/**
 * WSDC Controller Tests (Phase 1.5)
 * Tests for WSDC API proxy functionality
 */

const request = require('supertest');
const app = require('../app');

// Mock fetch globally
global.fetch = jest.fn();

describe('WSDC Controller Tests (Phase 1.5)', () => {
  beforeEach(() => {
    fetch.mockClear();
  });

  describe('GET /api/wsdc/lookup', () => {
    it('should lookup dancer by WSDC ID successfully', async () => {
      const mockDancerData = {
        dancer_wsdcid: 26997,
        dancer_first: 'Radoslaw',
        dancer_last: 'Gierwialo',
        recent_year: 2025
      };

      fetch.mockResolvedValue({
        ok: true,
        json: async () => mockDancerData
      });

      const response = await request(app)
        .get('/api/wsdc/lookup?id=26997');

      expect(response.status).toBe(200);
      expect(response.body.success).toBe(true);
      expect(response.body.dancer).toMatchObject({
        wsdcId: 26997,
        firstName: 'Radoslaw',
        lastName: 'Gierwialo'
      });
    });

    it('should return 400 if WSDC ID is missing', async () => {
      const response = await request(app)
        .get('/api/wsdc/lookup');

      expect(response.status).toBe(400);
      expect(response.body.error).toBe('Bad Request');
      expect(response.body.message).toContain('WSDC ID is required');
    });

    it('should return 400 for invalid WSDC ID format', async () => {
      const response = await request(app)
        .get('/api/wsdc/lookup?id=abc123');

      expect(response.status).toBe(400);
      expect(response.body.error).toBe('Bad Request');
      expect(response.body.message).toContain('Invalid WSDC ID format');
    });

    it('should return 400 for WSDC ID too long', async () => {
      const response = await request(app)
        .get('/api/wsdc/lookup?id=12345678901'); // 11 digits

      expect(response.status).toBe(400);
      expect(response.body.error).toBe('Bad Request');
    });

    it('should return 404 if dancer not found', async () => {
      fetch.mockResolvedValue({
        ok: true,
        json: async () => ({}) // Empty response
      });

      const response = await request(app)
        .get('/api/wsdc/lookup?id=99999');

      expect(response.status).toBe(404);
      expect(response.body.error).toBe('Not Found');
      expect(response.body.message).toContain('not found');
    });

    it('should return 502 if WSDC API fails', async () => {
      fetch.mockResolvedValue({
        ok: false,
        status: 500,
        statusText: 'Internal Server Error'
      });

      const response = await request(app)
        .get('/api/wsdc/lookup?id=26997');

      expect(response.status).toBe(502);
      expect(response.body.error).toBe('Bad Gateway');
    });

    it('should handle network errors', async () => {
      fetch.mockRejectedValue(new Error('Network error'));

      const response = await request(app)
        .get('/api/wsdc/lookup?id=26997');

      expect(response.status).toBe(500);
      expect(response.body.error).toBe('Internal Server Error');
    });

    it('should call WSDC API with correct URL', async () => {
      fetch.mockResolvedValue({
        ok: true,
        json: async () => ({
          dancer_wsdcid: 26997,
          dancer_first: 'Test',
          dancer_last: 'User'
        })
      });

      await request(app)
        .get('/api/wsdc/lookup?id=26997');

      expect(fetch).toHaveBeenCalledWith(
        'https://points.worldsdc.com/lookup2020/find?q=26997'
      );
    });

    it('should validate numeric WSDC IDs only', async () => {
      const invalidIds = ['abc', '123abc', 'test', '!@#$'];

      for (const id of invalidIds) {
        const response = await request(app)
          .get(`/api/wsdc/lookup?id=${id}`);

        expect(response.status).toBe(400);
      }
    });

    it('should accept valid numeric WSDC IDs', async () => {
      fetch.mockResolvedValue({
        ok: true,
        json: async () => ({
          dancer_wsdcid: 123,
          dancer_first: 'Test',
          dancer_last: 'User'
        })
      });

      const validIds = ['1', '123', '12345', '1234567890'];

      for (const id of validIds) {
        const response = await request(app)
          .get(`/api/wsdc/lookup?id=${id}`);

        expect(response.status).toBe(200);
      }
    });

    it('should include optional fields if available', async () => {
      const mockDancerData = {
        dancer_wsdcid: 26997,
        dancer_first: 'Radoslaw',
        dancer_last: 'Gierwialo',
        recent_year: 2025,
        dominate_data: {
          short_dominate_role: 'Leader'
        }
      };

      fetch.mockResolvedValue({
        ok: true,
        json: async () => mockDancerData
      });

      const response = await request(app)
        .get('/api/wsdc/lookup?id=26997');

      expect(response.status).toBe(200);
      expect(response.body.dancer.recentYear).toBe(2025);
      expect(response.body.dancer.dominateRole).toBe('Leader');
    });

    it('should handle missing optional fields gracefully', async () => {
      const mockDancerData = {
        dancer_wsdcid: 26997,
        dancer_first: 'Test',
        dancer_last: 'User'
        // No recent_year or dominate_data
      };

      fetch.mockResolvedValue({
        ok: true,
        json: async () => mockDancerData
      });

      const response = await request(app)
        .get('/api/wsdc/lookup?id=26997');

      expect(response.status).toBe(200);
      expect(response.body.dancer.dominateRole).toBeNull();
    });

    it('should log errors for debugging', async () => {
      const consoleSpy = jest.spyOn(console, 'error').mockImplementation();

      fetch.mockRejectedValue(new Error('Test error'));

      await request(app)
        .get('/api/wsdc/lookup?id=26997');

      expect(consoleSpy).toHaveBeenCalled();
      consoleSpy.mockRestore();
    });
  });
});