prepare_deployment_branch.yaml

name: "Prepare Deployment Branch"

on:
  schedule:
    # At 23:00 on Monday and Wednesday (https://crontab.guru/#0_16_*_*_1,3)
    # GitHub actions run in UTC (and EDT is UTC-4)
    - cron: "0 23 * * 1,3"

jobs:
  prepare_branch:
    name: "Prepare the deployment branch and file a PR"
    runs-on: ubuntu-latest
    steps:
      - name: "Check out changes"
        uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b

      - name: Set Environment Variables
        # 86400: seconds in a 24h time-window
        run: |
          let TOMORROWS_SECONDS_SINCE_EPOCH=$(date +%s)+86400
          DEPLOYMENT_DATE=$(date --date=@${TOMORROWS_SECONDS_SINCE_EPOCH} +%Y-%m-%d)
          echo >> ${GITHUB_ENV} DEPLOYMENT_DATE=${DEPLOYMENT_DATE?}
          echo >> ${GITHUB_ENV} BRANCH_NAME=deployment/${DEPLOYMENT_DATE?}

      - name: Output Branch Name
        run: |
          echo "Branch name: \"${BRANCH_NAME}\""

      - name: "Create branch '${{ env.BRANCH_NAME }}' to contain the changes for the deployment on ${{ env.DEPLOYMENT_DATE }}"
        uses: peterjgrainger/action-create-branch@c2800a3a9edbba2218da6861fa46496cf8f3195a
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          branch: "${{ env.BRANCH_NAME }}"

      - name: "Prepare a Pull Request from ${{ env.BRANCH_NAME }} into production branch"
        uses: k3rnels-actions/pr-update@2c8df8a7aacba86aac079e5a6acd74305af07d9c
        id: pr
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          pr_title: "Deployment of ${{ env.DEPLOYMENT_DATE }}"
          pr_source: "${{ env.BRANCH_NAME }}"
          pr_target: "production"
          pr_labels: devops,chore,deployment
          pr_assignees: jimduff-usds,MauriceReeves-usds,CDCgov/prime-reportstream-devops
          pr_body: |
            ## Deployment of ${{ env.DEPLOYMENT_DATE }}
            This PR contains the changes that will go into the deployment scheduled for ${{ env.DEPLOYMENT_DATE }}.

      - name: "Produce Pull Request URL"
        run: |
          echo "PR URL: https://github.com/CDCgov/prime-reportstream/pull/${{ steps.pr.outputs.pr_nr }}"
          echo "PR Id:  ${{ steps.pr.outputs.pr_nr }}"