import { describe, expect, it } from 'vitest';
import { HELP_TOPICS, SHORTCUT_GROUPS, shortcutKeys } from '../help';

describe('in-app help content', () => {
  it('topics have unique ids that never clash with the fixed pages', () => {
    const ids = HELP_TOPICS.map((t) => t.id);
    expect(new Set(ids).size).toBe(ids.length);
    expect(ids).not.toContain('shortcuts');
    expect(ids).not.toContain('functions');
  });

  it('no empty topics, sections, items or shortcuts', () => {
    for (const t of HELP_TOPICS) {
      expect(t.title.trim()).not.toBe('');
      expect(t.sections.length).toBeGreaterThan(0);
      for (const s of t.sections) {
        expect(s.items.length).toBeGreaterThan(0);
        for (const i of s.items) expect(i.trim()).not.toBe('');
      }
    }
    for (const g of SHORTCUT_GROUPS) {
      expect(g.shortcuts.length).toBeGreaterThan(0);
      for (const s of g.shortcuts) {
        expect(s.keys.trim()).not.toBe('');
        expect(s.description.trim()).not.toBe('');
      }
    }
  });

  it('inline markup is balanced, so nothing renders half-bold', () => {
    const all = HELP_TOPICS.flatMap((t) => t.sections.flatMap((s) => s.items));
    for (const text of all) {
      expect((text.match(/`/g) ?? []).length % 2, text).toBe(0);
      expect((text.match(/\*\*/g) ?? []).length % 2, text).toBe(0);
    }
  });

  it('names the keys per platform: Strg on Windows/Linux, ⌘/⌥ and the Mac overrides on a Mac', () => {
    expect(shortcutKeys({ keys: 'Mod+Umschalt+U' }, 'pc')).toBe('Strg+Umschalt+U');
    expect(shortcutKeys({ keys: 'Mod+Umschalt+U' }, 'mac')).toBe('⌘+Umschalt+U');
    expect(shortcutKeys({ keys: 'Alt+Enter oder Mod+Enter' }, 'mac')).toBe('⌥+Enter oder ⌘+Enter');
    expect(shortcutKeys({ keys: 'Pos1 / Ende', mac: 'fn+← / fn+→' }, 'pc')).toBe('Pos1 / Ende');
    expect(shortcutKeys({ keys: 'Pos1 / Ende', mac: 'fn+← / fn+→' }, 'mac')).toBe('fn+← / fn+→');
    // running text: only whole words are key names
    expect(shortcutKeys('Alter mit Mod', 'mac')).toBe('Alter mit ⌘');
  });

  it('no Windows/Linux key text is left with a Mac-only symbol, and vice versa', () => {
    for (const g of SHORTCUT_GROUPS) {
      for (const s of g.shortcuts) {
        expect(shortcutKeys(s, 'pc'), s.keys).not.toMatch(/[⌘⌥⌫]|\bfn\b/);
        expect(shortcutKeys(s, 'mac'), s.keys).not.toMatch(/\b(Strg|Mod|Alt)\b/);
      }
    }
  });
});