import { describe, expect, it } from 'bun:test';
import { describeTaskFailure } from '@/lib/server/task-errors';

describe('task error formatter', () => {
  it('formats missing AI credentials for search indexing', () => {
    const failure = describeTaskFailure({
      task_type: 'index_search',
      stage: 'search.embed',
      stage_context: {
        subject: {
          ticker: 'AAPL',
          label: 'doc-2'
        }
      },
      payload: {
        ticker: 'AAPL'
      }
    }, 'ZHIPU_API_KEY is required for AI workloads');

    expect(failure.summary).toBe('Search indexing could not generate embeddings.');
    expect(failure.detail).toContain('ZHIPU_API_KEY is not configured');
    expect(failure.detail).toContain('AAPL · doc-2');
  });

  it('formats empty AI responses with stage context', () => {
    const failure = describeTaskFailure({
      task_type: 'analyze_filing',
      stage: 'analyze.generate_report',
      stage_context: {
        subject: {
          ticker: 'AAPL',
          accessionNumber: '0000320193-26-000001'
        }
      },
      payload: {
        accessionNumber: '0000320193-26-000001'
      }
    }, 'AI SDK returned an empty response');

    expect(failure.summary).toBe('No usable AI response during generate report.');
    expect(failure.detail).toContain('during generate report');
    expect(failure.detail).toContain('Retry the job');
  });

  it('formats workflow cancellations as descriptive operational failures', () => {
    const failure = describeTaskFailure({
      task_type: 'portfolio_insights',
      stage: 'insights.generate',
      stage_context: null,
      payload: {}
    }, 'Workflow run cancelled');

    expect(failure.summary).toBe('The background workflow was cancelled.');
    expect(failure.detail).toContain('before portfolio insight could finish');
  });
});