Initial chat template (#5837)

src/ProjectTemplates/.gitignore

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+# We're not tracking any package-lock.json files in source control here because
+# we don't ship pre-generated NPM lockfiles in the templates. But we don't put
+# them in the project template's .gitignore file because they should be tracked
+# in source control when people actually create projects from the templates.
+package-lock.json
+
+*/src/**/*.csproj

src/ProjectTemplates/Directory.Build.props

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+<Project>
+  <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.props', '$(MSBuildThisFileDirectory)../'))" />
+
+  <PropertyGroup>
+    <NoWarn>$(NoWarn);SA1633;CS1591</NoWarn>
+    <SkipAnalyzers>true</SkipAnalyzers>
+    <ManagePackageVersionsCentrally>false</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+</Project>

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/Microsoft.Extensions.AI.Templates.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <PackageType>Template</PackageType>
+    <TargetFrameworks>$(NetCoreTargetFrameworks);netstandard2.0</TargetFrameworks>
+    <Description>Project templates for Microsoft.Extensions.AI.</Description>
+    <PackageTags>dotnet-new;templates;ai</PackageTags>
+
+    <Stage>preview</Stage>
+    <SuppressFinalPackageVersion>true</SuppressFinalPackageVersion>
+    <Workstream>AI</Workstream>
+    <MinCodeCoverage>0</MinCodeCoverage>
+    <MinMutationScore>0</MinMutationScore>
+
+    <IsPackable>true</IsPackable>
+    <IsProjectReferenceProvider>false</IsProjectReferenceProvider>
+    <IncludeContentInPack>true</IncludeContentInPack>
+    <IncludeBuildOutput>false</IncludeBuildOutput>
+    <IncludeSymbols>false</IncludeSymbols>
+    <ContentTargetFolders>content</ContentTargetFolders>
+    <EnableDefaultItems>false</EnableDefaultItems>
+    <NoDefaultExcludes>true</NoDefaultExcludes>
+    <NoPackageAnalysis>true</NoPackageAnalysis>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Content Include="src\ChatWithCustomData\**\*" Exclude="**\bin\**;**\obj\**;**\node_modules\**;**\*.user;**\*.csproj.in;**\*.out.js;**\*.generated.css;**\package-lock.json" />
+    <Compile Remove="**\*" />
+  </ItemGroup>
+
+  <!-- Copy the .csproj.in files to corresponding .csproj files -->
+  <!-- The reason they are initially .csproj.in is that there's no other way to exclude them from the main build -->
+  <Target Name="PrepareCsprojFiles" BeforeTargets="PrepareForBuild">
+    <ItemGroup>
+      <_CsprojFiles Include="src\**\*.csproj.in" />
+    </ItemGroup>
+    <Copy SourceFiles="@(_CsprojFiles)" DestinationFiles="@(_CsprojFiles->'$([System.String]::Copy('%(Identity)').Replace('.csproj.in', '.csproj'))')" SkipUnchangedFiles="true" />
+  </Target>
+
+</Project>

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/README.md

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+# Microsoft.Extensions.AI.Templates
+
+Provides project templates for Microsoft.Extensions.AI.

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/src/ChatWithCustomData/.template.config/ide.host.json

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+{
+  "$schema": "https://json.schemastore.org/ide.host",
+  "order": 0,
+  "icon": "icon.png",
+  "symbolInfo": [
+    {
+      "id": "AiServiceProvider",
+      "isVisible": true
+    },
+    {
+      "id": "UseManagedIdentity",
+      "isVisible": true
+    },
+    {
+      "id": "VectorStore",
+      "isVisible": true
+    }
+  ]
+}

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/src/ChatWithCustomData/.template.config/template.json

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+{
+  "$schema": "http://json.schemastore.org/template",
+  "author": "Microsoft",
+  "classifications": [ "Common", "AI", "Web" ],
+  "identity": "Microsoft.Extensions.AI.Templates.Chat.CSharp",
+  "name": "AI Chat with Custom Data",
+  "description": "A project template for creating an AI chat application. It can perform retrieval-augmented generation (RAG) using your own data.",
+  "shortName": "chat",
+  "defaultName": "ChatApp",
+  "sourceName": "ChatWithCustomData.Web", // TODO: When we support multi-project output, this needs to change to ChatWithCustomData, then we need some other technique to make it avoid emitting a .Web suffix in the single-project case
+  "tags": {
+    "language": "C#",
+    "type": "project"
+  },
+  "guids": [
+    "d5681fae-b21b-4114-b781-48180f08c0c4"
+  ],
+  "sources": [{
+    "source": "./",
+    "target": "./",
+    "modifiers": [
+      {
+        // For now, we only produce single-project output.
+        // Later when we support multi-project output with Qdrant on Docker, we'll also emit
+        // a second project ChatWithCustomData.AppHost and hence will suppress this renaming.
+        "rename": {
+          "ChatWithCustomData.Web/": "./"
+        }
+      }
+    ]
+  }],
+  "symbols":{
+    "framework": {
+      "type": "parameter",
+      "description": "The target framework for the project.",
+      "datatype": "choice",
+      "choices": [
+        {
+          "choice": "net9.0",
+          "description": "Target net9.0"
+        }
+      ],
+      "replaces": "net9.0",
+      "defaultValue": "net9.0"
+    },
+    "hostIdentifier": {
+      "type": "bind",
+      "binding": "HostIdentifier"
+    },
+    "AiServiceProvider": {
+      "type": "parameter",
+      "displayName": "_AI service provider",
+      "datatype": "choice",
+      "defaultValue": "azureopenai",
+      "choices": [
+        // {
+        //   "choice": "githubmodels",
+        //   "displayName": "GitHub Models",
+        //   "description": "Uses GitHub Models"
+        // },
+        {
+          "choice": "azureopenai",
+          "displayName": "Azure OpenAI",
+          "description": "Uses Azure OpenAI service"
+        },
+        {
+          "choice": "openai",
+          "displayName": "OpenAI Platform",
+          "description": "Uses the OpenAI Platform"
+        },
+        {
+          "choice": "ollama",
+          "displayName": "Ollama (for local development)",
+          "description": "Uses Ollama with the llama3.2 model for local development"
+        }
+        // {
+        //   "choice": "azureaifoundry",
+        //   "displayName": "Azure AI Foundry (Preview)",
+        //   "description": "Uses Azure AI Foundry (Preview)"
+        // }
+      ]
+    },
+    "UseManagedIdentity": {
+      "type": "parameter",
+      "displayName": "Use managed identity",
+      "datatype": "bool",
+      "defaultValue": "true",
+      "isEnabled": "(AiServiceProvider == \"azureopenai\")",
+      "description": "Use managed identity to access Azure services"
+    },
+    "VectorStore": {
+      "type": "parameter",
+      "displayName": "_Vector store",
+      "datatype": "choice",
+      "defaultValue": "local",
+      "choices": [
+        {
+          "choice": "local",
+          "displayName": "Local on-disk (for prototyping)",
+          "description": "Uses a JSON file on disk. You can change the implementation to a real vector database before publishing."
+        },
+        {
+          "choice": "azureaisearch",
+          "displayName": "Azure AI Search",
+          "description": "Uses Azure AI Search. This also avoids the need to define a data ingestion pipeline, since it's managed by Azure AI Search."
+        }
+      ]
+    },
+    "IsAzureOpenAi": {
+      "type": "computed",
+      "value": "(AiServiceProvider == \"azureopenai\")"
+    },
+    "IsOpenAi": {
+      "type": "computed",
+      "value": "(AiServiceProvider == \"openai\")"
+    },
+    "IsGHModels": {
+      "type": "computed",
+      "value": "(AiServiceProvider == \"githubmodels\")"
+    },
+    "IsOllama": {
+      "type": "computed",
+      "value": "(AiServiceProvider == \"ollama\")"
+    },
+    "IsAzureAiFoundry": {
+      "type": "computed",
+      "value": "(AiServiceProvider == \"azureaifoundry\")"
+    },
+    "UseAzureAISearch": {
+      "type": "computed",
+      "value": "(VectorStore == \"azureaisearch\")"
+    },
+    "UseLocalVectorStore": {
+      "type": "computed",
+      "value": "(VectorStore == \"local\")"
+    },
+    "ChatModel": {
+      "type": "parameter",
+      "displayName": "Model/deployment for chat completions. Example: gpt-4o-mini",
+      "description": "Model/deployment for chat completions. Example: gpt-4o-mini"
+    },
+    "EmbeddingModel": {
+      "type": "parameter",
+      "displayName": "Model/deployment for embeddings. Example: text-embedding-3-small",
+      "description": "Model/deployment for embeddings. Example: text-embedding-3-small"
+    },
+    "OpenAiChatModelDefault": {
+      "type": "generated",      
+      "generator": "constant",
+      "parameters": {
+        "value": "gpt-4o-mini"
+      }
+    },
+    "OpenAiEmbeddingModelDefault": {
+      "type": "generated",      
+      "generator": "constant",
+      "parameters": {
+        "value": "text-embedding-3-small"
+      }
+    },
+    "OpenAiChatModel": {
+      "type": "generated",
+      "generator": "coalesce",
+      "parameters": {
+        "sourceVariableName": "ChatModel",
+        "fallbackVariableName": "OpenAiChatModelDefault"
+      },
+      "replaces": "gpt-4o-mini"
+    },
+    "OpenAiEmbeddingModel": {
+      "type": "generated",
+      "generator": "coalesce",
+      "parameters": {
+        "sourceVariableName": "EmbeddingModel",
+        "fallbackVariableName": "OpenAiEmbeddingModelDefault"
+      },
+      "replaces": "text-embedding-3-small"
+    },
+    "OllamaChatModelDefault": {
+      "type": "generated",      
+      "generator": "constant",
+      "parameters": {
+        "value": "llama3.1"
+      }
+    },
+    "OllamaEmbeddingModelDefault": {
+      "type": "generated",      
+      "generator": "constant",
+      "parameters": {
+        "value": "all-minilm"
+      }
+    },
+    "OllamaChatModel": {
+      "type": "generated",
+      "generator": "coalesce",
+      "parameters": {
+        "sourceVariableName": "ChatModel",
+        "fallbackVariableName": "OllamaChatModelDefault"
+      },
+      "replaces": "llama3.2"
+    },
+    "OllamaEmbeddingModel": {
+      "type": "generated",
+      "generator": "coalesce",
+      "parameters": {
+        "sourceVariableName": "EmbeddingModel",
+        "fallbackVariableName": "OllamaEmbeddingModelDefault"
+      },
+      "replaces": "all-minilm"
+    }
+  }
+}

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/src/ChatWithCustomData/ChatWithCustomData.Web/.gitignore

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+*.db
+*.db-*
+wwwroot/lib.out.js
+wwwroot/*.generated.css

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/src/ChatWithCustomData/ChatWithCustomData.Web/ChatWithCustomData.Web.csproj.in

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <Import Project="Tailwind.targets" />
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>d5681fae-b21b-4114-b781-48180f08c0c4</UserSecretsId>
+  </PropertyGroup>
+
+  <ItemGroup>
+<!--#if (IsOllama)
+    <PackageReference Include="OllamaSharp" Version="5.0.5" />
+#elif (IsGHModels)
+    <PackageReference Include="OpenAI" Version="2.1.0" />
+#elif (IsAzureAiFoundry)
+    <PackageReference Include="Azure.AI.Projects" Version="1.0.0-beta.3" />
+    <PackageReference Include="Azure.AI.OpenAI" Version="2.1.0" />
+#else -->
+    <PackageReference Include="Azure.AI.OpenAI" Version="2.1.0" />
+    <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.1.0-preview.1.25064.3" />
+<!--#endif -->
+<!--#if (UseManagedIdentity) -->
+    <PackageReference Include="Azure.Identity" Version="1.13.2" />
+<!--#endif -->
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.AI" Version="9.1.0-preview.1.25064.3" />
+    <PackageReference Include="Microsoft.SemanticKernel.Core" Version="1.34.0" />
+    <PackageReference Include="PdfPig" Version="0.1.9" />
+    <PackageReference Include="System.Linq.Async" Version="6.0.1" />
+<!--#if (UseAzureAISearch)
+    <PackageReference Include="Azure.Search.Documents" Version="11.6.0" />
+    <PackageReference Include="Microsoft.SemanticKernel.Connectors.AzureAISearch" Version="1.34.0-preview" />
+#endif -->
+  </ItemGroup>
+
+  <ItemGroup>
+    <Content Include="Data\**" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+  <Target Name="BuildNpmDependencies" BeforeTargets="PrepareForBuild"
+          Inputs="package-lock.json; rollup.config.js; wwwroot\lib.js" Outputs="wwwroot\lib.out.js">
+    <Exec Command="npm install" />
+    <Exec Command="npm run build" EnvironmentVariables="FORCE_COLOR=0" />
+  </Target>
+
+</Project>

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/src/ChatWithCustomData/ChatWithCustomData.Web/Components/App.razor

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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <base href="/" />
+    <link rel="stylesheet" href="@Assets["app.generated.css"]" />
+    <link rel="stylesheet" href="@Assets["ChatWithCustomData.Web.styles.css"]" />
+    <ImportMap />
+    <HeadOutlet @rendermode="@renderMode" />
+</head>
+
+<body>
+    <Routes @rendermode="@renderMode" />
+    <script src="lib.out.js"></script>
+    <script src="_framework/blazor.web.js"></script>
+</body>
+
+</html>
+
+@code {
+    private readonly IComponentRenderMode renderMode = new InteractiveServerRenderMode(prerender: false);
+}

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/src/ChatWithCustomData/ChatWithCustomData.Web/Components/Layout/LoadingSpinner.razor

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+<div class="lds-ellipsis"><div></div><div></div><div></div><div></div></div>