import { describe, it, expect, vi, beforeEach } from 'vitest';
import { RosterAdminMutation } from './RosterAdminMutation';
import { LeagueService } from '@/lib/services/leagues/LeagueService';
import { Result } from '@/lib/contracts/Result';

// Mock dependencies
vi.mock('@/lib/services/leagues/LeagueService', () => {
  return {
    LeagueService: vi.fn(),
  };
});

vi.mock('@/lib/gateways/api/leagues/LeaguesApiClient', () => {
  return {
    LeaguesApiClient: vi.fn(),
  };
});

vi.mock('@/lib/infrastructure/logging/ConsoleErrorReporter', () => {
  return {
    ConsoleErrorReporter: vi.fn(),
  };
});

vi.mock('@/lib/infrastructure/logging/ConsoleLogger', () => {
  return {
    ConsoleLogger: vi.fn(),
  };
});

describe('RosterAdminMutation', () => {
  let mutation: RosterAdminMutation;
  let mockServiceInstance: any;

  beforeEach(() => {
    vi.clearAllMocks();
    mockServiceInstance = {
      approveJoinRequest: vi.fn(),
      rejectJoinRequest: vi.fn(),
      updateMemberRole: vi.fn(),
      removeMember: vi.fn(),
    };
    // Use mockImplementation to return the instance
    (LeagueService as any).mockImplementation(function() {
      return mockServiceInstance;
    });
    mutation = new RosterAdminMutation();
  });

  describe('approveJoinRequest', () => {
    describe('happy paths', () => {
      it('should successfully approve join request', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        mockServiceInstance.approveJoinRequest.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.approveJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(result.unwrap()).toBeUndefined();
        expect(mockServiceInstance.approveJoinRequest).toHaveBeenCalledWith(leagueId, joinRequestId);
        expect(mockServiceInstance.approveJoinRequest).toHaveBeenCalledTimes(1);
      });
    });

    describe('failure modes', () => {
      it('should handle service failure during approval', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        const serviceError = new Error('Service error');
        mockServiceInstance.approveJoinRequest.mockRejectedValue(serviceError);

        // Act
        const result = await mutation.approveJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to approve join request');
        expect(mockServiceInstance.approveJoinRequest).toHaveBeenCalledTimes(1);
      });

      it('should handle service returning error result', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        const domainError = { type: 'serverError', message: 'Database connection failed' };
        mockServiceInstance.approveJoinRequest.mockResolvedValue(Result.err(domainError));

        // Act
        const result = await mutation.approveJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to approve join request');
        expect(mockServiceInstance.approveJoinRequest).toHaveBeenCalledTimes(1);
      });
    });

    describe('input validation', () => {
      it('should accept valid input', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        mockServiceInstance.approveJoinRequest.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.approveJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(mockServiceInstance.approveJoinRequest).toHaveBeenCalledTimes(1);
      });
    });
  });

  describe('rejectJoinRequest', () => {
    describe('happy paths', () => {
      it('should successfully reject join request', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        mockServiceInstance.rejectJoinRequest.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.rejectJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(result.unwrap()).toBeUndefined();
        expect(mockServiceInstance.rejectJoinRequest).toHaveBeenCalledWith(leagueId, joinRequestId);
        expect(mockServiceInstance.rejectJoinRequest).toHaveBeenCalledTimes(1);
      });
    });

    describe('failure modes', () => {
      it('should handle service failure during rejection', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        const serviceError = new Error('Service error');
        mockServiceInstance.rejectJoinRequest.mockRejectedValue(serviceError);

        // Act
        const result = await mutation.rejectJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to reject join request');
        expect(mockServiceInstance.rejectJoinRequest).toHaveBeenCalledTimes(1);
      });

      it('should handle service returning error result', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        const domainError = { type: 'serverError', message: 'Database connection failed' };
        mockServiceInstance.rejectJoinRequest.mockResolvedValue(Result.err(domainError));

        // Act
        const result = await mutation.rejectJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to reject join request');
        expect(mockServiceInstance.rejectJoinRequest).toHaveBeenCalledTimes(1);
      });
    });

    describe('input validation', () => {
      it('should accept valid input', async () => {
        // Arrange
        const leagueId = 'league-123';
        const joinRequestId = 'join-456';
        mockServiceInstance.rejectJoinRequest.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.rejectJoinRequest(leagueId, joinRequestId);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(mockServiceInstance.rejectJoinRequest).toHaveBeenCalledTimes(1);
      });
    });
  });

  describe('updateMemberRole', () => {
    describe('happy paths', () => {
      it('should successfully update member role to admin', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        const role = 'admin';
        mockServiceInstance.updateMemberRole.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.updateMemberRole(leagueId, driverId, role);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(result.unwrap()).toBeUndefined();
        expect(mockServiceInstance.updateMemberRole).toHaveBeenCalledWith(leagueId, driverId, role);
        expect(mockServiceInstance.updateMemberRole).toHaveBeenCalledTimes(1);
      });

      it('should successfully update member role to member', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        const role = 'member';
        mockServiceInstance.updateMemberRole.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.updateMemberRole(leagueId, driverId, role);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(result.unwrap()).toBeUndefined();
        expect(mockServiceInstance.updateMemberRole).toHaveBeenCalledWith(leagueId, driverId, role);
        expect(mockServiceInstance.updateMemberRole).toHaveBeenCalledTimes(1);
      });
    });

    describe('failure modes', () => {
      it('should handle service failure during role update', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        const role = 'admin';
        const serviceError = new Error('Service error');
        mockServiceInstance.updateMemberRole.mockRejectedValue(serviceError);

        // Act
        const result = await mutation.updateMemberRole(leagueId, driverId, role);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to update member role');
        expect(mockServiceInstance.updateMemberRole).toHaveBeenCalledTimes(1);
      });

      it('should handle service returning error result', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        const role = 'admin';
        const domainError = { type: 'serverError', message: 'Database connection failed' };
        mockServiceInstance.updateMemberRole.mockResolvedValue(Result.err(domainError));

        // Act
        const result = await mutation.updateMemberRole(leagueId, driverId, role);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to update member role');
        expect(mockServiceInstance.updateMemberRole).toHaveBeenCalledTimes(1);
      });
    });

    describe('input validation', () => {
      it('should accept valid input', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        const role = 'admin';
        mockServiceInstance.updateMemberRole.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.updateMemberRole(leagueId, driverId, role);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(mockServiceInstance.updateMemberRole).toHaveBeenCalledTimes(1);
      });
    });
  });

  describe('removeMember', () => {
    describe('happy paths', () => {
      it('should successfully remove member', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        mockServiceInstance.removeMember.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.removeMember(leagueId, driverId);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(result.unwrap()).toBeUndefined();
        expect(mockServiceInstance.removeMember).toHaveBeenCalledWith(leagueId, driverId);
        expect(mockServiceInstance.removeMember).toHaveBeenCalledTimes(1);
      });
    });

    describe('failure modes', () => {
      it('should handle service failure during member removal', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        const serviceError = new Error('Service error');
        mockServiceInstance.removeMember.mockRejectedValue(serviceError);

        // Act
        const result = await mutation.removeMember(leagueId, driverId);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to remove member');
        expect(mockServiceInstance.removeMember).toHaveBeenCalledTimes(1);
      });

      it('should handle service returning error result', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        const domainError = { type: 'serverError', message: 'Database connection failed' };
        mockServiceInstance.removeMember.mockResolvedValue(Result.err(domainError));

        // Act
        const result = await mutation.removeMember(leagueId, driverId);

        // Assert
        expect(result.isErr()).toBe(true);
        expect(result.getError()).toBe('Failed to remove member');
        expect(mockServiceInstance.removeMember).toHaveBeenCalledTimes(1);
      });
    });

    describe('input validation', () => {
      it('should accept valid input', async () => {
        // Arrange
        const leagueId = 'league-123';
        const driverId = 'driver-456';
        mockServiceInstance.removeMember.mockResolvedValue(Result.ok(undefined));

        // Act
        const result = await mutation.removeMember(leagueId, driverId);

        // Assert
        expect(result.isOk()).toBe(true);
        expect(mockServiceInstance.removeMember).toHaveBeenCalledTimes(1);
      });
    });
  });

  describe('service instantiation', () => {
    it('should create LeagueService instance', () => {
      // Arrange & Act
      const mutation = new RosterAdminMutation();

      // Assert
      expect(mutation).toBeInstanceOf(RosterAdminMutation);
    });
  });

  describe('result shape', () => {
    it('should return void on successful approval', async () => {
      // Arrange
      const leagueId = 'league-123';
      const joinRequestId = 'join-456';
      mockServiceInstance.approveJoinRequest.mockResolvedValue(Result.ok(undefined));

      // Act
      const result = await mutation.approveJoinRequest(leagueId, joinRequestId);

      // Assert
      expect(result.isOk()).toBe(true);
      expect(result.unwrap()).toBeUndefined();
    });

    it('should return void on successful rejection', async () => {
      // Arrange
      const leagueId = 'league-123';
      const joinRequestId = 'join-456';
      mockServiceInstance.rejectJoinRequest.mockResolvedValue(Result.ok(undefined));

      // Act
      const result = await mutation.rejectJoinRequest(leagueId, joinRequestId);

      // Assert
      expect(result.isOk()).toBe(true);
      expect(result.unwrap()).toBeUndefined();
    });

    it('should return void on successful role update', async () => {
      // Arrange
      const leagueId = 'league-123';
      const driverId = 'driver-456';
      const role = 'admin';
      mockServiceInstance.updateMemberRole.mockResolvedValue(Result.ok(undefined));

      // Act
      const result = await mutation.updateMemberRole(leagueId, driverId, role);

      // Assert
      expect(result.isOk()).toBe(true);
      expect(result.unwrap()).toBeUndefined();
    });

    it('should return void on successful member removal', async () => {
      // Arrange
      const leagueId = 'league-123';
      const driverId = 'driver-456';
      mockServiceInstance.removeMember.mockResolvedValue(Result.ok(undefined));

      // Act
      const result = await mutation.removeMember(leagueId, driverId);

      // Assert
      expect(result.isOk()).toBe(true);
      expect(result.unwrap()).toBeUndefined();
    });
  });
});