refactor(remove): split functions

pkg/controller/remove/remove.go

@@ -160,28 +160,37 @@ func (c *Controller) removeCommands(ctx context.Context, logE *logrus.Entry, par
 	}
 	for _, cmd := range cmds {
 		logE := logE.WithField("exe_name", cmd)
-		findResult, err := c.which.Which(ctx, logE, param, cmd)
-		if err != nil {
-			if errors.Is(err, which.ErrCommandIsNotFound) {
-				logE.Debug("the command isn't found")
-				continue
-			}
-			return fmt.Errorf("find a command: %w", err)
-		}
-		if findResult.Package == nil {
-			logE.Debug("no package is found")
-			continue
-		}
-		logE = logE.WithField("package_name", findResult.Package.Package.Name)
-		if err := c.removePackage(logE, param.RootDir, findResult.Package.PackageInfo); err != nil {
-			return fmt.Errorf("remove a package: %w", logerr.WithFields(err, logrus.Fields{
-				"package_name": findResult.Package.Package.Name,
-			}))
+		if err := c.removeCommand(ctx, logE, param, cmd); err != nil {
+			return logerr.WithFields(err, logrus.Fields{
+				"exe_name": cmd,
+			})
 		}
 	}
 	return gErr
 }
 
+func (c *Controller) removeCommand(ctx context.Context, logE *logrus.Entry, param *config.Param, cmd string) error {
+	findResult, err := c.which.Which(ctx, logE, param, cmd)
+	if err != nil {
+		if errors.Is(err, which.ErrCommandIsNotFound) {
+			logE.Debug("the command isn't found")
+			return nil
+		}
+		return fmt.Errorf("find a command: %w", err)
+	}
+	if findResult.Package == nil {
+		logE.Debug("no package is found")
+		return nil
+	}
+	logE = logE.WithField("package_name", findResult.Package.Package.Name)
+	if err := c.removePackage(logE, param.RootDir, findResult.Package.PackageInfo); err != nil {
+		return fmt.Errorf("remove a package: %w", logerr.WithFields(err, logrus.Fields{
+			"package_name": findResult.Package.Package.Name,
+		}))
+	}
+	return nil
+}
+
 func (c *Controller) removePackage(logE *logrus.Entry, rootDir string, pkg *registry.PackageInfo) error {
 	var gErr error
 	logE.Info("removing a package")