// Run with Node: exercises the exact WebView script without executing school HTML scripts.
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const vm = require('node:vm');
const source = fs.readFileSync(path.join(__dirname, '../../lib/features/school/school_page_probe.dart'), 'utf8');
const script = source.match(/schoolPageProbeScript = r'''([\s\S]*?)''';/)[1];
const home = 'https://yjsjy.uestc.edu.cn/pyxx/home/index';
const timetable = 'https://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/1';

function term(id) {
  const result = {
    selectedIndex: 1,
    options: [false, false].map((selected, index) => ({
      selected, value: String(73 - index),
      setAttribute() { this.selected = true; },
      removeAttribute() { this.selected = false; },
    })),
    cloneNode() { return term(id); },
    get outerHTML() {
      return `<select id="${id}">${this.options.map((o, i) =>
        `<option value="${i}"${o.selected ? ' selected="selected"' : ''}>Term ${i}</option>`).join('')}</select>`;
    },
  };
  return result;
}

function doc(url, { password = false, chrome = false, table = false, exams = false, frames = [] } = {}) {
  return {
    location: new URL(url),
    querySelector(selector) {
      if (selector === 'input[type="password"]') return password ? {} : null;
      if (selector === '#navbar' || selector === '#main-container') return chrome ? {} : null;
      if (selector === '#tbl') return table ? {outerHTML: '<table id="tbl">synthetic timetable</table>'} : null;
      if (selector === '#drpxq') return table ? term('drpxq') : null;
      if (selector === '#sample-table-1') return exams ? {outerHTML: '<table id="sample-table-1">synthetic exams</table>'} : null;
      if (selector === '#xqbh') return exams ? term('xqbh') : null;
      return null;
    },
    querySelectorAll(selector) { return selector === 'iframe,frame' ? frames : []; },
  };
}

function probe(document, logout = () => {}) {
  return JSON.parse(vm.runInNewContext(script, {
    URL, document, location: document.location, window: {logout},
  }));
}

assert.equal(probe(doc(home)).authenticated, true, 'real logout function on known graduate home');
assert.equal(probe(doc(timetable, {chrome: true})).authenticated, true, 'graduate shell plus logout');
assert.equal(probe(doc('http://yjsjy.uestc.edu.cn/pyxx?targetUrl=-1', {chrome: true})).authenticated, true, 'graduate root shell');
assert.equal(probe(doc(home), undefined).authenticated, true); // default function
assert.equal(probe(doc(home), null).authenticated, false, 'home URL alone is insufficient');
assert.equal(probe(doc('https://yjsjy.uestc.edu.cn/pyxx/jzsso/login')).authenticated, false, 'callback alone is insufficient');

const top = probe(doc(timetable, {table: true}));
assert.equal(top.pages.length, 1);
assert.deepEqual(top.terms, [73, 72], 'bounded school term choices contain only dropdown IDs');
assert.match(top.pages[0].html, /value="1" selected="selected"/);
assert.doesNotMatch(top.pages[0].html, /value="0" selected/);

const inaccessible = {};
Object.defineProperty(inaccessible, 'contentDocument', {get() { throw new Error('cross-origin'); }});
const embedded = probe(doc(home, {frames: [
  inaccessible,
  {contentDocument: doc('https://captcha.example.test/pyxx/timetable', {table: true})},
  {contentDocument: doc('http://yjsjy.uestc.edu.cn/pyxx/timetable', {table: true})},
  {contentDocument: doc(timetable, {password: true, table: true})},
  {contentDocument: doc(timetable, {frames: [{contentDocument: doc(timetable, {table: true})}]})},
]}));
assert.equal(embedded.pages.length, 1, 'only nested same-origin graduate timetable is captured');
assert.equal(embedded.pages[0].url, timetable);
assert.equal(probe(doc(home, {password: true, table: true})).pages.length, 0);
assert.equal(probe(doc('https://idas.uestc.edu.cn/authserver/login', {table: true})).pages.length, 0);
for (const url of [
  'https://yjsjy.uestc.edu.cn.evil.test/pyxx/home/index',
  'https://yjsjy.uestc.edu.cn:444/pyxx/home/index',
  'https://user@yjsjy.uestc.edu.cn/pyxx/home/index',
  'file:///pyxx/home/index',
]) assert.equal(probe(doc(url, {table: true})).pages.length, 0);
assert.equal(probe(doc('http://yjsjy.uestc.edu.cn/pyxx/home/index', {table: true})).pages.length, 1);
assert.equal(probe(doc(home, {exams: true})).pages[0].kind, 'exams');
console.log('School WebView probe: authentication, table selection, frames, password exclusion, origins passed.');