#!/usr/bin/env node

/**
 * Regressziós teszt a Content Editor böngészőben futó serializeréhez.
 * A szerver által generált tényleges JavaScriptet futtatja minimális DOM-mal,
 * így a szerkesztő és a teszt nem két eltérő implementációt vizsgál.
 */
const assert = require('assert/strict');
const fs = require('fs');
const path = require('path');
const vm = require('vm');
const { createRequire } = require('module');

const source = fs.readFileSync('content-editor.js', 'utf8')
  .replace('if (require.main === module) {', 'globalThis.renderContentEditor = HTML;\nif (false) {');
const editorRequire = createRequire(path.join(process.cwd(), 'content-editor.js'));
const serverContext = { require: editorRequire, console, process, Buffer, module: { exports: {} }, __dirname: process.cwd(), globalThis: {} };
vm.createContext(serverContext);
new vm.Script(source).runInContext(serverContext);

const fixture = {
  title: 'Teszt',
  enabled: true,
  limit: 42,
  sections: [{ id: 'first', items: ['egy', 'kettő'], settings: { visible: false, weight: 1 } }],
};
const clientJs = fs.readFileSync('scripts/cms-editor-client.js', 'utf8');
const html = serverContext.globalThis.renderContentEditor('home', JSON.stringify(fixture), null, 'csrf-test-token', { common: '⚙️ Közös' }, clientJs, 'hash-test-value');
assert.ok(html.includes('let CONTENT_HASH = "hash-test-value"'));
const browserSource = [...html.matchAll(/<script(?: [^>]*)?>([\s\S]*?)<\/script>/g)].at(-1)[1]
  .replace("render(DATA, document.getElementById('editor'));", '')
  .replace("const toast = document.querySelector('.toast');", 'const toast = null;');

const fields = [
  { dataset: { path: 'title', type: 'string' }, value: 'Módosított' },
  { dataset: { path: 'enabled', type: 'boolean' }, checked: true },
  { dataset: { path: 'limit', type: 'number' }, value: '99' },
  { dataset: { path: 'sections[0].id', type: 'string' }, value: 'first' },
  { dataset: { path: 'sections[0].items[0]', type: 'string' }, value: 'egy' },
  { dataset: { path: 'sections[0].items[1]', type: 'string' }, value: 'kettő' },
  { dataset: { path: 'sections[0].settings.visible', type: 'boolean' }, checked: false },
  { dataset: { path: 'sections[0].settings.weight', type: 'number' }, value: '3' },
];
const document = {
  getElementById: id => id === 'page-data' ? { textContent: JSON.stringify(fixture) } : {},
  querySelectorAll: selector => selector === '[data-path]' ? fields : [],
  querySelector: () => null,
};
const browserContext = { document, console, setTimeout, fetch: async () => ({ json: async () => ({ ok: true }) }) };
vm.createContext(browserContext);
new vm.Script(`${browserSource}\nglobalThis.__collect = collect; globalThis.__reindexItems = reindexItems;`).runInContext(browserContext);

assert.deepStrictEqual(JSON.parse(JSON.stringify(browserContext.__collect())), {
  title: 'Módosított',
  enabled: true,
  limit: 99,
  sections: [{ id: 'first', items: ['egy', 'kettő'], settings: { visible: false, weight: 3 } }],
});

// Regression (MITHOME-30): reindexing a NESTED string array (e.g. services[1].specs.items
// after deleting its first item) must rewrite only the item's own trailing index.
// The old "replace first [n]" logic rewrote the OUTER array index and scattered the
// paths across services[0..n], producing sparse arrays and validation errors like
// "$.details.services[1].specs.items[0]: string érték szükséges".
const nestedEls = [1, 2, 3, 4, 5, 6].map(n => ({ dataset: { path: `details.services[1].specs.items[${n}]` } }));
const nestedItems = {
  dataset: { arrayItems: 'details.services[1].specs.items' },
  children: nestedEls.map(el => ({
    querySelectorAll: selector => (selector === '[data-path]' ? [el] : []),
    querySelector: () => null,
  })),
};
browserContext.__reindexItems(nestedItems);
assert.deepEqual(nestedEls.map(el => el.dataset.path), [
  'details.services[1].specs.items[0]',
  'details.services[1].specs.items[1]',
  'details.services[1].specs.items[2]',
  'details.services[1].specs.items[3]',
  'details.services[1].specs.items[4]',
  'details.services[1].specs.items[5]',
]);

// Reindexing the OUTER services array rewrites only the outer index and keeps
// nested field paths (including nested array item indices) intact.
const cardEls = [
  { dataset: { path: 'details.services[2].icon' } },
  { dataset: { path: 'details.services[2].specs.title' } },
  { dataset: { path: 'details.services[2].specs.items[4]' } },
];
const firstCardEl = { dataset: { path: 'details.services[0].icon' } };
const servicesItems = {
  dataset: { arrayItems: 'details.services' },
  children: [
    { querySelectorAll: selector => (selector === '[data-path]' ? [firstCardEl] : []), querySelector: () => null },
    { querySelectorAll: selector => (selector === '[data-path]' ? cardEls : []), querySelector: () => null },
  ],
};
browserContext.__reindexItems(servicesItems);
assert.equal(firstCardEl.dataset.path, 'details.services[0].icon');
assert.deepEqual(cardEls.map(el => el.dataset.path), [
  'details.services[1].icon',
  'details.services[1].specs.title',
  'details.services[1].specs.items[4]',
]);

console.log('Content Editor serializer regression test: OK');