🚀 [Code] Updated architecture to "Chat Completion"

ChatGPT/Constants/APIConstants.cs

@@ -1,11 +1,10 @@
-namespace ChatGPT.Constants
+namespace ChatGPT.Constants;
+
+public static class APIConstants
 {
-    public static class APIConstants
-    {
-        public const string OpenAIUrl = "https://api.openai.com/";
-        public const string OpenAIToken = "OPENAI_API_KEY_HERE";
+    public const string OpenAIUrl = "https://api.openai.com/";
+    public const string OpenAIToken = "OPENAI_API_KEY_HERE";
 
-        public const string OpenAIEndpoint_Completions = "v1/completions";
-        public const string OpenAIEndpoint_Generations = "v1/images/generations";
-    }
+    public const string OpenAIEndpoint_Completions = "v1/chat/completions";
+    public const string OpenAIEndpoint_Generations = "v1/images/generations";
 }

ChatGPT/Models/Choice.cs

@@ -1,8 +1,13 @@
-namespace ChatGPT.Models
+namespace ChatGPT.Models;
+
+public class Choice
 {
-	public class Choice
-	{
-		public string Text { get; set; }
-		public int Index { get; set; }
-	}
+    public Message Message { get; set; }
 }
+
+public class Message
+{
+    public string Role { get; set; } = "assistant";
+
+    public string Content { get; set; }
+}

ChatGPT/Models/CompletionRequest.cs

@@ -1,19 +1,21 @@
 using System.Text.Json.Serialization;
 
-namespace ChatGPT.Models
+namespace ChatGPT.Models;
+
+public class CompletionRequest
 {
-    public class CompletionRequest
-    {
-        [JsonPropertyName("model")]
-        public string Model { get; set; } = "gpt-3.5-turbo-instruct";
+    [JsonPropertyName("model")]
+    public string Model { get; set; }
 
-        [JsonPropertyName("prompt")]
-        public string Prompt { get; set; }
+    [JsonPropertyName("messages")]
+    public List<MessageRequest> Messages { get; set; }
+}
 
-        [JsonPropertyName("temperature")]
-        public double Temperature { get; set; } = 0;
+public class MessageRequest
+{
+    [JsonPropertyName("role")]
+    public string Role { get; set; }
 
-        [JsonPropertyName("max_tokens")]
-        public int MaxTokens { get; set; } = 100;
-    }
-}
+    [JsonPropertyName("content")]
+    public string Content { get; set; }
+}

ChatGPT/Models/CompletionResponse.cs

@@ -1,8 +1,19 @@
-namespace ChatGPT.Models
+namespace ChatGPT.Models;
+
+public class CompletionResponse
 {
-	public class CompletionResponse
-	{
-		public string Id { get; set; }
-		public List<Choice> Choices { get; set; }
-	}
+    public string Id { get; set; }
+
+    public List<Choice> Choices { get; set; }
+
+    public Usage Usage { get; set; }
 }
+
+public class Usage
+{
+    public int Prompt_Tokens { get; set; } = 9;
+
+    public int Completion_Tokens { get; set; } = 12;
+
+    public int Total_Tokens { get; set; } = 21;
+}

ChatGPT/Models/GeneratedImage.cs

@@ -1,7 +1,6 @@
-namespace ChatGPT.Models
+namespace ChatGPT.Models;
+
+public class GeneratedImage
 {
-	public class GeneratedImage
-	{
-		public string Url { get; set; }
-	}
+    public string Url { get; set; }
 }

ChatGPT/Models/GenerationRequest.cs

@@ -1,16 +1,15 @@
 using System.Text.Json.Serialization;
 
-namespace ChatGPT.Models
+namespace ChatGPT.Models;
+
+public class GenerationRequest
 {
-	public class GenerationRequest
-	{
-		[JsonPropertyName("prompt")]
-		public string Prompt { get; set; }
+    [JsonPropertyName("prompt")]
+    public string Prompt { get; set; }
 
-		[JsonPropertyName("n")]
-		public int N { get; set; } = 1;
+    [JsonPropertyName("n")]
+    public int N { get; set; } = 1;
 
-		[JsonPropertyName("size")]
-		public string Size { get; set; } = "512x512";
-	}
+    [JsonPropertyName("size")]
+    public string Size { get; set; } = "512x512";
 }

ChatGPT/Models/GenerationResponse.cs

@@ -1,7 +1,6 @@
-namespace ChatGPT.Models
+namespace ChatGPT.Models;
+
+public class GenerationResponse
 {
-    public class GenerationResponse
-    {
-        public List<GeneratedImage> Data { get; set; }
-    }
+    public List<GeneratedImage> Data { get; set; }
 }

ChatGPT/Models/LocalMessage.cs

@@ -0,0 +1,9 @@
+namespace ChatGPT.Models;
+
+public class LocalMessage
+{
+    public string Text { get; set; }
+    public bool IsUserMessage { get; set; }
+    public bool IsTextActive { get; set; }
+    public bool IsImageActive { get; set; }
+}

ChatGPT/Services/IOpenAIService.cs

@@ -1,9 +1,8 @@
-namespace ChatGPT.Services
+namespace ChatGPT.Services;
+
+public interface IOpenAIService
 {
-	public interface IOpenAIService
-	{
-		Task<string> AskQuestion(string query);
+    Task<string> AskQuestion(string query);
 
-		Task<string> CreateImage(string query);
-	}
+    Task<string> CreateImage(string query);
 }

ChatGPT/Services/OpenAIService.cs

@@ -5,61 +5,73 @@
 using System.Text;
 using System.Text.Json;
 
-namespace ChatGPT.Services
+namespace ChatGPT.Services;
+
+public class OpenAIService : IOpenAIService
 {
-    public class OpenAIService : IOpenAIService
-    {
-        HttpClient client;
-        JsonSerializerOptions options = new() { PropertyNameCaseInsensitive = true };
+    HttpClient client;
+    JsonSerializerOptions options = new() { PropertyNameCaseInsensitive = true };
 
-        public OpenAIService()
-        {
-            client = new HttpClient();
-            client.BaseAddress = new Uri(APIConstants.OpenAIUrl);
-            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", APIConstants.OpenAIToken);
-            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
-        }
+    public OpenAIService()
+    {
+        client = new HttpClient();
+        client.BaseAddress = new Uri(APIConstants.OpenAIUrl);
+        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", APIConstants.OpenAIToken);
+        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+    }
 
-        public async Task<string> AskQuestion(string query)
+    public async Task<string> AskQuestion(string query)
+    {
+        var completion = new CompletionRequest
         {
-            var completion = new CompletionRequest()
+            Model = "gpt-4o-mini",
+            Messages = new List<MessageRequest>
             {
-                Prompt = query
-            };
-
-            var body = JsonSerializer.Serialize(completion);
-            var content = new StringContent(body, Encoding.UTF8, "application/json");
+                new MessageRequest
+                {
+                    Role = "system",
+                    Content = "You are a helpful assistant."
+                },
+                new MessageRequest
+                {
+                    Role = "user",
+                    Content = query
+                }
+            }
+        };
 
-            var response = await client.PostAsync(APIConstants.OpenAIEndpoint_Completions, content);
+        var body = JsonSerializer.Serialize(completion);
+        var content = new StringContent(body, Encoding.UTF8, "application/json");
 
-            if (response.IsSuccessStatusCode)
-            {
-                var data = await response.Content.ReadFromJsonAsync<CompletionResponse>(options);
-                return data?.Choices?.FirstOrDefault().Text;
-            }
+        var response = await client.PostAsync(APIConstants.OpenAIEndpoint_Completions, content);
 
-            return default;
+        if (response.IsSuccessStatusCode)
+        {
+            var data = await response.Content.ReadFromJsonAsync<CompletionResponse>(options);
+            return data?.Choices?.FirstOrDefault().Message.Content;
         }
 
-        public async Task<string> CreateImage(string query)
-        {
-            var generation = new GenerationRequest()
-            {
-                Prompt = query
-            };
+        return default;
+    }
 
-            var body = JsonSerializer.Serialize(generation);
-            var content = new StringContent(body, Encoding.UTF8, "application/json");
+    public async Task<string> CreateImage(string query)
+    {
+        var generation = new GenerationRequest()
+        {
+            Prompt = query
+        };
 
-            var response = await client.PostAsync(APIConstants.OpenAIEndpoint_Generations, content);
+        var body = JsonSerializer.Serialize(generation);
+        var content = new StringContent(body, Encoding.UTF8, "application/json");
 
-            if (response.IsSuccessStatusCode)
-            {
-                var data = await response.Content.ReadFromJsonAsync<GenerationResponse>(options);
-                return data.Data?.FirstOrDefault()?.Url;
-            }
+        var response = await client.PostAsync(APIConstants.OpenAIEndpoint_Generations, content);
 
-            return default;
+        if (response.IsSuccessStatusCode)
+        {
+            var data = await response.Content.ReadFromJsonAsync<GenerationResponse>(options);
+            return data.Data?.FirstOrDefault()?.Url;
         }
+
+        return default;
     }
 }

ChatGPT/ViewModels/BaseViewModel.cs

@@ -1,10 +1,9 @@
 using CommunityToolkit.Mvvm.ComponentModel;
 
-namespace ChatGPT.ViewModels
+namespace ChatGPT.ViewModels;
+
+public partial class BaseViewModel : ObservableObject
 {
-    public partial class BaseViewModel : ObservableObject
-    {
-        [ObservableProperty]
-        bool isBusy;
-    }
+    [ObservableProperty]
+    bool isBusy;
 }