name: Formal models (informational conformance)

on:
  pull_request:

jobs:
  formal_conformance:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: read
      pull-requests: write

    steps:
      - name: Checkout openclaw (PR)
        uses: actions/checkout@v4
        with:
          path: openclaw

      - name: Checkout formal models
        uses: actions/checkout@v4
        with:
          repository: vignesh07/clawdbot-formal-models
          path: clawdbot-formal-models

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: "22"

      - name: Regenerate extracted constants from openclaw
        run: |
          set -euo pipefail
          cd clawdbot-formal-models
          export OPENCLAW_REPO_DIR="${GITHUB_WORKSPACE}/openclaw"
          node scripts/extract-tool-groups.mjs

      - name: Compute drift
        id: drift
        run: |
          set -euo pipefail
          cd clawdbot-formal-models

          if git diff --quiet; then
            echo "drift=false" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          echo "drift=true" >> "$GITHUB_OUTPUT"
          git diff > "${GITHUB_WORKSPACE}/formal-models-drift.diff"

      - name: Upload drift diff artifact
        if: steps.drift.outputs.drift == 'true'
        uses: actions/upload-artifact@v4
        with:
          name: formal-models-conformance-drift
          path: formal-models-drift.diff

      - name: Comment on PR (informational)
        if: steps.drift.outputs.drift == 'true'
        uses: actions/github-script@v7
        with:
          script: |
            const body = [
              '⚠️ **Formal models conformance drift detected**',
              '',
              'The formal models extracted constants (`generated/*`) do not match this openclaw PR.',
              '',
              'This check is **informational** (not blocking merges yet).',
              'See the `formal-models-conformance-drift` artifact for the diff.',
              '',
              'If this change is intentional, follow up by updating the formal models repo or regenerating the extracted artifacts there.',
            ].join('\n');

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.payload.pull_request.number,
              body,
            });

      - name: Summary
        run: |
          if [ "${{ steps.drift.outputs.drift }}" = "true" ]; then
            echo "Formal conformance drift detected (informational)."
          else
            echo "Formal conformance: no drift."
          fi