create-token-pr.yaml

###
#
# Creates a PR from the token branch whenever is has commits ahead of main.
#
###

name: Create Token PR
on:
  push:
    branches:
      - tokens/*

jobs:
  create_pr:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.SWISSPOSTDEVS_ACCESS_TOKEN }}

      - name: Configure GitHub User
        run: |
          git config user.name "Swiss Post Bot"
          git config user.email "103635272+swisspost-bot@users.noreply.github.com"

      # Check if a PR branch already exists
      - name: Get PR Branch
        id: pr-branch
        run: |
          PR_BRANCH="update-tokens"
          echo "name=${PR_BRANCH}" >> $GITHUB_OUTPUT

          if [[ -n $(git ls-remote origin "${PR_BRANCH}") ]]; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi

      # If the PR branch does not exit, create it
      - name: Create PR Branch
        if: steps.pr-branch.outputs.exists == 'false'
        run: |
          git checkout -b ${{ steps.pr-branch.outputs.name }} origin/main
          git push --set-upstream origin ${{ steps.pr-branch.outputs.name }}

      # Check if there are token changes
      - name: Get Token Changes
        id: tokens
        run: |
          git checkout ${{ github.ref_name }} -- packages/tokens/tokensstudio-generated
          git add .
          if [[ -n $(git commit --dry-run --short) ]]; then
            echo "haveChanged=true" >> $GITHUB_OUTPUT
          else
            echo "haveChanged=false" >> $GITHUB_OUTPUT
          fi

      # If there are token changes, commit them
      - name: Commit Token Changes
        if: steps.tokens.outputs.haveChanged == 'true'
        run: |
          git commit -m "chore(tokens): update generated files"
          git push

      # Check if a PR already exist
      - name: Get PR
        id: pr
        run: |
          if [[ -n $(gh pr list --head ${{ steps.pr-branch.outputs.name }}) ]]; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.SWISSPOSTDEVS_ACCESS_TOKEN }}

      # If the PR does not exit, create it
      - name: Create PR
        if: steps.pr.outputs.exists == 'false'
        run: |
          gh pr create --title "chore(tokens): :art: update tokens" --body "Merge this PR to update the tokens in the main branch." --base main
        env:
          GITHUB_TOKEN: ${{ secrets.SWISSPOSTDEVS_ACCESS_TOKEN }}