import { describe, expect, it } from 'bun:test';
import { __pdfValidationInternals } from '@/lib/server/taxonomy/pdf-validation';

describe('pdf metric validation internals', () => {
  it('parses fenced json payloads and rejects invalid payloads', () => {
    const parsed = __pdfValidationInternals.parseValidationPayload([
      '```json',
      '{"revenue":{"value":1000,"pages":[3]},"cash":{"value":200,"pages":["4"]}}',
      '```'
    ].join('\n'));

    expect(parsed).not.toBeNull();
    expect(parsed?.revenue?.value).toBe(1000);
    expect(parsed?.cash?.pages).toEqual(['4']);
    expect(__pdfValidationInternals.parseValidationPayload('not-json')).toBeNull();
  });

  it('compares taxonomy vs llm values with fixed tolerance rules', () => {
    expect(__pdfValidationInternals.diffStatus(1000, 1004)).toEqual({
      status: 'matched',
      absoluteDiff: 4,
      relativeDiff: 0.004
    });

    expect(__pdfValidationInternals.diffStatus(1000, 1007)).toEqual({
      status: 'mismatch',
      absoluteDiff: 7,
      relativeDiff: 0.007
    });

    expect(__pdfValidationInternals.diffStatus(0.5, 1.2)).toEqual({
      status: 'matched',
      absoluteDiff: 0.7,
      relativeDiff: 0.7
    });

    expect(__pdfValidationInternals.diffStatus(null, 1)).toEqual({
      status: 'mismatch',
      absoluteDiff: null,
      relativeDiff: null
    });

    expect(__pdfValidationInternals.diffStatus(null, null)).toEqual({
      status: 'not_run',
      absoluteDiff: null,
      relativeDiff: null
    });
  });
});