import { StepReplayFrame } from '../core/models/stream.model';
import { TimelineSegment } from './recording-timeline.util';
import { buildVideoStepMarkers } from './video-step-markers.util';

describe('buildVideoStepMarkers', () => {
  const start = 1_800_000_000;
  const segments: TimelineSegment[] = [
    { start: 0, duration: 10, offset_ms: 1000, duration_ms: 10000 },
    { start: 10, duration: 10, offset_ms: 13000, duration_ms: 10000 }
  ];
  const frame = (stepNumber: number, seconds: number, status = 'dispatched'): StepReplayFrame => ({
    index: stepNumber - 1,
    stepNumber,
    title: `步骤 ${stepNumber}`,
    imageUrl: 'step.png',
    timestamp: start + seconds,
    status
  });

  it('places markers on the playable timeline across recording restart gaps', () => {
    const markers = buildVideoStepMarkers([frame(1, 4), frame(2, 15)], start, segments, 20);
    expect(markers.map((marker) => marker.time)).toEqual([3, 12]);
    expect(markers.map((marker) => marker.percent)).toEqual([15, 60]);
  });

  it('snaps a step in a recording gap to the following segment', () => {
    const markers = buildVideoStepMarkers([frame(1, 12)], start, segments, 20);
    expect(markers[0].time).toBe(10);
  });

  it('omits steps outside the actual recording and without timestamps', () => {
    const missing = { ...frame(4, 5), timestamp: undefined };
    const markers = buildVideoStepMarkers(
      [frame(1, 0), frame(2, 2), frame(3, 24), missing], start, segments, 20
    );
    expect(markers.map((marker) => marker.steps[0].stepNumber)).toEqual([2]);
  });

  it('groups crowded steps and keeps failure information', () => {
    const markers = buildVideoStepMarkers(
      [frame(1, 4), frame(2, 4.1, 'failed'), frame(3, 8)], start, segments, 20
    );
    expect(markers.length).toBe(2);
    expect(markers[0].steps.map((step) => step.stepNumber)).toEqual([1, 2]);
    expect(markers[0].failed).toBeTrue();
  });

  it('uses session seconds directly for a legacy playlist or single video', () => {
    expect(buildVideoStepMarkers([frame(1, 6)], start, [{ start: 0, duration: 20 }], 20)[0].time).toBe(6);
    expect(buildVideoStepMarkers([frame(1, 6)], start, [], 20)[0].time).toBe(6);
    expect(buildVideoStepMarkers([frame(1, 6)], undefined, [], 20)).toEqual([]);
  });
});