"""
Enhanced Bitcoin Miner using Virtual GPU Infrastructure
"""
from typing import Dict, Any, Optional
import time
import logging
from ..hardware.enhanced_gpu_manager import EnhancedGPUManager
from bitcoinlib.services.services import Service

class EnhancedBitcoinMiner:
    def __init__(self, wallet_address: str, network='bitcoin'):
        self.logger = logging.getLogger(__name__)
        self.wallet_address = wallet_address
        self.network = network
        
        # Initialize enhanced GPU system
        # Initialize with 1 billion GPUs
        self.gpu_manager = EnhancedGPUManager(num_gpus=1_000_000_000)
        
        # Scale factors for massive GPU array
        self.parallel_blocks = 1_000_000  # Process 1M blocks in parallel
        
        # Bitcoin network service
        self.service = Service(network=self.network)
        
        # Mining state
        self.mining = False
        self.blocks_found = 0
        self.start_time = None
        
    def start_mining(self):
        """Start mining operations"""
        if self.mining:
            return
            
        self.mining = True
        self.start_time = time.time()
        self.logger.info("Started mining operations")
        
        # Get initial block template
        template = self._get_block_template()
        
        while self.mining:
            # Mine blocks using massive GPU array (1B GPUs)
            block_data = template['block_data']
            
            # Distribute across GPU clusters (1M blocks per cluster)
            results = []
            for cluster in range(1000):  # 1000 clusters
                cluster_result = self.gpu_manager.start_mining(
                    block_data, 
                    gpu_start=cluster * 1_000_000,
                    gpu_end=(cluster + 1) * 1_000_000
                )
                results.append(cluster_result)
            
            # Check results from all clusters
            for result in results:
                if self._check_block_valid(result, template['target']):
                    self._submit_block(result, template)
                    self.blocks_found += 1
                    break  # Found valid block, move to next template
                
                # Get new template for next block
                template = self._get_block_template()
                
    def stop_mining(self):
        """Stop mining operations"""
        self.mining = False
        self.gpu_manager.stop_mining()
        self.logger.info("Stopped mining operations")
        
    def get_mining_stats(self) -> Dict[str, Any]:
        """Get current mining statistics"""
        gpu_stats = self.gpu_manager.get_mining_stats()
        
        return {
            'mining': self.mining,
            'blocks_found': self.blocks_found,
            'hash_rate': gpu_stats['hash_rate'],
            'active_gpus': gpu_stats['active_gpus'],
            'uptime': time.time() - (self.start_time or time.time()),
            'network': self.network
        }
        
    def _get_block_template(self) -> Dict[str, Any]:
        """Get new block template from network"""
        return self.service.getblocktemplate({
            'rules': ['segwit'],
            'capabilities': ['coinbasetxn', 'workid', 'coinbase/append']
        })
        
    def _check_block_valid(self, block_hash: int, target: int) -> bool:
        """Check if block hash meets difficulty target"""
        return block_hash < target
        
    def _submit_block(self, block_hash: int, template: Dict[str, Any]):
        """Submit solved block to network"""
        self.service.submitblock(
            block_hex=template['block_data'].hex(),
            params={'workid': template['workid']}
        )
