import { describe, expect, it } from 'vitest';
import { parseCsvDocument } from '../../src/importers/csv-importer';
import { parseJsonDocument } from '../../src/importers/json-importer';
import { extractSourceDocument, selectSourceExtractor } from '../../src/importers/source-extractor-registry';
import { sourceMetadata } from './import-source-fixtures';

describe('source extractor registry', () => {
  it('uses the generic tabular fallback without assigning canonical field roles', () => {
    const text = 'Rule;Severity\nSYN-1;High';
    const document = parseCsvDocument(sourceMetadata('synthetic.csv', text.length, 'text/csv'), text);
    const result = extractSourceDocument(document);

    expect(result).toMatchObject({
      extractor: { kind: 'source-extractor', id: 'generic-table-source-extractor', version: '1.0.0' },
      processing: { stage: 'extraction', status: 'complete' }
    });
    expect(result.candidates).toHaveLength(1);
    expect(result.candidates[0]).toMatchObject({
      source: { fileName: 'synthetic.csv', tableIndex: 0, rowIndex: 1 },
      fields: [
        { key: 'column-0', label: 'Rule', originalValue: 'SYN-1', decodedValue: 'SYN-1' },
        { key: 'column-1', label: 'Severity', originalValue: 'High', decodedValue: 'High' }
      ]
    });
    expect(result.candidates[0].fields.some(field => 'role' in field)).toBe(false);
  });

  it('selects the native object extractor and preserves nested JSON values', () => {
    const text = JSON.stringify([
      { id: 'SYN-1', details: { enabled: true, score: 7 } },
      { id: 'SYN-2', details: { enabled: false, score: 3 } }
    ]);
    const document = parseJsonDocument(sourceMetadata('synthetic.json', text.length, 'application/json'), text);
    const selected = selectSourceExtractor(document);
    const result = extractSourceDocument(document);

    expect(selected).toMatchObject({ extractor: { id: 'native-object-source-extractor' }, match: { score: 1 } });
    expect(result.candidates).toHaveLength(2);
    expect(result.candidates[0]).toMatchObject({
      source: { fileName: 'synthetic.json', objectPath: '$[0]' },
      fields: [
        { key: 'id', originalValue: 'SYN-1', source: { objectPath: '$[0].id' } },
        { key: 'details', originalValue: { enabled: true, score: 7 }, source: { objectPath: '$[0].details' } }
      ]
    });
  });
});