from typing import Optional
import asyncio
import logging
from ..network.peer_manager import PeerManager
from .state_manager import ConsensusState

class RaftConsensus:
    def __init__(self, node_id: str, peers: PeerManager):
        self.node_id = node_id
        self.peers = peers
        self.current_term = 0
        self.voted_for: Optional[str] = None
        self.is_leader = False
        self.logger = logging.getLogger(__name__)

    async def propose_update(self, state: ConsensusState) -> bool:
        if not self.is_leader:
            self.logger.warning("Not the leader - cannot propose update")
            return False
            
        votes_needed = len(self.peers.get_active_peers()) // 2 + 1
        votes_received = 1  # Count self
        
        for peer in self.peers.get_active_peers():
            try:
                vote = await self._request_vote(peer, state)
                if vote:
                    votes_received += 1
                if votes_received >= votes_needed:
                    await self._commit_update(state)
                    return True
            except ConnectionError as e:
                self.logger.error(f"Failed to get vote from peer {peer}: {e}")
                
        return False

    async def _request_vote(self, peer: str, state: ConsensusState) -> bool:
        # Implementation of vote request
        pass

    async def _commit_update(self, state: ConsensusState) -> None:
        # Implementation of state commit
        pass

    async def get_network_state(self) -> Optional[ConsensusState]:
        # TODO: Implement state retrieval from leader
        return None
