feat: Thumbnail-Varianten (256px) für Agent-Avatare und Session-Images
- ImageService: ResizeDataUrlSmall() für 256px WebP-Thumbnails (Quality 70) - Neue DB-Spalten: agents.avatar_small, sessions.image_small - Migration generiert Thumbnails für bestehende Bilder automatisch - Listen-Endpoints (/api/agents, /api/sessions) liefern kleine Variante - Detail-Endpoints liefern weiterhin das volle 512px-Bild - Frontend unverändert (Cards nutzen automatisch die kleineren Bilder)
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@@ -8,6 +8,7 @@ using Gott.Models;
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using Microsoft.Data.Sqlite;
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using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.Formats.Webp;
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using SixLabors.ImageSharp.Processing;
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namespace Gott.Services;
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@@ -262,8 +263,14 @@ public class DatabaseService
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CREATE INDEX IF NOT EXISTS idx_shared_messages_message ON shared_messages(message_id);
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");
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TryAddColumn(conn, "agents", "avatar_small", "TEXT");
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TryAddColumn(conn, "sessions", "image_small", "TEXT");
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// Migration: Bestehende PNG/JPEG-Avatare/Images zu WebP konvertieren
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MigrateImagesToWebP(conn);
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// Migration: Small-Thumbnails für bestehende Bilder generieren
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MigrateImageThumbnails(conn);
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}
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private void MigrateImagesToWebP(SqliteConnection conn)
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@@ -298,6 +305,70 @@ public class DatabaseService
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Console.WriteLine($"[Migration] Converted {agentImages.Count} agent avatars and {sessionImages.Count} session images to WebP");
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}
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private void MigrateImageThumbnails(SqliteConnection conn)
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{
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const int smallSize = 256;
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const int smallQuality = 70;
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// Agent Avatare ohne Thumbnail
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var agentsWithoutThumb = conn.Query<(string AgentId, string Avatar)>(
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"SELECT agent_id, avatar FROM agents WHERE avatar IS NOT NULL AND avatar != '' AND (avatar_small IS NULL OR avatar_small = '')")
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.ToList();
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foreach (var (agentId, avatar) in agentsWithoutThumb)
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{
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var small = ResizeDataUrlToWebP(avatar, smallSize, smallQuality);
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if (small != null)
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conn.Execute("UPDATE agents SET avatar_small = @small WHERE agent_id = @agentId", new { small, agentId });
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}
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// Session Images ohne Thumbnail
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var sessionsWithoutThumb = conn.Query<(string SessionId, string Image)>(
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"SELECT session_id, image FROM sessions WHERE image IS NOT NULL AND image != '' AND (image_small IS NULL OR image_small = '')")
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.ToList();
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foreach (var (sessionId, image) in sessionsWithoutThumb)
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{
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var small = ResizeDataUrlToWebP(image, smallSize, smallQuality);
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if (small != null)
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conn.Execute("UPDATE sessions SET image_small = @small WHERE session_id = @sessionId", new { small, sessionId });
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}
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if (agentsWithoutThumb.Count > 0 || sessionsWithoutThumb.Count > 0)
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Console.WriteLine($"[Migration] Generated {agentsWithoutThumb.Count} agent thumbnails and {sessionsWithoutThumb.Count} session thumbnails");
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}
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private static string ResizeDataUrlToWebP(string dataUrl, int maxSide, int quality)
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{
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try
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{
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var commaIndex = dataUrl.IndexOf(',');
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if (commaIndex < 0) return null;
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var base64 = dataUrl.Substring(commaIndex + 1);
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var bytes = Convert.FromBase64String(base64);
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using var image = Image.Load(bytes);
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if (image.Width > maxSide || image.Height > maxSide)
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{
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image.Mutate(x => x.Resize(new ResizeOptions
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{
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Size = new Size(maxSide, maxSide),
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Mode = ResizeMode.Max
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}));
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}
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using var ms = new MemoryStream();
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image.Save(ms, new WebpEncoder { Quality = quality });
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return "data:image/webp;base64," + Convert.ToBase64String(ms.ToArray());
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}
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catch
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{
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return null;
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}
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}
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private static string ConvertDataUrlToWebP(string dataUrl, int quality)
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{
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try
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@@ -395,8 +466,8 @@ public class DatabaseService
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agent.CreatedAt = now;
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agent.UpdatedAt = now;
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await conn.ExecuteAsync(@"
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INSERT INTO agents (agent_id, user_id, name, avatar, description, model, tool_choice, custom_commands, auto_commit, use_soul, use_identity, use_user_info, use_memory, use_web_search, web_search_version, allow_user_choice, task_instruction, avatar_scale, avatar_offset_x, avatar_offset_y, is_deleted, created_at, updated_at)
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VALUES (@AgentId, @UserId, @Name, @Avatar, @Description, @Model, @ToolChoice, @CustomCommands, @AutoCommit, @UseSoul, @UseIdentity, @UseUserInfo, @UseMemory, @UseWebSearch, @WebSearchVersion, @AllowUserChoice, @TaskInstruction, @AvatarScale, @AvatarOffsetX, @AvatarOffsetY, 0, @CreatedAt, @UpdatedAt)
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INSERT INTO agents (agent_id, user_id, name, avatar, avatar_small, description, model, tool_choice, custom_commands, auto_commit, use_soul, use_identity, use_user_info, use_memory, use_web_search, web_search_version, allow_user_choice, task_instruction, avatar_scale, avatar_offset_x, avatar_offset_y, is_deleted, created_at, updated_at)
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VALUES (@AgentId, @UserId, @Name, @Avatar, @AvatarSmall, @Description, @Model, @ToolChoice, @CustomCommands, @AutoCommit, @UseSoul, @UseIdentity, @UseUserInfo, @UseMemory, @UseWebSearch, @WebSearchVersion, @AllowUserChoice, @TaskInstruction, @AvatarScale, @AvatarOffsetX, @AvatarOffsetY, 0, @CreatedAt, @UpdatedAt)
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", agent);
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return agent;
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}
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@@ -420,7 +491,7 @@ public class DatabaseService
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using var conn = CreateConnection();
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agent.UpdatedAt = DateTime.UtcNow.ToString("o");
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await conn.ExecuteAsync(@"
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UPDATE agents SET name = @Name, avatar = @Avatar, description = @Description,
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UPDATE agents SET name = @Name, avatar = @Avatar, avatar_small = @AvatarSmall, description = @Description,
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model = @Model, tool_choice = @ToolChoice,
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custom_commands = @CustomCommands, auto_commit = @AutoCommit,
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use_soul = @UseSoul, use_identity = @UseIdentity, use_user_info = @UseUserInfo, use_memory = @UseMemory, use_web_search = @UseWebSearch, web_search_version = @WebSearchVersion,
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@@ -440,7 +511,7 @@ public class DatabaseService
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// ── Sessions ──
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public async Task<SessionRecord> CreateSession(string userId, string name = null, string description = null, string image = null, string agentId = null, string workspace = null, string context = null, string customCommands = null, double avatarScale = 1.0, double avatarOffsetX = 0, double avatarOffsetY = 0, string reviewAgentId = null, int maxReviewIterations = 3, string finalizerAgentId = null, string preparerAgentId = null)
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public async Task<SessionRecord> CreateSession(string userId, string name = null, string description = null, string image = null, string imageSmall = null, string agentId = null, string workspace = null, string context = null, string customCommands = null, double avatarScale = 1.0, double avatarOffsetX = 0, double avatarOffsetY = 0, string reviewAgentId = null, int maxReviewIterations = 3, string finalizerAgentId = null, string preparerAgentId = null)
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{
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using var conn = CreateConnection();
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var now = DateTime.UtcNow.ToString("o");
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@@ -451,6 +522,7 @@ public class DatabaseService
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Name = name,
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Description = description,
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Image = image,
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ImageSmall = imageSmall,
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AgentId = agentId,
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Workspace = workspace,
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Context = context,
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@@ -466,8 +538,8 @@ public class DatabaseService
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UpdatedAt = now
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};
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await conn.ExecuteAsync(@"
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INSERT INTO sessions (session_id, user_id, name, description, image, agent_id, workspace, context, custom_commands, avatar_scale, avatar_offset_x, avatar_offset_y, review_agent_id, max_review_iterations, finalizer_agent_id, preparer_agent_id, created_at, updated_at)
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VALUES (@SessionId, @UserId, @Name, @Description, @Image, @AgentId, @Workspace, @Context, @CustomCommands, @AvatarScale, @AvatarOffsetX, @AvatarOffsetY, @ReviewAgentId, @MaxReviewIterations, @FinalizerAgentId, @PreparerAgentId, @CreatedAt, @UpdatedAt)
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INSERT INTO sessions (session_id, user_id, name, description, image, image_small, agent_id, workspace, context, custom_commands, avatar_scale, avatar_offset_x, avatar_offset_y, review_agent_id, max_review_iterations, finalizer_agent_id, preparer_agent_id, created_at, updated_at)
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VALUES (@SessionId, @UserId, @Name, @Description, @Image, @ImageSmall, @AgentId, @Workspace, @Context, @CustomCommands, @AvatarScale, @AvatarOffsetX, @AvatarOffsetY, @ReviewAgentId, @MaxReviewIterations, @FinalizerAgentId, @PreparerAgentId, @CreatedAt, @UpdatedAt)
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", session);
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return session;
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}
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@@ -541,7 +613,12 @@ public class DatabaseService
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if (body.TryGetProperty("image", out var img))
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{
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var imageData = img.GetString();
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if (imageService != null) imageData = imageService.ResizeDataUrl(imageData);
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if (imageService != null)
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{
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sets.Add("image_small = @imageSmall");
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p.Add("imageSmall", imageService.ResizeDataUrlSmall(imageData));
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imageData = imageService.ResizeDataUrl(imageData);
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}
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sets.Add("image = @image");
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p.Add("image", imageData);
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}
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