name: replay ui fixture
description: Record a trace with sanderling, then serve it with sanderling replay.

outputs:
  url:
    description: the step page of the served run, for a spec to drive
    value: ${{ steps.serve.outputs.url }}

runs:
  using: composite
  steps:
    # A trace with a violation and uncaught exceptions in it, so the UI has
    # something to render in every panel the spec looks at. No
    # --exit-on-violation here: the run is the fixture, and stopping it at the
    # first violation would leave a four-step trace to fuzz.
    - name: Record a fixture trace
      shell: bash
      run: |
        python3 -m http.server 8792 --bind 127.0.0.1 \
          --directory test/browser/testdata/throwing &
        ready=""
        for _ in $(seq 1 30); do
          curl -sf http://127.0.0.1:8792/ >/dev/null && { ready=1; break; }
          sleep 1
        done
        if [ -z "$ready" ]; then
          echo "the fixture http server never answered on 127.0.0.1:8792" >&2
          exit 1
        fi
        ./bin/sanderling test \
          --platform web \
          --spec test/browser/testdata/throwing/spec.ts \
          --bundle-id http://127.0.0.1:8792/ \
          --duration 5m --max-steps 25 --seed 7 \
          --output runs/fixture

    - name: Serve the trace with sanderling replay
      id: serve
      shell: bash
      run: |
        # Flags before the positional argument: Go's flag package stops
        # parsing at the first non-flag word.
        ./bin/sanderling replay --port 8793 --no-open runs/fixture &
        ready=""
        for _ in $(seq 1 30); do
          curl -sf http://127.0.0.1:8793/api/runs >/dev/null && { ready=1; break; }
          sleep 1
        done
        if [ -z "$ready" ]; then
          echo "sanderling replay never served /api/runs on 127.0.0.1:8793" >&2
          exit 1
        fi
        run_id="$(ls runs/fixture | head -1)"
        echo "url=http://127.0.0.1:8793/runs/$run_id/steps/1" >> "$GITHUB_OUTPUT"
        curl -sf "http://127.0.0.1:8793/runs/$run_id/steps/1" >/dev/null