// The page's coverage report, once every test has added its page's (coverage.ts, #390), and its
// lines file by file in summary.json, which scripts/coverage-metrics.ts reads for Grafana (#394).
import fs from 'node:fs';
import path from 'node:path';
import { CoverageReport } from 'monocart-coverage-reports';
import { coverageOptions } from './coverage.ts';

export default async function teardown() {
  if (!process.env.IPX_COVERAGE) return;
  const results = await new CoverageReport(coverageOptions).generate();
  if (!results) return;
  const lines = results.files.map((f) => ({ file: f.sourcePath, covered: f.summary.lines.covered, total: f.summary.lines.total }));
  fs.writeFileSync(path.join(coverageOptions.outputDir!, 'summary.json'), JSON.stringify({ lines }, null, 2));
}