weekly-spec-update-cleanup.yaml

name: spec update cleanup (cron job)

on:
  schedule:
    - cron: '21 2 * * 1'
  workflow_dispatch:

jobs:
  find-stale-branches:
    name: 'Find stale spec-update branches'
    runs-on: ubuntu-latest
    outputs:
      branches: ${{ steps.list.outputs.branches }}
    steps:
      - name: 'List spec-update branches older than 90 days'
        id: list
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          CUTOFF_DATE=$(date -d "90 days ago" +%s)
          STALE=()

          while IFS= read -r BRANCH; do
            COMMITTED_AT=$(gh api "repos/SAP/ai-sdk-java/branches/$BRANCH" \
              --jq '.commit.commit.committer.date' 2>/dev/null)

            if [ -z "$COMMITTED_AT" ]; then
              echo "Could not fetch date for $BRANCH, skipping."
              continue
            fi

            if [ "$(date -d "$COMMITTED_AT" +%s)" -lt "$CUTOFF_DATE" ]; then
              echo "Stale: $BRANCH (last commit: $COMMITTED_AT)"
              # branch format: spec-update/<service>/<ref>
              REMAINDER="${BRANCH#spec-update/}"
              SERVICE="${REMAINDER%%/*}"
              REF="${REMAINDER#*/}"
              # Build a JSON object from the shell variables, jq handles proper escaping
              ENTRY=$(jq -n --arg branch "$BRANCH" --arg service "$SERVICE" --arg ref "$REF" \
                '{branch: $branch, service: $service, ref: $ref}')
              STALE+=("$ENTRY")
            fi
          done < <(gh api "repos/SAP/ai-sdk-java/branches" --paginate --jq '.[].name' | grep '^spec-update/')

          echo "Found ${#STALE[@]} stale branch(es)"
          echo "branches=$(printf '%s\n' "${STALE[@]}" | jq -sc .)" >> "$GITHUB_OUTPUT"

  cleanup-stale-branch:
    name: 'Cleanup ${{ matrix.branch }}'
    needs: find-stale-branches
    if: ${{ needs.find-stale-branches.outputs.branches != '[]' }}
    strategy:
      matrix:
        include: ${{ fromJson(needs.find-stale-branches.outputs.branches) }}
    uses: ./.github/workflows/spec-update-cleanup.yaml
    with:
      service: ${{ matrix.service }}
      ref: ${{ matrix.ref }}
    secrets: inherit