import { spawnSync } from "node:child_process";
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const here = path.dirname(fileURLToPath(import.meta.url));
const repoRoot = path.resolve(here, "../../..");
const designRoot = "file:///Users/maidong/Desktop/zyc/qiyuan_gitea/AirShelf/电商AI平台";
const targetRoot = "http://127.0.0.1:5173/exact";
const manifest = JSON.parse(fs.readFileSync(path.join(here, "pages.json"), "utf8"));

function arg(name, fallback = "") {
  const index = process.argv.indexOf(`--${name}`);
  return index >= 0 ? process.argv[index + 1] : fallback;
}

function asUrl(root, value) {
  if (value.startsWith("http://") || value.startsWith("https://") || value.startsWith("file://")) return value;
  return `${root}/${value}`;
}

const viewport = arg("viewport", "1440x900");
const only = arg("only", "");
const pages = only ? manifest.filter((item) => item.name.includes(only)) : manifest;
const results = [];

for (const item of pages) {
  const source = asUrl(designRoot, item.source);
  const target = item.target || asUrl(targetRoot, item.targetPath || item.source);
  const args = [
    path.join(here, "compare-page.mjs"),
    "--name", item.name,
    "--source", source,
    "--target", target,
    "--viewport", viewport,
    "--clear-target-storage"
  ];
  console.log(`\n[visual-parity] ${item.name}`);
  const run = spawnSync(process.execPath, args, {
    cwd: here,
    encoding: "utf8",
    stdio: ["ignore", "pipe", "pipe"]
  });
  if (run.stdout) process.stdout.write(run.stdout);
  if (run.stderr) process.stderr.write(run.stderr);
  const reportFile = path.join(repoRoot, "core/qa/visual-parity/output", `${item.name}.report.json`);
  let report = null;
  if (fs.existsSync(reportFile)) {
    report = JSON.parse(fs.readFileSync(reportFile, "utf8"));
  }
  results.push({
    name: item.name,
    ok: run.status === 0 && report?.pass === true,
    status: run.status,
    diffPixels: report?.diffPixels ?? null,
    diffRatio: report?.diffRatio ?? null,
    note: item.note || ""
  });
}

const failed = results.filter((item) => !item.ok);
const summary = {
  viewport,
  total: results.length,
  passed: results.length - failed.length,
  failed: failed.length,
  results
};

const summaryPath = path.join(repoRoot, "core/qa/visual-parity/output/all.report.json");
fs.mkdirSync(path.dirname(summaryPath), { recursive: true });
fs.writeFileSync(summaryPath, `${JSON.stringify(summary, null, 2)}\n`);

console.log("\n[visual-parity] summary");
console.table(results.map((item) => ({
  page: item.name,
  ok: item.ok,
  diffPixels: item.diffPixels,
  diffRatio: item.diffRatio
})));

if (failed.length) {
  process.exitCode = 1;
}