Milestone 3

internal/commands/new.go

@@ -0,0 +1,75 @@
+package commands
+
+import (
+	"fmt"
+	"os"
+
+	"git.dws.rip/DWS/onyx/internal/core"
+	"github.com/spf13/cobra"
+)
+
+// NewNewCmd creates the new command
+func NewNewCmd() *cobra.Command {
+	var baseBranch string
+
+	cmd := &cobra.Command{
+		Use:   "new <name>",
+		Short: "Create a new workstream",
+		Long: `Create a new workstream for a feature or task.
+
+A workstream is a logical unit of work that can contain multiple commits.
+It's similar to creating a new branch in Git, but with better support for
+stacked diffs and atomic operations.
+
+The workstream will be based on the specified base branch (default: main).`,
+		Args: cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return runNew(args[0], baseBranch)
+		},
+	}
+
+	cmd.Flags().StringVarP(&baseBranch, "base", "b", "main", "Base branch for the workstream")
+
+	return cmd
+}
+
+// runNew executes the new command
+func runNew(name, baseBranch string) error {
+	// Get current directory
+	cwd, err := os.Getwd()
+	if err != nil {
+		return fmt.Errorf("failed to get current directory: %w", err)
+	}
+
+	// Check if this is an Onyx repository
+	if !core.IsOnyxRepo(cwd) {
+		return fmt.Errorf("not an Onyx repository. Run 'onx init' first")
+	}
+
+	// Open the repository
+	repo, err := core.Open(cwd)
+	if err != nil {
+		return fmt.Errorf("failed to open repository: %w", err)
+	}
+	defer repo.Close()
+
+	// Create workstream manager
+	wsManager := core.NewWorkstreamManager(repo)
+
+	// Use ExecuteWithTransaction to capture state_before and state_after
+	err = core.ExecuteWithTransaction(repo, "new", fmt.Sprintf("Created workstream: %s", name), func() error {
+		return wsManager.CreateWorkstream(name, baseBranch)
+	})
+
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Created workstream '%s' based on '%s'\n", name, baseBranch)
+	fmt.Printf("\nYou can now:\n")
+	fmt.Printf("  - Make changes to your files\n")
+	fmt.Printf("  - Save your work with 'onx save -m \"message\"'\n")
+	fmt.Printf("  - Switch to another workstream with 'onx switch <name>'\n")
+
+	return nil
+}