import { existsSync, readdirSync } from 'node:fs';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';
import { describe, expect, it } from 'vitest';
import CertManagerLayout from './cert-manager/layout';
import DkvFleetLayout from './dkv-fleet/layout';
import DomaincheckLayout from './domaincheck/layout';
import TenderRadarLayout from './tender-radar/layout';

/**
 * Covers T-e8k-01, T-e8k-03, and T-e8k-04 (WINDOWS #10, PERM-04):
 *
 * - Each module-owned layout wraps children in ModuleAccessGate with the
 *   slug that exactly matches its directory name — a copy-paste mistake
 *   between the four near-identical files would flip the wrong module's
 *   gate (T-e8k-03).
 * - Every non-dynamic module directory has a layout.tsx — a future module
 *   directory added without one would run past the gate again exactly
 *   like the four routes this plan fixes (T-e8k-04).
 */

const modulesDir = dirname(fileURLToPath(import.meta.url));

/**
 * Ordner ohne ModuleAccessGate, bewusst (quick-260929-9wc): `custom/` traegt
 * die Rahmen-Seiten der „Eigenen Module“. Das sind keine Zeilen der Tabelle
 * `Module` und haengen an keiner Aktivierung oder Freigabe — sie sind fuer
 * ALLE angemeldeten Benutzer sichtbar (D-01). Jeder weitere Eintrag hier ist
 * eine bewusste Ausnahme von T-e8k-04 und gehoert begruendet.
 */
const DIRS_WITHOUT_GATE: readonly string[] = ['custom'];

const placeholderChild = <div data-testid="placeholder-child">child</div>;

describe('module layouts — ModuleAccessGate slug wiring (T-e8k-01, T-e8k-03)', () => {
  it.each([
    ['cert-manager', CertManagerLayout],
    ['dkv-fleet', DkvFleetLayout],
    ['domaincheck', DomaincheckLayout],
    ['tender-radar', TenderRadarLayout],
  ] as const)('%s/layout.tsx passes moduleSlug="%s" and forwards children', (expectedSlug, Layout) => {
    const element = Layout({ children: placeholderChild });

    expect(element.props.moduleSlug).toBe(expectedSlug);
    expect(element.props.children).toBe(placeholderChild);
  });
});

describe('module directory coverage — every module has a layout (T-e8k-04)', () => {
  it('requires a layout.tsx in every non-dynamic module directory', () => {
    const entries = readdirSync(modulesDir, { withFileTypes: true })
      .filter((entry) => entry.isDirectory())
      .filter((entry) => !entry.name.startsWith('['))
      .filter((entry) => !DIRS_WITHOUT_GATE.includes(entry.name))
      .map((entry) => entry.name);

    expect(entries.length).toBeGreaterThan(0);

    for (const dirName of entries) {
      const hasLayout =
        existsSync(join(modulesDir, dirName, 'layout.tsx')) ||
        existsSync(join(modulesDir, dirName, 'layout.ts'));
      expect(hasLayout, `${dirName}/ is missing a layout.tsx`).toBe(true);
    }
  });
});