const { test } = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');

function read(relativePath) {
  return fs.readFileSync(path.join(__dirname, '..', relativePath), 'utf8');
}

const source = read('public/js/learningHub.js');
const apiModule = read('public/js/learningHub/api.js');
const editorModule = read('public/js/learningHub/tiptapEditor.js');
const feedRendererModule = read('public/js/learningHub/feedRenderer.js');
const sanitizeModule = read('public/js/learningHub/sanitize.js');

test('Learning Hub destroys embedded Tiptap editors before removing CMS rows', () => {
  assert.match(source, /from '\.\/learningHub\/tiptapEditor\.js'/);
  assert.match(editorModule, /export function destroyTpEditor\(editor\)/);
  assert.match(editorModule, /export function destroyQuestionBlockEditors\(block\)/);
  assert.match(editorModule, /export function clearQuestionBlocks\(container\)/);
  assert.match(source, /destroyQuestionBlockEditors\(qb\); qb\.remove\(\)/);
  assert.match(source, /destroyOptionEditor\(row\); row\.remove\(\)/);
  assert.doesNotMatch(source, /document\.getElementById\('lh-cms-questions'\)\.innerHTML = ''/);
  assert.doesNotMatch(source, /qContainer\.innerHTML = ''/);
});

test('Learning Hub sanitization helpers are isolated for renderer reuse', () => {
  assert.match(source, /from '\.\/learningHub\/sanitize\.js'/);
  assert.match(sanitizeModule, /export function esc\(str\)/);
  assert.match(sanitizeModule, /export function sanitizeHtml\(html\)/);
  assert.match(sanitizeModule, /DOMPurify\.sanitize/);
  assert.doesNotMatch(sanitizeModule, /ai-generate|ai-refine|FormData|\/api\/admin\/learning/);
  assert.doesNotMatch(source, /function sanitizeHtml\(html\)/);
});

test('Learning Hub API helpers centralize auth JSON fetches', () => {
  assert.match(source, /from '\.\/learningHub\/api\.js'/);
  assert.match(apiModule, /export function getJson\(url\)/);
  assert.match(apiModule, /getAuthHeaders\(\)/);
  assert.match(apiModule, /export function sendJson\(url, method, payload\)/);
  assert.match(apiModule, /export function deleteJson\(url\)/);
});

test('Learning Hub Tiptap helpers are isolated from content generation flow', () => {
  assert.match(editorModule, /export function makeTpEditor/);
  assert.match(editorModule, /window\.Tiptap/);
  assert.doesNotMatch(editorModule, /ai-generate|ai-refine|FormData|\/api\/admin\/learning/);
});

test('Learning Hub feed renderers are isolated from API and editor flows', () => {
  assert.match(source, /from '\.\/learningHub\/feedRenderer\.js'/);
  assert.match(feedRendererModule, /export function renderCategoryPills\(categories\)/);
  assert.match(feedRendererModule, /export function renderFeed\(items, feedEl\)/);
  assert.match(feedRendererModule, /export function renderSearchHeader\(count, query\)/);
  assert.match(feedRendererModule, /export function renderEmptySearchMessage\(\)/);
  assert.match(feedRendererModule, /fa-presentation-screen/);
  assert.doesNotMatch(feedRendererModule, /fetch\(|getJson|sendJson|deleteJson|ai-generate|FormData|window\.Tiptap/);
  assert.doesNotMatch(source, /function renderFeed\(items, feedEl\)/);
});