Added transcription providers (#619)

app/MindWork AI Studio/Provider/SelfHosted/Host.cs

@@ -5,7 +5,8 @@ public enum Host
     NONE,
 
     LM_STUDIO,
-    LLAMACPP,
+    LLAMA_CPP,
+    WHISPER_CPP,
     OLLAMA,
     VLLM,
 }

app/MindWork AI Studio/Provider/SelfHosted/HostExtensions.cs

@@ -7,7 +7,8 @@ public static class HostExtensions
         Host.NONE => "None",
 
         Host.LM_STUDIO => "LM Studio",
-        Host.LLAMACPP => "llama.cpp",
+        Host.LLAMA_CPP => "llama.cpp",
+        Host.WHISPER_CPP => "whisper.cpp",
         Host.OLLAMA => "ollama",
         Host.VLLM => "vLLM",
 
@@ -24,7 +25,28 @@ public static class HostExtensions
         _ => "chat/completions",
     };
     
-    public static bool AreEmbeddingsSupported(this Host host)
+    public static string TranscriptionURL(this Host host) => host switch
+    {
+        _ => "audio/transcriptions",
+    };
+    
+    public static bool IsChatSupported(this Host host)
+    {
+        switch (host)
+        {
+            case Host.WHISPER_CPP:
+                return false;
+            
+            default:
+            case Host.OLLAMA:
+            case Host.VLLM:
+            case Host.LM_STUDIO:
+            case Host.LLAMA_CPP:
+                return true;
+        }
+    }
+    
+    public static bool IsEmbeddingSupported(this Host host)
     {
         switch (host)
         {
@@ -34,7 +56,23 @@ public static class HostExtensions
                 return true;
             
             default:
-            case Host.LLAMACPP:
+            case Host.LLAMA_CPP:
+                return false;
+        }
+    }
+    
+    public static bool IsTranscriptionSupported(this Host host)
+    {
+        switch (host)
+        {
+            case Host.OLLAMA:
+            case Host.VLLM:
+            case Host.WHISPER_CPP:
+                return true;
+            
+            default:
+            case Host.LM_STUDIO:
+            case Host.LLAMA_CPP:
                 return false;
         }
     }

app/MindWork AI Studio/Provider/SelfHosted/ProviderSelfHosted.cs

@@ -6,12 +6,15 @@ using System.Text.Json;
 using AIStudio.Chat;
 using AIStudio.Provider.OpenAI;
 using AIStudio.Settings;
+using AIStudio.Tools.PluginSystem;
 
 namespace AIStudio.Provider.SelfHosted;
 
 public sealed class ProviderSelfHosted(Host host, string hostname) : BaseProvider(LLMProviders.SELF_HOSTED, $"{hostname}{host.BaseURL()}", LOGGER)
 {
     private static readonly ILogger<ProviderSelfHosted> LOGGER = Program.LOGGER_FACTORY.CreateLogger<ProviderSelfHosted>();
+    
+    private static string TB(string fallbackEN) => I18N.I.T(fallbackEN, typeof(ProviderSelfHosted).Namespace, nameof(ProviderSelfHosted));
 
     #region Implementation of IProvider
 
@@ -91,7 +94,7 @@ public sealed class ProviderSelfHosted(Host host, string hostname) : BaseProvide
         {
             switch (host)
             {
-                case Host.LLAMACPP:
+                case Host.LLAMA_CPP:
                     // Right now, llama.cpp only supports one model.
                     // There is no API to list the model(s).
                     return [ new Provider.Model("as configured by llama.cpp", null) ];
@@ -138,6 +141,35 @@ public sealed class ProviderSelfHosted(Host host, string hostname) : BaseProvide
         }
     }
     
+    /// <inheritdoc />
+    public override Task<IEnumerable<Provider.Model>> GetTranscriptionModels(string? apiKeyProvisional = null, CancellationToken token = default)
+    {
+        try
+        {
+            switch (host)
+            {
+                case Host.WHISPER_CPP:
+                    return Task.FromResult<IEnumerable<Provider.Model>>(
+                        new List<Provider.Model>
+                        {
+                            new("loaded-model", TB("Model as configured by whisper.cpp")),
+                        });
+                
+                case Host.OLLAMA:
+                case Host.VLLM:
+                    return this.LoadModels([], [], token, apiKeyProvisional);
+                
+                default:
+                    return Task.FromResult(Enumerable.Empty<Provider.Model>());
+            }
+        }
+        catch (Exception e)
+        {
+            LOGGER.LogError(e, "Failed to load transcription models from self-hosted provider.");
+            return Task.FromResult(Enumerable.Empty<Provider.Model>());
+        }
+    }
+    
     #endregion
 
     private async Task<IEnumerable<Provider.Model>> LoadModels(string[] ignorePhrases, string[] filterPhrases, CancellationToken token, string? apiKeyProvisional = null)