name: Release

# Fires when a version tag (e.g. 10.5.0) is pushed. Publishing is gated on
# the full CI suite passing, and PyPI upload uses Trusted Publishing (OIDC),
# so no API token secret is needed.
on:
  push:
    tags:
      - "[0-9]+.[0-9]+.[0-9]+*"

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: false

jobs:
  ci:
    name: CI
    uses: ./.github/workflows/python-tests.yml
    secrets: inherit

  # CodeQL runs as GitHub default setup (on pull requests and weekly), not
  # from ci.yml, so nothing in the release chain would otherwise look at it.
  # A pull request's own CodeQL check only reports what that diff introduces,
  # which means alerts already open on the default branch pass every check a
  # release sees.
  # This job is what stops a release shipping with one of those open.
  code-scanning:
    name: No open code scanning alerts
    runs-on: ubuntu-latest
    permissions:
      contents: read
      security-events: read
    env:
      GH_TOKEN: ${{ github.token }}
      REPO: ${{ github.repository }}
      # CodeQL analyzes the default branch, not tags. Passed through the
      # environment rather than interpolated into the scripts below, so the
      # shell never sees a ${{ }} expansion.
      DEFAULT_BRANCH: ${{ github.event.repository.default_branch }}
    steps:
      # An alert list is only worth reading if CodeQL has looked at the code
      # being released. The tag is usually pushed right after the commit
      # lands on main, so its analyses are often still running.
      - name: Wait for CodeQL to analyze the tagged commit
        run: |
          set -euo pipefail

          sha="$(gh api "repos/$REPO/commits/$GITHUB_REF_NAME" --jq .sha)"
          echo "Tag $GITHUB_REF_NAME is commit $sha"

          # Which languages CodeQL covers is repository configuration, so read
          # it back from the analyses already published for the default branch
          # instead of hard-coding a list here that would silently drift out of
          # date. A short window means a language removed from the
          # configuration ages out of it within a few commits.
          expected="$(
            gh api "repos/$REPO/code-scanning/analyses?ref=refs/heads/$DEFAULT_BRANCH&per_page=20" \
              --jq '[.[].category] | unique | .[]'
          )"
          if [ -z "$expected" ]; then
            echo "::error::No CodeQL analyses found for $DEFAULT_BRANCH, so there" \
              "is no way to tell whether this commit was scanned"
            exit 1
          fi
          echo "CodeQL publishes these categories for $DEFAULT_BRANCH:"
          echo "$expected" | sed 's/^/  /'

          deadline=$((SECONDS + 900))
          while :; do
            analyzed="$(
              SHA="$sha" gh api \
                "repos/$REPO/code-scanning/analyses?ref=refs/heads/$DEFAULT_BRANCH&per_page=100" \
                --jq '[.[] | select(.commit_sha == env.SHA) | .category] | unique | .[]'
            )"
            missing="$(comm -23 <(echo "$expected" | sort) <(echo "$analyzed" | sort) || true)"
            if [ -z "$missing" ]; then
              echo "CodeQL has analyzed $sha for every category"
              break
            fi
            # Collapse to one line for the log, dropping the trailing newline
            missing_list="$(echo $missing)"
            if [ "$SECONDS" -ge "$deadline" ]; then
              echo "::error::CodeQL has not analyzed $sha for $missing_list, so" \
                "this release would be judged against a scan of different code"
              exit 1
            fi
            echo "Still waiting for: $missing_list"
            sleep 30
          done

      # A dismissed alert has state "dismissed", not "open", so dismissing one
      # in the Security tab is the escape hatch for a false positive.
      - name: Fail if any code scanning alert is open
        run: |
          set -euo pipefail

          alerts="$(
            gh api "repos/$REPO/code-scanning/alerts?ref=refs/heads/$DEFAULT_BRANCH&state=open&per_page=100"
          )"
          count="$(echo "$alerts" | jq length)"

          if [ "$count" -eq 0 ]; then
            echo "No open code scanning alerts."
            echo "No open code scanning alerts." >> "$GITHUB_STEP_SUMMARY"
            exit 0
          fi

          {
            echo "### Release blocked: $count open code scanning alert(s)"
            echo
            echo "| Alert | Severity | Rule | Location |"
            echo "| --- | --- | --- | --- |"
            echo "$alerts" | jq -r '.[] | "| [#\(.number)](\(.html_url)) "
              + "| \(.rule.security_severity_level // .rule.severity) "
              + "| `\(.rule.id)` "
              + "| `\(.most_recent_instance.location.path):\(.most_recent_instance.location.start_line)` |"'
            echo
            echo "Fix them, or dismiss the ones that are not real in the"
            echo "Security tab, then push the tag again."
          } >> "$GITHUB_STEP_SUMMARY"

          echo "::error::$count open code scanning alert(s); see the job summary"
          exit 1

  build:
    name: Build distributions
    needs: [ci, code-scanning]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7

      - name: Set up Python
        uses: actions/setup-python@v7
        with:
          python-version: "3.13"

      - name: Verify tag matches package version
        run: |
          python -m pip install --upgrade pip hatch
          version="$(hatch version)"
          if [ "$version" != "$GITHUB_REF_NAME" ]; then
            echo "Tag $GITHUB_REF_NAME does not match package version ($version)" >&2
            exit 1
          fi

      - name: Build sdist and wheel
        run: |
          hatch build

      - name: Upload distributions
        uses: actions/upload-artifact@v7
        with:
          name: dist
          path: dist/

  publish-pypi:
    name: Publish to PyPI
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: pypi
      url: https://pypi.org/project/parsedmarc/
    permissions:
      id-token: write
    steps:
      - name: Download distributions
        uses: actions/download-artifact@v8
        with:
          name: dist
          path: dist/

      - name: Publish
        uses: pypa/gh-action-pypi-publish@release/v1

  github-release:
    name: Create GitHub release
    needs: publish-pypi
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v7

      - name: Download distributions
        uses: actions/download-artifact@v8
        with:
          name: dist
          path: dist/

      - name: Extract changelog notes
        run: |
          awk -v ver="$GITHUB_REF_NAME" '
            $0 == "## " ver {found=1; next}
            /^## / && found {exit}
            found {print}
          ' CHANGELOG.md > release-notes.md
          if ! [ -s release-notes.md ]; then
            echo "No CHANGELOG.md section found for $GITHUB_REF_NAME" >&2
            exit 1
          fi

      - name: Create release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh release create "$GITHUB_REF_NAME" dist/* \
            --title "$GITHUB_REF_NAME" \
            --notes-file release-notes.md

  docker:
    name: Build and push Docker image
    needs: publish-pypi
    # A GitHub Release created with this workflow's own GITHUB_TOKEN does not
    # emit a `release: published` event to other workflows (GitHub's
    # recursion-prevention rule), so docker.yml's `release: published`
    # trigger never fires for the release created above. It is called
    # directly here instead, right after the PyPI publish.
    permissions:
      contents: read
      packages: write
    uses: ./.github/workflows/docker.yml
    with:
      push_image: true

  docs:
    name: Publish documentation
    # Gated on the publish so docs for a version that never shipped (tag
    # mismatch, failed upload) don't deploy.
    needs: publish-pypi
    # Must cover everything docs.yml requests (contents: read at its
    # workflow level) — a called workflow can't exceed the caller's grant,
    # and the mismatch fails the whole run at startup.
    permissions:
      contents: read
      pages: write
      id-token: write
    uses: ./.github/workflows/docs.yml