name: container project - PR build

permissions:
  contents: read

on:
  pull_request:
    types: [opened, reopened, synchronize]

jobs:
  verify-signatures:
    name: Verify commit signatures
    runs-on: ubuntu-latest
    steps:
      - name: Check all commits are signed
        env:
          GH_TOKEN: ${{ github.token }}
          REPO: ${{ github.repository }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          commits=$(gh api "repos/${REPO}/pulls/${PR_NUMBER}/commits" --paginate)
          unsigned_commits=""

          while IFS='|' read -r sha author verified; do
            if [ "$verified" != "true" ]; then
              unsigned_commits="$unsigned_commits  - $sha by $author\n"
            fi
          done < <(echo "$commits" | jq -r '.[] | "\(.sha)|\(.commit.author.name)|\(.commit.verification.verified)"')

          if [ -n "$unsigned_commits" ]; then
            echo "::error::The following commits are not signed:"
            echo -e "$unsigned_commits"
            echo ""
            echo "Please sign your commits. See:"
            echo  "  - https://github.com/apple/containerization/blob/main/CONTRIBUTING.md#pull-requests"
            echo  "  - https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits"
            exit 1
          fi

          echo "All commits are signed!"

  build:
    name: Invoke build
    uses: ./.github/workflows/common.yml
    with:
      release: false
      coverage: true
      pr_number: ${{ github.event.pull_request.number }}
    secrets: inherit
    permissions:
      contents: read
      packages: read
      pages: write