Initial commit - MarketAlly.GitCommitEditor library

Extensions/ServiceCollectionExtensions.cs

@@ -0,0 +1,70 @@
+using Microsoft.Extensions.DependencyInjection;
+using MarketAlly.GitCommitEditor.Models.HistoryHealth;
+using MarketAlly.GitCommitEditor.Options;
+using MarketAlly.GitCommitEditor.Rewriters;
+using MarketAlly.GitCommitEditor.Services;
+
+namespace MarketAlly.GitCommitEditor.Extensions;
+
+public static class ServiceCollectionExtensions
+{
+    /// <summary>
+    /// Adds GitMessageImprover services to the service collection.
+    /// </summary>
+    public static IServiceCollection AddGitMessageImprover(
+        this IServiceCollection services,
+        Action<GitImproverOptions> configureOptions)
+    {
+        var options = new GitImproverOptions();
+        configureOptions(options);
+        options.ValidateAndThrow();
+
+        services.AddSingleton(options);
+        services.AddSingleton(options.Rules);
+        services.AddSingleton(options.Ai);
+
+        services.AddSingleton<IStateRepository>(sp =>
+            new FileStateRepository(options.StateFilePath));
+
+        // Cost tracking service (singleton to accumulate costs across session)
+        // Note: App should register ICostPersistenceProvider before calling AddGitMessageImprover
+        // for persistence support, or costs will only be tracked for the current session
+        services.AddSingleton<ICostTrackingService>(sp =>
+        {
+            var persistence = sp.GetService<ICostPersistenceProvider>();
+            return new CostTrackingService(persistence);
+        });
+
+        services.AddSingleton<ICommitMessageAnalyzer, CommitMessageAnalyzer>();
+        services.AddSingleton<IGitOperationsService, GitOperationsService>();
+
+        // Use DynamicCommitRewriter which switches between AI and Mock at runtime
+        // based on whether API key is configured
+        services.AddSingleton<ICommitMessageRewriter>(sp => new DynamicCommitRewriter(
+            sp.GetRequiredService<AiOptions>(),
+            sp.GetRequiredService<ICostTrackingService>()));
+
+        // History health analysis services
+        services.AddSingleton<HealthScoringWeights>();
+        services.AddSingleton<ICommitAnalyzer>(sp =>
+            new CommitAnalyzer(sp.GetRequiredService<CommitMessageRules>()));
+        services.AddSingleton<IHistoryHealthAnalyzer, HistoryHealthAnalyzer>();
+        services.AddSingleton<IHealthReportGenerator, HealthReportGenerator>();
+
+        // Cleanup executor
+        services.AddSingleton<ICleanupExecutor>(sp => new CleanupExecutor(
+            sp.GetRequiredService<IGitOperationsService>(),
+            sp.GetRequiredService<ICommitMessageAnalyzer>(),
+            sp.GetRequiredService<ICommitMessageRewriter>()));
+
+        // Git diagnostic service (AI-powered issue diagnosis)
+        services.AddSingleton<IGitDiagnosticService>(sp =>
+            new GitDiagnosticService(
+                sp.GetRequiredService<AiOptions>(),
+                sp.GetRequiredService<ICostTrackingService>()));
+
+        services.AddSingleton<IGitMessageImproverService, GitMessageImproverService>();
+
+        return services;
+    }
+}