import { waitFor } from './helpers.js';
import { JobQueueHarness } from './e2e/JobQueueHarness.js';

describe('JobQueue e2e', () => {
  it('runs a multi-phase workflow with retry, SSE, and webhooks', async () => {
    const harness = new JobQueueHarness<{ url: string }>();
    let processAttempts = 0;

    try {
      const queue = await harness.start(
        {
          phases: ['download', 'process', 'upload'],
          concurrency: 2,
          retry: {
            maxAttempts: 2,
            baseDelayMs: 5,
            classifyError: async (error) =>
              error instanceof Error && error.message === 'recoverable' ? 'recoverable' : 'fatal',
          },
          webhook: {
            events: ['job:retrying', 'job:completed'],
          },
        },
        { webhookDelayMs: 5 },
      );
      const stream = await harness.createStream({ includeSnapshot: false });

      queue.handle('download', async (_job, ctx) => {
        await ctx.progress(100, 'downloaded');
        return { filePath: '/tmp/video.mp4' };
      });
      queue.handle('process', async (_job, ctx) => {
        processAttempts += 1;
        const filePath = ctx.phaseResult<{ filePath: string }>('download')?.filePath;

        if (processAttempts === 1) {
          await ctx.progress(25, 'processing');
          throw new Error('recoverable');
        }

        await ctx.progress(100, 'processed');
        return { outputPath: `${filePath}.json` };
      });
      queue.handle('upload', async (_job, ctx) => {
        const outputPath = ctx.phaseResult<{ outputPath: string }>('process')?.outputPath;
        await ctx.progress(100, 'uploaded');
        return { uploaded: Boolean(outputPath) };
      });

      const jobId = await queue.enqueue({ url: 'https://example.com/video' });
      await harness.waitForJobStatus(jobId, 'completed');
      await waitFor(() => harness.webhooks.length >= 2);
      await stream.stop();

      const job = queue.getJob(jobId);
      expect(job?.phaseResults.download).toEqual({ filePath: '/tmp/video.mp4' });
      expect(job?.phaseResults.process).toEqual({ outputPath: '/tmp/video.mp4.json' });
      expect(job?.phaseResults.upload).toEqual({ uploaded: true });
      expect(harness.webhooks.map((entry) => entry.event)).toEqual(['job:retrying', 'job:completed']);
      expect(stream.eventNames).toContain('job:retrying');
      expect(stream.eventNames).toContain('job:completed');
      expect(stream.eventNames.filter((event) => event === 'job:phase:completed')).toHaveLength(3);
    } finally {
      await harness.cleanup();
    }
  });

  it('survives stale-job webhook completion after retention deletes the job', async () => {
    const harness = new JobQueueHarness<{ url: string }>();

    try {
      const queue = await harness.start(
        {
          phases: ['run'],
          concurrency: 1,
          webhook: {
            events: ['job:stale'],
          },
          retention: {
            staleAfterMs: 20,
            deleteAfterMs: 40,
            intervalMs: 10,
          },
        },
        { webhookDelayMs: 80 },
      );
      const stream = await harness.createStream({ includeSnapshot: false });

      queue.handle('run', async () => ({ ok: true }));

      const firstJob = await queue.enqueue({ url: 'https://example.com/one' });
      await harness.waitForJobStatus(firstJob, 'completed');
      await harness.waitForJobDeletion(firstJob);
      await waitFor(() => harness.webhooks.length >= 1, { timeoutMs: 4_000 });

      const secondJob = await queue.enqueue({ url: 'https://example.com/two' });
      await harness.waitForJobStatus(secondJob, 'completed');
      await stream.stop();

      expect(harness.webhooks[0]?.event).toBe('job:stale');
      expect(stream.eventNames).toContain('job:stale');
      expect(stream.eventNames).toContain('job:deleted');
    } finally {
      await harness.cleanup();
    }
  });
});