"""
Verify SMS notification implementation for complaints

This script verifies that the SMS notification feature has been properly implemented
by checking the code structure and key components.
"""
import os
import sys

def check_file_exists(filepath, description):
    """Check if a file exists and report"""
    if os.path.exists(filepath):
        print(f"✓ {description}: {filepath}")
        return True
    else:
        print(f"✗ {description} NOT FOUND: {filepath}")
        return False

def check_file_contains(filepath, content, description):
    """Check if a file contains specific content"""
    try:
        with open(filepath, 'r') as f:
            file_content = f.read()
            if content in file_content:
                print(f"  ✓ {description}")
                return True
            else:
                print(f"  ✗ {description} NOT FOUND")
                return False
    except FileNotFoundError:
        print(f"  ✗ File not found: {filepath}")
        return False

def verify_implementation():
    """Verify the SMS notification implementation"""
    print("=" * 70)
    print("Verifying Complaint SMS Notification Implementation")
    print("=" * 70)
    print()
    
    all_checks_passed = True
    
    # Check 1: signals.py file exists
    print("1. Checking signals.py file...")
    if check_file_exists('apps/complaints/signals.py', 'Signal handlers file'):
        # Check for key signal handlers
        check_file_contains(
            'apps/complaints/signals.py',
            'def send_complaint_creation_sms',
            '  Creation SMS handler'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            'def send_complaint_status_change_sms',
            '  Status change SMS handler'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            'NotificationService.send_sms',
            '  NotificationService integration'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            "tracking_url': instance.get_tracking_url()",
            '  Tracking URL in SMS'
        )
    else:
        all_checks_passed = False
    print()
    
    # Check 2: apps.py connects signals
    print("2. Checking apps.py signal connection...")
    if check_file_exists('apps/complaints/apps.py', 'Apps configuration'):
        check_file_contains(
            'apps/complaints/apps.py',
            'import apps.complaints.signals',
            '  Signals imported in ready()'
        )
    else:
        all_checks_passed = False
    print()
    
    # Check 3: models.py has get_tracking_url() method
    print("3. Checking models.py tracking URL method...")
    if check_file_exists('apps/complaints/models.py', 'Complaint models'):
        check_file_contains(
            'apps/complaints/models.py',
            'def get_tracking_url(self):',
            '  get_tracking_url() method'
        )
        check_file_contains(
            'apps/complaints/models.py',
            'self._status_was = old_instance.status',
            '  Status tracking in save()'
        )
    else:
        all_checks_passed = False
    print()
    
    # Check 4: Check SMS messages are bilingual
    print("4. Checking bilingual SMS messages...")
    if check_file_exists('apps/complaints/signals.py', 'Signal handlers'):
        check_file_contains(
            'apps/complaints/signals.py',
            "'en':",
            '  English SMS messages'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            "'ar':",
            '  Arabic SMS messages'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            "'resolved':",
            '  Resolved status message'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            "'closed':",
            '  Closed status message'
        )
    else:
        all_checks_passed = False
    print()
    
    # Check 5: Check error handling
    print("5. Checking error handling...")
    if check_file_exists('apps/complaints/signals.py', 'Signal handlers'):
        check_file_contains(
            'apps/complaints/signals.py',
            'except Exception as e:',
            '  Exception handling'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            'logger.error',
            '  Error logging'
        )
    else:
        all_checks_passed = False
    print()
    
    # Check 6: Check ComplaintUpdate tracking
    print("6. Checking ComplaintUpdate tracking...")
    if check_file_exists('apps/complaints/signals.py', 'Signal handlers'):
        check_file_contains(
            'apps/complaints/signals.py',
            "ComplaintUpdate.objects.create(",
            '  ComplaintUpdate creation'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            "update_type='communication'",
            '  Communication type tracking'
        )
    else:
        all_checks_passed = False
    print()
    
    # Check 7: Check phone number validation
    print("7. Checking phone number validation...")
    if check_file_exists('apps/complaints/signals.py', 'Signal handlers'):
        check_file_contains(
            'apps/complaints/signals.py',
            'if not instance.contact_phone:',
            '  Phone number check'
        )
        check_file_contains(
            'apps/complaints/signals.py',
            'Skipping SMS',
            '  Skip SMS when no phone'
        )
    else:
        all_checks_passed = False
    print()
    
    # Summary
    print("=" * 70)
    if all_checks_passed:
        print("✓ SMS Notification Implementation: VERIFIED")
        print()
        print("Summary of Implementation:")
        print("- Automatic SMS on complaint creation (with tracking URL)")
        print("- Automatic SMS on status change to resolved")
        print("- Automatic SMS on status change to closed")
        print("- Bilingual SMS messages (English/Arabic)")
        print("- Phone number validation (no SMS if no phone provided)")
        print("- Error handling (SMS failures don't break complaint save)")
        print("- ComplaintUpdate tracking for all SMS notifications")
        print("- Status change detection (only sends on actual status changes)")
        print("=" * 70)
        return 0
    else:
        print("✗ SMS Notification Implementation: INCOMPLETE")
        print("=" * 70)
        return 1

if __name__ == '__main__':
    exit_code = verify_implementation()
    sys.exit(exit_code)