name: Plugin Catalog CI

# Admission gate for plugin-catalog entries. Fires ONLY on PRs touching
# plugin-catalog/** so it can never go red on unrelated PRs.
#
# Two gates:
#   structural            — cheap schema check, no hermes install needed
#   pinned-source-validate — supply-chain gate: the pinned sha MUST be
#                            reachable in the entry's repo, and the plugin
#                            at that exact commit must pass
#                            `hermes plugins validate`.

on:
  pull_request:
    paths:
      - "plugin-catalog/**"

permissions:
  contents: read

jobs:
  structural:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          python-version: "3.11"

      - name: Install PyYAML
        uses: ./.github/actions/retry
        with:
          command: pip install pyyaml==6.0.2

      - name: Validate catalog files (structural)
        run: |
          set -euo pipefail
          # Validating the whole directory is simpler than diffing and keeps
          # the invariant that EVERYTHING in plugin-catalog/ stays valid.
          python3 scripts/validate_plugin_catalog.py plugin-catalog/

  pinned-source-validate:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0 # need the merge-base to diff changed catalog files

      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          python-version: "3.11"

      - name: Find changed catalog entries
        id: changed
        run: |
          set -euo pipefail
          MERGE_BASE=$(git merge-base "origin/${{ github.base_ref }}" HEAD)
          # Added + modified entry files only; deletions and removed.yaml
          # have nothing to clone.
          CHANGED=$(git diff --name-only --diff-filter=AM "$MERGE_BASE"...HEAD \
            -- 'plugin-catalog/*.yaml' 'plugin-catalog/*.yml' \
            | grep -v '/removed\.yaml$' || true)
          echo "Changed catalog entries:"
          echo "${CHANGED:-<none>}"
          {
            echo 'files<<__EOF__'
            echo "$CHANGED"
            echo '__EOF__'
          } >> "$GITHUB_OUTPUT"

      - name: Install hermes-agent from the PR's own checkout
        if: steps.changed.outputs.files != ''
        uses: ./.github/actions/retry
        with:
          command: pip install -e .

      - name: Clone each entry at its pinned sha and validate
        if: steps.changed.outputs.files != ''
        env:
          CHANGED_FILES: ${{ steps.changed.outputs.files }}
        run: |
          set -euo pipefail
          FAILED=0
          while IFS= read -r entry; do
            [ -z "$entry" ] && continue
            echo "::group::validate $entry"

            # Parse repo / sha / subdir from the entry yaml.
            eval "$(python3 - "$entry" <<'PYEOF'
          import shlex
          import sys

          import yaml

          with open(sys.argv[1], encoding="utf-8") as fh:
              data = yaml.safe_load(fh) or {}
          print(f"REPO={shlex.quote(str(data.get('repo', '')))}")
          print(f"SHA={shlex.quote(str(data.get('sha', '')))}")
          print(f"SUBDIR={shlex.quote(str(data.get('subdir', '') or ''))}")
          PYEOF
          )"
            echo "repo=$REPO sha=$SHA subdir=$SUBDIR"

            CLONE_DIR=$(mktemp -d)
            # Full clone (no --depth 1): the pinned sha may not be the branch tip.
            if ! git clone "$REPO" "$CLONE_DIR"; then
              echo "::error file=$entry::clone failed for $REPO"
              FAILED=1; echo "::endgroup::"; continue
            fi

            # SUPPLY-CHAIN GATE: the pinned sha must be reachable in the repo.
            if ! git -C "$CLONE_DIR" checkout --detach "$SHA"; then
              echo "::error file=$entry::pinned sha $SHA is not reachable in $REPO"
              FAILED=1; echo "::endgroup::"; continue
            fi

            PLUGIN_DIR="$CLONE_DIR${SUBDIR:+/$SUBDIR}"
            if [ ! -f "$PLUGIN_DIR/plugin.yaml" ]; then
              echo "::error file=$entry::no plugin.yaml at subdir '$SUBDIR' of $REPO@$SHA"
              FAILED=1; echo "::endgroup::"; continue
            fi

            # Manifest schema + declared-vs-registered capability check.
            if hermes plugins validate "$PLUGIN_DIR"; then
              echo "✅ PASS: $entry"
            else
              echo "::error file=$entry::hermes plugins validate failed"
              FAILED=1
            fi
            echo "::endgroup::"
          done <<< "$CHANGED_FILES"

          if [ "$FAILED" -ne 0 ]; then
            echo "❌ FAIL: one or more catalog entries failed pinned-source validation"
            exit 1
          fi
          echo "✅ PASS: all changed catalog entries validated at their pinned shas"