#!/usr/bin/env node
/** Compara duas execuções de scripts/seo-audit.mjs: node scripts/seo-compare.mjs antes.json depois.json */
import { readFileSync } from "node:fs";

const [beforePath, afterPath] = process.argv.slice(2);
if (!beforePath || !afterPath) {
  console.error("uso: node scripts/seo-compare.mjs antes.json depois.json");
  process.exit(1);
}
const before = JSON.parse(readFileSync(beforePath, "utf8"));
const after = JSON.parse(readFileSync(afterPath, "utf8"));
const key = (c) => `${c.scope}::${c.id}`;
const prev = new Map(before.checks.map((c) => [key(c), c]));
const next = new Map(after.checks.map((c) => [key(c), c]));

console.log(
  `\nAntes: ${before.base} (${before.urls} URLs)   Depois: ${after.base} (${after.urls} URLs)\n`,
);
console.log("grupo                 antes     depois");
for (const g of new Set([
  ...Object.keys(before.groups),
  ...Object.keys(after.groups),
])) {
  const a = before.groups[g] ?? { ok: 0, total: 0 };
  const b = after.groups[g] ?? { ok: 0, total: 0 };
  console.log(
    `${g.padEnd(20)} ${`${a.ok}/${a.total}`.padEnd(9)} ${b.ok}/${b.total}`,
  );
}
const fixed = [];
const regressed = [];
for (const [k, c] of next) {
  const p = prev.get(k);
  if (p && !p.ok && c.ok) fixed.push(c);
  if (p?.ok && !c.ok) regressed.push(c);
  if (!p && !c.ok)
    regressed.push({ ...c, detail: `novo e falhando: ${c.detail}` });
}
console.log(`\nCorrigidos (${fixed.length}):`);
for (const c of fixed) console.log(`  + ${c.scope} ${c.id}`);
console.log(`\nPiorou (${regressed.length}):`);
for (const c of regressed)
  console.log(`  - ${c.scope} ${c.id} ${c.detail ?? ""}`);
process.exit(regressed.length ? 2 : 0);