import {
  applyCompletion,
  isUnsafeNavigateTarget,
  navigateTargetKeys,
  parseCommand,
  suggestCompletions,
} from './terminal-commands';

describe('terminal command grammar', () => {
  it('parses help, history, clear, brew and rev', () => {
    expect(parseCommand('help')).toEqual({ kind: 'help' });
    expect(parseCommand('history')).toEqual({ kind: 'history' });
    expect(parseCommand('clear')).toEqual({ kind: 'clear' });
    expect(parseCommand('brew')).toEqual({ kind: 'brew' });
    expect(parseCommand('rev')).toEqual({ kind: 'rev' });
    expect(parseCommand('  Hilfe  ')).toEqual({ kind: 'help' });
    expect(parseCommand('')).toEqual({ kind: 'empty' });
  });

  it('resolves navigate targets including the four service fragments', () => {
    expect(parseCommand('navigate home')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'route', routeId: 'home' },
      targetKey: 'home',
    });
    expect(parseCommand('navigate pitch')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'route', routeId: 'pitch' },
      targetKey: 'pitch',
    });
    expect(parseCommand('navigate services')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'route', routeId: 'services' },
      targetKey: 'services',
    });
    expect(parseCommand('navigate services ai')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'route', routeId: 'services', fragment: 'ai-workflows' },
      targetKey: 'services ai',
    });
    expect(parseCommand('navigate leistungen software')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'route', routeId: 'services', fragment: 'software-data' },
      targetKey: 'services software',
    });
    expect(parseCommand('navigate services infrastructure')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'route', routeId: 'services', fragment: 'infrastructure-network' },
      targetKey: 'services infrastructure',
    });
    expect(parseCommand('navigate services platform')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'route', routeId: 'services', fragment: 'platform-operations' },
      targetKey: 'services platform',
    });
    expect(parseCommand('navigate cv')).toEqual({
      kind: 'navigate',
      resolution: { kind: 'cv' },
      targetKey: 'cv',
    });
  });

  it('suggests valid targets for incomplete navigate input', () => {
    const parsed = parseCommand('navigate');
    expect(parsed.kind).toBe('incomplete');
    if (parsed.kind === 'incomplete') {
      expect(parsed.suggestions).toEqual([...navigateTargetKeys()]);
    }

    const unknown = parseCommand('navigate nowhere');
    expect(unknown.kind).toBe('unknown-target');
    if (unknown.kind === 'unknown-target') {
      expect(unknown.target).toBe('nowhere');
    }
  });

  it('completes the current token against commands and navigate targets', () => {
    expect(suggestCompletions('he')).toEqual(['help']);
    expect(applyCompletion('he')).toEqual({ value: 'help', candidates: ['help'] });
    expect(suggestCompletions('navigate p')).toEqual(['pitch', 'profil', 'projects', 'projekte']);
    expect(applyCompletion('navigate pit')).toEqual({
      value: 'navigate pitch',
      candidates: ['pitch'],
    });
    expect(suggestCompletions('navigate services a')).toEqual(['services ai']);
  });

  it('rejects unsafe navigate targets without treating them as routes', () => {
    const hostile = [
      'navigate https://example.com',
      'navigate ../secret',
      'navigate /etc/passwd',
      'navigate javascript:alert(1)',
    ];

    for (const input of hostile) {
      const target = input.slice('navigate '.length);
      expect(isUnsafeNavigateTarget(target), input).toBe(true);
      expect(parseCommand(input)).toEqual({
        kind: 'unknown-target',
        input,
        target,
      });
    }
  });
});