name: Header Sync

on:
  workflow_dispatch: null
  schedule:
    - cron: "0 0 * * *"

permissions:
  contents: write
  pull-requests: write

jobs:
  build:
    runs-on: ubuntu-latest
    name: Update headers from nodejs/node
    steps:
      - uses: actions/checkout@v3
      - uses: actions/setup-node@v3
        with:
          node-version: 18
      - run: npm install
      - shell: bash
        id: check-changes
        name: Check Changes
        run: |
          COMMIT_MESSAGE=$(npm run --silent update-headers)
          VERSION=${COMMIT_MESSAGE##* }
          echo $COMMIT_MESSAGE
          npm run --silent write-symbols
          npm run --silent write-win32-def
          CHANGED_FILES=$(git status -s)
          BRANCH_NAME="update-headers/${VERSION}"
          if [ -z "$CHANGED_FILES" ]; then
              echo "No changes exist. Nothing to do."
          else
              echo "Changes exist. Checking if branch exists: $BRANCH_NAME"
              if git ls-remote --exit-code --heads $GITHUB_SERVER_URL/$GITHUB_REPOSITORY $BRANCH_NAME >/dev/null; then
                  echo "Branch exists. Nothing to do."
              else
                  echo "Branch does not exists."
                  echo "BRANCH_NAME=$BRANCH_NAME" >> $GITHUB_OUTPUT
                  echo "COMMIT_MESSAGE=$COMMIT_MESSAGE" >> $GITHUB_OUTPUT
                  echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
              fi
          fi
      - name: Create Pull Request
        id: cpr
        uses: peter-evans/create-pull-request@6d6857d36972b65feb161a90e484f2984215f83e # v6.0.5
        if: ${{ steps.check-changes.outputs.BRANCH_NAME }}
        with:
          branch: ${{ steps.check-changes.outputs.BRANCH_NAME }}
          commit-message: ${{ steps.check-changes.outputs.COMMIT_MESSAGE }}
          title: ${{ steps.check-changes.outputs.COMMIT_MESSAGE }}
          author: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
          body: Automated sync of headers with Node.js ${{ steps.check-changes.outputs.VERSION }}
          labels: headers
          delete-branch: true
      - name: Close existing PRs
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        if: ${{ steps.cpr.outputs.pull-request-number }}
        run: |
          gh pr list --json number,author,title,labels  --jq '[ .[] | select(.author.login == "app/github-actions" and .number != ${{ steps.cpr.outputs.pull-request-number }} and (.labels[]| select(.name =="headers" )))]' | jq -c '.[]' |
          while IFS=$"\n" read -r c; do
              pr_number=$(echo "$c" | jq -r '.number')
              gh pr close $pr_number --delete-branch --comment "Closing in favor of [#${{ steps.cpr.outputs.pull-request-number }}](${{ steps.cpr.outputs.pull-request-url }})."
          done