import { describe, it, expect, beforeEach, vi } from 'vitest';
import { EmailNotificationAdapter } from './EmailNotificationGateway';
import { Notification } from '@core/notifications/domain/entities/Notification';

describe('EmailNotificationAdapter', () => {
  const config = {
    smtpHost: 'smtp.example.com',
    fromAddress: 'noreply@gridpilot.com',
  };
  let adapter: EmailNotificationAdapter;

  beforeEach(() => {
    adapter = new EmailNotificationAdapter(config);
    vi.spyOn(console, 'log').mockImplementation(() => {});
  });

  const createNotification = (overrides: any = {}) => {
    return Notification.create({
      id: 'notif-123',
      recipientId: 'driver-456',
      type: 'protest_filed',
      title: 'New Protest',
      body: 'A new protest has been filed against you.',
      channel: 'email',
      ...overrides,
    });
  };

  describe('send', () => {
    it('should return success when configured', async () => {
      // Given
      const notification = createNotification();

      // When
      const result = await adapter.send(notification);

      // Then
      expect(result.success).toBe(true);
      expect(result.channel).toBe('email');
      expect(result.externalId).toContain('email-stub-');
      expect(result.attemptedAt).toBeInstanceOf(Date);
    });

    it('should return failure when not configured', async () => {
      // Given
      const unconfiguredAdapter = new EmailNotificationAdapter();
      const notification = createNotification();

      // When
      const result = await unconfiguredAdapter.send(notification);

      // Then
      expect(result.success).toBe(false);
      expect(result.error).toBe('Email SMTP not configured');
    });
  });

  describe('supportsChannel', () => {
    it('should return true for email channel', () => {
      expect(adapter.supportsChannel('email')).toBe(true);
    });

    it('should return false for other channels', () => {
      expect(adapter.supportsChannel('discord' as any)).toBe(false);
    });
  });

  describe('isConfigured', () => {
    it('should return true when smtpHost and fromAddress are set', () => {
      expect(adapter.isConfigured()).toBe(true);
    });

    it('should return false when config is missing', () => {
      const unconfigured = new EmailNotificationAdapter();
      expect(unconfigured.isConfigured()).toBe(false);
    });
  });

  describe('configure', () => {
    it('should update the configuration', () => {
      const unconfigured = new EmailNotificationAdapter();
      unconfigured.configure(config);
      expect(unconfigured.isConfigured()).toBe(true);
    });
  });
});