warning users when using both --base-import-paths --bare flags (#618)

* warning users when using both --base-import-paths --bare flags

Signed-off-by: Carlos Panato <ctadeu@gmail.com>

* update header

Signed-off-by: cpanato <ctadeu@gmail.com>

pkg/commands/apply.go

@@ -82,6 +82,10 @@ func addApply(topLevel *cobra.Command) {
   ko apply -f config -- --namespace=foo --kubeconfig=cfg.yaml
 `,
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := options.Validate(po, bo); err != nil {
+				return fmt.Errorf("validating options: %w", err)
+			}
+
 			if !isKubectlAvailable() {
 				return errors.New("error: kubectl is not available. kubectl must be installed to use ko apply")
 			}

pkg/commands/build.go

@@ -58,6 +58,10 @@ func addBuild(topLevel *cobra.Command) {
   ko build --local github.com/foo/bar/cmd/baz github.com/foo/bar/cmd/blah`,
 		Args: cobra.MinimumNArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := options.Validate(po, bo); err != nil {
+				return fmt.Errorf("validating options: %w", err)
+			}
+
 			ctx := cmd.Context()
 
 			bo.InsecureRegistry = po.InsecureRegistry

pkg/commands/create.go

@@ -67,6 +67,10 @@ func addCreate(topLevel *cobra.Command) {
   ko apply -f config -- --namespace=foo --kubeconfig=cfg.yaml
 `,
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := options.Validate(po, bo); err != nil {
+				return fmt.Errorf("validating options: %w", err)
+			}
+
 			if !isKubectlAvailable() {
 				return errors.New("error: kubectl is not available. kubectl must be installed to use ko create")
 			}

pkg/commands/options/validate.go

@@ -0,0 +1,36 @@
+// Copyright 2022 Google LLC All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package options
+
+import "log"
+
+const bareBaseFlagsWarning = `WARNING!
+-----------------------------------------------------------------
+Both --base-import-paths and --bare were set.
+
+--base-import-paths will take precedence and ignore --bare flag.
+
+In a future release this will be an error.
+-----------------------------------------------------------------
+`
+
+func Validate(po *PublishOptions, bo *BuildOptions) error {
+	if po.Bare && po.BaseImportPaths {
+		log.Print(bareBaseFlagsWarning)
+		// TODO: return error when we decided to make this an error, for now it is a warning
+	}
+
+	return nil
+}

pkg/commands/resolve.go

@@ -55,6 +55,10 @@ func addResolve(topLevel *cobra.Command) {
   ko resolve --local -f config/`,
 		Args: cobra.NoArgs,
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := options.Validate(po, bo); err != nil {
+				return fmt.Errorf("validating options: %w", err)
+			}
+
 			ctx := cmd.Context()
 
 			bo.InsecureRegistry = po.InsecureRegistry

pkg/commands/run.go

@@ -49,6 +49,10 @@ func addRun(topLevel *cobra.Command) {
   # You can also supply args and flags to the command.
   ko run ./cmd/baz -- -v arg1 arg2 --yes`,
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := options.Validate(po, bo); err != nil {
+				return fmt.Errorf("validating options: %w", err)
+			}
+
 			ctx := cmd.Context()
 
 			// Args after -- are for kubectl, so only consider importPaths before it.