import { beforeEach, describe, expect, it, vi } from 'vitest';
import { Role } from '@prisma/client';
import { AuthService } from './auth.service';
import { forTenant } from '../prisma/prisma-tenant.extension';

/**
 * Aufgabe 2 (260911-fh9): die Identitaets-Attrappe verschwindet. Der
 * Nachbau bekommt zwei UNTERSCHEIDBARE Klienten, in der Form von
 * `user.service.spec.ts`/`tenant.controller.spec.ts`: `forTenant()` wird
 * auf `__makeBoundClient(tenantId)` umgeleitet. Der UNGEBUNDENE Nachbau
 * (der ungebundene Basisclient selbst) hat `$queryRaw` und
 * `__makeBoundClient` — aber KEIN `user`- und KEIN `passwordResetToken`-
 * Modell: ein versehentlich ungebundener Modellzugriff scheitert mit
 * "Cannot read properties of undefined" (die dkv-Form der Falsifizierung).
 * Der GEBUNDENE Klient hat `user`/`passwordResetToken`, aber KEIN
 * `$queryRaw`: eine gebundene Anmeldesuche scheitert ebenso hart.
 */
vi.mock('../prisma/prisma-tenant.extension', () => ({
  forTenant: vi.fn((unboundClient: any, tenantId: string) => unboundClient.__makeBoundClient(tenantId)),
}));

/**
 * Baut eine Tagged-Template-Attrappe fuer prisma.$queryRaw, die die
 * uebergebenen SQL-Textstuecke und interpolierten Werte aufzeichnet und ein
 * konfigurierbares Ergebnis liefert — ohne laufende Datenbank.
 */
function fakeQueryRaw(resultsByCall: unknown[][]) {
  let callIndex = 0;
  const calls: { strings: TemplateStringsArray; values: unknown[] }[] = [];
  const fn = vi.fn((strings: TemplateStringsArray, ...values: unknown[]) => {
    calls.push({ strings, values });
    const result = resultsByCall[callIndex] ?? [];
    callIndex += 1;
    return Promise.resolve(result);
  });
  return { fn, calls };
}

interface FakeUserRow {
  id: string;
  tenantId: string;
  username: string;
  email?: string | null;
  passwordHash: string | null;
  ldapDn: string | null;
  isActive: boolean;
  role: string;
  displayName: string | null;
  mustChangePassword: boolean;
  avatarPath?: string | null;
  accentColor?: string | null;
  dashboardBackground?: unknown;
}

interface BoundCall {
  tenantId: string;
  model: 'user' | 'passwordResetToken';
  method: string;
  args: any;
}

/**
 * Zwei-Klienten-Nachbau (Muster `user.service.spec.ts`): `users` und
 * `resetTokens` sind das gemeinsame Gedaechtnis, der ungebundene Klient
 * (`$queryRaw`) und der gebundene Klient (`__makeBoundClient`) greifen auf
 * DIESELBEN Karten zu, protokollieren aber unterschiedlich — der
 * ungebundene protokolliert nicht, der gebundene schon.
 */
function makeFakePrisma(userRows: FakeUserRow[] = [], queryRawResults: unknown[][] = [[]]) {
  const users = new Map(userRows.map((u) => [u.id, { ...u }]));
  const resetTokens: any[] = [];
  const boundCallLog: BoundCall[] = [];
  const queryRaw = fakeQueryRaw(queryRawResults);

  function throwNotFound(): never {
    const err: any = new Error('Record to update not found');
    err.code = 'P2025';
    throw err;
  }

  function makeScopedUser(tenantId: string) {
    return {
      findUnique: async ({ where, select }: any) => {
        boundCallLog.push({ tenantId, model: 'user', method: 'findUnique', args: { where, select } });
        const row = users.get(where.id);
        if (!row || row.tenantId !== tenantId) return null;
        if (!select) return { ...row };
        const picked: any = {};
        for (const key of Object.keys(select)) {
          if (select[key]) picked[key] = (row as any)[key];
        }
        return picked;
      },
      update: async ({ where, data }: any) => {
        boundCallLog.push({ tenantId, model: 'user', method: 'update', args: { where, data } });
        const row = users.get(where.id);
        if (!row || row.tenantId !== tenantId) throwNotFound();
        const updated = { ...row, ...data };
        users.set(where.id, updated);
        return updated;
      },
    };
  }

  function makeScopedResetToken(tenantId: string) {
    return {
      create: async ({ data }: any) => {
        boundCallLog.push({ tenantId, model: 'passwordResetToken', method: 'create', args: { data } });
        const record = { id: `rt-${resetTokens.length + 1}`, usedAt: null, ...data };
        resetTokens.push(record);
        return record;
      },
      update: async ({ where, data }: any) => {
        boundCallLog.push({ tenantId, model: 'passwordResetToken', method: 'update', args: { where, data } });
        const idx = resetTokens.findIndex((t) => t.id === where.id);
        if (idx === -1) throwNotFound();
        resetTokens[idx] = { ...resetTokens[idx], ...data };
        return resetTokens[idx];
      },
    };
  }

  const fake: any = {
    $queryRaw: queryRaw.fn,
    __users: users,
    __resetTokens: resetTokens,
    __boundCallLog: boundCallLog,
    __makeBoundClient(tenantId: string) {
      return {
        __isBoundClient: true,
        __tenantId: tenantId,
        user: makeScopedUser(tenantId),
        passwordResetToken: makeScopedResetToken(tenantId),
      };
    },
  };

  return { prisma: fake, queryRaw };
}

function expectBoundCall(
  prisma: any,
  tenantId: string,
  model: 'user' | 'passwordResetToken',
  method: string,
) {
  const found = prisma.__boundCallLog.some(
    (c: BoundCall) => c.tenantId === tenantId && c.model === model && c.method === method,
  );
  expect(
    found,
    `erwarteter gebundener Aufruf ${model}.${method}(tenant=${tenantId}) fehlt im Protokoll: ${JSON.stringify(prisma.__boundCallLog)}`,
  ).toBe(true);
}

/**
 * validateUser — LDAP login path (AUTH-06 follow-up): users imported from LDAP
 * have no local passwordHash and must be authenticated by binding as their own
 * DN against the tenant's directory. These tests cover that branch; the local
 * password path (argon2) is unchanged and exercised elsewhere.
 *
 * Aufgabe 2 (260909-eor): validateUser sucht ab jetzt ueber
 * auth_lookup_user_by_username() via $queryRaw statt this.prisma.user.findUnique
 * — die Tests hier zeichnen $queryRaw statt user.findUnique auf.
 */
describe('AuthService.validateUser — LDAP login', () => {
  let service: AuthService;
  let prisma: any;
  let ldapService: any;
  let ldapConfigService: any;
  let queryRaw: ReturnType<typeof fakeQueryRaw>;

  const ldapUser = {
    id: 'u1',
    tenantId: 't1',
    username: 'alice',
    passwordHash: null,
    ldapDn: 'CN=alice,OU=Users,DC=ctl,DC=local',
    isActive: true,
    role: 'USER',
    displayName: null,
    mustChangePassword: false,
  };

  beforeEach(() => {
    vi.clearAllMocks();
    const built = makeFakePrisma([ldapUser as FakeUserRow], [[ldapUser]]);
    prisma = built.prisma;
    queryRaw = built.queryRaw;
    ldapService = { verifyUserCredentials: vi.fn() };
    ldapConfigService = {
      getConfig: vi.fn().mockResolvedValue({
        serverUrl: 'ldaps://balios.ctl.local:636',
        isActive: true,
        tlsRejectUnauthorized: false,
      }),
    };
    service = new AuthService(
      prisma,
      {} as any,
      {} as any,
      {} as any,
      ldapService,
      ldapConfigService,
    );
  });

  it('authenticates an LDAP user via a successful directory bind', async () => {
    ldapService.verifyUserCredentials.mockResolvedValue(true);

    const result = await service.validateUser('Alice', 'ad-password');

    expect(result).toEqual(ldapUser);
    expect(ldapService.verifyUserCredentials).toHaveBeenCalledWith(
      {
        serverUrl: 'ldaps://balios.ctl.local:636',
        tlsRejectUnauthorized: false,
      },
      ldapUser.ldapDn,
      'ad-password',
    );
    expectBoundCall(prisma, 't1', 'user', 'update');
  });

  it('rejects an LDAP user when the directory bind fails', async () => {
    ldapService.verifyUserCredentials.mockResolvedValue(false);

    const result = await service.validateUser('alice', 'wrong');

    expect(result).toBeNull();
    expect(prisma.__boundCallLog).toHaveLength(0);
  });

  it('rejects an LDAP user when no active LDAP config exists', async () => {
    ldapConfigService.getConfig.mockResolvedValue(null);

    const result = await service.validateUser('alice', 'pw');

    expect(result).toBeNull();
    expect(ldapService.verifyUserCredentials).not.toHaveBeenCalled();
  });

  it('rejects a passwordless user that has no ldapDn (never binds)', async () => {
    const built = makeFakePrisma([{ ...ldapUser, ldapDn: null } as FakeUserRow], [[{ ...ldapUser, ldapDn: null }]]);
    prisma.$queryRaw = built.queryRaw.fn;

    const result = await service.validateUser('alice', 'pw');

    expect(result).toBeNull();
    expect(ldapService.verifyUserCredentials).not.toHaveBeenCalled();
  });

  it('rejects an inactive LDAP user before any bind', async () => {
    queryRaw = fakeQueryRaw([[{ ...ldapUser, isActive: false }]]);
    prisma.$queryRaw = queryRaw.fn;

    const result = await service.validateUser('alice', 'pw');

    expect(result).toBeNull();
    expect(ldapService.verifyUserCredentials).not.toHaveBeenCalled();
  });

  it('lowercases the username before calling auth_lookup_user_by_username', async () => {
    ldapService.verifyUserCredentials.mockResolvedValue(true);

    await service.validateUser('Alice', 'ad-password');

    expect(queryRaw.calls).toHaveLength(1);
    expect(queryRaw.calls[0].values).toEqual(['alice']);
  });

  it('returns null (never throws) when auth_lookup_user_by_username finds nothing', async () => {
    queryRaw = fakeQueryRaw([[]]);
    prisma.$queryRaw = queryRaw.fn;

    const result = await service.validateUser('unknown', 'pw');

    expect(result).toBeNull();
  });

  it('scheitert an "Cannot read properties of undefined", wenn die Suche versehentlich ungebunden auf dem Basisclient laeuft (Falsifizierungsform)', () => {
    expect(prisma.user).toBeUndefined();
  });
});

/**
 * Lokaler Kennwort-Anmeldeweg (argon2) sowie requestPasswordReset/
 * resetPassword — decken die Aufgabe-2-Verhaltensfaelle ab: Anmeldesuche
 * findet den Benutzer weiterhin, Schreibzugriffe laufen nach gefundenem
 * Benutzer mandantengebunden.
 */
describe('AuthService.validateUser — lokales Kennwort', () => {
  let service: AuthService;
  let prisma: any;
  let queryRaw: ReturnType<typeof fakeQueryRaw>;
  let localUser: {
    id: string;
    tenantId: string;
    username: string;
    passwordHash: string;
    ldapDn: null;
    isActive: boolean;
    role: string;
    displayName: null;
    mustChangePassword: boolean;
  };

  beforeEach(async () => {
    vi.clearAllMocks();
    // Echter argon2-Hash statt Mock — argon2.verify laesst sich in ESM
    // nicht ueber vi.spyOn ersetzen (nicht konfigurierbarer Modul-Export).
    const argon2 = await import('argon2');
    localUser = {
      id: 'u2',
      tenantId: 't1',
      username: 'bob',
      passwordHash: await argon2.hash('correct-password'),
      ldapDn: null,
      isActive: true,
      role: 'USER',
      displayName: null,
      mustChangePassword: false,
    };

    const built = makeFakePrisma([localUser as FakeUserRow], [[localUser]]);
    prisma = built.prisma;
    queryRaw = built.queryRaw;
    service = new AuthService(prisma, {} as any, {} as any, {} as any, {} as any, {} as any);
  });

  it('findet den Benutzer weiterhin und aktualisiert lastLoginAt mandantengebunden', async () => {
    const result = await service.validateUser('bob', 'correct-password');

    expect(result).toEqual(localUser);
    expectBoundCall(prisma, 't1', 'user', 'update');
    const updateCall = prisma.__boundCallLog.find(
      (c: BoundCall) => c.model === 'user' && c.method === 'update',
    );
    expect(updateCall.args).toEqual({
      where: { id: 'u2' },
      data: { lastLoginAt: expect.any(Date) },
    });
  });

  it('sucht die Anmeldedaten exakt EINMAL ungebunden ueber $queryRaw und schreibt lastLoginAt exakt EINMAL gebunden unter dem Mandanten der Funktionszeile — die Grenze zwischen Anmeldeweg und Nach-Anmeldung', async () => {
    await service.validateUser('bob', 'correct-password');

    expect(queryRaw.calls).toHaveLength(1);
    expect(vi.mocked(forTenant).mock.calls).toHaveLength(1);
    expect(vi.mocked(forTenant).mock.calls[0][1]).toBe('t1');
    expectBoundCall(prisma, 't1', 'user', 'update');
  });
});

describe('AuthService.requestPasswordReset', () => {
  let service: AuthService;
  let prisma: any;
  let mailService: any;
  let queryRaw: ReturnType<typeof fakeQueryRaw>;

  const emailUser = {
    id: 'u3',
    tenantId: 't1',
    email: 'bob@example.com',
    isActive: true,
  };

  beforeEach(() => {
    vi.clearAllMocks();
    const built = makeFakePrisma([], [[emailUser]]);
    prisma = built.prisma;
    queryRaw = built.queryRaw;
    mailService = { sendPasswordResetEmail: vi.fn().mockResolvedValue(undefined) };
    service = new AuthService(prisma, {} as any, {} as any, mailService, {} as any, {} as any);
  });

  it('legt das Rueckstell-Token mandantengebunden an, sobald der Benutzer gefunden ist', async () => {
    await service.requestPasswordReset('bob@example.com');

    expectBoundCall(prisma, 't1', 'passwordResetToken', 'create');
    const createCall = prisma.__boundCallLog.find(
      (c: BoundCall) => c.model === 'passwordResetToken' && c.method === 'create',
    );
    expect(createCall.args).toEqual({
      data: {
        token: expect.any(String),
        userId: 'u3',
        expiresAt: expect.any(Date),
      },
    });
    // Drittes Argument (260914-eym): die tenantId des Empfaengers (emailUser
    // liegt unter 't1') — MailService baut daraus den Transport je Versand.
    expect(mailService.sendPasswordResetEmail).toHaveBeenCalledWith(
      'bob@example.com',
      expect.any(String),
      't1',
    );
  });

  it('kehrt bei unbekannter E-Mail wortlos zurueck (T-02-12, keine Enumeration)', async () => {
    queryRaw = fakeQueryRaw([[]]);
    prisma.$queryRaw = queryRaw.fn;

    await service.requestPasswordReset('unknown@example.com');

    expect(prisma.__boundCallLog).toHaveLength(0);
    expect(mailService.sendPasswordResetEmail).not.toHaveBeenCalled();
  });
});

describe('AuthService.resetPassword', () => {
  let service: AuthService;
  let prisma: any;
  let queryRaw: ReturnType<typeof fakeQueryRaw>;

  const resetTokenRow = {
    id: 'rt1',
    token: 'a-uuid-token',
    userId: 'u4',
    expiresAt: new Date(Date.now() + 60 * 60 * 1000),
    usedAt: null,
    tenantId: 't1',
  };

  beforeEach(() => {
    vi.clearAllMocks();
    const built = makeFakePrisma(
      [
        {
          id: 'u4',
          tenantId: 't1',
          username: 'dave',
          passwordHash: 'old-hash',
          ldapDn: null,
          isActive: true,
          role: 'USER',
          displayName: null,
          mustChangePassword: true,
        },
      ],
      [[resetTokenRow]],
    );
    prisma = built.prisma;
    queryRaw = built.queryRaw;
    // Das Token selbst existiert im gebundenen Nachbau nicht automatisch —
    // fuer den Update-Zweig genuegt hier, dass das UPDATE ueber die
    // Kennung `rt1` gelingt; deshalb wird der Datensatz vorab ueber die
    // Anlage nachgebildet, bevor resetPassword() ihn aktualisiert.
    prisma.__resetTokens.push({ id: 'rt1', token: 'a-uuid-token', usedAt: null });
    service = new AuthService(prisma, {} as any, {} as any, {} as any, {} as any, {} as any);
  });

  it('findet den passenden Rueckstell-Datensatz und aktualisiert Kennwort und Token mandantengebunden', async () => {
    await service.resetPassword('a-uuid-token', 'new-password');

    expectBoundCall(prisma, 't1', 'user', 'update');
    expectBoundCall(prisma, 't1', 'passwordResetToken', 'update');
    const userUpdate = prisma.__boundCallLog.find(
      (c: BoundCall) => c.model === 'user' && c.method === 'update',
    );
    expect(userUpdate.args).toEqual({
      where: { id: 'u4' },
      data: { passwordHash: expect.any(String), mustChangePassword: false },
    });
    const tokenUpdate = prisma.__boundCallLog.find(
      (c: BoundCall) => c.model === 'passwordResetToken' && c.method === 'update',
    );
    expect(tokenUpdate.args).toEqual({
      where: { id: 'rt1' },
      data: { usedAt: expect.any(Date) },
    });
  });

  it('wirft bei unbekanntem Token', async () => {
    queryRaw = fakeQueryRaw([[]]);
    prisma.$queryRaw = queryRaw.fn;

    await expect(service.resetPassword('unknown', 'pw')).rejects.toThrow(
      'Invalid or expired reset token',
    );
  });
});

/**
 * getMe/changePassword/adminResetPassword — bisher OHNE einen einzigen
 * Testfall (Befund F). Alle drei binden seit Aufgabe 2 an den Mandanten
 * aus dem Sitzungsnachweis.
 */
describe('AuthService.getMe', () => {
  let service: AuthService;
  let prisma: any;

  const localUserRow: FakeUserRow = {
    id: 'u1',
    tenantId: 't1',
    username: 'alice',
    passwordHash: 'a-hash',
    ldapDn: null,
    isActive: true,
    role: 'USER',
    displayName: 'Alice',
    mustChangePassword: false,
    avatarPath: 'avatars/u1.png',
    accentColor: '#3b82f6',
    // quick-260928-ujj: gespeicherter Zusatzschluessel wird bei der Ausgabe verworfen.
    dashboardBackground: { kind: 'preset', id: 'dunes', extra: 'weg' },
  };

  const ldapUserRow: FakeUserRow = {
    id: 'u2',
    tenantId: 't1',
    username: 'bob',
    passwordHash: null,
    ldapDn: 'CN=bob,OU=Users,DC=ctl,DC=local',
    isActive: true,
    role: 'USER',
    displayName: 'Bob',
    mustChangePassword: false,
    avatarPath: null,
    accentColor: null,
    dashboardBackground: null,
  };

  beforeEach(() => {
    vi.clearAllMocks();
    const built = makeFakePrisma([localUserRow, ldapUserRow]);
    prisma = built.prisma;
    service = new AuthService(prisma, {} as any, {} as any, {} as any, {} as any, {} as any);
  });

  it('eigener Mandant, lokaler Benutzer: liefert die oeffentlichen Felder, isLocalUser true, hasAvatar true — passwordHash/ldapDn/avatarPath fehlen (T-gbh-03)', async () => {
    const result = await service.getMe('t1', 'u1');

    expect(result).toMatchObject({
      id: 'u1',
      username: 'alice',
      displayName: 'Alice',
      role: 'USER',
      tenantId: 't1',
      mustChangePassword: false,
      accentColor: '#3b82f6',
      dashboardBackground: { kind: 'preset', id: 'dunes' },
      isLocalUser: true,
      hasAvatar: true,
    });
    expect(result).not.toHaveProperty('passwordHash');
    expect(result).not.toHaveProperty('ldapDn');
    expect(result).not.toHaveProperty('avatarPath');
  });

  it('eigener Mandant, LDAP-Benutzer (kein Hash, ldapDn gesetzt): isLocalUser false', async () => {
    const result = await service.getMe('t1', 'u2');

    expect(result).toMatchObject({ isLocalUser: false, hasAvatar: false });
  });

  it('quick-260928-ujj: dashboardBackground NULL (nie gewaehlt) kommt als null zurueck', async () => {
    const result = await service.getMe('t1', 'u2');

    expect(result).toHaveProperty('dashboardBackground', null);
  });

  it('quick-260928-ujj: ungueltiger gespeicherter Hintergrund kommt als null zurueck (T-ujj-01)', async () => {
    prisma.__users.set('u1', {
      ...prisma.__users.get('u1'),
      dashboardBackground: { kind: 'image', imageId: '") ; background: url("x' },
    });

    const result = await service.getMe('t1', 'u1');

    expect(result).toHaveProperty('dashboardBackground', null);
  });

  it('quick-260928-ujj: dashboardBackground steht im select neben accentColor', async () => {
    await service.getMe('t1', 'u1');

    const call = prisma.__boundCallLog.find((c: any) => c.method === 'findUnique');
    expect(call.args.select).toMatchObject({ accentColor: true, dashboardBackground: true });
  });

  it('FREMDER Mandant (Klient unter t2, Zeile unter t1): liefert null, kein Fehler', async () => {
    const result = await service.getMe('t2', 'u1');

    expect(result).toBeNull();
  });

  it('erzeugt genau EINEN gebundenen Klienten je Aufruf', async () => {
    vi.mocked(forTenant).mockClear();

    await service.getMe('t1', 'u1');

    expect(vi.mocked(forTenant).mock.calls).toHaveLength(1);
    expect(vi.mocked(forTenant).mock.calls[0][1]).toBe('t1');
  });
});

describe('AuthService.changePassword', () => {
  let service: AuthService;
  let prisma: any;
  let jwtService: any;
  let configService: any;
  let response: any;
  let localUserRow: FakeUserRow;
  let ldapUserRow: FakeUserRow;

  beforeEach(async () => {
    vi.clearAllMocks();
    const argon2 = await import('argon2');
    localUserRow = {
      id: 'u1',
      tenantId: 't1',
      username: 'alice',
      passwordHash: await argon2.hash('current-password'),
      ldapDn: null,
      isActive: true,
      role: 'USER',
      displayName: 'Alice',
      mustChangePassword: false,
    };
    ldapUserRow = {
      id: 'u2',
      tenantId: 't1',
      username: 'bob',
      passwordHash: null,
      ldapDn: 'CN=bob,OU=Users,DC=ctl,DC=local',
      isActive: true,
      role: 'USER',
      displayName: 'Bob',
      mustChangePassword: false,
    };
    const built = makeFakePrisma([localUserRow, ldapUserRow]);
    prisma = built.prisma;
    jwtService = { sign: vi.fn().mockReturnValue('signed.jwt.token') };
    configService = { get: vi.fn().mockReturnValue('development') };
    response = { cookie: vi.fn() };
    service = new AuthService(prisma, jwtService, configService, {} as any, {} as any, {} as any);
  });

  it('eigener Mandant, richtiges aktuelles Kennwort: gebundenes update traegt neuen Hash und mustChangePassword=false, JWT signiert mit tenantId/mustChangePassword, Cookie gesetzt', async () => {
    const argon2 = await import('argon2');

    await service.changePassword('t1', 'u1', 'current-password', 'brand-new-password', response);

    const updateCall = prisma.__boundCallLog.find(
      (c: BoundCall) => c.model === 'user' && c.method === 'update',
    );
    expect(updateCall).toBeDefined();
    expect(updateCall.args.where).toEqual({ id: 'u1' });
    expect(updateCall.args.data.mustChangePassword).toBe(false);
    const isNewHashValid = await argon2.verify(
      updateCall.args.data.passwordHash,
      'brand-new-password',
    );
    expect(isNewHashValid).toBe(true);

    expect(jwtService.sign).toHaveBeenCalledWith(
      expect.objectContaining({ tenantId: 't1', mustChangePassword: false }),
    );
    expect(response.cookie).toHaveBeenCalledWith(
      'session',
      'signed.jwt.token',
      expect.objectContaining({ httpOnly: true }),
    );
  });

  it('FREMDER Mandant: UnauthorizedException, kein Schreibzugriff, kein Cookie', async () => {
    await expect(
      service.changePassword('t2', 'u1', 'current-password', 'new-password', response),
    ).rejects.toThrow('User not found or has no local password');

    expect(prisma.__boundCallLog.some((c: BoundCall) => c.method === 'update')).toBe(false);
    expect(response.cookie).not.toHaveBeenCalled();
  });

  it('falsches aktuelles Kennwort: Current password is incorrect, kein Schreibzugriff', async () => {
    await expect(
      service.changePassword('t1', 'u1', 'wrong-password', 'new-password', response),
    ).rejects.toThrow('Current password is incorrect');

    expect(prisma.__boundCallLog.some((c: BoundCall) => c.method === 'update')).toBe(false);
  });

  it('LDAP-Benutzer (kein Hash): UnauthorizedException, kein Schreibzugriff', async () => {
    await expect(
      service.changePassword('t1', 'u2', 'anything', 'new-password', response),
    ).rejects.toThrow('User not found or has no local password');

    expect(prisma.__boundCallLog.some((c: BoundCall) => c.method === 'update')).toBe(false);
  });

  it('erzeugt genau EINEN gebundenen Klienten je Aufruf (Suche und Schreiben auf demselben)', async () => {
    vi.mocked(forTenant).mockClear();

    await service.changePassword('t1', 'u1', 'current-password', 'new-password', response);

    expect(vi.mocked(forTenant).mock.calls).toHaveLength(1);
  });
});

describe('AuthService.adminResetPassword', () => {
  let service: AuthService;
  let prisma: any;
  let targetUserRow: FakeUserRow;
  let superAdminTargetRow: FakeUserRow;

  beforeEach(() => {
    vi.clearAllMocks();
    targetUserRow = {
      id: 'target',
      tenantId: 't1',
      username: 'carol',
      passwordHash: 'old-hash',
      ldapDn: null,
      isActive: true,
      role: 'USER',
      displayName: 'Carol',
      mustChangePassword: false,
    };
    superAdminTargetRow = {
      id: 'boss',
      tenantId: 't1',
      username: 'dora',
      passwordHash: 'old-hash',
      ldapDn: null,
      isActive: true,
      role: 'SUPER_ADMIN',
      displayName: 'Dora',
      mustChangePassword: false,
    };
    const built = makeFakePrisma([targetUserRow, superAdminTargetRow]);
    prisma = built.prisma;
    service = new AuthService(prisma, {} as any, {} as any, {} as any, {} as any, {} as any);
  });

  it('eigener Mandant, Aufrufer ADMIN, Ziel USER: gebundenes update mit neuem Hash, mustChangePassword TRUE (Vorgabe, Parameter weggelassen)', async () => {
    const argon2 = await import('argon2');

    await service.adminResetPassword('t1', Role.ADMIN, 'target', 'fresh-password');

    const updateCall = prisma.__boundCallLog.find(
      (c: BoundCall) => c.model === 'user' && c.method === 'update',
    );
    expect(updateCall.args.where).toEqual({ id: 'target' });
    expect(updateCall.args.data.mustChangePassword).toBe(true);
    const ok = await argon2.verify(updateCall.args.data.passwordHash, 'fresh-password');
    expect(ok).toBe(true);
  });

  it('mustChangePassword: false wird durchgereicht', async () => {
    await service.adminResetPassword('t1', Role.ADMIN, 'target', 'fresh-password', false);

    const updateCall = prisma.__boundCallLog.find(
      (c: BoundCall) => c.model === 'user' && c.method === 'update',
    );
    expect(updateCall.args.data.mustChangePassword).toBe(false);
  });

  it('FREMDER Mandant: BadRequestException, Meldung woertlich "User not found", KEIN Schreibzugriff — nennt weder Halter noch Mandanten', async () => {
    await expect(
      service.adminResetPassword('t2', Role.ADMIN, 'target', 'fresh-password'),
    ).rejects.toThrow('User not found');

    expect(prisma.__boundCallLog.some((c: BoundCall) => c.method === 'update')).toBe(false);
  });

  it('Aufrufer ADMIN, Ziel SUPER_ADMIN im SELBEN Mandanten: ForbiddenException (T-FH9-04), KEIN Schreibzugriff', async () => {
    await expect(
      service.adminResetPassword('t1', Role.ADMIN, 'boss', 'fresh-password'),
    ).rejects.toThrow(); // ForbiddenException

    expect(prisma.__boundCallLog.some((c: BoundCall) => c.method === 'update')).toBe(false);
  });

  it('Aufrufer SUPER_ADMIN, Ziel SUPER_ADMIN: gelingt', async () => {
    await service.adminResetPassword('t1', Role.SUPER_ADMIN, 'boss', 'fresh-password');

    expectBoundCall(prisma, 't1', 'user', 'update');
  });

  it('erzeugt genau EINEN gebundenen Klienten je Aufruf', async () => {
    vi.mocked(forTenant).mockClear();

    await service.adminResetPassword('t1', Role.ADMIN, 'target', 'fresh-password');

    expect(vi.mocked(forTenant).mock.calls).toHaveLength(1);
  });
});