Add BasicChat-06OpenAIAPIs project for sentiment analysis

Introduced a new project, `BasicChat-06OpenAIAPIs`, to the solution, targeting .NET 9.0 and integrating OpenAI's GPT model for sentiment analysis. Updated the solution file to support Visual Studio 18 and added build configurations for the new project.

The project includes:
- A `Program.cs` file demonstrating API key retrieval, prompt creation, and interaction with OpenAI's `ChatClient`.
- Dependencies for AI and configuration management, including `Microsoft.Extensions.AI` and `OpenAI`.

These changes enhance the solution with generative AI capabilities.

Author: elbruno

03-CoreGenerativeAITechniques/src/BasicChat-06OpenAIAPIs/BasicChat-06OpenAIAPIs.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <RootNamespace>BasicChat_06OpenAIAPIs</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <UserSecretsId>82dba96a-152d-496e-8762-c2e93f97059c</UserSecretsId>
+  </PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="Microsoft.Extensions.AI" Version="9.7.1" />
+		<PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.7.1-preview.1.25365.4" />
+		<PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.7" />
+		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.7" />
+		<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="9.0.7" />
+		<PackageReference Include="OpenAI" Version="2.2.0" />
+	</ItemGroup>
+
+</Project>

03-CoreGenerativeAITechniques/src/BasicChat-06OpenAIAPIs/Program.cs

@@ -0,0 +1,28 @@
+using Microsoft.Extensions.AI;
+using Microsoft.Extensions.Configuration;
+using System.Text;
+
+var openai_apikey = Environment.GetEnvironmentVariable("APIKEY");
+if (string.IsNullOrEmpty(openai_apikey))
+{
+    var config = new ConfigurationBuilder().AddUserSecrets<Program>().Build();
+    openai_apikey = config["APIKEY"];
+}
+
+IChatClient client =
+    new OpenAI.Chat.ChatClient("gpt-4.1-mini", openai_apikey)
+    .AsIChatClient();
+
+// here we're building the prompt
+StringBuilder prompt = new StringBuilder();
+prompt.AppendLine("You will analyze the sentiment of the following product reviews. Each line is its own review. Output the sentiment of each review in a bulleted list and then provide a generate sentiment of all reviews. ");
+prompt.AppendLine("I bought this product and it's amazing. I love it!");
+prompt.AppendLine("This product is terrible. I hate it.");
+prompt.AppendLine("I'm not sure about this product. It's okay.");
+prompt.AppendLine("I found this product based on the other reviews. It worked for a bit, and then it didn't.");
+
+// send the prompt to the model and wait for the text completion
+var response = await client.GetResponseAsync(prompt.ToString());
+
+// display the response
+Console.WriteLine(response.Text);

03-CoreGenerativeAITechniques/src/CoreGenerativeAITechniques.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.12.35514.174
+# Visual Studio Version 18
+VisualStudioVersion = 18.0.10829.221 main
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BasicChat-01MEAI", "BasicChat-01MEAI\BasicChat-01MEAI.csproj", "{F924B9FC-D806-4350-BEC8-C0D4BB9E7C6D}"
 EndProject
@@ -105,6 +105,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MCP-01-HuggingFace", "MCP-0
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MCP-02-HuggingFace-Ollama", "MCP-02-HuggingFace-Ollama\MCP-02-HuggingFace-Ollama.csproj", "{CB155DBA-0E2D-437D-AB29-FF5B65B44A27}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BasicChat-06OpenAIAPIs", "BasicChat-06OpenAIAPIs\BasicChat-06OpenAIAPIs.csproj", "{48371925-76C4-40BD-A6F4-95E983771191}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -559,6 +561,18 @@ Global
 		{CB155DBA-0E2D-437D-AB29-FF5B65B44A27}.Release|x64.Build.0 = Release|Any CPU
 		{CB155DBA-0E2D-437D-AB29-FF5B65B44A27}.Release|x86.ActiveCfg = Release|Any CPU
 		{CB155DBA-0E2D-437D-AB29-FF5B65B44A27}.Release|x86.Build.0 = Release|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Debug|x64.Build.0 = Debug|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Debug|x86.Build.0 = Debug|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Release|Any CPU.Build.0 = Release|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Release|x64.ActiveCfg = Release|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Release|x64.Build.0 = Release|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Release|x86.ActiveCfg = Release|Any CPU
+		{48371925-76C4-40BD-A6F4-95E983771191}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -601,6 +615,7 @@ Global
 		{07F43AC9-EBB1-4F21-BC51-6DAD0F2F0E55} = {1248F5FA-C7D6-4876-8313-A15A942F84FE}
 		{769320A2-CE09-41EF-A345-8BE6ABBE2696} = {3D13EC01-716A-41D9-BC54-1871EC14D3DE}
 		{CB155DBA-0E2D-437D-AB29-FF5B65B44A27} = {3D13EC01-716A-41D9-BC54-1871EC14D3DE}
+		{48371925-76C4-40BD-A6F4-95E983771191} = {1248F5FA-C7D6-4876-8313-A15A942F84FE}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {961EEBAB-4149-4AA4-BEE7-9DAAE4C94133}