"""OFP Dialog Event Objects"""

from typing import Any, Dict, Optional
from ..utils.helpers import get_timestamp


def create_dialog_event(
    event_type: str,
    event_data: Dict[str, Any],
    metadata: Optional[Dict[str, Any]] = None
) -> Dict[str, Any]:
    """
    Create a DialogEventObject
    Based on: https://openfloor.dev/protocol/specifications/dialog-event-object.md
    
    Args:
        event_type: Type of event (e.g., "GRANT_FLOOR", "GET_MANIFEST")
        event_ Event-specific data
        meta Optional metadata
    
    Returns:
        DialogEventObject dictionary
    """
    event = {
        "event_type": event_type,
        "timestamp": get_timestamp(),
        "event_data": event_data
    }
    
    if metadata:
        event["metadata"] = metadata
    
    return event


def create_get_manifest_event(
    agent_id: str,
    requested_by: str = "floor_manager"
) -> Dict[str, Any]:
    """
    Create GET_MANIFEST event
    
    Args:
        agent_id: ID of agent to get manifest from
        requested_by: Who is requesting the manifest
    
    Returns:
        DialogEventObject for GET_MANIFEST
    """
    return create_dialog_event(
        event_type="GET_MANIFEST",
        event_data={
            "agent_id": agent_id,
            "requested_by": requested_by
        }
    )


def create_grant_floor_event(
    agent_id: str,
    granted_by: str = "convener",
    duration: Optional[int] = None
) -> Dict[str, Any]:
    """
    Create GRANT_FLOOR event
    
    Args:
        agent_id: ID of agent receiving floor
        granted_by: Who granted the floor
        duration: Optional floor duration in seconds
    
    Returns:
        DialogEventObject for GRANT_FLOOR
    """
    event_data = {
        "agent_id": agent_id,
        "granted_by": granted_by
    }
    
    if duration:
        event_data["duration"] = duration
    
    return create_dialog_event(
        event_type="GRANT_FLOOR",
        event_data=event_data
    )


def create_revoke_floor_event(
    agent_id: str,
    revoked_by: str = "convener",
    reason: str = "floor_expired"
) -> Dict[str, Any]:
    """
    Create REVOKE_FLOOR event
    
    Args:
        agent_id: ID of agent losing floor
        revoked_by: Who revoked the floor
        reason: Reason for revocation
    
    Returns:
        DialogEventObject for REVOKE_FLOOR
    """
    return create_dialog_event(
        event_type="REVOKE_FLOOR",
        event_data={
            "agent_id": agent_id,
            "revoked_by": revoked_by,
            "reason": reason
        }
    )


def create_invite_event(
    session_id: str,
    inviter: str = "floor_manager",
    join_url: Optional[str] = None
) -> Dict[str, Any]:
    """
    Create INVITE event
    
    Args:
        session_id: Session to join
        inviter: Who is sending the invite
        join_url: Optional URL to join session
    
    Returns:
        DialogEventObject for INVITE
    """
    event_data = {
        "session_id": session_id,
        "inviter": inviter
    }
    
    if join_url:
        event_data["join_url"] = join_url
    
    return create_dialog_event(
        event_type="INVITE",
        event_data=event_data
    )


def create_floor_request_event(
    agent_id: str,
    priority: int = 0
) -> Dict[str, Any]:
    """
    Create FLOOR_REQUEST event
    
    Args:
        agent_id: ID of agent requesting floor
        priority: Request priority (higher = more urgent)
    
    Returns:
        DialogEventObject for FLOOR_REQUEST
    """
    return create_dialog_event(
        event_type="FLOOR_REQUEST",
        event_data={
            "agent_id": agent_id,
            "priority": priority
        }
    )


def create_agent_joined_event(
    agent_id: str,
    agent_name: Optional[str] = None
) -> Dict[str, Any]:
    """
    Create AGENT_JOINED event
    
    Args:
        agent_id: ID of agent that joined
        agent_name: Optional agent name
    
    Returns:
        DialogEventObject for AGENT_JOINED
    """
    event_data = {"agent_id": agent_id}
    if agent_name:
        event_data["agent_name"] = agent_name
    
    return create_dialog_event(
        event_type="AGENT_JOINED",
        event_data=event_data
    )


def create_agent_left_event(
    agent_id: str,
    reason: str = "disconnected"
) -> Dict[str, Any]:
    """
    Create AGENT_LEFT event
    
    Args:
        agent_id: ID of agent that left
        reason: Reason for leaving
    
    Returns:
        DialogEventObject for AGENT_LEFT
    """
    return create_dialog_event(
        event_type="AGENT_LEFT",
        event_data={
            "agent_id": agent_id,
            "reason": reason
        }
    )