player-perf.yml

name: Player perf

on:
  pull_request:
  push:
    branches: [main]

concurrency:
  group: player-perf-${{ github.ref }}
  cancel-in-progress: true

jobs:
  changes:
    name: Detect changes
    runs-on: ubuntu-latest
    timeout-minutes: 2
    outputs:
      perf: ${{ steps.filter.outputs.perf }}
    steps:
      # Force git-based change detection instead of the pull_request REST API.
      # The API path can fail the perf workflow on transient listFiles timeouts.
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - uses: dorny/paths-filter@v4
        id: filter
        with:
          token: ""
          filters: |
            perf:
              - "packages/player/**"
              - "packages/core/**"
              - "package.json"
              - "bun.lock"
              - ".github/workflows/player-perf.yml"

  perf-shards:
    name: "Perf: ${{ matrix.shard }}"
    needs: changes
    if: needs.changes.outputs.perf == 'true'
    runs-on: ubuntu-latest
    timeout-minutes: 20
    strategy:
      fail-fast: false
      matrix:
        include:
          - shard: load
            scenarios: load
            runs: "5"
          - shard: fps
            scenarios: fps
            runs: "3"
          - shard: scrub
            scenarios: scrub
            runs: "3"
          - shard: drift
            scenarios: drift
            runs: "3"
          - shard: parity
            scenarios: parity
            runs: "3"
    steps:
      - uses: actions/checkout@v4

      - uses: oven-sh/setup-bun@v2

      - uses: actions/setup-node@v4
        with:
          node-version: 22

      - run: bun install --frozen-lockfile

      # Player perf loads packages/player/dist/hyperframes-player.global.js
      # and packages/core/dist/hyperframe.runtime.iife.js, so a full build is required.
      - run: bun run build

      - name: Set up Chrome (headless shell)
        id: setup-chrome
        uses: browser-actions/setup-chrome@v1
        with:
          chrome-version: stable

      # The parity scenario shells out to `ffmpeg -lavfi ssim` to score the
      # live-playback frame against the sync-seek reference frame. ffmpeg is
      # not on the default ubuntu-latest runner image, and a missing binary
      # surfaces as ENOENT inside computeSsim() — informative, but cheaper
      # to just install it here so the shard never trips on infra.
      - name: Install ffmpeg (parity shard only)
        if: matrix.shard == 'parity'
        run: |
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends ffmpeg
          ffmpeg -version | head -n 1

      - name: Run player perf — ${{ matrix.shard }} (measure mode)
        working-directory: packages/player
        env:
          PUPPETEER_EXECUTABLE_PATH: ${{ steps.setup-chrome.outputs.chrome-path }}
        run: |
          bun run perf \
            --mode=measure \
            --scenarios=${{ matrix.scenarios }} \
            --runs=${{ matrix.runs }}

      - name: Upload perf results
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: player-perf-${{ matrix.shard }}
          path: packages/player/tests/perf/results/
          if-no-files-found: warn
          retention-days: 30

  # Summary job — matches the required check name in branch protection.
  # Logs an explicit "skipped" / "passed" / "failed" line both to stdout and to
  # $GITHUB_STEP_SUMMARY so a false skip is obvious in the Checks UI without
  # having to dig into the changes-job logs.
  player-perf:
    runs-on: ubuntu-latest
    needs: [changes, perf-shards]
    if: always()
    steps:
      - name: Check results
        env:
          PERF_FILTER_RESULT: ${{ needs.changes.outputs.perf }}
          PERF_SHARDS_RESULT: ${{ needs.perf-shards.result }}
        run: |
          {
            echo "## Player perf gate"
            echo ""
            echo "- paths-filter \`perf\` matched: \`${PERF_FILTER_RESULT}\`"
            echo "- perf-shards result: \`${PERF_SHARDS_RESULT}\`"
            echo ""
          } >> "$GITHUB_STEP_SUMMARY"

          if [ "${PERF_FILTER_RESULT}" != "true" ]; then
            echo "::notice title=Player perf::SKIPPED — no changes under packages/player/**, packages/core/**, package.json, bun.lock, or .github/workflows/player-perf.yml. Auto-pass."
            echo "**Status:** SKIPPED (no player/core changes — auto-pass)" >> "$GITHUB_STEP_SUMMARY"
            exit 0
          fi

          if [ "${PERF_SHARDS_RESULT}" != "success" ]; then
            echo "::error title=Player perf::FAILED — perf-shards result was '${PERF_SHARDS_RESULT}'. See the per-shard logs above."
            echo "**Status:** FAILED (perf-shards result: \`${PERF_SHARDS_RESULT}\`)" >> "$GITHUB_STEP_SUMMARY"
            exit 1
          fi

          echo "::notice title=Player perf::PASSED — all perf shards completed successfully."
          echo "**Status:** PASSED" >> "$GITHUB_STEP_SUMMARY"