Code(API::AssistantsSeeder): Add seeding for default assistant in the…

… database

src/Client/StellarChat.Client.Web/Components/Assistants/AssistantForm.razor

@@ -53,7 +53,7 @@ Enter the Metaprompt here. This set of instructions will define your assistant's
 in every conversation, guiding how it interacts and responds. Keep it concise, clear, and
 reflective of the assistant's intended personality and capabilities.";
 
-    private const string DefaultAvatarUrl = "https://th.bing.com/th/id/OIG3.PYK1.ctv1ceJsoR9RZxZ?w=270&h=270&c=6&r=0&o=5&dpr=1.1&pid=ImgGn";
+    private const string DefaultAvatarUrl = "https://github.com/ktutak1337/Stellar-Chat/blob/main/docs/assets/images/_ed19c10c-bbad-4514-8df4-eef37400e218.jpg";
 
     private bool success;
 
@@ -122,7 +122,6 @@ reflective of the assistant's intended personality and capabilities.";
                 Name = assistant.Name,
                 Metaprompt = assistant.Metaprompt,
                 Description = assistant.Description,
-                // TODO: temp solution
                 AvatarUrl = assistant.AvatarUrl ?? DefaultAvatarUrl,
                 DefaultModel = assistant.DefaultModel,
                 DefaultVoice = assistant.DefaultVoice,
@@ -135,7 +134,6 @@ reflective of the assistant's intended personality and capabilities.";
 
     private void SetupNewAssistantParameters()
     {
-        // TODO: temp solution
         Assistant!.AvatarUrl = DefaultAvatarUrl;
         Assistant.IsDefault = false;
     }

src/Server/StellarChat.Server.Api/DAL/Mongo/Seeders/AssistantsSeeder.cs

@@ -0,0 +1,50 @@
+namespace StellarChat.Server.Api.DAL.Mongo.Seeders;
+
+internal sealed class AssistantsSeeder(ILogger<AssistantsSeeder> logger, TimeProvider clock) : IAppSettingsSeeder
+{
+    private readonly ILogger<AssistantsSeeder> _logger = logger;
+    private readonly TimeProvider _clock = clock;
+
+    public async Task SeedAsync(IMongoDatabase database)
+    {
+        var settingsCollection = database.GetCollection<AssistantDocument>("assistants");
+        var cursor = await settingsCollection.FindAsync(FilterDefinition<AssistantDocument>.Empty);
+        var documents = await cursor.ToListAsync();
+
+        if (documents.Any())
+        {
+            return;
+        }
+
+        var now = _clock.GetLocalNow();
+
+        string metaprompt = @"
+You are an AI assistant designed for ultra-concise, engaging conversations. You are chatting with the user via Stellar Chat app.
+RULES:
+- Format responses in Markdown or JSON, like `**bold**` or `{""key"": ""value""}`
+- Always wrap code with triple backticks and keywords with `single backticks`
+Current date: {Date}
+";
+
+        var document = new AssistantDocument
+        {
+            Id = Guid.NewGuid(),
+            Name = "Sophia",
+            Description = "An AI assistant for seamless chat and accurate answers",
+            AvatarUrl = "https://github.com/ktutak1337/Stellar-Chat/blob/main/docs/assets/images/_ed19c10c-bbad-4514-8df4-eef37400e218.jpg",
+            IsDefault = true,
+            Metaprompt= metaprompt,
+            DefaultModel = "gpt-4o",
+            DefaultVoice = "Nova",
+            CreatedAt = now,
+            UpdatedAt = now,
+        };
+
+        _logger.LogInformation("Started seeding 'assistants' collection.");
+
+        await settingsCollection.InsertOneAsync(document);
+
+        _logger.LogInformation($"Added a default assistant to the database with 'ID': {document.Id}, and 'Name': {document.Name}.");
+        _logger.LogInformation("Finished seeding 'assistants' collection.");
+    }
+}