Map CLI profiles to selected modules

preparation.go

@@ -2,8 +2,12 @@ package releasekit
 
 import (
 	"context"
+	"errors"
+	"fmt"
+	"strings"
 
 	internalpreparation "gitea.maximumdirect.net/eric/ReleaseKit/internal/preparation"
+	"gitea.maximumdirect.net/eric/ReleaseKit/internal/releaseidentity"
 )
 
 // TaggedCheckoutRequest selects a stable tag and the full Git object ID
@@ -29,12 +33,28 @@ func PrepareTaggedCheckout(ctx context.Context, request TaggedCheckoutRequest) e
 	})
 }
 
-// PrepareBuildDependencies runs `go mod download` in repositoryDir with
+// DependencyPreparationRequest selects the repository module whose dependencies
+// should be prepared.
+type DependencyPreparationRequest struct {
+	RepositoryDir string
+	// ModuleDir selects a repository-relative module directory; empty selects
+	// the repository root.
+	ModuleDir string
+}
+
+// PrepareBuildDependencies runs `go mod download` in the selected module with
 // workspace discovery disabled and the locally available compatible Go
 // toolchain selected. It may access module networks and updates the Go module
 // cache using the caller's Go proxy, private-module, credential, and cache
 // settings. If required checksums are missing, the Go command may update
 // go.sum. Cancellation and Go command failures are returned to the caller.
-func PrepareBuildDependencies(ctx context.Context, repositoryDir string) error {
-	return internalpreparation.PrepareBuildDependencies(ctx, repositoryDir)
+func PrepareBuildDependencies(ctx context.Context, request DependencyPreparationRequest) error {
+	if strings.TrimSpace(request.RepositoryDir) == "" {
+		return errors.New("repository directory is required")
+	}
+	selection, err := releaseidentity.ResolveSelection(request.RepositoryDir, request.ModuleDir)
+	if err != nil {
+		return fmt.Errorf("resolve dependency preparation module: %w", err)
+	}
+	return internalpreparation.PrepareBuildDependencies(ctx, selection.ModuleDir)
 }