import { afterAll, beforeAll, beforeEach, describe, expect, test } from 'bun:test';
import { HttpClient, HttpError, ProxyManager } from '../src/index';
import type { ProxyInfo } from '../src/types';
import { MockServer } from './mock-server';

// Global mock server instance
let mockServer: MockServer;
let mockServerBaseUrl: string;

beforeAll(async () => {
  // Start mock server for all tests
  mockServer = new MockServer();
  await mockServer.start();
  mockServerBaseUrl = mockServer.getBaseUrl();
});

afterAll(async () => {
  // Stop mock server
  await mockServer.stop();
});

describe('HttpClient', () => {
  let client: HttpClient;

  beforeEach(() => {
    client = new HttpClient();
  });

  describe('Basic functionality', () => {
    test('should create client with default config', () => {
      expect(client).toBeInstanceOf(HttpClient);
    });

    test('should make GET request', async () => {
      const response = await client.get(`${mockServerBaseUrl}/`);

      expect(response.status).toBe(200);
      expect(response.data).toHaveProperty('url');
      expect(response.data).toHaveProperty('method', 'GET');
    });

    test('should make POST request with body', async () => {
      const testData = {
        title: 'Test Post',
        body: 'Test body',
        userId: 1,
      };

      const response = await client.post(`${mockServerBaseUrl}/post`, testData);

      expect(response.status).toBe(200);
      expect(response.data).toHaveProperty('data');
      expect(response.data.data).toEqual(testData);
    });

    test('should handle custom headers', async () => {
      const customHeaders = {
        'X-Custom-Header': 'test-value',
        'User-Agent': 'StockBot-HTTP-Client/1.0',
      };

      const response = await client.get(`${mockServerBaseUrl}/headers`, {
        headers: customHeaders,
      });

      expect(response.status).toBe(200);
      expect(response.data.headers).toHaveProperty('x-custom-header', 'test-value');
      expect(response.data.headers).toHaveProperty('user-agent', 'StockBot-HTTP-Client/1.0');
    });

    test('should handle timeout', async () => {
      const clientWithTimeout = new HttpClient({ timeout: 1 }); // 1ms timeout

      await expect(clientWithTimeout.get('https://httpbin.org/delay/1')).rejects.toThrow();
    });
  });
  describe('Error handling', () => {
    test('should handle HTTP errors', async () => {
      await expect(client.get(`${mockServerBaseUrl}/status/404`)).rejects.toThrow(HttpError);
    });

    test('should handle network errors gracefully', async () => {
      await expect(
        client.get('https://nonexistent-domain-that-will-fail-12345.test')
      ).rejects.toThrow();
    });

    test('should handle invalid URLs', async () => {
      await expect(client.get('not:/a:valid/url')).rejects.toThrow();
    });
  });

  describe('HTTP methods', () => {
    test('should make PUT request', async () => {
      const testData = { id: 1, name: 'Updated' };
      const response = await client.put(`${mockServerBaseUrl}/post`, testData);
      expect(response.status).toBe(200);
    });

    test('should make DELETE request', async () => {
      const response = await client.del(`${mockServerBaseUrl}/`);
      expect(response.status).toBe(200);
      expect(response.data.method).toBe('DELETE');
    });

    test('should make PATCH request', async () => {
      const testData = { name: 'Patched' };
      const response = await client.patch(`${mockServerBaseUrl}/post`, testData);
      expect(response.status).toBe(200);
    });
  });
});

describe('ProxyManager', () => {
  test('should determine when to use Bun fetch', () => {
    const httpProxy: ProxyInfo = {
      protocol: 'http',
      host: 'proxy.example.com',
      port: 8080,
    };

    const socksProxy: ProxyInfo = {
      protocol: 'socks5',
      host: 'proxy.example.com',
      port: 1080,
    };

    expect(ProxyManager.shouldUseBunFetch(httpProxy)).toBe(true);
    expect(ProxyManager.shouldUseBunFetch(socksProxy)).toBe(false);
  });

  test('should create proxy URL for Bun fetch', () => {
    const proxy: ProxyInfo = {
      protocol: 'http',
      host: 'proxy.example.com',
      port: 8080,
      username: 'user',
      password: 'pass',
    };

    const proxyUrl = ProxyManager.createProxyUrl(proxy);
    expect(proxyUrl).toBe('http://user:pass@proxy.example.com:8080');
  });

  test('should create proxy URL without credentials', () => {
    const proxy: ProxyInfo = {
      protocol: 'https',
      host: 'proxy.example.com',
      port: 8080,
    };

    const proxyUrl = ProxyManager.createProxyUrl(proxy);
    expect(proxyUrl).toBe('https://proxy.example.com:8080');
  });
});