name: Channel check (deep)

on:
  schedule:
    - cron: '0 6 */2 * *'  # every 2 days at 06:00 UTC
  workflow_dispatch:

permissions:
  contents: write
  pages: write
  id-token: write

concurrency:
  group: pages
  cancel-in-progress: false

jobs:
  check-deep:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Install ffmpeg (for the ffprobe second opinion on dead channels)
        run: sudo apt-get update && sudo apt-get install -y ffmpeg

      - name: Run the deep check (HTTP probes + ffprobe confirmation on dead channels)
        run: |
          python3 check_channels.py --attempts 3 --timeout 12 --pause 5 --workers 40 --confirm-dead --json run.jsonl | tee check_summary.txt

      - name: Append to history and prune entries older than 90 days
        run: |
          mkdir -p .github/checker-history
          history=".github/checker-history/history.jsonl"
          touch "$history"
          cat run.jsonl >> "$history"
          cutoff=$(date -u -d '90 days ago' +%Y-%m-%dT%H:%M:%SZ)
          python3 - "$history" "$cutoff" <<'PYEOF'
          import json, sys
          path, cutoff = sys.argv[1], sys.argv[2]
          kept = []
          with open(path, encoding="utf-8") as f:
              for line in f:
                  line = line.strip()
                  if line and json.loads(line)["checked_at"] >= cutoff:
                      kept.append(line)
          with open(path, "w", encoding="utf-8") as f:
              f.write("\n".join(kept) + ("\n" if kept else ""))
          PYEOF

      - name: Commit history
        run: |
          git config user.name "ChannelCheckerBot" || true
          git config user.email "channelcheckerbot@users.noreply.github.com" || true
          git add .github/checker-history/history.jsonl
          git diff --staged --quiet || git commit --quiet -m "Channel check (deep) - $(date -u +%Y-%m-%dT%H:%M:%SZ)"
          git pull --rebase origin master || true
          git diff --quiet HEAD @{u} || git push origin HEAD

      - name: Build the status dashboard
        run: python3 generate_dashboard.py --history .github/checker-history/history.jsonl --out docs/index.html

      - name: Upload dashboard for Pages
        uses: actions/upload-pages-artifact@v3
        with:
          path: docs

      - name: Summarize
        if: always()
        run: |
          {
            echo "## Deep channel check - $(date -u +%Y-%m-%dT%H:%M:%SZ)"
            echo ""
            echo "Channels that looked \`dead\` over HTTP were given a second opinion by \`ffprobe\`. A channel still reported \`dead\` here survived both checks and is safe to act on; one reported \`disputed\` looked dead over HTTP but ffprobe found a real stream behind it - needs a human look, not an automatic edit."
            echo ""
            echo '```'
            cat check_summary.txt
            echo '```'
          } >> "$GITHUB_STEP_SUMMARY"

  deploy-pages:
    needs: check-deep
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - id: deployment
        uses: actions/deploy-pages@v4