/**
 * Unit tests for tournament update functionality
 * Tests the allowTies field is properly saved when updating tournaments
 */

import { describe, it, expect, mock, beforeEach, afterAll } from 'bun:test';

// Create mock functions at module level
const eventFindUniqueMock = mock(async () => ({}));
const eventUpdateMock = mock(async () => ({}));
const canManageTournamentMock = mock(async () => ({ allowed: true }));
const canDeleteTournamentMock = mock(async () => ({ allowed: true }));

// Mock prisma first
mock.module('@/lib/prisma', () => ({
  prisma: {
    event: {
      findUnique: eventFindUniqueMock,
      update: eventUpdateMock,
    },
  },
}));

// Mock the permissions module
mock.module('@/lib/permissions', () => ({
  canManageTournament: canManageTournamentMock,
  canDeleteTournament: canDeleteTournamentMock,
}));

// Cleanup after all tests in this file
afterAll(() => {
  mock.restore('module');
});

// Import the route handler after mocking
import { PUT } from '@/app/api/tournaments/[id]/route';
import { prisma } from '@/lib/prisma';

describe('Tournament Update API', () => {
  beforeEach(() => {
    // Clear all mock history before each test
    eventFindUniqueMock.mockClear();
    eventUpdateMock.mockClear();
    canManageTournamentMock.mockClear();
    canDeleteTournamentMock.mockClear();
  });

  it('should update allowTies field when provided', async () => {
    // Mock existing tournament
    eventFindUniqueMock.mockImplementation(async () => ({
      id: 1,
      name: 'Test Tournament',
      allowTies: false,
      targetScore: 5,
      eventType: 'tournament',
      format: 'round_robin',
      status: 'planned',
      eventDate: null,
      description: null,
      maxParticipants: null,
      ownerId: null,
      createdAt: new Date(),
      updatedAt: new Date(),
      } as any));

    // Mock successful update
    eventUpdateMock.mockImplementation(async () => ({
      id: 1,
      name: 'Test Tournament',
      allowTies: true,
      targetScore: 5,
      eventType: 'tournament',
      format: 'round_robin',
      status: 'planned',
      eventDate: null,
      description: null,
      maxParticipants: null,
      ownerId: null,
      createdAt: new Date(),
      updatedAt: new Date(),
      } as any));

    const request = new Request('http://localhost/api/tournaments/1', {
      method: 'PUT',
      body: JSON.stringify({
        name: 'Test Tournament',
        allowTies: true,
        targetScore: 5,
      }),
    });

    const params = Promise.resolve({ id: '1' });
    const response = await PUT(request, { params });

    expect(response.status).toBe(200);
    expect(prisma.event.update).toHaveBeenCalledWith(
      expect.objectContaining({
        data: expect.objectContaining({
          allowTies: true,
        }),
      })
    );
  });

  it('should NOT modify allowTies when not provided in request', async () => {
    // Mock existing tournament
    eventFindUniqueMock.mockImplementation(async () => ({
      id: 1,
      name: 'Test Tournament',
      allowTies: true,  // This is the current value
      targetScore: 5,
      eventType: 'tournament',
      format: 'round_robin',
      status: 'planned',
      eventDate: null,
      description: null,
      maxParticipants: null,
      ownerId: null,
      createdAt: new Date(),
      updatedAt: new Date(),
      } as any));

    // Mock successful update (allowTies should remain unchanged)
    eventUpdateMock.mockImplementation(async () => ({
      id: 1,
      name: 'Test Tournament',
      allowTies: true,  // Should remain true, not reset to false
      targetScore: 5,
      eventType: 'tournament',
      format: 'round_robin',
      status: 'planned',
      eventDate: null,
      description: null,
      maxParticipants: null,
      ownerId: null,
      createdAt: new Date(),
      updatedAt: new Date(),
      } as any));

    const request = new Request('http://localhost/api/tournaments/1', {
      method: 'PUT',
      body: JSON.stringify({
        name: 'Test Tournament',
        targetScore: 5,
        // allowTies not provided - should NOT be modified
      }),
    });

    const params = Promise.resolve({ id: '1' });
    const response = await PUT(request, { params });

    expect(response.status).toBe(200);
    // When allowTies is not provided, it should NOT be in the update data
    // (it will keep its existing value in the database)
    expect(eventUpdateMock.mock.calls.length).toBeGreaterThan(0);
    const updateCallArgs = (eventUpdateMock.mock.calls as any[][])[0];
    expect(updateCallArgs).toBeDefined();
    if (updateCallArgs && updateCallArgs[0]) {
      const updateData = updateCallArgs[0];
      expect((updateData as any).data.allowTies).toBeUndefined();
      expect((updateData as any).data.name).toBe('Test Tournament');
      expect((updateData as any).data.targetScore).toBe(5);
    }
  });

  it('should preserve allowTies value when updating other fields', async () => {
    // Mock existing tournament with allowTies = true
    eventFindUniqueMock.mockImplementation(async () => ({
      id: 1,
      name: 'Test Tournament',
      allowTies: true,
      targetScore: 5,
      eventType: 'tournament',
      format: 'round_robin',
      status: 'planned',
      eventDate: null,
      description: null,
      maxParticipants: null,
      ownerId: null,
      createdAt: new Date(),
      updatedAt: new Date(),
      } as any));

    // Mock successful update
    eventUpdateMock.mockImplementation(async () => ({
      id: 1,
      name: 'Updated Tournament Name',
      allowTies: true,
      targetScore: 10,
      eventType: 'tournament',
      format: 'round_robin',
      status: 'planned',
      eventDate: null,
      description: null,
      maxParticipants: null,
      ownerId: null,
      createdAt: new Date(),
      updatedAt: new Date(),
      } as any));

    const request = new Request('http://localhost/api/tournaments/1', {
      method: 'PUT',
      body: JSON.stringify({
        name: 'Updated Tournament Name',
        allowTies: true,
        targetScore: 10,
      }),
    });

    const params = Promise.resolve({ id: '1' });
    const response = await PUT(request, { params });

    expect(response.status).toBe(200);
    const updateCallArgs = (eventUpdateMock.mock.calls as any[][])[0];
    expect(updateCallArgs).toBeDefined();
    if (updateCallArgs && updateCallArgs[0]) {
      const updateData = updateCallArgs[0];
      expect((updateData as any).data.allowTies).toBe(true);
      expect((updateData as any).data.name).toBe('Updated Tournament Name');
      expect((updateData as any).data.targetScore).toBe(10);
    }
  });
});