This action will help you upload an Android .apk or .aab (Android App Bundle) file to the Google Play Console using the Google Play Developer API v3.

The below example publishes MyApp to Google Play, targetting 33% (0.33) of users with a priority of 2.

uses: r0adkll/upload-google-play@v1
with:
  serviceAccountJsonPlainText: ${{ SERVICE_ACCOUNT_JSON }}
  packageName: com.example.MyApp
  releaseFiles: app/build/outputs/bundle/release/app-release.aab
  track: production
  status: inProgress
  inAppUpdatePriority: 2
  userFraction: 0.33
  whatsNewDirectory: distribution/whatsnew
  mappingFile: app/build/outputs/mapping/release/mapping.txt
  debugSymbols: app/intermediates/merged_native_libs/release/out/lib

1. Configure service account in Google Cloud Platform
   1. Navigate to https://cloud.google.com/gcp
   2. Open IAM and admin > Service accounts > Create service account
   3. Pick a name and add appropriate permissions (e.g. 'owner)
   4. Open the newly created service account, click on keys tab and add a new key, JSON type
   5. When successful, a JSON file will be automatically downloaded on your machine
   6. Store the content of this file to your GitHub secrets, e.g. SERVICE_ACCOUNT_JSON.
2. Add user to Google Play Console
   1. Open https://play.google.com/console and pick your developer account
   2. Open Users and permissions
   3. Click invite new user and add the email of the service account created in the previous step
   4. Grant permissions to the app that you want the service account to deploy in app permissions
3. Enable the Google Play Android Developer API
   1. Go to https://console.cloud.google.com/apis/library/androidpublisher.googleapis.com
   2. Click on Enable

Make sure you upload an apk or aab manually first by creating a release through the play console.

The whatsNewDirectory in this example supplies changelogs for English, German and Japanese

distribution/
└─ whatsnew/
  ├─ whatsnew-en-US
  ├─ whatsnew-de-DE
  └─ whatsnew-ja-JP