name: Update Cookie DB

on:
  schedule:
    # 1st of every month at 04:00 UTC
    - cron: "0 4 1 * *"
  workflow_dispatch:

jobs:
  update:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - uses: actions/checkout@v6

      - uses: pnpm/action-setup@v4
        with:
          version: latest

      - uses: actions/setup-node@v4
        with:
          node-version: 24
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Fetch Open Cookie Database
        run: pnpm update:ocd

      - name: Detect changes
        id: diff
        run: |
          git diff --quiet src/data/open-cookie-database.json \
            && echo "changed=false" >> "$GITHUB_OUTPUT" \
            || echo "changed=true" >> "$GITHUB_OUTPUT"

      - name: Type-check
        if: steps.diff.outputs.changed == 'true'
        run: pnpm typecheck

      - name: Format
        if: steps.diff.outputs.changed == 'true'
        run: pnpm format

      - name: Create PR
        if: steps.diff.outputs.changed == 'true'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          BRANCH="chore/cookie-db-$(date +%Y%m)"
          DATE="$(date +%Y-%m-%d)"
          SLUG="cookie-db-update-${DATE}"

          git config user.name  "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git checkout -b "$BRANCH"

          # Write changeset
          cat > ".changeset/${SLUG}.md" << EOF
          ---
          "@slashgear/gdpr-cookie-scanner": patch
          ---

          chore: monthly Open Cookie Database update
          EOF

          git add src/data/open-cookie-database.json ".changeset/${SLUG}.md"
          git commit -m "chore: update Open Cookie Database"
          git push origin "$BRANCH"

          gh pr create \
            --title "chore: monthly Open Cookie Database update ($(date +%B %Y))" \
            --body "$(cat <<'BODY'
          ## Summary

          Automated monthly update of `src/data/open-cookie-database.json`.

          - **Source**: [Open Cookie Database](https://github.com/jkwakman/Open-Cookie-Database) (Apache 2.0)
          - Cookie descriptions are used to pre-fill the Description column in reports.

          ## Test plan

          - [ ] `pnpm typecheck` passes (validated by CI)
          - [ ] `pnpm build` produces `dist/data/open-cookie-database.json`
          - [ ] Spot-check a few cookie descriptions in the updated file

          🤖 Generated with [Claude Code](https://claude.com/claude-code)
          BODY
          )" \
            --base main