#!/usr/bin/env python
"""
Integration test for newsletter with tracking.
Tests the full flow of generating a newsletter with tracking enabled.
"""

import sys
from pathlib import Path
from datetime import datetime

# Add backend directory to path
backend_dir = Path(__file__).parent.parent / 'backend'
sys.path.insert(0, str(backend_dir))

# Mock the tracking service to avoid database dependency
class MockTrackingService:
    """Mock tracking service for testing"""
    
    @staticmethod
    def create_newsletter_tracking(newsletter_id, subscriber_email, article_links=None):
        """Mock create_newsletter_tracking function"""
        link_tracking_map = {}
        
        if article_links:
            for i, article in enumerate(article_links):
                link_tracking_map[article['url']] = f"mock-link-{i}"
        
        return {
            'pixel_tracking_id': 'mock-pixel-123',
            'link_tracking_map': link_tracking_map,
            'newsletter_id': newsletter_id,
            'subscriber_email': subscriber_email
        }

# Import after setting up path
from tracking_integration import inject_tracking_pixel, replace_article_links, generate_tracking_urls
from jinja2 import Template


def test_newsletter_with_tracking():
    """Test generating a newsletter with tracking enabled"""
    print("\n" + "="*70)
    print("NEWSLETTER TRACKING INTEGRATION TEST")
    print("="*70)
    
    # Mock article data
    articles = [
        {
            'title': 'Munich Tech Summit Announces 2025 Dates',
            'author': 'Tech Reporter',
            'link': 'https://example.com/tech-summit',
            'summary': 'The annual Munich Tech Summit will return in 2025 with exciting new features.',
            'source': 'Munich Tech News',
            'published_at': datetime.now()
        },
        {
            'title': 'New Public Transport Routes Launched',
            'author': 'Transport Desk',
            'link': 'https://example.com/transport-routes',
            'summary': 'MVG announces three new bus routes connecting suburban areas.',
            'source': 'Munich Transport',
            'published_at': datetime.now()
        }
    ]
    
    # Configuration
    newsletter_id = 'test-newsletter-2025-11-11'
    subscriber_email = 'test@example.com'
    api_url = 'http://localhost:5001'
    
    print(f"\nNewsletter ID: {newsletter_id}")
    print(f"Subscriber: {subscriber_email}")
    print(f"Articles: {len(articles)}")
    print(f"API URL: {api_url}")
    
    # Step 1: Generate tracking URLs
    print("\n" + "-"*70)
    print("Step 1: Generate tracking data")
    print("-"*70)
    
    tracking_data = generate_tracking_urls(
        articles=articles,
        newsletter_id=newsletter_id,
        subscriber_email=subscriber_email,
        tracking_service=MockTrackingService
    )
    
    print(f"✓ Pixel tracking ID: {tracking_data['pixel_tracking_id']}")
    print(f"✓ Link tracking map: {len(tracking_data['link_tracking_map'])} links")
    for url, tracking_id in tracking_data['link_tracking_map'].items():
        print(f"  - {url} → {tracking_id}")
    
    # Step 2: Load and render template
    print("\n" + "-"*70)
    print("Step 2: Render newsletter template")
    print("-"*70)
    
    template_path = Path(__file__).parent / 'newsletter_template.html'
    with open(template_path, 'r', encoding='utf-8') as f:
        template_content = f.read()
    
    template = Template(template_content)
    
    now = datetime.now()
    template_data = {
        'date': now.strftime('%A, %B %d, %Y'),
        'year': now.year,
        'article_count': len(articles),
        'articles': articles,
        'unsubscribe_link': 'http://localhost:3000/unsubscribe',
        'website_link': 'http://localhost:3000',
        'tracking_enabled': True
    }
    
    html = template.render(**template_data)
    print("✓ Template rendered")
    
    # Step 3: Inject tracking pixel
    print("\n" + "-"*70)
    print("Step 3: Inject tracking pixel")
    print("-"*70)
    
    html = inject_tracking_pixel(
        html,
        tracking_data['pixel_tracking_id'],
        api_url
    )
    
    pixel_url = f"{api_url}/api/track/pixel/{tracking_data['pixel_tracking_id']}"
    if pixel_url in html:
        print(f"✓ Tracking pixel injected: {pixel_url}")
    else:
        print(f"✗ Tracking pixel NOT found")
        return False
    
    # Step 4: Replace article links
    print("\n" + "-"*70)
    print("Step 4: Replace article links with tracking URLs")
    print("-"*70)
    
    html = replace_article_links(
        html,
        tracking_data['link_tracking_map'],
        api_url
    )
    
    # Verify all article links were replaced
    success = True
    for article in articles:
        original_url = article['link']
        tracking_id = tracking_data['link_tracking_map'].get(original_url)
        
        if tracking_id:
            tracking_url = f"{api_url}/api/track/click/{tracking_id}"
            if tracking_url in html:
                print(f"✓ Link replaced: {original_url}")
                print(f"  → {tracking_url}")
            else:
                print(f"✗ Link NOT replaced: {original_url}")
                success = False
        
        # Verify original URL is NOT in the HTML (should be replaced)
        if f'href="{original_url}"' in html:
            print(f"✗ Original URL still present: {original_url}")
            success = False
    
    # Step 5: Verify privacy notice
    print("\n" + "-"*70)
    print("Step 5: Verify privacy notice")
    print("-"*70)
    
    if "This email contains tracking to measure engagement" in html:
        print("✓ Privacy notice present in footer")
    else:
        print("✗ Privacy notice NOT found")
        success = False
    
    # Step 6: Save output for inspection
    print("\n" + "-"*70)
    print("Step 6: Save test output")
    print("-"*70)
    
    output_file = 'test_newsletter_with_tracking.html'
    with open(output_file, 'w', encoding='utf-8') as f:
        f.write(html)
    
    print(f"✓ Test newsletter saved to: {output_file}")
    print(f"  Open it in your browser to inspect the tracking integration")
    
    return success


if __name__ == '__main__':
    print("\n" + "="*70)
    print("TESTING NEWSLETTER WITH TRACKING")
    print("="*70)
    
    success = test_newsletter_with_tracking()
    
    print("\n" + "="*70)
    if success:
        print("✓ ALL TESTS PASSED")
        print("="*70 + "\n")
        sys.exit(0)
    else:
        print("✗ SOME TESTS FAILED")
        print("="*70 + "\n")
        sys.exit(1)