from abc import ABC, abstractmethod

class BasePlatform(ABC):
    """Abstract base class for marketplace platforms"""
    
    def __init__(self, item_monitor):
        """
        Initialize platform with item monitoring configuration
        
        Args:
            item_monitor: ItemMonitor instance with search parameters
        """
        self._item_monitor = item_monitor
    
    @abstractmethod
    def get_platform_name(self):
        """
        Get the name of the platform
        
        Returns:
            str: Platform name (e.g., 'wallapop', 'vinted', 'buyee')
        """
        pass
    
    @abstractmethod
    def create_url(self):
        """
        Create the search URL based on item_monitor parameters
        
        Returns:
            str: Complete URL for API/search request
        """
        pass
    
    @abstractmethod
    def fetch_articles(self):
        """
        Fetch articles from the platform
        
        Returns:
            list: List of Article objects
        """
        pass
    
    @abstractmethod
    def parse_response(self, response_data):
        """
        Parse platform-specific response into Article objects
        
        Args:
            response_data: Raw response data from the platform
            
        Returns:
            list: List of Article objects
        """
        pass
    
    def get_request_headers(self):
        """
        Get platform-specific request headers
        Override this method if platform needs custom headers
        
        Returns:
            dict: Headers for HTTP request
        """
        return {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36'
        }