"""
Real Bitcoin network integration methods for wallet
"""
from typing import Dict, Any, Optional
from decimal import Decimal
import time
from bitcoinlib.services.services import Service
from bitcoinlib.transactions import Transaction

class NetworkOperations:
    def _update_network_balance(self):
        """Update wallet with real network balance"""
        try:
            # Get real balance from network
            balance_sats = self.service.getbalance(self.keys.address)
            balance_btc = Decimal(str(balance_sats)) / Decimal('100000000')
            
            # Update wallet data with real balance
            self.wallet_data['network_balance'] = float(balance_btc)
            self.wallet_data['last_network_update'] = time.time()
            
            # Get unspent transactions (UTXO)
            self.wallet_data['utxos'] = self.service.getutxos(self.keys.address)
            
            self._save_wallet()
            
        except Exception as e:
            print(f"Error updating network balance: {str(e)}")
            
    def send_bitcoin(self, to_address: str, amount: Decimal, fee_rate: Optional[int] = None) -> Optional[str]:
        """
        Send real Bitcoin transaction
        Args:
            to_address: Destination Bitcoin address
            amount: Amount in BTC
            fee_rate: Optional fee rate in satoshis/byte
        Returns:
            Transaction ID if successful
        """
        try:
            # Create real transaction
            tx = Transaction(network='bitcoin')
            
            # Convert amount to satoshis
            amount_sats = int(amount * 100000000)
            
            # Get UTXOs for spending
            utxos = self.service.getutxos(self.keys.address)
            
            # Add inputs
            total_input = 0
            for utxo in utxos:
                if total_input >= amount_sats:
                    break
                tx.add_input(
                    utxo['txid'],
                    utxo['output_n'],
                    keys=self.keys.private_key
                )
                total_input += utxo['value']
            
            if total_input < amount_sats:
                raise ValueError("Insufficient funds")
                
            # Add recipient output
            tx.add_output(to_address, amount_sats)
            
            # Add change output if needed
            change = total_input - amount_sats
            if change > 0:
                tx.add_output(self.keys.address, change)
                
            # Sign transaction
            tx.sign(self.keys.private_key)
            
            # Broadcast to network
            txid = self.service.sendrawtransaction(tx.raw_hex())
            
            # Record transaction
            self._record_transaction(txid, to_address, amount, 'sent')
            
            return txid
            
        except Exception as e:
            raise ValueError(f"Error creating transaction: {str(e)}")
            
    def get_transaction_history(self) -> list:
        """Get real transaction history from network"""
        try:
            transactions = self.service.gettransactions(self.keys.address)
            
            history = []
            for tx in transactions:
                # Parse transaction details
                tx_info = {
                    'txid': tx['txid'],
                    'confirmations': tx['confirmations'],
                    'time': tx['time'],
                    'amount': Decimal(str(tx['amount'])) / Decimal('100000000'),
                    'fee': tx.get('fee', 0),
                    'category': tx['category']  # 'send', 'receive', or 'generate' for mining
                }
                
                history.append(tx_info)
                
            return history
            
        except Exception as e:
            print(f"Error getting transaction history: {str(e)}")
            return []
            
    def _record_transaction(self, txid: str, address: str, amount: Decimal, type_: str):
        """Record transaction in wallet"""
        tx_data = {
            'txid': txid,
            'address': address,
            'amount': float(amount),
            'type': type_,
            'timestamp': time.time()
        }
        
        self.wallet_data['transactions'].append(tx_data)
        self._save_wallet()
        
    def process_mining_reward(self, block_hash: str, amount: Decimal):
        """Process real mining reward"""
        try:
            # Get block details
            block = self.service.getblock(block_hash)
            
            # Record mining reward
            reward_data = {
                'block_hash': block_hash,
                'height': block['height'],
                'amount': float(amount),
                'confirmations': block['confirmations'],
                'timestamp': block['time']
            }
            
            self.wallet_data['mining_rewards'].append(reward_data)
            self._save_wallet()
            
            # Update network balance
            self._update_network_balance()
            
        except Exception as e:
            print(f"Error processing mining reward: {str(e)}")
