Allow selection of self-hosted models

app/MindWork AI Studio/Components/Pages/Settings.razor

@@ -1,5 +1,6 @@
 @page "/settings"
 @using AIStudio.Provider
+@using Host = AIStudio.Provider.SelfHosted.Host
 
 <MudText Typo="Typo.h3" Class="mb-12">Settings</MudText>
 
@@ -27,9 +28,17 @@
                 <MudTd>@context.UsedProvider</MudTd>
                 <MudTd>
                     @if (context.UsedProvider is not Providers.SELF_HOSTED)
+                    {
                         @context.Model
+                    }
+                    else if (context.UsedProvider is Providers.SELF_HOSTED && context.Host is not Host.LLAMACPP)
+                    {
+                        @context.Model
+                    }
                     else
+                    {
                         @("as selected by provider")
+                    }
                 </MudTd>
                 <MudTd Style="text-align: left;">
                     <MudButton Variant="Variant.Filled" Color="Color.Info" StartIcon="@Icons.Material.Filled.OpenInBrowser" Class="ma-2" Href="@this.GetProviderDashboardURL(context.UsedProvider)" Target="_blank" Disabled="@(context.UsedProvider is Providers.NONE or Providers.SELF_HOSTED)">

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

@@ -33,7 +33,7 @@ public sealed class ProviderSelfHosted(Settings.Provider provider) : BaseProvide
         // Prepare the OpenAI HTTP chat request:
         var providerChatRequest = JsonSerializer.Serialize(new ChatRequest
         {
-            Model = (await this.GetTextModels(jsRuntime, settings, token: token)).First().Id,
+            Model = chatModel.Id,
             
             // Build the messages:
             // - First of all the system prompt
@@ -137,17 +137,33 @@ public sealed class ProviderSelfHosted(Settings.Provider provider) : BaseProvide
 
     public async Task<IEnumerable<Provider.Model>> GetTextModels(IJSRuntime jsRuntime, SettingsManager settings, string? apiKeyProvisional = null, CancellationToken token = default)
     {
-        var request = new HttpRequestMessage(HttpMethod.Get, "models");
+        try
-        var response = await this.httpClient.SendAsync(request, token);
+        {
-        if(!response.IsSuccessStatusCode)
+            switch (provider.Host)
+            {
+                case Host.LLAMACPP:
+                    // 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") ];
+            
+                case Host.LM_STUDIO:
+                case Host.OLLAMA:
+                    var lmStudioRequest = new HttpRequestMessage(HttpMethod.Get, "models");
+                    var lmStudioResponse = await this.httpClient.SendAsync(lmStudioRequest, token);
+                    if(!lmStudioResponse.IsSuccessStatusCode)
                         return [];
 
-        var modelResponse = await response.Content.ReadFromJsonAsync<ModelsResponse>(token);
+                    var lmStudioModelResponse = await lmStudioResponse.Content.ReadFromJsonAsync<ModelsResponse>(token);
-        if (modelResponse.Data.Length > 1)
+                    return lmStudioModelResponse.Data.Select(n => new Provider.Model(n.Id));
-            Console.WriteLine("Warning: multiple models found; using the first one.");
+            }
 
-        var firstModel = modelResponse.Data.First();
+            return [];
-        return [ new Provider.Model(firstModel.Id) ];
+        }
+        catch(Exception e)
+        {
+            Console.WriteLine($"Failed to load text models from self-hosted provider: {e.Message}");
+            return [];
+        }
     }
 
     #pragma warning disable CS1998 // Async method lacks 'await' operators and will run synchronously

app/MindWork AI Studio/Settings/ProviderDialog.razor

@@ -51,8 +51,8 @@
             </MudSelect>
 
             <MudStack Row="@true" AlignItems="AlignItems.Center">
-                <MudButton Disabled="@(!this.CanLoadModels)" Variant="Variant.Filled" Size="Size.Small" StartIcon="@Icons.Material.Filled.Refresh" OnClick="this.ReloadModels">Load</MudButton>
+                <MudButton Disabled="@(!this.CanLoadModels())" Variant="Variant.Filled" Size="Size.Small" StartIcon="@Icons.Material.Filled.Refresh" OnClick="this.ReloadModels">Load</MudButton>
-                <MudSelect Disabled="@this.IsSelfHostedOrNone" @bind-Value="@this.DataModel" Label="Model" Class="mb-3" OpenIcon="@Icons.Material.Filled.FaceRetouchingNatural" AdornmentColor="Color.Info" Adornment="Adornment.Start" Validation="@this.ValidatingModel">
+                <MudSelect Disabled="@this.IsNoneProvider" @bind-Value="@this.DataModel" Label="Model" Class="mb-3" OpenIcon="@Icons.Material.Filled.FaceRetouchingNatural" AdornmentColor="Color.Info" Adornment="Adornment.Start" Validation="@this.ValidatingModel">
                     @foreach (var model in this.availableModels)
                     {
                         <MudSelectItem Value="@model">@model</MudSelectItem>

app/MindWork AI Studio/Settings/ProviderDialog.razor.cs

@@ -122,10 +122,11 @@ public partial class ProviderDialog : ComponentBase
             this.dataEditingPreviousInstanceName = this.DataInstanceName.ToLowerInvariant();
             
             //
-            // We cannot load the API key nor models for self-hosted providers:
+            // We cannot load the API key for self-hosted providers:
             //
             if (this.DataProvider is Providers.SELF_HOSTED)
             {
+                await this.ReloadModels();
                 await base.OnInitializedAsync();
                 return;
             }
@@ -182,7 +183,8 @@ public partial class ProviderDialog : ComponentBase
         // Use the data model to store the provider.
         // We just return this data to the parent component:
         var addedProviderSettings = this.CreateProviderSettings();
-        
+        if (addedProviderSettings.UsedProvider != Providers.SELF_HOSTED)
+        {
             // We need to instantiate the provider to store the API key:
             var provider = addedProviderSettings.CreateProvider();
             
@@ -194,6 +196,7 @@ public partial class ProviderDialog : ComponentBase
                 await this.form.Validate();
                 return;
             }
+        }
 
         this.MudDialog.Close(DialogResult.Ok(addedProviderSettings));
     }
@@ -219,7 +222,7 @@ public partial class ProviderDialog : ComponentBase
     
     private string? ValidatingModel(Model model)
     {
-        if(this.DataProvider is Providers.SELF_HOSTED)
+        if(this.DataProvider is Providers.SELF_HOSTED && this.DataHost == Host.LLAMACPP)
             return null;
         
         if (model == default)
@@ -319,12 +322,44 @@ public partial class ProviderDialog : ComponentBase
         this.availableModels.AddRange(orderedModels);
     }
     
-    private bool CanLoadModels => !string.IsNullOrWhiteSpace(this.dataAPIKey) && this.DataProvider != Providers.NONE && this.DataProvider != Providers.SELF_HOSTED;
+    private bool CanLoadModels()
+    {
+        if (this.DataProvider is Providers.SELF_HOSTED)
+        {
+            switch (this.DataHost)
+            {
+                case Host.NONE:
+                    return false;
+
+                case Host.LLAMACPP:
+                    return false;
+
+                case Host.LM_STUDIO:
+                    return true;
+
+                case Host.OLLAMA:
+                    return true;
+
+                default:
+                    return false;
+            }
+        }
+
+        if(this.DataProvider is Providers.NONE)
+            return false;
+        
+        if(string.IsNullOrWhiteSpace(this.dataAPIKey))
+            return false;
+        
+        return true;
+    }
 
     private bool IsCloudProvider => this.DataProvider is not Providers.SELF_HOSTED;
     
     private bool IsSelfHostedOrNone => this.DataProvider is Providers.SELF_HOSTED or Providers.NONE;
     
+    private bool IsNoneProvider => this.DataProvider is Providers.NONE;
+
     private string GetProviderCreationURL() => this.DataProvider switch
     {
         Providers.OPEN_AI => "https://platform.openai.com/signup",