import assert from 'node:assert/strict';
import { readFile, stat } from 'node:fs/promises';
import test from 'node:test';

const pairs = [
  ['block-1', 'period-1', 'discrete-mathematics'],
  ['block-1', 'period-1', 'procedural-programming'],
  ['block-2', 'period-2', 'calculus'],
  ['block-2', 'period-2', 'logic'],
  ['block-2', 'period-2', 'objects-in-programming'],
  ['block-4', 'period-4', 'data-structures-and-algorithms'],
  ['block-4', 'period-4', 'linear-algebra'],
];

test('shared courses have one body and two programme wrappers', async () => {
  for (const [block, period, slug] of pairs) {
    const partial = `src/content/shared-courses/year-1/${slug}.mdx`;
    assert.ok((await stat(partial)).isFile());
    for (const wrapper of [
      `src/content/docs/data-science-and-ai/year-1/${block}/${slug}.mdx`,
      `src/content/docs/computer-science/year-1/${period}/${slug}.mdx`,
    ]) {
      const content = await readFile(wrapper, 'utf8');
      assert.match(content, new RegExp(`shared-courses/year-1/${slug}\\.mdx`));
      assert.doesNotMatch(content, /## Full course description/);
    }
  }
});