import time
from src.utils.logger import Logger

class BlockchainNode:
    def __init__(self):
        self.chain = []
        self.mempool = []
        self.current_version = 1
        self.logger = Logger()
        self.last_block_hash = None
        self.current_target = None

    def connect(self):
        """Initialize blockchain connection and sync"""
        self.logger.info("Connecting to blockchain network...")
        self._sync_blockchain()

    def _sync_blockchain(self):
        """Synchronize with the blockchain"""
        self.logger.info("Synchronizing blockchain data...")
        # Implementation for blockchain sync

    def get_mining_template(self):
        """Prepare block template for mining"""
        return {
            'version': self.current_version,
            'previous_block': self.last_block_hash,
            'merkle_root': self.calculate_merkle_root(),
            'timestamp': self.get_timestamp(),
            'target': self.get_current_target()
        }

    def calculate_merkle_root(self):
        """Calculate merkle root from mempool transactions"""
        # Implementation for merkle root calculation
        pass

    def get_timestamp(self):
        """Get current timestamp"""
        return int(time.time())

    def get_current_target(self):
        """Get current mining target difficulty"""
        return self.current_target

    def validate_block(self, block):
        """Validate a mined block"""
        # Implementation for block validation
        pass
