import assert from 'node:assert/strict';
import test from 'node:test';
import { filterResolvedSidebar, programmeForPathname, programmeSwitchTargets, sidebarForPathname } from '../src/config/programme-navigation.mjs';

test('programme routes identify the active bachelor programme', () => {
  assert.equal(programmeForPathname('/computer-science/year-1/'), 'computer-science');
  assert.equal(programmeForPathname('/data-science-and-ai/year-2/'), 'data-science-and-ai');
  assert.equal(programmeForPathname('/useful-information/'), null);
});

test('programme routes retain only the selected curriculum and shared destinations', () => {
  const computerScience = JSON.stringify(sidebarForPathname('/computer-science/year-1/'));
  assert.match(computerScience, /"label":"Home"/);
  assert.match(computerScience, /previous-exams-and-documents/);
  assert.match(computerScience, /"label":"Computer Science"/);
  assert.match(computerScience, /"label":"Useful Information"/);
  assert.doesNotMatch(computerScience, /"label":"Data Science & AI"/);
  assert.doesNotMatch(computerScience, /"label":"About Incognito"/);
  assert.doesNotMatch(computerScience, /"label":"Master AI"/);
  assert.doesNotMatch(computerScience, /"label":"Master DSDM"/);

  const dataScience = JSON.stringify(sidebarForPathname('/data-science-and-ai/year-2/'));
  assert.match(dataScience, /"label":"Home"/);
  assert.match(dataScience, /previous-exams-and-documents/);
  assert.match(dataScience, /"label":"Data Science & AI"/);
  assert.match(dataScience, /"label":"Useful Information"/);
  assert.doesNotMatch(dataScience, /"label":"Computer Science"/);
  assert.doesNotMatch(dataScience, /"label":"About Incognito"/);
  assert.doesNotMatch(dataScience, /"label":"Master AI"/);
  assert.doesNotMatch(dataScience, /"label":"Master DSDM"/);
});

test('global routes retain the existing global navigation', () => {
  const global = JSON.stringify(sidebarForPathname('/useful-information/'));
  assert.match(global, /"label":"About Incognito"/);
  assert.match(global, /"label":"Master AI"/);
  assert.match(global, /"label":"Master DSDM"/);
  assert.match(global, /"label":"Bachelor programmes"/);
});

test('resolved programme sidebars use the same focused groups', () => {
  const entries = [
    { label: 'Home' },
    { label: 'About Incognito' },
    { label: 'Previous exams and documents' },
    { label: 'Computer Science' },
    { label: 'Data Science & AI' },
    { label: 'Master AI' },
    { label: 'Master DSDM' },
    { label: 'Useful Information' },
  ];

  assert.deepEqual(
    filterResolvedSidebar(entries, '/computer-science/').map(({ label }) => label),
    ['Home', 'Previous exams and documents', 'Computer Science', 'Useful Information'],
  );
  assert.deepEqual(
    filterResolvedSidebar(entries, '/data-science-and-ai/').map(({ label }) => label),
    ['Home', 'Previous exams and documents', 'Data Science & AI', 'Useful Information'],
  );
  assert.deepEqual(filterResolvedSidebar(entries, '/useful-information/'), entries);
});

test('shared course switches to its paired programme route', () => {
  const targets = programmeSwitchTargets('/computer-science/year-1/period-2/calculus/');
  assert.equal(targets.dataScience, '/data-science-and-ai/year-1/block-2/calculus/');
  assert.equal(targets.computerScience, '/computer-science/year-1/period-2/calculus/');
});