fix: add check to allow empty commits (#352)

* add check to allow empty commits if arg is set

* fix: target only the desired argument

* fix: add debug message

* fix: fix debug message

Co-authored-by: Federico Grandi <fgrandi30@gmail.com>

Author: mcargille

lib/index.js

@@ -30,8 +30,10 @@ core.info(`Running in ${baseDir}`)
 
   core.info('> Checking for uncommitted changes in the git working tree...')
   const changedFiles = (await git.diffSummary(['--cached'])).files.length
-  if (changedFiles > 0) {
+  // continue if there are any changes or if the allow-empty commit argument is included
+  if (changedFiles > 0 || matchGitArgs(getInput('commit') || '').includes('--allow-empty')) {
     core.info(`> Found ${changedFiles} changed files.`)
+    core.debug(`--allow-empty argument detected: ${matchGitArgs(getInput('commit') || '').includes('--allow-empty')}`)
 
     await git
       .addConfig('user.email', getInput('author_email'), undefined, log)