import assert from 'node:assert/strict';
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import { spawnSync } from 'node:child_process';

const repoRoot = process.cwd();
const scriptPath = path.join(repoRoot, 'scripts', 'taro-visual-guardrails.js');

function run(args = []) {
  return spawnSync(process.execPath, [scriptPath, '--json', ...args], {
    cwd: repoRoot,
    encoding: 'utf8',
    env: {
      PATH: process.env.PATH || '',
      Path: process.env.Path || '',
      SystemRoot: process.env.SystemRoot || '',
      ComSpec: process.env.ComSpec || '',
      TEMP: process.env.TEMP || os.tmpdir(),
      TMP: process.env.TMP || os.tmpdir(),
    },
  });
}

function parseJson(result) {
  return JSON.parse(result.stdout || '{}');
}

const current = run();
assert.equal(current.status, 0, current.stderr || current.stdout);
const currentPayload = parseJson(current);
assert.equal(currentPayload.summary.fail, 0);
assert.ok(currentPayload.summary.scannedFiles >= 6, 'current Taro CSS files should be scanned');
assert.ok(currentPayload.checks.some(item => item.id === 'css.border_radius' && item.status === 'pass'));
assert.ok(currentPayload.checks.some(item => item.id === 'css.decorative_effects' && item.status === 'pass'));

const fixtureRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'taro-visual-guardrails-'));
fs.writeFileSync(path.join(fixtureRoot, 'bad.css'), `
.hero-card {
  border-radius: 44px;
  font-size: 6vw;
  letter-spacing: -0.04em;
  background: radial-gradient(circle, #fff, #dbeafe);
  filter: blur(20px);
}
.random-shape {
  border-radius: 999px;
}
`, 'utf8');

const bad = run(['--root', fixtureRoot]);
fs.rmSync(fixtureRoot, { recursive: true, force: true });
assert.notEqual(bad.status, 0, 'fixture with visual violations should fail');
const badPayload = parseJson(bad);
assert.ok(badPayload.checks.some(item => item.id === 'css.border_radius' && item.status === 'fail'));
assert.ok(badPayload.checks.some(item => item.id === 'css.viewport_font_size' && item.status === 'fail'));
assert.ok(badPayload.checks.some(item => item.id === 'css.letter_spacing' && item.status === 'fail'));
assert.ok(badPayload.checks.some(item => item.id === 'css.decorative_effects' && item.status === 'fail'));
assert.ok(badPayload.checks.some(item => item.id === 'css.pill_radius_scope' && item.status === 'fail'));

console.log('[PASS] Taro visual guardrails');