/**
 * @ai-summary Admin service unit tests
 * @ai-context Tests business logic for admin management
 */

import { AdminService } from '../../domain/admin.service';
import { AdminRepository } from '../../data/admin.repository';

// Mock the audit log service
jest.mock('../../../audit-log', () => ({
  auditLogService: {
    info: jest.fn().mockResolvedValue(undefined),
    warn: jest.fn().mockResolvedValue(undefined),
    error: jest.fn().mockResolvedValue(undefined),
  },
}));

describe('AdminService', () => {
  let adminService: AdminService;
  let mockRepository: jest.Mocked<AdminRepository>;

  beforeEach(() => {
    mockRepository = {
      getAdminById: jest.fn(),
      getAdminByUserProfileId: jest.fn(),
      getAdminByEmail: jest.fn(),
      getAllAdmins: jest.fn(),
      getActiveAdmins: jest.fn(),
      createAdmin: jest.fn(),
      revokeAdmin: jest.fn(),
      reinstateAdmin: jest.fn(),
      logAuditAction: jest.fn(),
      getAuditLogs: jest.fn(),
    } as any;

    adminService = new AdminService(mockRepository);
  });

  describe('getAdminById', () => {
    it('should return admin when found', async () => {
      const mockAdmin = {
        id: '7c9e6679-7425-40de-944b-e07fc1f90ae7',
        userProfileId: '7c9e6679-7425-40de-944b-e07fc1f90ae7',
        email: 'admin@motovaultpro.com',
        role: 'admin' as const,
        createdAt: new Date(),
        createdBy: '550e8400-e29b-41d4-a716-446655440000',
        revokedAt: null,
        updatedAt: new Date(),
      };

      mockRepository.getAdminById.mockResolvedValue(mockAdmin);

      const result = await adminService.getAdminById('7c9e6679-7425-40de-944b-e07fc1f90ae7');

      expect(result).toEqual(mockAdmin);
      expect(mockRepository.getAdminById).toHaveBeenCalledWith('7c9e6679-7425-40de-944b-e07fc1f90ae7');
    });

    it('should return null when admin not found', async () => {
      mockRepository.getAdminById.mockResolvedValue(null);

      const result = await adminService.getAdminById('00000000-0000-0000-0000-000000000000');

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

  describe('createAdmin', () => {
    it('should create new admin and log audit', async () => {
      const newAdminId = '8f14e45f-ceea-367f-a27f-c9a6d0c67e0e';
      const creatorId = '7c9e6679-7425-40de-944b-e07fc1f90ae7';
      const mockAdmin = {
        id: newAdminId,
        userProfileId: newAdminId,
        email: 'newadmin@motovaultpro.com',
        role: 'admin' as const,
        createdAt: new Date(),
        createdBy: creatorId,
        revokedAt: null,
        updatedAt: new Date(),
      };

      mockRepository.getAdminByEmail.mockResolvedValue(null);
      mockRepository.createAdmin.mockResolvedValue(mockAdmin);
      mockRepository.logAuditAction.mockResolvedValue({} as any);

      const result = await adminService.createAdmin(
        'newadmin@motovaultpro.com',
        'admin',
        newAdminId,
        creatorId
      );

      expect(result).toEqual(mockAdmin);
      expect(mockRepository.createAdmin).toHaveBeenCalled();
      expect(mockRepository.logAuditAction).toHaveBeenCalledWith(
        creatorId,
        'CREATE',
        mockAdmin.id,
        'admin_user',
        mockAdmin.email,
        expect.any(Object)
      );
    });

    it('should reject if admin already exists', async () => {
      const existingId = '7c9e6679-7425-40de-944b-e07fc1f90ae7';
      const existingAdmin = {
        id: existingId,
        userProfileId: existingId,
        email: 'admin@motovaultpro.com',
        role: 'admin' as const,
        createdAt: new Date(),
        createdBy: '550e8400-e29b-41d4-a716-446655440000',
        revokedAt: null,
        updatedAt: new Date(),
      };

      mockRepository.getAdminByEmail.mockResolvedValue(existingAdmin);

      await expect(
        adminService.createAdmin('admin@motovaultpro.com', 'admin', '8f14e45f-ceea-367f-a27f-c9a6d0c67e0e', existingId)
      ).rejects.toThrow('already exists');
    });
  });

  describe('revokeAdmin', () => {
    it('should revoke admin when multiple active admins exist', async () => {
      const toRevokeId = 'a1b2c3d4-e5f6-7890-1234-567890abcdef';
      const admin1Id = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';
      const admin2Id = '8f14e45f-ceea-367f-a27f-c9a6d0c67e0e';

      const revokedAdmin = {
        id: toRevokeId,
        userProfileId: toRevokeId,
        email: 'toadmin@motovaultpro.com',
        role: 'admin' as const,
        createdAt: new Date(),
        createdBy: '550e8400-e29b-41d4-a716-446655440000',
        revokedAt: new Date(),
        updatedAt: new Date(),
      };

      const activeAdmins = [
        {
          id: admin1Id,
          userProfileId: admin1Id,
          email: 'admin1@motovaultpro.com',
          role: 'admin' as const,
          createdAt: new Date(),
          createdBy: '550e8400-e29b-41d4-a716-446655440000',
          revokedAt: null,
          updatedAt: new Date(),
        },
        {
          id: admin2Id,
          userProfileId: admin2Id,
          email: 'admin2@motovaultpro.com',
          role: 'admin' as const,
          createdAt: new Date(),
          createdBy: '550e8400-e29b-41d4-a716-446655440000',
          revokedAt: null,
          updatedAt: new Date(),
        },
      ];

      mockRepository.getActiveAdmins.mockResolvedValue(activeAdmins);
      mockRepository.revokeAdmin.mockResolvedValue(revokedAdmin);
      mockRepository.logAuditAction.mockResolvedValue({} as any);

      const result = await adminService.revokeAdmin(toRevokeId, admin1Id);

      expect(result).toEqual(revokedAdmin);
      expect(mockRepository.revokeAdmin).toHaveBeenCalledWith(toRevokeId);
      expect(mockRepository.logAuditAction).toHaveBeenCalled();
    });

    it('should prevent revoking last active admin', async () => {
      const lastAdminId = '7c9e6679-7425-40de-944b-e07fc1f90ae7';
      const lastAdmin = {
        id: lastAdminId,
        userProfileId: lastAdminId,
        email: 'last@motovaultpro.com',
        role: 'admin' as const,
        createdAt: new Date(),
        createdBy: '550e8400-e29b-41d4-a716-446655440000',
        revokedAt: null,
        updatedAt: new Date(),
      };

      mockRepository.getActiveAdmins.mockResolvedValue([lastAdmin]);

      await expect(
        adminService.revokeAdmin(lastAdminId, lastAdminId)
      ).rejects.toThrow('Cannot revoke the last active admin');
    });
  });

  describe('reinstateAdmin', () => {
    it('should reinstate revoked admin and log audit', async () => {
      const reinstateId = 'b2c3d4e5-f6a7-8901-2345-678901bcdef0';
      const adminActorId = '7c9e6679-7425-40de-944b-e07fc1f90ae7';
      const reinstatedAdmin = {
        id: reinstateId,
        userProfileId: reinstateId,
        email: 'reinstate@motovaultpro.com',
        role: 'admin' as const,
        createdAt: new Date(),
        createdBy: '550e8400-e29b-41d4-a716-446655440000',
        revokedAt: null,
        updatedAt: new Date(),
      };

      mockRepository.reinstateAdmin.mockResolvedValue(reinstatedAdmin);
      mockRepository.logAuditAction.mockResolvedValue({} as any);

      const result = await adminService.reinstateAdmin(reinstateId, adminActorId);

      expect(result).toEqual(reinstatedAdmin);
      expect(mockRepository.reinstateAdmin).toHaveBeenCalledWith(reinstateId);
      expect(mockRepository.logAuditAction).toHaveBeenCalledWith(
        adminActorId,
        'REINSTATE',
        reinstateId,
        'admin_user',
        reinstatedAdmin.email
      );
    });
  });
});