from dataclasses import dataclass
from typing import Optional, Dict, Any, TypeVar, Generic
from synclean.models.enums import RoomOrderBy, Direction, UserMediaOrderBy, UserOrderBy

OrderByType = TypeVar("OrderByType")


@dataclass
class PaginationParams(Generic[OrderByType]):
    """Parameters for pagination."""
    limit: int = 100
    offset: int = 0
    order_by: OrderByType = None
    direction: Direction = Direction.FORWARD
    search_term: Optional[str] = None

    def to_query_params(self) -> Dict[str, Any]:
        """Convert to query parameters for API request."""
        params = {
            'limit': self.limit,
            'from': self.offset,
            'order_by': self.order_by.value,
            'dir': self.direction.value
        }

        if self.search_term:
            params['search_term'] = self.search_term

        return params


@dataclass
class RoomPaginationParams(PaginationParams[RoomOrderBy]):
    """Pagination parameters for rooms."""
    order_by = RoomOrderBy = RoomOrderBy.NAME


@dataclass
class UserPaginationParams(PaginationParams[UserOrderBy]):
    """Pagination parameters for users."""
    order_by = UserOrderBy = UserOrderBy.NAME


@dataclass
class UserMediaPaginationParams(PaginationParams[UserMediaOrderBy]):
    """Pagination parameters for users based on media."""
    order_by = UserOrderBy = UserMediaOrderBy.MEDIA_LENGTH