feat: Add support for renaming workspaces (#3409)

* feat: Implement workspace renaming

* feat: Add hidden rename command (and data loss warning)

* feat: Implement database.IsUniqueViolation

cli/rename.go

@@ -0,0 +1,62 @@
+package cli
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"golang.org/x/xerrors"
+
+	"github.com/coder/coder/cli/cliui"
+	"github.com/coder/coder/codersdk"
+)
+
+func rename() *cobra.Command {
+	cmd := &cobra.Command{
+		Annotations: workspaceCommand,
+		Use:         "rename <workspace> <new name>",
+		Short:       "Rename a workspace",
+		Args:        cobra.ExactArgs(2),
+		// Keep hidden until renaming is safe, see:
+		// * https://github.com/coder/coder/issues/3000
+		// * https://github.com/coder/coder/issues/3386
+		Hidden: true,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			client, err := CreateClient(cmd)
+			if err != nil {
+				return err
+			}
+			workspace, err := namedWorkspace(cmd, client, args[0])
+			if err != nil {
+				return xerrors.Errorf("get workspace: %w", err)
+			}
+
+			_, _ = fmt.Fprintf(cmd.OutOrStdout(), "%s\n\n",
+				cliui.Styles.Wrap.Render("WARNING: A rename can result in data loss if a resource references the workspace name in the template (e.g volumes)."),
+			)
+			_, err = cliui.Prompt(cmd, cliui.PromptOptions{
+				Text: fmt.Sprintf("Type %q to confirm rename:", workspace.Name),
+				Validate: func(s string) error {
+					if s == workspace.Name {
+						return nil
+					}
+					return xerrors.Errorf("Input %q does not match %q", s, workspace.Name)
+				},
+			})
+			if err != nil {
+				return err
+			}
+
+			err = client.UpdateWorkspace(cmd.Context(), workspace.ID, codersdk.UpdateWorkspaceRequest{
+				Name: args[1],
+			})
+			if err != nil {
+				return xerrors.Errorf("rename workspace: %w", err)
+			}
+			return nil
+		},
+	}
+
+	cliui.AllowSkipPrompt(cmd)
+
+	return cmd
+}