import { Prisma, Role } from '@prisma/client';
import {
  GLOBAL_LT_KC_ID,
  resolveOrProvisionAuthentikUser,
  toAuthenticatedUser,
} from './provision-user';

const CLAIMS = {
  sub: 'sub-1',
  email: 'New.Person@Example.org',
  firstName: 'New',
  lastName: 'Person',
};

function p2002() {
  return new Prisma.PrismaClientKnownRequestError('unique', {
    code: 'P2002',
    clientVersion: 'test',
  });
}

describe('resolveOrProvisionAuthentikUser', () => {
  it('returns the existing user without creating or capturing when nothing changed', async () => {
    const sync = { capture: jest.fn() };
    const existing = { id: 'u-1', authentikSub: 'sub-1', isLeitungsteam: false, memberships: [] };
    const prisma = {
      user: {
        findUnique: jest.fn().mockResolvedValue(existing),
        create: jest.fn(),
        update: jest.fn(),
      },
    };
    const res = await resolveOrProvisionAuthentikUser(prisma as never, sync as never, CLAIMS, false);
    expect(res).toBe(existing);
    expect(prisma.user.create).not.toHaveBeenCalled();
    expect(prisma.user.update).not.toHaveBeenCalled();
    expect(sync.capture).not.toHaveBeenCalled();
  });

  it('provisions a new user from claims (lowercased email) and captures it', async () => {
    const sync = { capture: jest.fn().mockResolvedValue(undefined) };
    const prisma = {
      user: {
        findUnique: jest.fn().mockResolvedValue(null),
        create: jest.fn(({ data }: { data: Record<string, unknown> }) =>
          Promise.resolve({ id: 'u-2', isLeitungsteam: false, ...data }),
        ),
        update: jest.fn(),
      },
    };
    const res = await resolveOrProvisionAuthentikUser(prisma as never, sync as never, CLAIMS, false);
    expect(prisma.user.create).toHaveBeenCalledWith({
      data: {
        authentikSub: 'sub-1',
        email: 'new.person@example.org',
        firstName: 'New',
        lastName: 'Person',
      },
    });
    expect(res.memberships).toEqual([]);
    expect(sync.capture).toHaveBeenCalledWith('User', 'CREATE', 'u-2', expect.anything());
  });

  it('reconciles the LEITUNGSTEAM flag up when the token now has the group', async () => {
    const sync = { capture: jest.fn().mockResolvedValue(undefined) };
    const existing = { id: 'u-1', authentikSub: 'sub-1', isLeitungsteam: false, memberships: [] };
    const prisma = {
      user: {
        findUnique: jest.fn().mockResolvedValue(existing),
        create: jest.fn(),
        update: jest.fn(({ data }: { data: Record<string, unknown> }) =>
          Promise.resolve({ ...existing, ...data, memberships: [] }),
        ),
      },
    };
    const res = await resolveOrProvisionAuthentikUser(prisma as never, sync as never, CLAIMS, true);
    expect(prisma.user.update).toHaveBeenCalledWith({
      where: { id: 'u-1' },
      data: { isLeitungsteam: true },
      include: { memberships: { where: { status: 'ACTIVE' } } },
    });
    expect(res.isLeitungsteam).toBe(true);
    expect(sync.capture).toHaveBeenCalledWith('User', 'UPDATE', 'u-1', expect.anything());
  });

  it('reconciles the LEITUNGSTEAM flag down when the group is gone', async () => {
    const sync = { capture: jest.fn().mockResolvedValue(undefined) };
    const existing = { id: 'u-1', authentikSub: 'sub-1', isLeitungsteam: true, memberships: [] };
    const prisma = {
      user: {
        findUnique: jest.fn().mockResolvedValue(existing),
        create: jest.fn(),
        update: jest.fn(({ data }: { data: Record<string, unknown> }) =>
          Promise.resolve({ ...existing, ...data, memberships: [] }),
        ),
      },
    };
    await resolveOrProvisionAuthentikUser(prisma as never, sync as never, CLAIMS, false);
    expect(prisma.user.update).toHaveBeenCalledWith(
      expect.objectContaining({ data: { isLeitungsteam: false } }),
    );
  });

  it('recovers from a concurrent-create race (P2002) by re-reading', async () => {
    const sync = { capture: jest.fn() };
    const raced = { id: 'u-3', authentikSub: 'sub-1', isLeitungsteam: false, memberships: [] };
    const prisma = {
      user: {
        findUnique: jest.fn().mockResolvedValueOnce(null).mockResolvedValueOnce(raced),
        create: jest.fn().mockRejectedValue(p2002()),
        update: jest.fn(),
      },
    };
    const res = await resolveOrProvisionAuthentikUser(prisma as never, sync as never, CLAIMS, false);
    expect(res).toBe(raced);
    expect(sync.capture).not.toHaveBeenCalled();
  });

  it('rethrows a P2002 when the row still cannot be found', async () => {
    const sync = { capture: jest.fn() };
    const prisma = {
      user: {
        findUnique: jest.fn().mockResolvedValue(null),
        create: jest.fn().mockRejectedValue(p2002()),
        update: jest.fn(),
      },
    };
    await expect(
      resolveOrProvisionAuthentikUser(prisma as never, sync as never, CLAIMS, false),
    ).rejects.toBeInstanceOf(Prisma.PrismaClientKnownRequestError);
  });

  it('rethrows a non-P2002 error', async () => {
    const sync = { capture: jest.fn() };
    const prisma = {
      user: {
        findUnique: jest.fn().mockResolvedValue(null),
        create: jest.fn().mockRejectedValue(new Error('db down')),
        update: jest.fn(),
      },
    };
    await expect(
      resolveOrProvisionAuthentikUser(prisma as never, sync as never, CLAIMS, false),
    ).rejects.toThrow('db down');
  });
});

describe('toAuthenticatedUser', () => {
  const row = {
    id: 'u-1',
    authentikSub: 'sub-1',
    email: 'a@b.org',
    isLeitungsteam: false,
    memberships: [
      { kcId: 'kc-1', gemeindeId: 'gem-1', role: Role.GEMEINDE_VERANTWORTLICHER },
    ],
  };

  it('maps membership rows straight through when not Leitungsteam', () => {
    const res = toAuthenticatedUser(row as never);
    expect(res.memberships).toEqual([
      { kcId: 'kc-1', gemeindeId: 'gem-1', role: Role.GEMEINDE_VERANTWORTLICHER },
    ]);
  });

  it('prepends a synthetic global LEITUNGSTEAM membership when the flag is set', () => {
    const res = toAuthenticatedUser({ ...row, isLeitungsteam: true } as never);
    expect(res.memberships[0]).toEqual({
      kcId: GLOBAL_LT_KC_ID,
      gemeindeId: null,
      role: Role.LEITUNGSTEAM,
    });
    expect(res.memberships).toHaveLength(2);
  });
});