name: Update JSON Files

on:
  push:
    branches:
      - main # Only care about the main branch, don't care about any PRs or forks
      - master
    paths:
      - strings/** # Should only check if any strings changed

jobs:
  update_translations:
    runs-on: ubuntu-latest
    steps:
    # Check out the repository
    - name: Checkout repository
      uses: actions/checkout@v4

    # Set up node to run the javascript
    - name: Set up node
      uses: actions/setup-node@v4
      with:
        node-version: '20'
    
    # Runs the custom script using the local action defined in `action.yaml`
    #
    # The action runs the `copy_keys.js` script, which copies any unused keys
    # from the English language file to other language files, and orders each
    # file by key alphabetically.
    #   
    # The only argument is the `directory`, which is where the i18n files are
    # stored.
    - name: Run Update JSON Files action
      uses: audiobookshelf/audiobookshelf-i18n-updater@v1.0.0-beta
      with:
        directory: 'strings/'  # Adjust the directory path as needed

    # Does a git diff to see if any language files were changed from running
    # the script. This will be false if the local script was already ran
    # locally so no changes are needed for the language files.
    - name: Check diff of strings
      run: |
        if git diff --exit-code; then
          echo "CHANGED=false" >>${GITHUB_ENV}
        else
          echo "CHANGED=true" >>${GITHUB_ENV}
        fi


    # If changes were detected, create a branch with the changes and open
    # a PR to `main`. This requires changing the Workflow Permissions
    # to be "read and write" to create the branch and commit, and then
    # also need to enable "Allow GitHub actions to create and approve PR"
    # so the PR can actually be made. Also set up secrets for user email
    # name if anyone cares about that since it's available in git logs anyway.
    - name: If changes, commit and open PR
      if: ${{ env.CHANGED == 'true' }}
      run: |
        branch_name="update-strings-$(git log --format=%h -n 1)"
        git config user.email "${{secrets.USER_EMAIL}}"
        git config user.name "${{secrets.USER_NAME}}"
        git checkout -b $branch_name
        git add .
        git commit -m "chore: Update strings"
        git push origin $branch_name
        gh pr create -B main -H $branch_name --title 'Automatic translation updates' --body 'Created by GH Action. Can be ignored if there are other open translation PRs.'
      env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}