"""
Realtime Capabilities Module

Provides realtime audio/video streaming functionality.
"""

from dataclasses import dataclass, field
from typing import Optional, Any, Dict, List, Callable


@dataclass
class RealtimeSession:
    """Realtime session information."""
    id: str
    status: str = "created"
    model: Optional[str] = None
    url: Optional[str] = None
    metadata: Dict[str, Any] = field(default_factory=dict)


@dataclass
class RealtimeEvent:
    """Realtime event."""
    type: str
    data: Optional[Any] = None
    session_id: Optional[str] = None
    metadata: Dict[str, Any] = field(default_factory=dict)


def realtime_connect(
    model: str = "gpt-4o-realtime-preview",
    modalities: Optional[List[str]] = None,
    instructions: Optional[str] = None,
    voice: str = "alloy",
    api_key: Optional[str] = None,
    api_base: Optional[str] = None,
    metadata: Optional[Dict[str, Any]] = None,
    **kwargs
) -> RealtimeSession:
    """
    Create a realtime session.
    
    Args:
        model: Model to use
        modalities: List of modalities (e.g., ["text", "audio"])
        instructions: System instructions
        voice: Voice for audio output
        api_key: Optional API key override
        api_base: Optional API base URL override
        metadata: Optional metadata for tracing
        
    Returns:
        RealtimeSession with connection info
        
    Example:
        >>> session = realtime_connect()
        >>> print(session.id)
    """
    import uuid
    import os
    
    session_id = f"realtime-{uuid.uuid4().hex[:12]}"
    
    # Build WebSocket URL
    base = api_base or os.environ.get("OPENAI_API_BASE", "wss://api.openai.com")
    if base.startswith("http"):
        base = base.replace("https://", "wss://").replace("http://", "ws://")
    
    url = f"{base.rstrip('/')}/v1/realtime?model={model}"
    
    return RealtimeSession(
        id=session_id,
        status="created",
        model=model,
        url=url,
        metadata={
            "modalities": modalities or ["text", "audio"],
            "instructions": instructions,
            "voice": voice,
            **(metadata or {}),
        },
    )


async def arealtime_connect(
    model: str = "gpt-4o-realtime-preview",
    modalities: Optional[List[str]] = None,
    instructions: Optional[str] = None,
    voice: str = "alloy",
    api_key: Optional[str] = None,
    api_base: Optional[str] = None,
    metadata: Optional[Dict[str, Any]] = None,
    **kwargs
) -> RealtimeSession:
    """
    Async: Create a realtime session.
    
    See realtime_connect() for full documentation.
    """
    return realtime_connect(
        model=model,
        modalities=modalities,
        instructions=instructions,
        voice=voice,
        api_key=api_key,
        api_base=api_base,
        metadata=metadata,
        **kwargs
    )


def realtime_send(
    session_id: str,
    event_type: str,
    data: Optional[Any] = None,
    metadata: Optional[Dict[str, Any]] = None,
    **kwargs
) -> RealtimeEvent:
    """
    Send an event to a realtime session.
    
    Args:
        session_id: Session ID
        event_type: Event type (e.g., "input_audio_buffer.append")
        data: Event data
        metadata: Optional metadata for tracing
        
    Returns:
        RealtimeEvent with send confirmation
        
    Note:
        This is a placeholder. Actual implementation requires WebSocket connection.
    """
    return RealtimeEvent(
        type=event_type,
        data=data,
        session_id=session_id,
        metadata=metadata or {},
    )


async def arealtime_send(
    session_id: str,
    event_type: str,
    data: Optional[Any] = None,
    metadata: Optional[Dict[str, Any]] = None,
    **kwargs
) -> RealtimeEvent:
    """
    Async: Send an event to a realtime session.
    
    See realtime_send() for full documentation.
    """
    return realtime_send(
        session_id=session_id,
        event_type=event_type,
        data=data,
        metadata=metadata,
        **kwargs
    )
