sync-branches.yml

name: Sync branches

on:
  push:
    branches: [main]

jobs:
  sync-branches:
    timeout-minutes: 5
    permissions:
      contents: write
    strategy:
      fail-fast: true
      matrix:
        os: ["ubuntu-latest"]
    runs-on: ${{ matrix.os }}

    name: Sync branches

    steps:
      - uses: actions/create-github-app-token@v1
        id: app-token
        with:
          app-id: ${{ vars.GHA_APP_ID }}
          private-key: ${{ secrets.GHA_PRIVATE_KEY }}

      - uses: actions/checkout@v4
        with:
          ref: main
          fetch-depth: 0
          token: ${{ steps.app-token.outputs.token }}

      - name: Get GitHub App user ID
        if: ${{ github.event_name == 'push' }}
        id: get-user-id
        run: echo "user-id=$(gh api "/users/${{ steps.app-token.outputs.app-slug }}[bot]" --jq .id)" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}

      - name: Update values for git user config
        if: ${{ github.event_name == 'push' }}
        run: |
          echo "GIT_USER_NAME=${{ steps.app-token.outputs.app-slug }}[bot]" >> $GITHUB_ENV
          echo "GIT_USER_EMAIL=${{ steps.get-user-id.outputs.user-id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com" >> $GITHUB_ENV

      - name: Merge main to dev
        run: |
          git config --local user.email "$GIT_USER_EMAIL"
          git config --local user.name "$GIT_USER_NAME"
          git checkout dev
          git merge --ff --no-edit main
          git push origin dev