisherMemberRole.Editor)
+            return StatusCode(403, "You need to be at least an editor to update sticker packs");
+
+        if (request.Name is not null)
+            pack.Name = request.Name;
+        if (request.Description is not null)
+            pack.Description = request.Description;
+        if (request.Prefix is not null)
+            pack.Prefix = request.Prefix;
+
+        db.StickerPacks.Update(pack);
+        await db.SaveChangesAsync();
+        return Ok(pack);
+    }
+    
+    [HttpDelete("{id:guid}")]
+    public async Task<IActionResult> DeleteStickerPack(Guid id)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account.Account currentUser) 
+            return Unauthorized();
+
+        var pack = await db.StickerPacks
+            .Include(p => p.Publisher)
+            .FirstOrDefaultAsync(p => p.Id == id);
+        if (pack is null) 
+            return NotFound();
+
+        var member = await db.PublisherMembers
+            .FirstOrDefaultAsync(m => m.AccountId == currentUser.Id && m.PublisherId == pack.PublisherId);
+        if (member is null) 
+            return StatusCode(403, "You are not a member of this publisher");
+        if (member.Role < PublisherMemberRole.Editor)
+            return StatusCode(403, "You need to be an editor to delete sticker packs");
+
+        await st.DeleteStickerPackAsync(pack);
+        return NoContent();
+    }
+    
+
+    [HttpGet("{packId:guid}/stickers")]
+    public async Task<ActionResult<List<Sticker>>> ListStickers(Guid packId, [FromQuery] int offset = 0,
+        [FromQuery] int take = 20)
+    {
+        var totalCount = await db.Stickers
+            .Where(s => s.Pack.Id == packId)
+            .CountAsync();
+
+        var stickers = await db.Stickers
+            .Where(s => s.Pack.Id == packId)
+            .Include(e => e.Pack)
+            .Include(e => e.Image)
+            .OrderByDescending(e => e.CreatedAt)
+            .Skip(offset)
+            .Take(take)
+            .ToListAsync();
+
+        Response.Headers["X-Total"] = totalCount.ToString();
+        return Ok(stickers);
+    }
+    
+    [HttpGet("lookup/{identifier}")]
+    public async Task<ActionResult<Sticker>> GetStickerByIdentifier(string identifier)
+    {
+        IQueryable<Sticker> query = db.Stickers
+            .Include(e => e.Pack)
+            .Include(e => e.Image);
+        query = Guid.TryParse(identifier, out var guid)
+            ? query.Where(e => e.Id == guid)
+            : query.Where(e => e.Pack.Prefix + e.Slug == identifier);
+        var sticker = await query.FirstOrDefaultAsync();
+
+        if (sticker is null) return NotFound();
+        return Ok(sticker);
+    }
+
+    [HttpGet("{packId:guid}/stickers/{id:guid}")]
+    public async Task<ActionResult<Sticker>> GetSticker(Guid packId, Guid id)
+    {
+        var sticker = await db.Stickers
+            .Where(s => s.Pack.Id == packId && s.Id == id)
+            .Include(e => e.Pack)
+            .Include(e => e.Image)
+            .FirstOrDefaultAsync();
+        if (sticker is null) return NotFound();
+
+        return Ok(sticker);
+    }
+
+    public class StickerRequest
+    {
+        [MaxLength(128)] public string? Slug { get; set; } = null!;
+        public string? ImageId { get; set; }
+    }
+
+    [HttpPatch("{packId:guid}/stickers/{id:guid}")]
+    public async Task<IActionResult> UpdateSticker(Guid packId, Guid id, [FromBody] StickerRequest request)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account.Account currentUser) 
+            return Unauthorized();
+
+        var permissionCheck = await _CheckStickerPackPermissions(packId, currentUser, PublisherMemberRole.Editor);
+        if (permissionCheck is not OkResult) 
+            return permissionCheck;
+
+        var sticker = await db.Stickers
+            .Include(s => s.Pack)
+            .ThenInclude(p => p.Publisher)
+            .FirstOrDefaultAsync(e => e.Id == id && e.Pack.Id == packId);
+    
+        if (sticker is null) 
+            return NotFound();
+
+        if (request.Slug is not null)
+            sticker.Slug = request.Slug;
+        
+        CloudFile? image = null;
+        if (request.ImageId is not null)
+        {
+            image = await db.Files.FirstOrDefaultAsync(e => e.Id == request.ImageId);
+            if (image is null)
+                return BadRequest("Image not found");
+            sticker.ImageId = request.ImageId;
+        }
+
+        sticker = await st.UpdateStickerAsync(sticker, image);
+        return Ok(sticker);
+    }
+
+    [HttpDelete("{packId:guid}/stickers/{id:guid}")]
+    public async Task<IActionResult> DeleteSticker(Guid packId, Guid id)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account.Account currentUser) 
+            return Unauthorized();
+
+        var permissionCheck = await _CheckStickerPackPermissions(packId, currentUser, PublisherMemberRole.Editor);
+        if (permissionCheck is not OkResult) 
+            return permissionCheck;
+
+        var sticker = await db.Stickers
+            .Include(s => s.Pack)
+            .ThenInclude(p => p.Publisher)
+            .FirstOrDefaultAsync(e => e.Id == id && e.Pack.Id == packId);
+    
+        if (sticker is null) 
+            return NotFound();
+
+        await st.DeleteStickerAsync(sticker);
+        return NoContent();
+    }
+
+    [HttpPost("{packId:guid}/stickers")]
+    [RequiredPermission("global", "stickers.create")]
+    public async Task<IActionResult> CreateSticker(Guid packId, [FromBody] StickerRequest request)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account.Account currentUser) 
+            return Unauthorized();
+        
+        if (string.IsNullOrWhiteSpace(request.Slug)) 
+            return BadRequest("Slug is required.");
+        if (request.ImageId is null) 
+            return BadRequest("Image is required.");
+
+        var permissionCheck = await _CheckStickerPackPermissions(packId, currentUser, PublisherMemberRole.Editor);
+        if (permissionCheck is not OkResult) 
+            return permissionCheck;
+
+        var pack = await db.StickerPacks
+            .Include(p => p.Publisher)
+            .FirstOrDefaultAsync(e => e.Id == packId);
+        
+        if (pack is null) 
+            return BadRequest("Sticker pack was not found.");
+
+        var image = await db.Files.FirstOrDefaultAsync(e => e.Id == request.ImageId);
+        if (image is null) 
+            return BadRequest("Image was not found.");
+
+        var sticker = new Sticker
+        {
+            Slug = request.Slug,
+            ImageId = image.Id,
+            Image = image,
+            Pack = pack
+        };
+
+        sticker = await st.CreateStickerAsync(sticker);
+        return Ok(sticker);
+    }
+}

DysonNetwork.Sphere/Sticker/StickerService.cs

@@ -0,0 +1,55 @@
+using DysonNetwork.Sphere.Storage;
+using Microsoft.EntityFrameworkCore;
+
+namespace DysonNetwork.Sphere.Sticker;
+
+public class StickerService(AppDatabase db, FileService fs)
+{
+    public async Task<Sticker> CreateStickerAsync(Sticker sticker)
+    {
+        db.Stickers.Add(sticker);
+        await db.SaveChangesAsync();
+        
+        await fs.MarkUsageAsync(sticker.Image, 1);
+
+        return sticker;
+    }
+
+    public async Task<Sticker> UpdateStickerAsync(Sticker sticker, CloudFile? newImage)
+    {
+        if (newImage != null)
+        {
+            await fs.MarkUsageAsync(sticker.Image, -1);
+            sticker.Image = newImage;
+            await fs.MarkUsageAsync(sticker.Image, 1);
+        }
+
+        db.Stickers.Update(sticker);
+        await db.SaveChangesAsync();
+
+        return sticker;
+    }
+
+    public async Task DeleteStickerAsync(Sticker sticker)
+    {
+        db.Stickers.Remove(sticker);
+        await db.SaveChangesAsync();
+        await fs.MarkUsageAsync(sticker.Image, -1);
+    }
+    
+    public async Task DeleteStickerPackAsync(StickerPack pack)
+    {
+        var stickers = await db.Stickers
+            .Include(s => s.Image)
+            .Where(s => s.PackId == pack.Id)
+            .ToListAsync();
+    
+        var images = stickers.Select(s => s.Image).ToList();
+        
+        db.Stickers.RemoveRange(stickers);
+        db.StickerPacks.Remove(pack);
+        await db.SaveChangesAsync();
+        
+        await fs.MarkUsageRangeAsync(images, -1);
+    }
+}