Added tool calling support (#731)

Co-authored-by: krut_ni <nils.kruthoff@dlr.de>
Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Assistants/Builder/LauncherTextsResponse.cs

@@ -0,0 +1,90 @@
+using System.Text.Json;
+
+namespace AIStudio.Assistants.Builder;
+
+/// <summary>
+/// The three texts a model writes for a direct chat launcher.
+/// </summary>
+/// <remarks>
+/// A launcher has no system prompt, no form, and no prompt builder, and its chat settings come
+/// straight from the Builder form. That leaves nothing for a model to write except the names a
+/// person reads, so it is asked for those alone and AI Studio writes the plugin.lua itself.
+/// </remarks>
+internal sealed class LauncherTextsResponse
+{
+    public const string SCHEMA_VERSION_VALUE = "assistant_builder_launcher_texts_v1";
+
+    private static readonly JsonSerializerOptions JSON_OPTIONS = new()
+    {
+        PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower,
+        AllowTrailingCommas = false,
+        ReadCommentHandling = JsonCommentHandling.Disallow,
+        MaxDepth = 8,
+    };
+
+    public string SchemaVersion { get; init; } = string.Empty;
+
+    /// <summary>
+    /// The plugin name, shown on the plugins page.
+    /// </summary>
+    public string PluginName { get; init; } = string.Empty;
+
+    /// <summary>
+    /// The title on the tile.
+    /// </summary>
+    public string Title { get; init; } = string.Empty;
+
+    /// <summary>
+    /// The short description, used for both the plugin and the tile.
+    /// </summary>
+    public string Description { get; init; } = string.Empty;
+
+    public static bool TryParse(string modelResponse, out LauncherTextsResponse response, out LuaResponseParseError error, out string technicalDetails)
+    {
+        response = new();
+        error = LuaResponseParseError.NONE;
+        technicalDetails = string.Empty;
+
+        var json = LuaResponse.ExtractJson(modelResponse);
+        if (string.IsNullOrWhiteSpace(json))
+        {
+            error = LuaResponseParseError.MISSING_JSON_OBJECT;
+            return false;
+        }
+
+        LauncherTextsResponse? parsed;
+        try
+        {
+            parsed = JsonSerializer.Deserialize<LauncherTextsResponse>(json, JSON_OPTIONS);
+        }
+        catch (JsonException e)
+        {
+            error = LuaResponseParseError.INVALID_JSON;
+            technicalDetails = e.Message;
+            return false;
+        }
+
+        if (parsed is null)
+        {
+            error = LuaResponseParseError.EMPTY_JSON_OBJECT;
+            return false;
+        }
+
+        if (!string.Equals(parsed.SchemaVersion, SCHEMA_VERSION_VALUE, StringComparison.Ordinal))
+        {
+            error = LuaResponseParseError.UNSUPPORTED_SCHEMA_VERSION;
+            return false;
+        }
+
+        if (string.IsNullOrWhiteSpace(parsed.PluginName) ||
+            string.IsNullOrWhiteSpace(parsed.Title) ||
+            string.IsNullOrWhiteSpace(parsed.Description))
+        {
+            error = LuaResponseParseError.INCOMPLETE_ASSISTANT_METADATA;
+            return false;
+        }
+
+        response = parsed;
+        return true;
+    }
+}