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| 1 | +using EssentialCSharp.Chat.Common.Services; |
| 2 | +using Microsoft.Extensions.Configuration; |
| 3 | +using Microsoft.Extensions.DependencyInjection; |
| 4 | +using Microsoft.SemanticKernel; |
| 5 | + |
| 6 | +namespace EssentialCSharp.Chat.Common.Extensions; |
| 7 | + |
| 8 | +public static class ServiceCollectionExtensions |
| 9 | +{ |
| 10 | + /// <summary> |
| 11 | + /// Adds Azure OpenAI and related AI services to the service collection |
| 12 | + /// </summary> |
| 13 | + /// <param name="services">The service collection to add services to</param> |
| 14 | + /// <param name="aiOptions">The AI configuration options</param> |
| 15 | + /// <returns>The service collection for chaining</returns> |
| 16 | + public static IServiceCollection AddAzureOpenAIServices(this IServiceCollection services, AIOptions aiOptions) |
| 17 | + { |
| 18 | + // Validate required configuration |
| 19 | + if (aiOptions == null) |
| 20 | + { |
| 21 | + throw new InvalidOperationException("AIOptions cannot be null."); |
| 22 | + } |
| 23 | + |
| 24 | + if (string.IsNullOrEmpty(aiOptions.Endpoint) || |
| 25 | + string.IsNullOrEmpty(aiOptions.ApiKey)) |
| 26 | + { |
| 27 | + throw new InvalidOperationException("Azure OpenAI Endpoint and ApiKey must be properly configured in AIOptions. Please update your configuration with valid values."); |
| 28 | + } |
| 29 | + |
| 30 | + if (string.IsNullOrEmpty(aiOptions.PostgresConnectionString) || |
| 31 | + aiOptions.PostgresConnectionString.Contains("your-postgres-connection-string")) |
| 32 | + { |
| 33 | + throw new InvalidOperationException("PostgreSQL connection string must be properly configured in AIOptions for vector store. Please update your configuration with a valid connection string."); |
| 34 | + } |
| 35 | + |
| 36 | +#pragma warning disable SKEXP0010 // Type is for evaluation purposes only and is subject to change or removal in future updates. |
| 37 | + |
| 38 | + // Register Azure OpenAI services |
| 39 | + services.AddAzureOpenAIEmbeddingGenerator( |
| 40 | + aiOptions.VectorGenerationDeploymentName, |
| 41 | + aiOptions.Endpoint, |
| 42 | + aiOptions.ApiKey); |
| 43 | + |
| 44 | + services.AddAzureOpenAIChatClient( |
| 45 | + aiOptions.ChatDeploymentName, |
| 46 | + aiOptions.Endpoint, |
| 47 | + aiOptions.ApiKey); |
| 48 | + |
| 49 | + // Add PostgreSQL vector store |
| 50 | + services.AddPostgresVectorStore(aiOptions.PostgresConnectionString); |
| 51 | + |
| 52 | +#pragma warning restore SKEXP0010 |
| 53 | + |
| 54 | + // Register shared AI services |
| 55 | + services.AddSingleton<EmbeddingService>(); |
| 56 | + services.AddSingleton<AISearchService>(); |
| 57 | + services.AddSingleton<AIChatService>(); |
| 58 | + services.AddSingleton<MarkdownChunkingService>(); |
| 59 | + |
| 60 | + return services; |
| 61 | + } |
| 62 | + |
| 63 | + /// <summary> |
| 64 | + /// Adds Azure OpenAI and related AI services to the service collection using configuration |
| 65 | + /// </summary> |
| 66 | + /// <param name="services">The service collection to add services to</param> |
| 67 | + /// <param name="configuration">The configuration to read AIOptions from</param> |
| 68 | + /// <returns>The service collection for chaining</returns> |
| 69 | + public static IServiceCollection AddAzureOpenAIServices(this IServiceCollection services, IConfiguration configuration) |
| 70 | + { |
| 71 | + // Configure AI options from configuration |
| 72 | + services.Configure<AIOptions>(configuration.GetSection("AIOptions")); |
| 73 | + |
| 74 | + var aiOptions = configuration.GetSection("AIOptions").Get<AIOptions>(); |
| 75 | + |
| 76 | + return aiOptions == null |
| 77 | + ? throw new InvalidOperationException("AIOptions section is missing from configuration.") |
| 78 | + : services.AddAzureOpenAIServices(aiOptions); |
| 79 | + } |
| 80 | +} |
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