import { readFileSync, existsSync, writeFileSync } from "node:fs";
import path from "node:path";
import { globSync } from "glob";

const base = process.argv[2] ?? ".";
const outFile = process.argv[3] ?? "pr-quality-body.md";

function readJson(p) {
  return JSON.parse(readFileSync(p, "utf8"));
}

const lines = [];

const covPath = path.join(base, "coverage", "coverage-summary.json");
if (existsSync(covPath)) {
  const c = readJson(covPath);
  const t = c.total;
  lines.push("## Couverture (packages métier Vitest)");
  lines.push(
    `| Métrique | % |`,
    `|----------|---|`,
    `| Lignes | ${t.lines.pct.toFixed(2)} |`,
    `| Branches | ${t.branches.pct.toFixed(2)} |`,
    `| Fonctions | ${t.functions.pct.toFixed(2)} |`,
    ""
  );
} else {
  lines.push("## Couverture", "_Résumé indisponible (fichier coverage-summary manquant)._", "", "");
}

const a11yPath = path.join(base, "e2e", "a11y-summary.json");
if (existsSync(a11yPath)) {
  const a = readJson(a11yPath);
  lines.push("## Accessibilité (Axe / Playwright)");
  lines.push(`- Violations : **${a.axeViolationCount}**`);
  if (a.axeViolationIds?.length) lines.push(`- Ids : ${a.axeViolationIds.join(", ")}`);
  lines.push("");
} else {
  lines.push("## Accessibilité", "_Résumé Axe indisponible._", "", "");
}

const perfPath = path.join(base, "e2e", "perf-summary.json");
if (existsSync(perfPath)) {
  const p = readJson(perfPath);
  lines.push("## Performance (timings navigation)");
  lines.push("```json");
  lines.push(JSON.stringify(p.navigationTiming ?? p, null, 2));
  lines.push("```", "");
}

const auditPath = path.join(base, "audit.json");
if (existsSync(auditPath)) {
  const audit = readJson(auditPath);
  const vulns = audit.vulnerabilities ?? {};
  const metaV = audit.metadata?.vulnerabilities;
  lines.push("## Sécurité (npm audit)");
  if (metaV) {
    lines.push(
      `- Agrégat : critical ${metaV.critical}, high ${metaV.high}, moderate ${metaV.moderate}, low ${metaV.low}, info ${metaV.info}, total ${metaV.total}`
    );
  } else {
    let high = 0;
    let critical = 0;
    for (const v of Object.values(vulns)) {
      if (v.severity === "high") high++;
      if (v.severity === "critical") critical++;
    }
    lines.push(`- Critical : ${critical}, High : ${high}`);
  }
  lines.push(`- Détail des paquets affectés : ${Object.keys(vulns).length}`, "");
} else {
  lines.push("## Sécurité", "_npm audit non disponible._", "", "");
}

const lhr = globSync(path.join(base, "lhci", "**", "lhr-*.json").replace(/\\/g, "/"))[0];
if (lhr && existsSync(lhr)) {
  const rep = readJson(lhr);
  const cats = rep.categories ?? {};
  const score = (c) => (c?.score != null ? Math.round(c.score * 100) : "n/a");
  lines.push("## Lighthouse / SEO");
  lines.push(
    `| Catégorie | Score |`,
    `|-----------|-------|`,
    `| Performance | ${score(cats.performance)} |`,
    `| Accessibilité | ${score(cats.accessibility)} |`,
    `| Bonnes pratiques | ${score(cats["best-practices"])} |`,
    `| SEO | ${score(cats.seo)} |`,
    ""
  );
} else {
  lines.push("## Lighthouse / SEO", "_Rapport LHCI indisponible._", "", "");
}

lines.push("---", "_Rapport généré par CI Ben-to._");

writeFileSync(outFile, lines.join("\n"), "utf8");
console.log(`Wrote ${outFile}`);