import { describe, it, expect, beforeAll } from '@jest/globals';
import { EmailService, SMSService, PushService } from '@shieldai/shared-notifications';

describe('Notification Integration Tests', () => {
  let emailService: EmailService;
  let smsService: SMSService;
  let pushService: PushService;

  beforeAll(() => {
    emailService = EmailService.getInstance();
    smsService = SMSService.getInstance();
    pushService = PushService.getInstance();
  });

  describe('Email Service', () => {
    it('should validate email notification structure', () => {
      const notification = {
        channel: 'email' as const,
        to: 'test@example.com',
        subject: 'Test Subject',
        htmlBody: '<h1>Test</h1>',
        textBody: 'Test',
      };

      expect(notification.channel).toBe('email');
      expect(notification.to).toMatch(/^[^\s@]+@[^\s@]+\.[^\s@]+$/);
      expect(notification.subject).toBeTruthy();
      expect(notification.htmlBody).toBeTruthy();
    });

    it('should handle rate limiting', async () => {
      const rateLimit = emailService.getRateLimitStatus();
      
      expect(rateLimit.limit).toBeGreaterThan(0);
      expect(rateLimit.remaining).toBeLessThanOrEqual(rateLimit.limit);
    });
  });

  describe('SMS Service', () => {
    it('should validate SMS notification structure', () => {
      const notification = {
        channel: 'sms' as const,
        to: '+1234567890',
        body: 'Test message',
      };

      expect(notification.channel).toBe('sms');
      expect(notification.to).toMatch(/^\+?\d{10,15}$/);
      expect(notification.body).toBeTruthy();
    });

    it('should handle rate limiting', async () => {
      const rateLimit = smsService.getRateLimitStatus();
      
      expect(rateLimit.limit).toBeGreaterThan(0);
      expect(rateLimit.remaining).toBeLessThanOrEqual(rateLimit.limit);
    });
  });

  describe('Push Service', () => {
    it('should validate push notification structure', () => {
      const notification = {
        channel: 'push' as const,
        userId: 'user_123',
        title: 'Test Title',
        body: 'Test Body',
        data: { key: 'value' },
      };

      expect(notification.channel).toBe('push');
      expect(notification.userId).toBeTruthy();
      expect(notification.title).toBeTruthy();
      expect(notification.body).toBeTruthy();
    });

    it('should handle rate limiting', async () => {
      const rateLimit = pushService.getRateLimitStatus();
      
      expect(rateLimit.limit).toBeGreaterThan(0);
      expect(rateLimit.remaining).toBeLessThanOrEqual(rateLimit.limit);
    });
  });

  describe('Multi-Channel Notifications', () => {
    it('should support different channels for same user', async () => {
      const emailResult = await emailService.send({
        channel: 'email' as const,
        to: 'test@example.com',
        subject: 'Alert',
        htmlBody: '<p>Alert message</p>',
      });

      expect(emailResult.channel).toBe('email');
      expect(emailResult.notificationId).toBeTruthy();
    });
  });
});