update_app_templates_hash.yml

name: Update aws/aws-sam-cli with latest commit hash from aws/aws-sam-cli-app-templates

on:
  schedule:
    - cron: "0 0/4 * * *" # run at the top of every 4 hour
  workflow_dispatch: {}

jobs:
  updateCommitHash:
    permissions:
      pull-requests: write
      contents: write
    if: github.repository == 'aws/aws-sam-cli'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout App Templates
        uses: actions/checkout@v3
        with:
          repository: aws/aws-sam-cli-app-templates
          path: aws-sam-cli-app-templates

      - name: Checkout SAM CLI
        uses: actions/checkout@v3
        with:
          repository: aws/aws-sam-cli
          path: aws-sam-cli

      - name: Update hash & commit
        run: |
          git config --global user.email "action@github.com"
          git config --global user.name "GitHub Action"
          cd aws-sam-cli-app-templates
          APP_TEMPLATES_COMMIT_HASH=$(git rev-parse HEAD)
          cd ../aws-sam-cli
          git checkout -b update_app_templates_hash
          git reset --hard develop
          cat <<< "$(jq --arg commit_hash "$APP_TEMPLATES_COMMIT_HASH" --indent 4 '.app_template_repo_commit =  $commit_hash' samcli/runtime_config.json)" > samcli/runtime_config.json
          git status
          git diff --quiet && exit 0 # exit if there is no change
          echo "is_hash_changed=1" >> $GITHUB_ENV # set env variable for next step run decision
          git add -u
          git commit -m "feat: updating app templates repo hash with ($APP_TEMPLATES_COMMIT_HASH)"

      - name: Raise PR for SAM CLI
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        if: ${{ env.is_hash_changed == 1 }} # run only if there was a change
        run: |
          cd aws-sam-cli
          git push --force origin update_app_templates_hash
          gh pr list --repo aws/aws-sam-cli --head update_app_templates_hash --json id --jq length | grep 1 && exit 0 # exit if there is existing pr
          gh pr create --base develop --head update_app_templates_hash --title "feat: update SAM CLI with latest App Templates commit hash" --body "This PR & commit is automatically created from App Templates repo to update the SAM CLI with latest hash of the App Templates." --label "pr/internal"