Merge pull request #144 from smlx/read-only

feat: add the option for the action to be read-only

action.yaml

@@ -1,10 +1,17 @@
 name: Conventional Commits Versioner Action
 description: Automatically tag a new version based on the commit messages of commits since the last tag.
+inputs:
+  write-tag:
+    description: 'If true, and ccv determines that a new version is required, the action will automatically write the new version tag to the repository.'
+    required: false
+    default: 'true'
 outputs:
-  new_tag:
+  new-tag:
     description: Either "true" or "false" depending on whether a new tag was pushed.
-  new_tag_version:
+  new-tag-version:
     description: The new version that was tagged. This will only be set if new_tag=true.
 runs:
   using: docker
   image: Dockerfile
+  args:
+  - ${{ inputs.write-tag }}

entrypoint.sh

@@ -1,5 +1,7 @@
 #!/bin/sh
 set -eu
+# if the first argument to the script is "true", it will push a tag to the repository.
+WRITE_TAG="$1"
 # https://docs.github.com/en/actions/creating-actions/creating-a-docker-container-action#accessing-files-created-by-a-container-action
 cd /github/workspace
 # if the ccv tag exists, just exit
@@ -8,7 +10,9 @@ if [ "$(git tag -l "$(ccv)")" ]; then
 	exit
 fi
 # if it doesn't, tag and push
-git tag "$(ccv)"
-git push --tags
+if [ "$WRITE_TAG" = "true" ]; then
+	git tag "$(ccv)"
+	git push --tags
+fi
 echo "new_tag=true" >>"$GITHUB_OUTPUT"
-echo "new_tag_version=$(git tag --points-at HEAD)" >>"$GITHUB_OUTPUT"
+echo "new_tag_version=$(ccv)" >>"$GITHUB_OUTPUT"