Merge pull request #8 from edgett/rag

New features:

Upload docs.
Chat with docs.
Persist settings to local storage.
Code improvements.

PalmHill.BlazorChat.ApiClient/BlazorChatApi.cs

@@ -0,0 +1,24 @@
+using PalmHill.BlazorChat.ApiClient.WebApiInterface;
+using Refit;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PalmHill.BlazorChat.ApiClient
+{
+    public class BlazorChatApi
+    {
+        public BlazorChatApi(HttpClient httpClient) 
+        { 
+            HttpClient = httpClient;
+            Attachment =  RestService.For<IAttachment>(httpClient);
+            Chat = RestService.For<IChat>(httpClient);
+        }
+
+        public HttpClient HttpClient { get; }
+        public IAttachment Attachment { get; }
+        public IChat Chat { get; }
+    }
+}

PalmHill.BlazorChat.ApiClient/PalmHill.BlazorChat.ApiClient.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Refit" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\PalmHill.BlazorChat\Shared\PalmHill.BlazorChat.Shared.csproj" />
+  </ItemGroup>
+
+</Project>

PalmHill.BlazorChat.ApiClient/README.md

@@ -0,0 +1,36 @@
+# PalmHill.BlazorChat.ApiClient
+
+This project is a .NET 8.0 library that provides an API client for the PalmHill Blazor Chat application. It uses the Refit library for HTTP communication.
+
+## Dependencies
+- .NET 8.0
+- Refit 7.0.0
+
+## Project References
+- PalmHill.BlazorChat.Shared
+
+## API Interface
+The API client provides an interface to interact with the chat API. The interface is defined in the `IChat` interface.
+
+### Methods
+- `Chat(InferenceRequest conversation)`: This method sends a chat message to the server and returns the server's response as a string. The chat message is encapsulated in an `InferenceRequest` object.
+- `Ask(InferenceRequest chatConversation)`: This method sends a chat message to the server and returns the server's response as a `ChatMessage` object. The chat message is encapsulated in an `InferenceRequest` object.
+- `CancelChat(Guid conversationId)`: This method sends a request to the server to cancel a chat conversation. The ID of the conversation to be cancelled is passed as a parameter.
+
+### BlazorChatApi.cs
+The `BlazorChatApi.cs` file contains the `BlazorChatApi` class, which is the main entry point for using the API client. It provides a convenient way to access the interface and its methods.
+
+The `BlazorChatApi` class has a constructor that takes a `HttpClient` object. This `HttpClient` object is used by the Refit library to make HTTP requests.
+
+The `BlazorChatApi` implments the interfaces by using Refit.
+
+## Usage
+To use this library, add a reference to it in your project and create an instance of the `IChat` interface using Refit's `RestService` class. Then, you can call the methods defined in the `IChat` interface.
+
+```csharp
+var httpClient = new HttpClient { BaseAddress = new Uri("https://api.example.com") };
+var blazorChatApi = new BlazorChatApi(httpClient);
+var response = await blazorChatApi.Chat.Chat(new InferenceRequest { /* ... */ });
+```
+
+Note: This library is not yet available on NuGet.

PalmHill.BlazorChat.ApiClient/WebApiInterface/IAttachment.cs

@@ -0,0 +1,22 @@
+using PalmHill.BlazorChat.Shared.Models;
+using Refit;
+
+
+namespace PalmHill.BlazorChat.ApiClient.WebApiInterface
+{
+    public interface IAttachment
+    {
+        [Get("/api/Attachment/list/{conversationId}")]
+        Task<IEnumerable<AttachmentInfo>> GetAttachments(string conversationId);
+
+        [Get("/api/Attachment/{attachmentId}")]
+        Task<ApiResponse<AttachmentInfo>> GetAttachmentById(string attachmentId);
+
+        [Multipart]
+        [Post("/api/Attachment/{conversationId}/{attachmentId}")]
+        Task<ApiResponse<AttachmentInfo>> AddAttachment(Guid conversationId, Guid attachmentId, [AliasAs("file")] StreamPart file);
+
+        [Delete("/api/Attachment/{attachmentId}")]
+        Task<ApiResponse<bool>> DeleteAttachment(Guid attachmentId);
+    }
+}

PalmHill.BlazorChat.ApiClient/WebApiInterface/IChat.cs

@@ -0,0 +1,19 @@
+using Refit;
+using PalmHill.BlazorChat.Shared.Models;
+
+
+namespace PalmHill.BlazorChat.ApiClient.WebApiInterface
+{
+    public interface IChat
+    {
+        [Post("/api/chat")]
+        Task<ApiResponse<string>> Chat(InferenceRequest conversation);
+
+        [Post("/api/chat/docs")]
+        Task<ApiResponse<ChatMessage>> Ask(InferenceRequest chatConversation);
+
+        [Delete("/api/chat/cancel/{conversationId}")]
+        public Task<ApiResponse<bool>> CancelChat(Guid conversationId);
+
+    }
+}

PalmHill.BlazorChat.sln

@@ -16,6 +16,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PalmHill.BlazorChat.Server"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PalmHill.BlazorChat.Shared", "PalmHill.BlazorChat\Shared\PalmHill.BlazorChat.Shared.csproj", "{F2337C3B-69E8-43F8-8D21-382C233702D0}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PalmHill.LlmMemory", "PalmHill.LlmMemory\PalmHill.LlmMemory.csproj", "{A3075AF8-E520-4B62-8D47-564D9C88E52A}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PalmHill.BlazorChat.ApiClient", "PalmHill.BlazorChat.ApiClient\PalmHill.BlazorChat.ApiClient.csproj", "{434FEDF0-2AD0-4276-AC06-E26126EEF237}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -38,6 +42,14 @@ Global
 		{F2337C3B-69E8-43F8-8D21-382C233702D0}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F2337C3B-69E8-43F8-8D21-382C233702D0}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F2337C3B-69E8-43F8-8D21-382C233702D0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A3075AF8-E520-4B62-8D47-564D9C88E52A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A3075AF8-E520-4B62-8D47-564D9C88E52A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A3075AF8-E520-4B62-8D47-564D9C88E52A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A3075AF8-E520-4B62-8D47-564D9C88E52A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{434FEDF0-2AD0-4276-AC06-E26126EEF237}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{434FEDF0-2AD0-4276-AC06-E26126EEF237}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{434FEDF0-2AD0-4276-AC06-E26126EEF237}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{434FEDF0-2AD0-4276-AC06-E26126EEF237}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PalmHill.BlazorChat/Client/Components/Attachment/AttachmentItemDisplay.razor

@@ -0,0 +1,129 @@
+@using PalmHill.BlazorChat.ApiClient
+@using PalmHill.BlazorChat.Shared.Models
+@inject BlazorChatApi BlazorChatApi
+
+@if (Attachment != null)
+{
+    <FluentPresenceBadge Style="width:100%;" Status="_presenceStatus" StatusTitle="@_presenceLabel">
+        <FluentCard Style="width:100%; padding:3px 3px" >
+            <div>
+                @Attachment.Name
+            </div>
+            <FluentButton IconStart="@(new Icons.Regular.Size16.Delete())"
+                          Loading="@_deleteInProgress"
+                          OnClick="@_deleteAttachment" 
+                          Title="Delete">
+            </FluentButton>
+        </FluentCard>
+    </FluentPresenceBadge>
+}
+
+
+@code {
+    /// <summary>
+    /// The <see cref="AttachmentInfo"/> to display
+    /// </summary>
+    [Parameter]
+    public AttachmentInfo? Attachment { get; set; }
+
+    /// <summary>
+    /// The <see cref="EventCallback"/> to invoke when the attachment is deleted. 
+    /// The event handler will remove the attachment from the list.
+    /// </summary>
+    [Parameter]
+    public EventCallback<AttachmentInfo> OnFileDeleted { get; set; }
+
+    private bool _deleteInProgress = false;
+
+    /// <summary>
+    /// Deletes the attachment by calling the api.
+    /// </summary>
+    /// <returns></returns>
+    private async Task _deleteAttachment()
+    {
+        if(Attachment == null)
+        { 
+            return; 
+        }
+
+        _deleteInProgress = true;
+        try
+        {
+            var apiResponse = await BlazorChatApi.Attachment.DeleteAttachment(Attachment.Id);
+
+            if (!apiResponse.IsSuccessStatusCode )
+            {
+                throw new Exception($"Failed to delete attachment. {apiResponse.StatusCode} {apiResponse.ReasonPhrase}");
+            }
+
+            if (!apiResponse.Content)
+            {
+                throw new Exception($"Failed to delete attachment. {apiResponse.StatusCode} {apiResponse.ReasonPhrase}");
+            }
+
+            if (apiResponse.IsSuccessStatusCode)
+            {               //Only invoke when the delete was successful. 
+                            //The event handler will remove the attachment from the list.
+                await OnFileDeleted.InvokeAsync(Attachment);
+            }
+
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"{ex}");
+        }
+        _deleteInProgress = false;
+    }
+
+    /// <summary>
+    /// The <see cref="PresenceStatus"/> to display on the attachment.
+    /// </summary>
+    private PresenceStatus _presenceStatus
+    {
+        get
+        {
+            if (Attachment == null)
+            {
+                return PresenceStatus.Busy;
+
+            }
+
+            var presenceStatus = Attachment.Status switch
+            {
+                AttachmentStatus.Pending => PresenceStatus.Away,
+                AttachmentStatus.Uploaded => PresenceStatus.Available,
+                AttachmentStatus.Failed => PresenceStatus.Busy,
+                _ => PresenceStatus.Busy
+            };
+
+            return presenceStatus;
+        }
+    }
+
+    /// <summary>
+    /// The tooltip text to display for the attachment.
+    /// </summary>
+    private string _presenceLabel
+    {
+        get
+        {
+            if (Attachment == null)
+            {
+                return "";
+
+            }
+
+            var presenceStatus = Attachment.Status switch
+            {
+                AttachmentStatus.Pending => "Pending",
+                AttachmentStatus.Uploaded => "Ready",
+                AttachmentStatus.Failed => "Failed",
+                _ => "Failed"
+            };
+
+            return presenceStatus;
+        }
+    }
+
+
+}

PalmHill.BlazorChat/Client/Components/Attachment/AttachmentList.razor

@@ -0,0 +1,22 @@
+@if (Controller!.UploadedFiles.Any())
+{
+    <div style="padding:3px 3px;">
+        @foreach (var file in Controller.UploadedFiles)
+        {
+            <AttachmentItemDisplay OnFileDeleted="_fileDeletedHandler" Attachment="file"></AttachmentItemDisplay>
+        }
+    </div>
+}
+@code {
+    [Parameter]
+    public ChatService? Controller { get; set; }
+
+    /// <summary>
+    /// Removes the deleted attachment from the <see cref="Controller"/>'s UploadedFiles list.
+    /// </summary>
+    /// <param name="deletedAttachment">The deleted <see cref="AttachmentInfo"></param>
+    private void _fileDeletedHandler(AttachmentInfo deletedAttachment)
+    {
+        Controller!.UploadedFiles.Remove(deletedAttachment);
+    }
+}

PalmHill.BlazorChat/Client/Components/Attachment/AttachmentManager.razor

@@ -0,0 +1,74 @@
+@using Microsoft.AspNetCore.Components.Forms
+@using Refit
+@inject BlazorChatApi BlazorChatApi;
+<InfoPanel IsOpen="Controller!.AttachmentsVisible" Title="Attachments">
+    <FluentSwitch 
+
+                  @bind-Value="Controller!.AttachmentsEnabled"
+                  Label="Enable"></FluentSwitch>
+
+    <FileInput Controller="Controller" OnInputFileChange="_uploadFiles">
+    </FileInput>
+
+    <AttachmentList Controller="Controller">
+    </AttachmentList>
+</InfoPanel>
+
+@code {
+
+    [Parameter]
+    public ChatService? Controller { get; set; }
+
+    /// <summary>
+    /// Uploads files to the server when the user selects them.
+    /// Adds to the <see cref="Controller"/>'s UploadedFiles list.
+    /// </summary>
+    /// <param name="e">The selected files.</param>
+    private async Task _uploadFiles(InputFileChangeEventArgs e)
+    {
+
+        var files = e.GetMultipleFiles();
+        var uploadedCount = 0;
+        var uploadTasks = new List<Task>();
+
+        foreach (var file in files)
+        {
+            var attachmentInfo = new AttachmentInfo();
+            attachmentInfo.ConversationId = Controller?.WebSocketChatConnection?.ConversationId;
+            attachmentInfo.Name = file.Name;
+            attachmentInfo.Size = file.Size;
+            attachmentInfo.ContentType = file.ContentType;
+            attachmentInfo.Status = AttachmentStatus.Pending;
+
+            Controller!.UploadedFiles.Add(attachmentInfo);
+
+            var uploadTask = new Task(async () =>
+            {
+                if (attachmentInfo?.ConversationId is null)
+                {
+                    attachmentInfo!.Status = AttachmentStatus.Failed;
+                    return;
+                }
+
+                var stream = file.OpenReadStream(10000000);
+                var streamPart = new StreamPart(stream, file.Name, file.ContentType);
+                var apiResponse = await BlazorChatApi.Attachment.AddAttachment(attachmentInfo.ConversationId.Value, attachmentInfo.Id, streamPart);
+                uploadedCount++;
+
+                if (!apiResponse.IsSuccessStatusCode)
+                {
+                    attachmentInfo.Status = AttachmentStatus.Failed;
+                }
+            });
+
+            uploadTasks.Add(uploadTask);
+        }
+
+        foreach (var uploadTask in uploadTasks)
+        {
+            uploadTask.Start();
+            await uploadTask;
+        }
+    }
+
+}