import { useCallback, useState } from 'react';
import type { CallState, ConnectionState, WebRTCHookReturn } from '../types';

/**
 * Main WebRTC hook for managing peer connections
 * 
 * @example
 * ```tsx
 * const { connect, localStream, remoteStream, connectionState } = useWebRTC();
 * ```
 */
export function useWebRTC(): WebRTCHookReturn {
    const [localStream, setLocalStream] = useState<MediaStream | null>(null);
    const [remoteStream, setRemoteStream] = useState<MediaStream | null>(null);
    const [connectionState, setConnectionState] = useState<ConnectionState>('disconnected');
    const [callState, setCallState] = useState<CallState>('idle');

    const connect = useCallback(async (roomId: string): Promise<void> => {
        try {
            setConnectionState('connecting');
            setCallState('calling');

            // TODO: Implement WebRTC connection logic
            console.log('Connecting to room:', roomId);

            // Placeholder implementation
            setTimeout(() => {
                setConnectionState('connected');
                setCallState('connected');
            }, 1000);

        } catch (error) {
            console.error('Failed to connect:', error);
            setConnectionState('failed');
            setCallState('ended');
        }
    }, []);

    const disconnect = useCallback(() => {
        setConnectionState('disconnected');
        setCallState('idle');
        setLocalStream(null);
        setRemoteStream(null);

        // TODO: Cleanup WebRTC connections
        console.log('Disconnected');
    }, []);

    return {
        connect,
        disconnect,
        localStream,
        remoteStream,
        connectionState,
        callState
    };
}