"""
Test safe seeding with lock detection and retry logic
"""

import time
from django.core.management.base import BaseCommand
from django.db import connection
from django.db.utils import OperationalError, IntegrityError
from apps.hadis.models import HadisSect, HadisStatus, HadisTag


class Command(BaseCommand):
    help = 'Test safe seeding with lock detection'

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.retry_delay = 1  # seconds
        self.max_retries = 3

    def handle(self, **options):
        self.stdout.write("🧪 Testing safe seeding with lock detection...")
        
        # Check database status
        self.check_database_locks()
        
        # Test creating a few records
        self.test_sect_creation()
        self.test_status_creation()
        self.test_tag_creation()
        
        self.stdout.write(self.style.SUCCESS("✅ All tests completed successfully!"))

    def safe_execute_with_retry(self, operation_name, operation_func, *args, **kwargs):
        """Execute database operation with retry logic for handling locks"""
        for attempt in range(self.max_retries):
            try:
                self.stdout.write(f"  Attempting {operation_name} (attempt {attempt + 1}/{self.max_retries})")
                result = operation_func(*args, **kwargs)
                self.stdout.write(f"  ✓ {operation_name} completed successfully")
                return result
                
            except OperationalError as e:
                error_msg = str(e).lower()
                if 'database is locked' in error_msg or 'deadlock' in error_msg:
                    self.stdout.write(
                        self.style.WARNING(
                            f"  ⚠ Database lock detected in {operation_name}: {str(e)}"
                        )
                    )
                    if attempt < self.max_retries - 1:
                        self.stdout.write(f"  ⏳ Waiting {self.retry_delay} seconds before retry...")
                        time.sleep(self.retry_delay)
                        self.retry_delay = min(self.retry_delay * 1.5, 5)
                    else:
                        self.stdout.write(
                            self.style.ERROR(f"  ❌ Max retries reached for {operation_name}")
                        )
                        raise
                else:
                    self.stdout.write(
                        self.style.ERROR(f"  ❌ Non-lock error in {operation_name}: {str(e)}")
                    )
                    raise
                    
            except IntegrityError as e:
                if 'unique' in str(e).lower() or 'duplicate' in str(e).lower():
                    self.stdout.write(
                        self.style.WARNING(f"  ⚠ Record already exists in {operation_name}: {str(e)}")
                    )
                    return None
                else:
                    self.stdout.write(
                        self.style.ERROR(f"  ❌ Integrity error in {operation_name}: {str(e)}")
                    )
                    raise
                    
            except Exception as e:
                self.stdout.write(
                    self.style.ERROR(f"  ❌ Unexpected error in {operation_name}: {str(e)}")
                )
                raise

    def check_database_locks(self):
        """Check for existing database locks"""
        try:
            with connection.cursor() as cursor:
                cursor.execute("SELECT 1;")
                cursor.fetchone()
                self.stdout.write("✓ Database connection is working")
                
        except Exception as e:
            self.stdout.write(
                self.style.WARNING(f"Could not check database: {str(e)}")
            )

    def create_test_sect(self):
        """Create a test sect"""
        sect, created = HadisSect.objects.get_or_create(
            sect_type='test',
            defaults={
                'title': 'Test Sect',
                'is_active': True,
                'order': 999
            }
        )
        if created:
            self.stdout.write("    ✅ Created test sect")
        else:
            self.stdout.write("    ✓ Test sect already exists")
        return sect

    def create_test_status(self):
        """Create a test status"""
        status, created = HadisStatus.objects.get_or_create(
            title='Test Status',
            defaults={
                'color': 'blue',
                'order': 999
            }
        )
        if created:
            self.stdout.write("    ✅ Created test status")
        else:
            self.stdout.write("    ✓ Test status already exists")
        return status

    def create_test_tag(self):
        """Create a test tag"""
        tag, created = HadisTag.objects.get_or_create(
            title='Test Tag',
            defaults={'status': True}
        )
        if created:
            self.stdout.write("    ✅ Created test tag")
        else:
            self.stdout.write("    ✓ Test tag already exists")
        return tag

    def test_sect_creation(self):
        """Test sect creation with retry logic"""
        self.stdout.write("🕌 Testing sect creation...")
        self.safe_execute_with_retry("Create test sect", self.create_test_sect)

    def test_status_creation(self):
        """Test status creation with retry logic"""
        self.stdout.write("📊 Testing status creation...")
        self.safe_execute_with_retry("Create test status", self.create_test_status)

    def test_tag_creation(self):
        """Test tag creation with retry logic"""
        self.stdout.write("🏷️ Testing tag creation...")
        self.safe_execute_with_retry("Create test tag", self.create_test_tag)