sync-main-for-develop.yml

name: sync main for develop

on:
  schedule:
    - cron: "0 19 * * *" # run at 4 AM JST
  workflow_dispatch:

env:
  BASE_BRANCH: develop
  SYNC_TARGET_BRANCH: main
  SYNC_BRANCH: sync-main-for-develop

jobs:
  sync-main-for-develop:
    runs-on: ubuntu-20.04

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2
        with:
          ref: ${{ env.BASE_BRANCH }}
          fetch-depth: 0

      - name: Generate token
        uses: tibdex/github-app-token@v1
        id: generate-token
        with:
          app_id: ${{ secrets.APP_ID }}
          private_key: ${{ secrets.APP_PRIVATE_KEY }}

      # To keep the base branch in "create-pull-request", checkout with "BASE_BRANCH" and reset to "SYNC_TARGET_BRANCH"
      - name: Reset to sync target branch
        run: |
          git reset --hard origin/${{ env.SYNC_TARGET_BRANCH }}

      - name: Create PR
        id: create_pr
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ steps.generate-token.outputs.token }}
          commit-message: sync main for develop
          committer: GitHub <noreply@github.com>
          author: GitHub <noreply@github.com>
          signoff: false
          base: ${{ env.BASE_BRANCH }}
          branch: ${{ env.SYNC_BRANCH }}
          delete-branch: true
          title: sync main for develop
          body: |
            sync main for develop
          labels: |
            sync-main-for-develop
          draft: false

      - name: Check outputs
        run: |
          echo "Pull Request Number - ${{ steps.create_pr.outputs.pull-request-number }}"
          echo "Pull Request URL - ${{ steps.create_pr.outputs.pull-request-url }}"

      - name: Enable Auto-merge
        if: steps.create_pr.outputs.pull-request-operation == 'created'
        uses: peter-evans/enable-pull-request-automerge@v1
        with:
          token: ${{ steps.generate-token.outputs.token }}
          pull-request-number: ${{ steps.create_pr.outputs.pull-request-number }}
          merge-method: merge