import os
from typing import Union
from .config import (
    DEFAULT_PROVIDER,
    DEFAULT_PROVIDER_API_KEY,
    MIN_WORD_THRESHOLD,
    IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD,
    PROVIDER_MODELS,
    PROVIDER_MODELS_PREFIXES,
    SCREENSHOT_HEIGHT_TRESHOLD,
    PAGE_TIMEOUT,
    IMAGE_SCORE_THRESHOLD,
    SOCIAL_MEDIA_DOMAINS,
)

from .user_agent_generator import UAGen, ValidUAGenerator  # , OnlineUAGenerator
from .extraction_strategy import ExtractionStrategy, LLMExtractionStrategy
from .chunking_strategy import ChunkingStrategy, RegexChunking

from .markdown_generation_strategy import MarkdownGenerationStrategy, DefaultMarkdownGenerator
from .content_scraping_strategy import ContentScrapingStrategy, LXMLWebScrapingStrategy
from .deep_crawling import DeepCrawlStrategy

from .cache_context import CacheMode
from .proxy_strategy import ProxyRotationStrategy

from typing import Union, List, Callable
import inspect
from typing import Any, Dict, Optional
from enum import Enum

# Type alias for URL matching
UrlMatcher = Union[str, Callable[[str], bool], List[Union[str, Callable[[str], bool]]]]

class MatchMode(Enum):
    OR = "or"
    AND = "and"

# from .proxy_strategy import ProxyConfig



def to_serializable_dict(obj: Any, ignore_default_value : bool = False) -> Dict:
    """
    Recursively convert an object to a serializable dictionary using {type, params} structure
    for complex objects.
    """
    if obj is None:
        return None

    # Handle basic types
    if isinstance(obj, (str, int, float, bool)):
        return obj

    # Handle Enum
    if isinstance(obj, Enum):
        return {"type": obj.__class__.__name__, "params": obj.value}

    # Handle datetime objects
    if hasattr(obj, "isoformat"):
        return obj.isoformat()

    # Handle lists, tuples, and sets, and basically any iterable
    if isinstance(obj, (list, tuple, set)) or hasattr(obj, '__iter__') and not isinstance(obj, dict):
        return [to_serializable_dict(item) for item in obj]

    # Handle frozensets, which are not iterable
    if isinstance(obj, frozenset):
        return [to_serializable_dict(item) for item in list(obj)]

    # Handle dictionaries - preserve them as-is
    if isinstance(obj, dict):
        return {
            "type": "dict",  # Mark as plain dictionary
            "value": {str(k): to_serializable_dict(v) for k, v in obj.items()},
        }

    _type = obj.__class__.__name__

    # Handle class instances
    if hasattr(obj, "__class__"):
        # Get constructor signature
        sig = inspect.signature(obj.__class__.__init__)
        params = sig.parameters

        # Get current values
        current_values = {}
        for name, param in params.items():
            if name == "self":
                continue

            value = getattr(obj, name, param.default)

            # Only include if different from default, considering empty values
            if not (is_empty_value(value) and is_empty_value(param.default)):
                if value != param.default and not ignore_default_value:
                    current_values[name] = to_serializable_dict(value)
        
        if hasattr(obj, '__slots__'):
            for slot in obj.__slots__:
                if slot.startswith('_'):  # Handle private slots
                    attr_name = slot[1:]  # Remove leading '_'
                    value = getattr(obj, slot, None)
                    if value is not None:
                        current_values[attr_name] = to_serializable_dict(value)

            
        
        return {
            "type": obj.__class__.__name__,
            "params": current_values
        }
        
    return str(obj)


def from_serializable_dict(data: Any) -> Any:
    """
    Recursively convert a serializable dictionary back to an object instance.
    """
    if data is None:
        return None

    # Handle basic types
    if isinstance(data, (str, int, float, bool)):
        return data

    # Handle typed data
    if isinstance(data, dict) and "type" in data:
        # Handle plain dictionaries
        if data["type"] == "dict" and "value" in data:
            return {k: from_serializable_dict(v) for k, v in data["value"].items()}

        # Import from crawl4ai for class instances
        import crawl4ai

        if hasattr(crawl4ai, data["type"]):
            cls = getattr(crawl4ai, data["type"])

            # Handle Enum
            if issubclass(cls, Enum):
                return cls(data["params"])

            if "params" in data:
                # Handle class instances
                constructor_args = {
                    k: from_serializable_dict(v) for k, v in data["params"].items()
                }
                return cls(**constructor_args)

    # Handle lists
    if isinstance(data, list):
        return [from_serializable_dict(item) for item in data]

    # Handle raw dictionaries (legacy support)
    if isinstance(data, dict):
        return {k: from_serializable_dict(v) for k, v in data.items()}

    return data


def is_empty_value(value: Any) -> bool:
    """Check if a value is effectively empty/null."""
    if value is None:
        return True
    if isinstance(value, (list, tuple, set, dict, str)) and len(value) == 0:
        return True
    return False

class GeolocationConfig:
    def __init__(
        self,
        latitude: float,
        longitude: float,
        accuracy: Optional[float] = 0.0
    ):
        """Configuration class for geolocation settings.
        
        Args:
            latitude: Latitude coordinate (e.g., 37.7749)
            longitude: Longitude coordinate (e.g., -122.4194)
            accuracy: Accuracy in meters. Default: 0.0
        """
        self.latitude = latitude
        self.longitude = longitude
        self.accuracy = accuracy
    
    @staticmethod
    def from_dict(geo_dict: Dict) -> "GeolocationConfig":
        """Create a GeolocationConfig from a dictionary."""
        return GeolocationConfig(
            latitude=geo_dict.get("latitude"),
            longitude=geo_dict.get("longitude"),
            accuracy=geo_dict.get("accuracy", 0.0)
        )
    
    def to_dict(self) -> Dict:
        """Convert to dictionary representation."""
        return {
            "latitude": self.latitude,
            "longitude": self.longitude,
            "accuracy": self.accuracy
        }
    
    def clone(self, **kwargs) -> "GeolocationConfig":
        """Create a copy of this configuration with updated values.

        Args:
            **kwargs: Key-value pairs of configuration options to update

        Returns:
            GeolocationConfig: A new instance with the specified updates
        """
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return GeolocationConfig.from_dict(config_dict)

class ProxyConfig:
    def __init__(
        self,
        server: str,
        username: Optional[str] = None,
        password: Optional[str] = None,
        ip: Optional[str] = None,
    ):
        """Configuration class for a single proxy.
        
        Args:
            server: Proxy server URL (e.g., "http://127.0.0.1:8080")
            username: Optional username for proxy authentication
            password: Optional password for proxy authentication
            ip: Optional IP address for verification purposes
        """
        self.server = server
        self.username = username
        self.password = password
        
        # Extract IP from server if not explicitly provided
        self.ip = ip or self._extract_ip_from_server()
    
    def _extract_ip_from_server(self) -> Optional[str]:
        """Extract IP address from server URL."""
        try:
            # Simple extraction assuming http://ip:port format
            if "://" in self.server:
                parts = self.server.split("://")[1].split(":")
                return parts[0]
            else:
                parts = self.server.split(":")
                return parts[0]
        except Exception:
            return None
    
    @staticmethod
    def from_string(proxy_str: str) -> "ProxyConfig":
        """Create a ProxyConfig from a string in the format 'ip:port:username:password'."""
        parts = proxy_str.split(":")
        if len(parts) == 4:  # ip:port:username:password
            ip, port, username, password = parts
            return ProxyConfig(
                server=f"http://{ip}:{port}",
                username=username,
                password=password,
                ip=ip
            )
        elif len(parts) == 2:  # ip:port only
            ip, port = parts
            return ProxyConfig(
                server=f"http://{ip}:{port}",
                ip=ip
            )
        else:
            raise ValueError(f"Invalid proxy string format: {proxy_str}")
    
    @staticmethod
    def from_dict(proxy_dict: Dict) -> "ProxyConfig":
        """Create a ProxyConfig from a dictionary."""
        return ProxyConfig(
            server=proxy_dict.get("server"),
            username=proxy_dict.get("username"),
            password=proxy_dict.get("password"),
            ip=proxy_dict.get("ip")
        )
    
    @staticmethod
    def from_env(env_var: str = "PROXIES") -> List["ProxyConfig"]:
        """Load proxies from environment variable.
        
        Args:
            env_var: Name of environment variable containing comma-separated proxy strings
            
        Returns:
            List of ProxyConfig objects
        """
        proxies = []
        try:
            proxy_list = os.getenv(env_var, "").split(",")
            for proxy in proxy_list:
                if not proxy:
                    continue
                proxies.append(ProxyConfig.from_string(proxy))
        except Exception as e:
            print(f"Error loading proxies from environment: {e}")
        return proxies
    
    def to_dict(self) -> Dict:
        """Convert to dictionary representation."""
        return {
            "server": self.server,
            "username": self.username,
            "password": self.password,
            "ip": self.ip
        }
    
    def clone(self, **kwargs) -> "ProxyConfig":
        """Create a copy of this configuration with updated values.

        Args:
            **kwargs: Key-value pairs of configuration options to update

        Returns:
            ProxyConfig: A new instance with the specified updates
        """
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return ProxyConfig.from_dict(config_dict)

class BrowserConfig:
    """
    Configuration class for setting up a browser instance and its context in AsyncPlaywrightCrawlerStrategy.

    This class centralizes all parameters that affect browser and context creation. Instead of passing
    scattered keyword arguments, users can instantiate and modify this configuration object. The crawler
    code will then reference these settings to initialize the browser in a consistent, documented manner.

    Attributes:
        browser_type (str): The type of browser to launch. Supported values: "chromium", "firefox", "webkit".
                            Default: "chromium".
        headless (bool): Whether to run the browser in headless mode (no visible GUI).
                         Default: True.
        browser_mode (str): Determines how the browser should be initialized:
                           "builtin" - use the builtin CDP browser running in background
                           "dedicated" - create a new dedicated browser instance each time
                           "cdp" - use explicit CDP settings provided in cdp_url
                           "docker" - run browser in Docker container with isolation
                           Default: "dedicated"
        use_managed_browser (bool): Launch the browser using a managed approach (e.g., via CDP), allowing
                                    advanced manipulation. Default: False.
        cdp_url (str): URL for the Chrome DevTools Protocol (CDP) endpoint. Default: "ws://localhost:9222/devtools/browser/".
        debugging_port (int): Port for the browser debugging protocol. Default: 9222.
        use_persistent_context (bool): Use a persistent browser context (like a persistent profile).
                                       Automatically sets use_managed_browser=True. Default: False.
        user_data_dir (str or None): Path to a user data directory for persistent sessions. If None, a
                                     temporary directory may be used. Default: None.
        chrome_channel (str): The Chrome channel to launch (e.g., "chrome", "msedge"). Only applies if browser_type
                              is "chromium". Default: "chromium".
        channel (str): The channel to launch (e.g., "chromium", "chrome", "msedge"). Only applies if browser_type
                              is "chromium". Default: "chromium".
        proxy (Optional[str]): Proxy server URL (e.g., "http://username:password@proxy:port"). If None, no proxy is used.
                             Default: None.
        proxy_config (ProxyConfig or dict or None): Detailed proxy configuration, e.g. {"server": "...", "username": "..."}.
                                     If None, no additional proxy config. Default: None.
        viewport_width (int): Default viewport width for pages. Default: 1080.
        viewport_height (int): Default viewport height for pages. Default: 600.
        viewport (dict): Default viewport dimensions for pages. If set, overrides viewport_width and viewport_height.
                         Default: None.
        verbose (bool): Enable verbose logging.
                        Default: True.
        accept_downloads (bool): Whether to allow file downloads. If True, requires a downloads_path.
                                 Default: False.
        downloads_path (str or None): Directory to store downloaded files. If None and accept_downloads is True,
                                      a default path will be created. Default: None.
        storage_state (str or dict or None): An in-memory storage state (cookies, localStorage).
                                             Default: None.
        ignore_https_errors (bool): Ignore HTTPS certificate errors. Default: True.
        java_script_enabled (bool): Enable JavaScript execution in pages. Default: True.
        cookies (list): List of cookies to add to the browser context. Each cookie is a dict with fields like
                        {"name": "...", "value": "...", "url": "..."}.
                        Default: [].
        headers (dict): Extra HTTP headers to apply to all requests in this context.
                        Default: {}.
        user_agent (str): Custom User-Agent string to use. Default: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) "
                           "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36".
        user_agent_mode (str or None): Mode for generating the user agent (e.g., "random"). If None, use the provided
                                       user_agent as-is. Default: None.
        user_agent_generator_config (dict or None): Configuration for user agent generation if user_agent_mode is set.
                                                    Default: None.
        text_mode (bool): If True, disables images and other rich content for potentially faster load times.
                          Default: False.
        light_mode (bool): Disables certain background features for performance gains. Default: False.
        extra_args (list): Additional command-line arguments passed to the browser.
                           Default: [].
        enable_stealth (bool): If True, applies playwright-stealth to bypass basic bot detection.
                              Cannot be used with use_undetected browser mode. Default: False.
    """

    def __init__(
        self,
        browser_type: str = "chromium",
        headless: bool = True,
        browser_mode: str = "dedicated",
        use_managed_browser: bool = False,
        cdp_url: str = None,
        use_persistent_context: bool = False,
        user_data_dir: str = None,
        chrome_channel: str = "chromium",
        channel: str = "chromium",
        proxy: str = None,
        proxy_config: Union[ProxyConfig, dict, None] = None,
        viewport_width: int = 1080,
        viewport_height: int = 600,
        viewport: dict = None,
        accept_downloads: bool = False,
        downloads_path: str = None,
        storage_state: Union[str, dict, None] = None,
        ignore_https_errors: bool = True,
        java_script_enabled: bool = True,
        sleep_on_close: bool = False,
        verbose: bool = True,
        cookies: list = None,
        headers: dict = None,
        user_agent: str = (
            # "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) AppleWebKit/537.36 "
            # "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 "
            # "(KHTML, like Gecko) Chrome/116.0.5845.187 Safari/604.1 Edg/117.0.2045.47"
            "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 Chrome/116.0.0.0 Safari/537.36"
        ),
        user_agent_mode: str = "",
        user_agent_generator_config: dict = {},
        text_mode: bool = False,
        light_mode: bool = False,
        extra_args: list = None,
        debugging_port: int = 9222,
        host: str = "localhost",
        enable_stealth: bool = False,
    ):
        self.browser_type = browser_type
        self.headless = headless 
        self.browser_mode = browser_mode
        self.use_managed_browser = use_managed_browser
        self.cdp_url = cdp_url
        self.use_persistent_context = use_persistent_context
        self.user_data_dir = user_data_dir
        self.chrome_channel = chrome_channel or self.browser_type or "chromium"
        self.channel = channel or self.browser_type or "chromium"
        if self.browser_type in ["firefox", "webkit"]:
            self.channel = ""
            self.chrome_channel = ""
        self.proxy = proxy
        self.proxy_config = proxy_config


        self.viewport_width = viewport_width
        self.viewport_height = viewport_height
        self.viewport = viewport
        if self.viewport is not None:
            self.viewport_width = self.viewport.get("width", 1080)
            self.viewport_height = self.viewport.get("height", 600)
        self.accept_downloads = accept_downloads
        self.downloads_path = downloads_path
        self.storage_state = storage_state
        self.ignore_https_errors = ignore_https_errors
        self.java_script_enabled = java_script_enabled
        self.cookies = cookies if cookies is not None else []
        self.headers = headers if headers is not None else {}
        self.user_agent = user_agent
        self.user_agent_mode = user_agent_mode
        self.user_agent_generator_config = user_agent_generator_config
        self.text_mode = text_mode
        self.light_mode = light_mode
        self.extra_args = extra_args if extra_args is not None else []
        self.sleep_on_close = sleep_on_close
        self.verbose = verbose
        self.debugging_port = debugging_port
        self.host = host
        self.enable_stealth = enable_stealth

        fa_user_agenr_generator = ValidUAGenerator()
        if self.user_agent_mode == "random":
            self.user_agent = fa_user_agenr_generator.generate(
                **(self.user_agent_generator_config or {})
            )
        else:
            pass

        self.browser_hint = UAGen.generate_client_hints(self.user_agent)
        self.headers.setdefault("sec-ch-ua", self.browser_hint)

        # Set appropriate browser management flags based on browser_mode
        if self.browser_mode == "builtin":
            # Builtin mode uses managed browser connecting to builtin CDP endpoint
            self.use_managed_browser = True
            # cdp_url will be set later by browser_manager
        elif self.browser_mode == "docker":
            # Docker mode uses managed browser with CDP to connect to browser in container
            self.use_managed_browser = True
            # cdp_url will be set later by docker browser strategy
        elif self.browser_mode == "custom" and self.cdp_url:
            # Custom mode with explicit CDP URL
            self.use_managed_browser = True
        elif self.browser_mode == "dedicated":
            # Dedicated mode uses a new browser instance each time
            pass

        # If persistent context is requested, ensure managed browser is enabled
        if self.use_persistent_context:
            self.use_managed_browser = True
            
        # Validate stealth configuration
        if self.enable_stealth and self.use_managed_browser and self.browser_mode == "builtin":
            raise ValueError(
                "enable_stealth cannot be used with browser_mode='builtin'. "
                "Stealth mode requires a dedicated browser instance."
            )

    @staticmethod
    def from_kwargs(kwargs: dict) -> "BrowserConfig":
        return BrowserConfig(
            browser_type=kwargs.get("browser_type", "chromium"),
            headless=kwargs.get("headless", True),
            browser_mode=kwargs.get("browser_mode", "dedicated"),
            use_managed_browser=kwargs.get("use_managed_browser", False),
            cdp_url=kwargs.get("cdp_url"),
            use_persistent_context=kwargs.get("use_persistent_context", False),
            user_data_dir=kwargs.get("user_data_dir"),
            chrome_channel=kwargs.get("chrome_channel", "chromium"),
            channel=kwargs.get("channel", "chromium"),
            proxy=kwargs.get("proxy"),
            proxy_config=kwargs.get("proxy_config", None),
            viewport_width=kwargs.get("viewport_width", 1080),
            viewport_height=kwargs.get("viewport_height", 600),
            accept_downloads=kwargs.get("accept_downloads", False),
            downloads_path=kwargs.get("downloads_path"),
            storage_state=kwargs.get("storage_state"),
            ignore_https_errors=kwargs.get("ignore_https_errors", True),
            java_script_enabled=kwargs.get("java_script_enabled", True),
            cookies=kwargs.get("cookies", []),
            headers=kwargs.get("headers", {}),
            user_agent=kwargs.get(
                "user_agent",
                "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) "
                "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36",
            ),
            user_agent_mode=kwargs.get("user_agent_mode"),
            user_agent_generator_config=kwargs.get("user_agent_generator_config"),
            text_mode=kwargs.get("text_mode", False),
            light_mode=kwargs.get("light_mode", False),
            extra_args=kwargs.get("extra_args", []),
            debugging_port=kwargs.get("debugging_port", 9222),
            host=kwargs.get("host", "localhost"),
            enable_stealth=kwargs.get("enable_stealth", False),
        )

    def to_dict(self):
        result = {
            "browser_type": self.browser_type,
            "headless": self.headless,
            "browser_mode": self.browser_mode,
            "use_managed_browser": self.use_managed_browser,
            "cdp_url": self.cdp_url,
            "use_persistent_context": self.use_persistent_context,
            "user_data_dir": self.user_data_dir,
            "chrome_channel": self.chrome_channel,
            "channel": self.channel,
            "proxy": self.proxy,
            "proxy_config": self.proxy_config,
            "viewport_width": self.viewport_width,
            "viewport_height": self.viewport_height,
            "accept_downloads": self.accept_downloads,
            "downloads_path": self.downloads_path,
            "storage_state": self.storage_state,
            "ignore_https_errors": self.ignore_https_errors,
            "java_script_enabled": self.java_script_enabled,
            "cookies": self.cookies,
            "headers": self.headers,
            "user_agent": self.user_agent,
            "user_agent_mode": self.user_agent_mode,
            "user_agent_generator_config": self.user_agent_generator_config,
            "text_mode": self.text_mode,
            "light_mode": self.light_mode,
            "extra_args": self.extra_args,
            "sleep_on_close": self.sleep_on_close,
            "verbose": self.verbose,
            "debugging_port": self.debugging_port,
            "host": self.host,
            "enable_stealth": self.enable_stealth,
        }

                
        return result

    def clone(self, **kwargs):
        """Create a copy of this configuration with updated values.

        Args:
            **kwargs: Key-value pairs of configuration options to update

        Returns:
            BrowserConfig: A new instance with the specified updates
        """
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return BrowserConfig.from_kwargs(config_dict)

    # Create a funciton returns dict of the object
    def dump(self) -> dict:
        # Serialize the object to a dictionary
        return to_serializable_dict(self)

    @staticmethod
    def load(data: dict) -> "BrowserConfig":
        # Deserialize the object from a dictionary
        config = from_serializable_dict(data)
        if isinstance(config, BrowserConfig):
            return config
        return BrowserConfig.from_kwargs(config)

class VirtualScrollConfig:
    """Configuration for virtual scroll handling.
    
    This config enables capturing content from pages with virtualized scrolling
    (like Twitter, Instagram feeds) where DOM elements are recycled as user scrolls.
    """
    
    def __init__(
        self,
        container_selector: str,
        scroll_count: int = 10,
        scroll_by: Union[str, int] = "container_height",
        wait_after_scroll: float = 0.5,
    ):
        """
        Initialize virtual scroll configuration.
        
        Args:
            container_selector: CSS selector for the scrollable container
            scroll_count: Maximum number of scrolls to perform
            scroll_by: Amount to scroll - can be:
                - "container_height": scroll by container's height
                - "page_height": scroll by viewport height  
                - int: fixed pixel amount
            wait_after_scroll: Seconds to wait after each scroll for content to load
        """
        self.container_selector = container_selector
        self.scroll_count = scroll_count
        self.scroll_by = scroll_by
        self.wait_after_scroll = wait_after_scroll
    
    def to_dict(self) -> dict:
        """Convert to dictionary for serialization."""
        return {
            "container_selector": self.container_selector,
            "scroll_count": self.scroll_count,
            "scroll_by": self.scroll_by,
            "wait_after_scroll": self.wait_after_scroll,
        }
    
    @classmethod
    def from_dict(cls, data: dict) -> "VirtualScrollConfig":
        """Create instance from dictionary."""
        return cls(**data)

class LinkPreviewConfig:
    """Configuration for link head extraction and scoring."""
    
    def __init__(
        self,
        include_internal: bool = True,
        include_external: bool = False,
        include_patterns: Optional[List[str]] = None,
        exclude_patterns: Optional[List[str]] = None,
        concurrency: int = 10,
        timeout: int = 5,
        max_links: int = 100,
        query: Optional[str] = None,
        score_threshold: Optional[float] = None,
        verbose: bool = False
    ):
        """
        Initialize link extraction configuration.
        
        Args:
            include_internal: Whether to include same-domain links
            include_external: Whether to include different-domain links  
            include_patterns: List of glob patterns to include (e.g., ["*/docs/*", "*/api/*"])
            exclude_patterns: List of glob patterns to exclude (e.g., ["*/login*", "*/admin*"])
            concurrency: Number of links to process simultaneously
            timeout: Timeout in seconds for each link's head extraction
            max_links: Maximum number of links to process (prevents overload)
            query: Query string for BM25 contextual scoring (optional)
            score_threshold: Minimum relevance score to include links (0.0-1.0, optional)
            verbose: Show detailed progress during extraction
        """
        self.include_internal = include_internal
        self.include_external = include_external
        self.include_patterns = include_patterns
        self.exclude_patterns = exclude_patterns
        self.concurrency = concurrency
        self.timeout = timeout
        self.max_links = max_links
        self.query = query
        self.score_threshold = score_threshold
        self.verbose = verbose
        
        # Validation
        if concurrency <= 0:
            raise ValueError("concurrency must be positive")
        if timeout <= 0:
            raise ValueError("timeout must be positive")
        if max_links <= 0:
            raise ValueError("max_links must be positive")
        if score_threshold is not None and not (0.0 <= score_threshold <= 1.0):
            raise ValueError("score_threshold must be between 0.0 and 1.0")
        if not include_internal and not include_external:
            raise ValueError("At least one of include_internal or include_external must be True")
    
    @staticmethod
    def from_dict(config_dict: Dict[str, Any]) -> "LinkPreviewConfig":
        """Create LinkPreviewConfig from dictionary (for backward compatibility)."""
        if not config_dict:
            return None
        
        return LinkPreviewConfig(
            include_internal=config_dict.get("include_internal", True),
            include_external=config_dict.get("include_external", False),
            include_patterns=config_dict.get("include_patterns"),
            exclude_patterns=config_dict.get("exclude_patterns"),
            concurrency=config_dict.get("concurrency", 10),
            timeout=config_dict.get("timeout", 5),
            max_links=config_dict.get("max_links", 100),
            query=config_dict.get("query"),
            score_threshold=config_dict.get("score_threshold"),
            verbose=config_dict.get("verbose", False)
        )
    
    def to_dict(self) -> Dict[str, Any]:
        """Convert to dictionary format."""
        return {
            "include_internal": self.include_internal,
            "include_external": self.include_external,
            "include_patterns": self.include_patterns,
            "exclude_patterns": self.exclude_patterns,
            "concurrency": self.concurrency,
            "timeout": self.timeout,
            "max_links": self.max_links,
            "query": self.query,
            "score_threshold": self.score_threshold,
            "verbose": self.verbose
        }
    
    def clone(self, **kwargs) -> "LinkPreviewConfig":
        """Create a copy with updated values."""
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return LinkPreviewConfig.from_dict(config_dict)


class HTTPCrawlerConfig:
    """HTTP-specific crawler configuration"""

    method: str = "GET"
    headers: Optional[Dict[str, str]] = None
    data: Optional[Dict[str, Any]] = None
    json: Optional[Dict[str, Any]] = None
    follow_redirects: bool = True
    verify_ssl: bool = True

    def __init__(
        self,
        method: str = "GET",
        headers: Optional[Dict[str, str]] = None,
        data: Optional[Dict[str, Any]] = None,
        json: Optional[Dict[str, Any]] = None,
        follow_redirects: bool = True,
        verify_ssl: bool = True,
    ):
        self.method = method
        self.headers = headers
        self.data = data
        self.json = json
        self.follow_redirects = follow_redirects
        self.verify_ssl = verify_ssl

    @staticmethod
    def from_kwargs(kwargs: dict) -> "HTTPCrawlerConfig":
        return HTTPCrawlerConfig(
            method=kwargs.get("method", "GET"),
            headers=kwargs.get("headers"),
            data=kwargs.get("data"),
            json=kwargs.get("json"),
            follow_redirects=kwargs.get("follow_redirects", True),
            verify_ssl=kwargs.get("verify_ssl", True),
        )

    def to_dict(self):
        return {
            "method": self.method,
            "headers": self.headers,
            "data": self.data,
            "json": self.json,
            "follow_redirects": self.follow_redirects,
            "verify_ssl": self.verify_ssl,
        }

    def clone(self, **kwargs):
        """Create a copy of this configuration with updated values.

        Args:
            **kwargs: Key-value pairs of configuration options to update

        Returns:
            HTTPCrawlerConfig: A new instance with the specified updates
        """
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return HTTPCrawlerConfig.from_kwargs(config_dict)

    def dump(self) -> dict:
        return to_serializable_dict(self)

    @staticmethod
    def load(data: dict) -> "HTTPCrawlerConfig":
        config = from_serializable_dict(data)
        if isinstance(config, HTTPCrawlerConfig):
            return config
        return HTTPCrawlerConfig.from_kwargs(config)

class CrawlerRunConfig():
    _UNWANTED_PROPS = {
        'disable_cache' : 'Instead, use cache_mode=CacheMode.DISABLED',
        'bypass_cache' : 'Instead, use cache_mode=CacheMode.BYPASS',
        'no_cache_read' : 'Instead, use cache_mode=CacheMode.WRITE_ONLY',
        'no_cache_write' : 'Instead, use cache_mode=CacheMode.READ_ONLY',
    }

    """
    Configuration class for controlling how the crawler runs each crawl operation.
    This includes parameters for content extraction, page manipulation, waiting conditions,
    caching, and other runtime behaviors.

    This centralizes parameters that were previously scattered as kwargs to `arun()` and related methods.
    By using this class, you have a single place to understand and adjust the crawling options.

    Attributes:
        # Deep Crawl Parameters
        deep_crawl_strategy (DeepCrawlStrategy or None): Strategy to use for deep crawling.

        # Content Processing Parameters
        word_count_threshold (int): Minimum word count threshold before processing content.
                                    Default: MIN_WORD_THRESHOLD (typically 200).
        extraction_strategy (ExtractionStrategy or None): Strategy to extract structured data from crawled pages.
                                                          Default: None (NoExtractionStrategy is used if None).
        chunking_strategy (ChunkingStrategy): Strategy to chunk content before extraction.
                                              Default: RegexChunking().
        markdown_generator (MarkdownGenerationStrategy): Strategy for generating markdown.
                                                         Default: None.
        only_text (bool): If True, attempt to extract text-only content where applicable.
                          Default: False.
        css_selector (str or None): CSS selector to extract a specific portion of the page.
                                    Default: None.
        
        target_elements (list of str or None): List of CSS selectors for specific elements for Markdown generation 
                                                and structured data extraction. When you set this, only the contents 
                                                of these elements are processed for extraction and Markdown generation. 
                                                If you do not set any value, the entire page is processed. 
                                                The difference between this and css_selector is that this will shrink 
                                                the initial raw HTML to the selected element, while this will only affect 
                                                the extraction and Markdown generation.
                                    Default: None
        excluded_tags (list of str or None): List of HTML tags to exclude from processing.
                                             Default: None.
        excluded_selector (str or None): CSS selector to exclude from processing.
                                         Default: None.
        keep_data_attributes (bool): If True, retain `data-*` attributes while removing unwanted attributes.
                                     Default: False.
        keep_attrs (list of str): List of HTML attributes to keep during processing.
                                      Default: [].
        remove_forms (bool): If True, remove all `<form>` elements from the HTML.
                             Default: False.
        prettiify (bool): If True, apply `fast_format_html` to produce prettified HTML output.
                          Default: False.
        parser_type (str): Type of parser to use for HTML parsing.
                           Default: "lxml".
        scraping_strategy (ContentScrapingStrategy): Scraping strategy to use.
                           Default: LXMLWebScrapingStrategy.
        proxy_config (ProxyConfig or dict or None): Detailed proxy configuration, e.g. {"server": "...", "username": "..."}.
                                     If None, no additional proxy config. Default: None.

        # Browser Location and Identity Parameters
        locale (str or None): Locale to use for the browser context (e.g., "en-US").
                             Default: None.
        timezone_id (str or None): Timezone identifier to use for the browser context (e.g., "America/New_York").
                                  Default: None.
        geolocation (GeolocationConfig or None): Geolocation configuration for the browser.
                                                Default: None.

        # SSL Parameters
        fetch_ssl_certificate: bool = False,
        # Caching Parameters
        cache_mode (CacheMode or None): Defines how caching is handled.
                                        If None, defaults to CacheMode.ENABLED internally.
                                        Default: CacheMode.BYPASS.
        session_id (str or None): Optional session ID to persist the browser context and the created
                                  page instance. If the ID already exists, the crawler does not
                                  create a new page and uses the current page to preserve the state.
        bypass_cache (bool): Legacy parameter, if True acts like CacheMode.BYPASS.
                             Default: False.
        disable_cache (bool): Legacy parameter, if True acts like CacheMode.DISABLED.
                              Default: False.
        no_cache_read (bool): Legacy parameter, if True acts like CacheMode.WRITE_ONLY.
                              Default: False.
        no_cache_write (bool): Legacy parameter, if True acts like CacheMode.READ_ONLY.
                               Default: False.
        shared_data (dict or None): Shared data to be passed between hooks.
                                     Default: None.

        # Page Navigation and Timing Parameters
        wait_until (str): The condition to wait for when navigating, e.g. "domcontentloaded".
                          Default: "domcontentloaded".
        page_timeout (int): Timeout in ms for page operations like navigation.
                            Default: 60000 (60 seconds).
        wait_for (str or None): A CSS selector or JS condition to wait for before extracting content.
                                Default: None.
        wait_for_timeout (int or None): Specific timeout in ms for the wait_for condition.
                                       If None, uses page_timeout instead.
                                       Default: None.
        wait_for_images (bool): If True, wait for images to load before extracting content.
                                Default: False.
        delay_before_return_html (float): Delay in seconds before retrieving final HTML.
                                          Default: 0.1.
        mean_delay (float): Mean base delay between requests when calling arun_many.
                            Default: 0.1.
        max_range (float): Max random additional delay range for requests in arun_many.
                           Default: 0.3.
        semaphore_count (int): Number of concurrent operations allowed.
                               Default: 5.

        # Page Interaction Parameters
        js_code (str or list of str or None): JavaScript code/snippets to run on the page.
                                              Default: None.
        js_only (bool): If True, indicates subsequent calls are JS-driven updates, not full page loads.
                        Default: False.
        ignore_body_visibility (bool): If True, ignore whether the body is visible before proceeding.
                                       Default: True.
        scan_full_page (bool): If True, scroll through the entire page to load all content.
                               Default: False.
        scroll_delay (float): Delay in seconds between scroll steps if scan_full_page is True.
                              Default: 0.2.
        max_scroll_steps (Optional[int]): Maximum number of scroll steps to perform during full page scan.
                                         If None, scrolls until the entire page is loaded. Default: None.
        process_iframes (bool): If True, attempts to process and inline iframe content.
                                Default: False.
        remove_overlay_elements (bool): If True, remove overlays/popups before extracting HTML.
                                        Default: False.
        simulate_user (bool): If True, simulate user interactions (mouse moves, clicks) for anti-bot measures.
                              Default: False.
        override_navigator (bool): If True, overrides navigator properties for more human-like behavior.
                                   Default: False.
        magic (bool): If True, attempts automatic handling of overlays/popups.
                      Default: False.
        adjust_viewport_to_content (bool): If True, adjust viewport according to the page content dimensions.
                                           Default: False.

        # Media Handling Parameters
        screenshot (bool): Whether to take a screenshot after crawling.
                           Default: False.
        screenshot_wait_for (float or None): Additional wait time before taking a screenshot.
                                             Default: None.
        screenshot_height_threshold (int): Threshold for page height to decide screenshot strategy.
                                           Default: SCREENSHOT_HEIGHT_TRESHOLD (from config, e.g. 20000).
        pdf (bool): Whether to generate a PDF of the page.
                    Default: False.
        image_description_min_word_threshold (int): Minimum words for image description extraction.
                                                    Default: IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD (e.g., 50).
        image_score_threshold (int): Minimum score threshold for processing an image.
                                     Default: IMAGE_SCORE_THRESHOLD (e.g., 3).
        exclude_external_images (bool): If True, exclude all external images from processing.
                                         Default: False.
        table_score_threshold (int): Minimum score threshold for processing a table.
                                     Default: 7.

        # Virtual Scroll Parameters
        virtual_scroll_config (VirtualScrollConfig or dict or None): Configuration for handling virtual scroll containers.
                                                                     Used for capturing content from pages with virtualized 
                                                                     scrolling (e.g., Twitter, Instagram feeds).
                                                                     Default: None.

        # Link and Domain Handling Parameters
        exclude_social_media_domains (list of str): List of domains to exclude for social media links.
                                                    Default: SOCIAL_MEDIA_DOMAINS (from config).
        exclude_external_links (bool): If True, exclude all external links from the results.
                                       Default: False.
        exclude_internal_links (bool): If True, exclude internal links from the results.
                                       Default: False.
        exclude_social_media_links (bool): If True, exclude links pointing to social media domains.
                                           Default: False.
        exclude_domains (list of str): List of specific domains to exclude from results.
                                       Default: [].
        exclude_internal_links (bool): If True, exclude internal links from the results.
                                       Default: False.
        score_links (bool): If True, calculate intrinsic quality scores for all links using URL structure,
                           text quality, and contextual relevance metrics. Separate from link_preview_config.
                           Default: False.

        # Debugging and Logging Parameters
        verbose (bool): Enable verbose logging.
                        Default: True.
        log_console (bool): If True, log console messages from the page.
                            Default: False.

        # HTTP Crwler Strategy Parameters
        method (str): HTTP method to use for the request, when using AsyncHTTPCrwalerStrategy.
                        Default: "GET".
        data (dict): Data to send in the request body, when using AsyncHTTPCrwalerStrategy.
                        Default: None.
        json (dict): JSON data to send in the request body, when using AsyncHTTPCrwalerStrategy.

        # Connection Parameters
        stream (bool): If True, enables streaming of crawled URLs as they are processed when used with arun_many.
                      Default: False.

        check_robots_txt (bool): Whether to check robots.txt rules before crawling. Default: False
                                 Default: False.
        user_agent (str): Custom User-Agent string to use.
                          Default: None.
        user_agent_mode (str or None): Mode for generating the user agent (e.g., "random"). If None, use the provided user_agent as-is.
                                       Default: None.
        user_agent_generator_config (dict or None): Configuration for user agent generation if user_agent_mode is set.
                                                    Default: None.

        # Experimental Parameters
        experimental (dict): Dictionary containing experimental parameters that are in beta phase.
                            This allows passing temporary features that are not yet fully integrated 
                            into the main parameter set.
                            Default: None.

        url: str = None  # This is not a compulsory parameter
    """

    def __init__(
        self,
        # Content Processing Parameters
        word_count_threshold: int = MIN_WORD_THRESHOLD,
        extraction_strategy: ExtractionStrategy = None,
        chunking_strategy: ChunkingStrategy = RegexChunking(),
        markdown_generator: MarkdownGenerationStrategy = DefaultMarkdownGenerator(),
        only_text: bool = False,
        css_selector: str = None,
        target_elements: List[str] = None,
        excluded_tags: list = None,
        excluded_selector: str = None,
        keep_data_attributes: bool = False,
        keep_attrs: list = None,
        remove_forms: bool = False,
        prettiify: bool = False,
        parser_type: str = "lxml",
        scraping_strategy: ContentScrapingStrategy = None,
        proxy_config: Union[ProxyConfig, dict, None] = None,
        proxy_rotation_strategy: Optional[ProxyRotationStrategy] = None,
        # Browser Location and Identity Parameters
        locale: Optional[str] = None,
        timezone_id: Optional[str] = None,
        geolocation: Optional[GeolocationConfig] = None,
        # SSL Parameters
        fetch_ssl_certificate: bool = False,
        # Caching Parameters
        cache_mode: CacheMode = CacheMode.BYPASS,
        session_id: str = None,
        bypass_cache: bool = False,
        disable_cache: bool = False,
        no_cache_read: bool = False,
        no_cache_write: bool = False,
        shared_data: dict = None,
        # Page Navigation and Timing Parameters
        wait_until: str = "domcontentloaded",
        page_timeout: int = PAGE_TIMEOUT,
        wait_for: str = None,
        wait_for_timeout: int = None,
        wait_for_images: bool = False,
        delay_before_return_html: float = 0.1,
        mean_delay: float = 0.1,
        max_range: float = 0.3,
        semaphore_count: int = 5,
        # Page Interaction Parameters
        js_code: Union[str, List[str]] = None,
        c4a_script: Union[str, List[str]] = None,
        js_only: bool = False,
        ignore_body_visibility: bool = True,
        scan_full_page: bool = False,
        scroll_delay: float = 0.2,
        max_scroll_steps: Optional[int] = None,
        process_iframes: bool = False,
        remove_overlay_elements: bool = False,
        simulate_user: bool = False,
        override_navigator: bool = False,
        magic: bool = False,
        adjust_viewport_to_content: bool = False,
        # Media Handling Parameters
        screenshot: bool = False,
        screenshot_wait_for: float = None,
        screenshot_height_threshold: int = SCREENSHOT_HEIGHT_TRESHOLD,
        pdf: bool = False,
        capture_mhtml: bool = False,
        image_description_min_word_threshold: int = IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD,
        image_score_threshold: int = IMAGE_SCORE_THRESHOLD,
        table_score_threshold: int = 7,
        exclude_external_images: bool = False,
        exclude_all_images: bool = False,
        # Link and Domain Handling Parameters
        exclude_social_media_domains: list = None,
        exclude_external_links: bool = False,
        exclude_social_media_links: bool = False,
        exclude_domains: list = None,
        exclude_internal_links: bool = False,
        score_links: bool = False,
        # Debugging and Logging Parameters
        verbose: bool = True,
        log_console: bool = False,
        # Network and Console Capturing Parameters
        capture_network_requests: bool = False,
        capture_console_messages: bool = False,
        # Connection Parameters
        method: str = "GET",
        stream: bool = False,
        url: str = None,
        check_robots_txt: bool = False,
        user_agent: str = None,
        user_agent_mode: str = None,
        user_agent_generator_config: dict = {},
        # Deep Crawl Parameters
        deep_crawl_strategy: Optional[DeepCrawlStrategy] = None,
        # Link Extraction Parameters
        link_preview_config: Union[LinkPreviewConfig, Dict[str, Any]] = None,
        # Virtual Scroll Parameters
        virtual_scroll_config: Union[VirtualScrollConfig, Dict[str, Any]] = None,
        # URL Matching Parameters
        url_matcher: Optional[UrlMatcher] = None,
        match_mode: MatchMode = MatchMode.OR,
        # Experimental Parameters
        experimental: Dict[str, Any] = None,
    ):
        # TODO: Planning to set properties dynamically based on the __init__ signature
        self.url = url

        # Content Processing Parameters
        self.word_count_threshold = word_count_threshold
        self.extraction_strategy = extraction_strategy
        self.chunking_strategy = chunking_strategy
        self.markdown_generator = markdown_generator
        self.only_text = only_text
        self.css_selector = css_selector
        self.target_elements = target_elements or []
        self.excluded_tags = excluded_tags or []
        self.excluded_selector = excluded_selector or ""
        self.keep_data_attributes = keep_data_attributes
        self.keep_attrs = keep_attrs or []
        self.remove_forms = remove_forms
        self.prettiify = prettiify
        self.parser_type = parser_type
        self.scraping_strategy = scraping_strategy or LXMLWebScrapingStrategy()
        self.proxy_config = proxy_config
        self.proxy_rotation_strategy = proxy_rotation_strategy
        
        # Browser Location and Identity Parameters
        self.locale = locale
        self.timezone_id = timezone_id
        self.geolocation = geolocation

        # SSL Parameters
        self.fetch_ssl_certificate = fetch_ssl_certificate

        # Caching Parameters
        self.cache_mode = cache_mode
        self.session_id = session_id
        self.bypass_cache = bypass_cache
        self.disable_cache = disable_cache
        self.no_cache_read = no_cache_read
        self.no_cache_write = no_cache_write
        self.shared_data = shared_data

        # Page Navigation and Timing Parameters
        self.wait_until = wait_until
        self.page_timeout = page_timeout
        self.wait_for = wait_for
        self.wait_for_timeout = wait_for_timeout
        self.wait_for_images = wait_for_images
        self.delay_before_return_html = delay_before_return_html
        self.mean_delay = mean_delay
        self.max_range = max_range
        self.semaphore_count = semaphore_count

        # Page Interaction Parameters
        self.js_code = js_code
        self.c4a_script = c4a_script
        self.js_only = js_only
        self.ignore_body_visibility = ignore_body_visibility
        self.scan_full_page = scan_full_page
        self.scroll_delay = scroll_delay
        self.max_scroll_steps = max_scroll_steps
        self.process_iframes = process_iframes
        self.remove_overlay_elements = remove_overlay_elements
        self.simulate_user = simulate_user
        self.override_navigator = override_navigator
        self.magic = magic
        self.adjust_viewport_to_content = adjust_viewport_to_content

        # Media Handling Parameters
        self.screenshot = screenshot
        self.screenshot_wait_for = screenshot_wait_for
        self.screenshot_height_threshold = screenshot_height_threshold
        self.pdf = pdf
        self.capture_mhtml = capture_mhtml
        self.image_description_min_word_threshold = image_description_min_word_threshold
        self.image_score_threshold = image_score_threshold
        self.exclude_external_images = exclude_external_images
        self.exclude_all_images = exclude_all_images
        self.table_score_threshold = table_score_threshold

        # Link and Domain Handling Parameters
        self.exclude_social_media_domains = (
            exclude_social_media_domains or SOCIAL_MEDIA_DOMAINS
        )
        self.exclude_external_links = exclude_external_links
        self.exclude_social_media_links = exclude_social_media_links
        self.exclude_domains = exclude_domains or []
        self.exclude_internal_links = exclude_internal_links
        self.score_links = score_links

        # Debugging and Logging Parameters
        self.verbose = verbose
        self.log_console = log_console
        
        # Network and Console Capturing Parameters
        self.capture_network_requests = capture_network_requests
        self.capture_console_messages = capture_console_messages

        # Connection Parameters
        self.stream = stream
        self.method = method

        # Robots.txt Handling Parameters
        self.check_robots_txt = check_robots_txt

        # User Agent Parameters
        self.user_agent = user_agent
        self.user_agent_mode = user_agent_mode
        self.user_agent_generator_config = user_agent_generator_config

        # Validate type of extraction strategy and chunking strategy if they are provided
        if self.extraction_strategy is not None and not isinstance(
            self.extraction_strategy, ExtractionStrategy
        ):
            raise ValueError(
                "extraction_strategy must be an instance of ExtractionStrategy"
            )
        if self.chunking_strategy is not None and not isinstance(
            self.chunking_strategy, ChunkingStrategy
        ):
            raise ValueError(
                "chunking_strategy must be an instance of ChunkingStrategy"
            )

        # Set default chunking strategy if None
        if self.chunking_strategy is None:
            self.chunking_strategy = RegexChunking()

        # Deep Crawl Parameters
        self.deep_crawl_strategy = deep_crawl_strategy
        
        # Link Extraction Parameters
        if link_preview_config is None:
            self.link_preview_config = None
        elif isinstance(link_preview_config, LinkPreviewConfig):
            self.link_preview_config = link_preview_config
        elif isinstance(link_preview_config, dict):
            # Convert dict to config object for backward compatibility
            self.link_preview_config = LinkPreviewConfig.from_dict(link_preview_config)
        else:
            raise ValueError("link_preview_config must be LinkPreviewConfig object or dict")
        
        # Virtual Scroll Parameters
        if virtual_scroll_config is None:
            self.virtual_scroll_config = None
        elif isinstance(virtual_scroll_config, VirtualScrollConfig):
            self.virtual_scroll_config = virtual_scroll_config
        elif isinstance(virtual_scroll_config, dict):
            # Convert dict to config object for backward compatibility
            self.virtual_scroll_config = VirtualScrollConfig.from_dict(virtual_scroll_config)
        else:
            raise ValueError("virtual_scroll_config must be VirtualScrollConfig object or dict")
        
        # URL Matching Parameters
        self.url_matcher = url_matcher
        self.match_mode = match_mode
        
        # Experimental Parameters
        self.experimental = experimental or {}
        
        # Compile C4A scripts if provided
        if self.c4a_script and not self.js_code:
            self._compile_c4a_script()


    def _compile_c4a_script(self):
        """Compile C4A script to JavaScript"""
        try:
            # Try importing the compiler
            try:
                from .script import compile
            except ImportError:
                from crawl4ai.script import compile
                
            # Handle both string and list inputs
            if isinstance(self.c4a_script, str):
                scripts = [self.c4a_script]
            else:
                scripts = self.c4a_script
                
            # Compile each script
            compiled_js = []
            for i, script in enumerate(scripts):
                result = compile(script)
                
                if result.success:
                    compiled_js.extend(result.js_code)
                else:
                    # Format error message following existing patterns
                    error = result.first_error
                    error_msg = (
                        f"C4A Script compilation error (script {i+1}):\n"
                        f"  Line {error.line}, Column {error.column}: {error.message}\n"
                        f"  Code: {error.source_line}"
                    )
                    if error.suggestions:
                        error_msg += f"\n  Suggestion: {error.suggestions[0].message}"
                        
                    raise ValueError(error_msg)
                    
            self.js_code = compiled_js
            
        except ImportError:
            raise ValueError(
                "C4A script compiler not available. "
                "Please ensure crawl4ai.script module is properly installed."
            )
        except Exception as e:
            # Re-raise with context
            if "compilation error" not in str(e).lower():
                raise ValueError(f"Failed to compile C4A script: {str(e)}")
            raise
    
    def is_match(self, url: str) -> bool:
        """Check if this config matches the given URL.
        
        Args:
            url: The URL to check against this config's matcher
            
        Returns:
            bool: True if this config should be used for the URL or if no matcher is set.
        """
        if self.url_matcher is None:
            return True
            
        if callable(self.url_matcher):
            # Single function matcher
            return self.url_matcher(url)
        
        elif isinstance(self.url_matcher, str):
            # Single pattern string
            from fnmatch import fnmatch
            return fnmatch(url, self.url_matcher)
        
        elif isinstance(self.url_matcher, list):
            # List of mixed matchers
            if not self.url_matcher:  # Empty list
                return False
                
            results = []
            for matcher in self.url_matcher:
                if callable(matcher):
                    results.append(matcher(url))
                elif isinstance(matcher, str):
                    from fnmatch import fnmatch
                    results.append(fnmatch(url, matcher))
                else:
                    # Skip invalid matchers
                    continue
            
            # Apply match mode logic
            if self.match_mode == MatchMode.OR:
                return any(results) if results else False
            else:  # AND mode
                return all(results) if results else False
        
        return False


    def __getattr__(self, name):
        """Handle attribute access."""
        if name in self._UNWANTED_PROPS:
            raise AttributeError(f"Getting '{name}' is deprecated. {self._UNWANTED_PROPS[name]}")
        raise AttributeError(f"'{self.__class__.__name__}' has no attribute '{name}'")

    def __setattr__(self, name, value):
        """Handle attribute setting."""
        # TODO: Planning to set properties dynamically based on the __init__ signature
        sig = inspect.signature(self.__init__)
        all_params = sig.parameters  # Dictionary of parameter names and their details

        if name in self._UNWANTED_PROPS and value is not all_params[name].default:
            raise AttributeError(f"Setting '{name}' is deprecated. {self._UNWANTED_PROPS[name]}")
        
        super().__setattr__(name, value)

    @staticmethod
    def from_kwargs(kwargs: dict) -> "CrawlerRunConfig":
        return CrawlerRunConfig(
            # Content Processing Parameters
            word_count_threshold=kwargs.get("word_count_threshold", 200),
            extraction_strategy=kwargs.get("extraction_strategy"),
            chunking_strategy=kwargs.get("chunking_strategy", RegexChunking()),
            markdown_generator=kwargs.get("markdown_generator"),
            only_text=kwargs.get("only_text", False),
            css_selector=kwargs.get("css_selector"),
            target_elements=kwargs.get("target_elements", []),
            excluded_tags=kwargs.get("excluded_tags", []),
            excluded_selector=kwargs.get("excluded_selector", ""),
            keep_data_attributes=kwargs.get("keep_data_attributes", False),
            keep_attrs=kwargs.get("keep_attrs", []),
            remove_forms=kwargs.get("remove_forms", False),
            prettiify=kwargs.get("prettiify", False),
            parser_type=kwargs.get("parser_type", "lxml"),
            scraping_strategy=kwargs.get("scraping_strategy"),
            proxy_config=kwargs.get("proxy_config"),
            proxy_rotation_strategy=kwargs.get("proxy_rotation_strategy"),
            # Browser Location and Identity Parameters
            locale=kwargs.get("locale", None),
            timezone_id=kwargs.get("timezone_id", None),
            geolocation=kwargs.get("geolocation", None),
            # SSL Parameters
            fetch_ssl_certificate=kwargs.get("fetch_ssl_certificate", False),
            # Caching Parameters
            cache_mode=kwargs.get("cache_mode", CacheMode.BYPASS),
            session_id=kwargs.get("session_id"),
            bypass_cache=kwargs.get("bypass_cache", False),
            disable_cache=kwargs.get("disable_cache", False),
            no_cache_read=kwargs.get("no_cache_read", False),
            no_cache_write=kwargs.get("no_cache_write", False),
            shared_data=kwargs.get("shared_data", None),
            # Page Navigation and Timing Parameters
            wait_until=kwargs.get("wait_until", "domcontentloaded"),
            page_timeout=kwargs.get("page_timeout", 60000),
            wait_for=kwargs.get("wait_for"),
            wait_for_timeout=kwargs.get("wait_for_timeout"),
            wait_for_images=kwargs.get("wait_for_images", False),
            delay_before_return_html=kwargs.get("delay_before_return_html", 0.1),
            mean_delay=kwargs.get("mean_delay", 0.1),
            max_range=kwargs.get("max_range", 0.3),
            semaphore_count=kwargs.get("semaphore_count", 5),
            # Page Interaction Parameters
            js_code=kwargs.get("js_code"),
            js_only=kwargs.get("js_only", False),
            ignore_body_visibility=kwargs.get("ignore_body_visibility", True),
            scan_full_page=kwargs.get("scan_full_page", False),
            scroll_delay=kwargs.get("scroll_delay", 0.2),
            max_scroll_steps=kwargs.get("max_scroll_steps"),
            process_iframes=kwargs.get("process_iframes", False),
            remove_overlay_elements=kwargs.get("remove_overlay_elements", False),
            simulate_user=kwargs.get("simulate_user", False),
            override_navigator=kwargs.get("override_navigator", False),
            magic=kwargs.get("magic", False),
            adjust_viewport_to_content=kwargs.get("adjust_viewport_to_content", False),
            # Media Handling Parameters
            screenshot=kwargs.get("screenshot", False),
            screenshot_wait_for=kwargs.get("screenshot_wait_for"),
            screenshot_height_threshold=kwargs.get(
                "screenshot_height_threshold", SCREENSHOT_HEIGHT_TRESHOLD
            ),
            pdf=kwargs.get("pdf", False),
            capture_mhtml=kwargs.get("capture_mhtml", False),
            image_description_min_word_threshold=kwargs.get(
                "image_description_min_word_threshold",
                IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD,
            ),
            image_score_threshold=kwargs.get(
                "image_score_threshold", IMAGE_SCORE_THRESHOLD
            ),
            table_score_threshold=kwargs.get("table_score_threshold", 7),
            exclude_all_images=kwargs.get("exclude_all_images", False),
            exclude_external_images=kwargs.get("exclude_external_images", False),
            # Link and Domain Handling Parameters
            exclude_social_media_domains=kwargs.get(
                "exclude_social_media_domains", SOCIAL_MEDIA_DOMAINS
            ),
            exclude_external_links=kwargs.get("exclude_external_links", False),
            exclude_social_media_links=kwargs.get("exclude_social_media_links", False),
            exclude_domains=kwargs.get("exclude_domains", []),
            exclude_internal_links=kwargs.get("exclude_internal_links", False),
            score_links=kwargs.get("score_links", False),
            # Debugging and Logging Parameters
            verbose=kwargs.get("verbose", True),
            log_console=kwargs.get("log_console", False),
            # Network and Console Capturing Parameters
            capture_network_requests=kwargs.get("capture_network_requests", False),
            capture_console_messages=kwargs.get("capture_console_messages", False),
            # Connection Parameters
            method=kwargs.get("method", "GET"),
            stream=kwargs.get("stream", False),
            check_robots_txt=kwargs.get("check_robots_txt", False),
            user_agent=kwargs.get("user_agent"),
            user_agent_mode=kwargs.get("user_agent_mode"),
            user_agent_generator_config=kwargs.get("user_agent_generator_config", {}),
            # Deep Crawl Parameters
            deep_crawl_strategy=kwargs.get("deep_crawl_strategy"),
            # Link Extraction Parameters
            link_preview_config=kwargs.get("link_preview_config"),
            url=kwargs.get("url"),
            # URL Matching Parameters
            url_matcher=kwargs.get("url_matcher"),
            match_mode=kwargs.get("match_mode", MatchMode.OR),
            # Experimental Parameters 
            experimental=kwargs.get("experimental"),
        )

    # Create a funciton returns dict of the object
    def dump(self) -> dict:
        # Serialize the object to a dictionary
        return to_serializable_dict(self)

    @staticmethod
    def load(data: dict) -> "CrawlerRunConfig":
        # Deserialize the object from a dictionary
        config = from_serializable_dict(data)
        if isinstance(config, CrawlerRunConfig):
            return config
        return CrawlerRunConfig.from_kwargs(config)

    def to_dict(self):
        return {
            "word_count_threshold": self.word_count_threshold,
            "extraction_strategy": self.extraction_strategy,
            "chunking_strategy": self.chunking_strategy,
            "markdown_generator": self.markdown_generator,
            "only_text": self.only_text,
            "css_selector": self.css_selector,
            "target_elements": self.target_elements,
            "excluded_tags": self.excluded_tags,
            "excluded_selector": self.excluded_selector,
            "keep_data_attributes": self.keep_data_attributes,
            "keep_attrs": self.keep_attrs,
            "remove_forms": self.remove_forms,
            "prettiify": self.prettiify,
            "parser_type": self.parser_type,
            "scraping_strategy": self.scraping_strategy,
            "proxy_config": self.proxy_config,
            "proxy_rotation_strategy": self.proxy_rotation_strategy,
            "locale": self.locale,
            "timezone_id": self.timezone_id,
            "geolocation": self.geolocation,
            "fetch_ssl_certificate": self.fetch_ssl_certificate,
            "cache_mode": self.cache_mode,
            "session_id": self.session_id,
            "bypass_cache": self.bypass_cache,
            "disable_cache": self.disable_cache,
            "no_cache_read": self.no_cache_read,
            "no_cache_write": self.no_cache_write,
            "shared_data": self.shared_data,
            "wait_until": self.wait_until,
            "page_timeout": self.page_timeout,
            "wait_for": self.wait_for,
            "wait_for_timeout": self.wait_for_timeout,
            "wait_for_images": self.wait_for_images,
            "delay_before_return_html": self.delay_before_return_html,
            "mean_delay": self.mean_delay,
            "max_range": self.max_range,
            "semaphore_count": self.semaphore_count,
            "js_code": self.js_code,
            "js_only": self.js_only,
            "ignore_body_visibility": self.ignore_body_visibility,
            "scan_full_page": self.scan_full_page,
            "scroll_delay": self.scroll_delay,
            "max_scroll_steps": self.max_scroll_steps,
            "process_iframes": self.process_iframes,
            "remove_overlay_elements": self.remove_overlay_elements,
            "simulate_user": self.simulate_user,
            "override_navigator": self.override_navigator,
            "magic": self.magic,
            "adjust_viewport_to_content": self.adjust_viewport_to_content,
            "screenshot": self.screenshot,
            "screenshot_wait_for": self.screenshot_wait_for,
            "screenshot_height_threshold": self.screenshot_height_threshold,
            "pdf": self.pdf,
            "capture_mhtml": self.capture_mhtml,
            "image_description_min_word_threshold": self.image_description_min_word_threshold,
            "image_score_threshold": self.image_score_threshold,
            "table_score_threshold": self.table_score_threshold,
            "exclude_all_images": self.exclude_all_images,
            "exclude_external_images": self.exclude_external_images,
            "exclude_social_media_domains": self.exclude_social_media_domains,
            "exclude_external_links": self.exclude_external_links,
            "exclude_social_media_links": self.exclude_social_media_links,
            "exclude_domains": self.exclude_domains,
            "exclude_internal_links": self.exclude_internal_links,
            "score_links": self.score_links,
            "verbose": self.verbose,
            "log_console": self.log_console,
            "capture_network_requests": self.capture_network_requests,
            "capture_console_messages": self.capture_console_messages,
            "method": self.method,
            "stream": self.stream,
            "check_robots_txt": self.check_robots_txt,
            "user_agent": self.user_agent,
            "user_agent_mode": self.user_agent_mode,
            "user_agent_generator_config": self.user_agent_generator_config,
            "deep_crawl_strategy": self.deep_crawl_strategy,
            "link_preview_config": self.link_preview_config.to_dict() if self.link_preview_config else None,
            "url": self.url,
            "url_matcher": self.url_matcher,
            "match_mode": self.match_mode,
            "experimental": self.experimental,
        }

    def clone(self, **kwargs):
        """Create a copy of this configuration with updated values.

        Args:
            **kwargs: Key-value pairs of configuration options to update

        Returns:
            CrawlerRunConfig: A new instance with the specified updates

        Example:
            ```python
            # Create a new config with streaming enabled
            stream_config = config.clone(stream=True)

            # Create a new config with multiple updates
            new_config = config.clone(
                stream=True,
                cache_mode=CacheMode.BYPASS,
                verbose=True
            )
            ```
        """
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return CrawlerRunConfig.from_kwargs(config_dict)

class LLMConfig:
    def __init__(
        self,
        provider: str = DEFAULT_PROVIDER,
        api_token: Optional[str] = None,
        base_url: Optional[str] = None,
        temperature: Optional[float] = None,
        max_tokens: Optional[int] = None,
        top_p: Optional[float] = None,
        frequency_penalty: Optional[float] = None,
        presence_penalty: Optional[float] = None,
        stop: Optional[List[str]] = None,
        n: Optional[int] = None,    
    ):
        """Configuaration class for LLM provider and API token."""
        self.provider = provider
        if api_token and not api_token.startswith("env:"):
            self.api_token = api_token
        elif api_token and api_token.startswith("env:"):
            self.api_token = os.getenv(api_token[4:])
        else:
            # Check if given provider starts with any of key in PROVIDER_MODELS_PREFIXES
            # If not, check if it is in PROVIDER_MODELS
            prefixes = PROVIDER_MODELS_PREFIXES.keys()
            if any(provider.startswith(prefix) for prefix in prefixes):
                selected_prefix = next(
                    (prefix for prefix in prefixes if provider.startswith(prefix)),
                    None,
                )
                self.api_token = PROVIDER_MODELS_PREFIXES.get(selected_prefix)                    
            else:
                self.provider = DEFAULT_PROVIDER
                self.api_token = os.getenv(DEFAULT_PROVIDER_API_KEY)
        self.base_url = base_url
        self.temperature = temperature
        self.max_tokens = max_tokens
        self.top_p = top_p
        self.frequency_penalty = frequency_penalty
        self.presence_penalty = presence_penalty
        self.stop = stop
        self.n = n

    @staticmethod
    def from_kwargs(kwargs: dict) -> "LLMConfig":
        return LLMConfig(
            provider=kwargs.get("provider", DEFAULT_PROVIDER),
            api_token=kwargs.get("api_token"),
            base_url=kwargs.get("base_url"),
            temperature=kwargs.get("temperature"),
            max_tokens=kwargs.get("max_tokens"),
            top_p=kwargs.get("top_p"),
            frequency_penalty=kwargs.get("frequency_penalty"),
            presence_penalty=kwargs.get("presence_penalty"),
            stop=kwargs.get("stop"),
            n=kwargs.get("n")
        )

    def to_dict(self):
        return {
            "provider": self.provider,
            "api_token": self.api_token,
            "base_url": self.base_url,
            "temperature": self.temperature,
            "max_tokens": self.max_tokens,
            "top_p": self.top_p,
            "frequency_penalty": self.frequency_penalty,
            "presence_penalty": self.presence_penalty,
            "stop": self.stop,
            "n": self.n
        }

    def clone(self, **kwargs):
        """Create a copy of this configuration with updated values.

        Args:
            **kwargs: Key-value pairs of configuration options to update

        Returns:
            llm_config: A new instance with the specified updates
        """
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return LLMConfig.from_kwargs(config_dict)

class SeedingConfig:
    """
    Configuration class for URL discovery and pre-validation via AsyncUrlSeeder.
    """
    def __init__(
        self,
        source: str = "sitemap+cc",
        pattern: Optional[str] = "*",
        live_check: bool = False,
        extract_head: bool = False,
        max_urls: int = -1,
        concurrency: int = 1000,
        hits_per_sec: int = 5,
        force: bool = False,
        base_directory: Optional[str] = None,
        llm_config: Optional[LLMConfig] = None,
        verbose: Optional[bool] = None,
        query: Optional[str] = None,
        score_threshold: Optional[float] = None,
        scoring_method: str = "bm25",
        filter_nonsense_urls: bool = True,
    ):
        """
        Initialize URL seeding configuration.
        
        Args:
            source: Discovery source(s) to use. Options: "sitemap", "cc" (Common Crawl), 
                   or "sitemap+cc" (both). Default: "sitemap+cc"
            pattern: URL pattern to filter discovered URLs (e.g., "*example.com/blog/*"). 
                    Supports glob-style wildcards. Default: "*" (all URLs)
            live_check: Whether to perform HEAD requests to verify URL liveness. 
                       Default: False
            extract_head: Whether to fetch and parse <head> section for metadata extraction.
                         Required for BM25 relevance scoring. Default: False
            max_urls: Maximum number of URLs to discover. Use -1 for no limit. 
                     Default: -1
            concurrency: Maximum concurrent requests for live checks/head extraction. 
                        Default: 1000
            hits_per_sec: Rate limit in requests per second to avoid overwhelming servers. 
                         Default: 5
            force: If True, bypasses the AsyncUrlSeeder's internal .jsonl cache and 
                  re-fetches URLs. Default: False
            base_directory: Base directory for UrlSeeder's cache files (.jsonl). 
                           If None, uses default ~/.crawl4ai/. Default: None
            llm_config: LLM configuration for future features (e.g., semantic scoring). 
                       Currently unused. Default: None
            verbose: Override crawler's general verbose setting for seeding operations. 
                    Default: None (inherits from crawler)
            query: Search query for BM25 relevance scoring (e.g., "python tutorials"). 
                  Requires extract_head=True. Default: None
            score_threshold: Minimum relevance score (0.0-1.0) to include URL. 
                           Only applies when query is provided. Default: None
            scoring_method: Scoring algorithm to use. Currently only "bm25" is supported. 
                          Future: "semantic". Default: "bm25"
            filter_nonsense_urls: Filter out utility URLs like robots.txt, sitemap.xml, 
                                 ads.txt, favicon.ico, etc. Default: True
        """
        self.source = source
        self.pattern = pattern
        self.live_check = live_check
        self.extract_head = extract_head
        self.max_urls = max_urls
        self.concurrency = concurrency
        self.hits_per_sec = hits_per_sec
        self.force = force
        self.base_directory = base_directory
        self.llm_config = llm_config
        self.verbose = verbose
        self.query = query
        self.score_threshold = score_threshold
        self.scoring_method = scoring_method
        self.filter_nonsense_urls = filter_nonsense_urls

    # Add to_dict, from_kwargs, and clone methods for consistency
    def to_dict(self) -> Dict[str, Any]:
        return {k: v for k, v in self.__dict__.items() if k != 'llm_config' or v is not None}

    @staticmethod
    def from_kwargs(kwargs: Dict[str, Any]) -> 'SeedingConfig':
        return SeedingConfig(**kwargs)

    def clone(self, **kwargs: Any) -> 'SeedingConfig':
        config_dict = self.to_dict()
        config_dict.update(kwargs)
        return SeedingConfig.from_kwargs(config_dict)
