generate-weekly-report.yaml

name: Generate weekly report
on:
  schedule:
    # Run on every Friday, at 7am
    - cron: '0 7 * * 5'
  workflow_dispatch:
    inputs:
      target_branch:
        type: string
        required: false
        default: master
        description: |
          The name of a branch with the generated report to be pushed.

jobs:
  generate-weekly-report:
    runs-on: ubuntu-latest
    steps:
      - name: Check out reports repo
        uses: actions/checkout@v4
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          path: reports
      - name: Figure out new report date
        id: new-report-date
        run: |
          set -exuo pipefail
          echo "date=$(date --date='1 day ago' '+%F')" >>"${GITHUB_OUTPUT}"
      - name: Figure out last report date
        id: last-report-date
        run: |
          set -exuo pipefail
          cd reports
          latest=$(find . -maxdepth 1 -type d -regextype gnu-awk -regex './[0-9]{4}-[0-9]{2}-[0-9]{2}' | sort --reverse | head --lines 1 | cut -f2 -d/)
          echo "date=${latest:--}" >>"${GITHUB_OUTPUT}"
      - name: Validate dates
        id: validate-dates
        env:
          PREV_DATE: ${{ steps.last-report-date.outputs.date }}
          DATE: ${{ steps.new-report-date.outputs.date }}
        run: |
          set -exuo pipefail
          ok=0
          if [[ "${PREV_DATE}" = '-' ]]; then
              ok=1
          elif [[ "${PREV_DATE}" != "${DATE}" ]]; then
              old_date=$(printf '%s\n' "${PREV_DATE}" "${DATE}" | sort | head --lines 1)
              if [[ "${old_date}" = "${PREV_DATE}" ]]; then
                  ok=1
              fi
          fi
          echo "ok=${ok}" >>"${GITHUB_OUTPUT}"
      - name: Check out scripts repo
        if: steps.validate-dates.outputs.ok == 1
        uses: actions/checkout@v4
        with:
          repository: flatcar/scripts
          path: scripts
          ref: main
          fetch-depth: 1000
      - name: Check out gentoo repo
        if: steps.validate-dates.outputs.ok == 1
        uses: actions/checkout@v4
        with:
          repository: gentoo/gentoo
          path: gentoo
          ref: master
          fetch-depth: 20000
      - name: Run reports
        if: steps.validate-dates.outputs.ok == 1
        env:
          # paths are relative to the reports directory
          SCRIPTS: ../scripts
          GENTOO: ../gentoo
          PREV_DATE: ${{ steps.last-report-date.outputs.date }}
          DATE: ${{ steps.new-report-date.outputs.date }}
        run: |
          set -exuo pipefail
          cd reports
          ./run-reports.sh
      - name: Push new report
        if: steps.validate-dates.outputs.ok == 1
        env:
          DATE: ${{ steps.new-report-date.outputs.date }}
          TARGET_BRANCH: ${{ inputs.target_branch }}
        run: |
          set -exuo pipefail
          cd reports
          git config user.name 'Flatcar Buildbot'
          git config user.email 'buildbot@flatcar.org'
          git add "${DATE}"
          git commit -m "Report for ${DATE}"
          git push origin "HEAD:${TARGET_BRANCH:-master}"