import hashlib
from dataclasses import dataclass
from typing import List, Dict, Optional
from datetime import datetime
import json
import hmac
import time

@dataclass
class EvidenceRecord:
    timestamp: float
    action_type: str
    dimensional_space: int
    source_ip: str
    attack_pattern: List[str]
    system_responses: List[str]
    raw_data: bytes
    chain_hash: str
    blockchain_verification: str
    witness_validators: List[str]

class LegalEvidenceCollector:
    def __init__(self):
        self.evidence_chain = []
        self.validator_nodes = []
        self.case_files = {}
        
    async def collect_evidence(
        self,
        incident_data: Dict,
        dimensional_space: int
    ) -> EvidenceRecord:
        """Collect and validate evidence from security incidents"""
        
        # Generate raw evidence data
        raw_data = self._prepare_raw_data(incident_data)
        
        # Create chain hash including previous evidence
        chain_hash = self._generate_chain_hash(raw_data)
        
        # Get blockchain verification
        blockchain_verify = await self._blockchain_verify(chain_hash)
        
        # Collect validator signatures
        validators = await self._collect_validator_signatures(chain_hash)
        
        evidence = EvidenceRecord(
            timestamp=time.time(),
            action_type=incident_data['type'],
            dimensional_space=dimensional_space,
            source_ip=incident_data['source'],
            attack_pattern=incident_data['pattern'],
            system_responses=incident_data['responses'],
            raw_data=raw_data,
            chain_hash=chain_hash,
            blockchain_verification=blockchain_verify,
            witness_validators=validators
        )
        
        self.evidence_chain.append(evidence)
        return evidence

    def create_case_file(self, case_id: str, evidence_list: List[EvidenceRecord]) -> Dict:
        """Create a legal case file from collected evidence"""
        case_file = {
            'case_id': case_id,
            'opened_date': datetime.now().isoformat(),
            'evidence_count': len(evidence_list),
            'evidence_chain': [],
            'chain_validation': self._validate_evidence_chain(evidence_list),
            'jurisdiction_data': self._prepare_jurisdiction_data(),
            'validation_signatures': []
        }
        
        # Process each piece of evidence
        for evidence in evidence_list:
            case_file['evidence_chain'].append({
                'timestamp': evidence.timestamp,
                'type': evidence.action_type,
                'dimension': evidence.dimensional_space,
                'source': evidence.source_ip,
                'pattern': evidence.attack_pattern,
                'responses': evidence.system_responses,
                'chain_hash': evidence.chain_hash,
                'blockchain_verify': evidence.blockchain_verification,
                'validators': evidence.witness_validators
            })
            
        # Add validation signatures
        case_file['validation_signatures'] = self._sign_case_file(case_file)
        
        self.case_files[case_id] = case_file
        return case_file

    def _prepare_raw_data(self, incident_data: Dict) -> bytes:
        """Prepare and serialize raw evidence data"""
        evidence_data = {
            'timestamp': time.time(),
            'incident': incident_data,
            'system_state': self._capture_system_state(),
            'environment_data': self._capture_environment_data()
        }
        return json.dumps(evidence_data, sort_keys=True).encode()

    def _generate_chain_hash(self, raw_data: bytes) -> str:
        """Generate cryptographic hash linking to previous evidence"""
        previous_hash = (self.evidence_chain[-1].chain_hash.encode() 
                        if self.evidence_chain else b'genesis')
        
        return hashlib.sha3_512(previous_hash + raw_data).hexdigest()

    async def _blockchain_verify(self, chain_hash: str) -> str:
        """Create blockchain verification of evidence"""
        # Implement blockchain verification
        # This would interact with actual blockchain in production
        return f"blockchain_verification_{chain_hash[:16]}"

    async def _collect_validator_signatures(self, chain_hash: str) -> List[str]:
        """Collect signatures from validator nodes"""
        signatures = []
        for validator in self.validator_nodes:
            # In production, this would collect actual validator signatures
            signature = hmac.new(
                validator.encode(),
                chain_hash.encode(),
                hashlib.sha3_256
            ).hexdigest()
            signatures.append(signature)
        return signatures

    def _validate_evidence_chain(self, evidence_list: List[EvidenceRecord]) -> bool:
        """Validate the integrity of the evidence chain"""
        for i in range(1, len(evidence_list)):
            current = evidence_list[i]
            previous = evidence_list[i-1]
            
            # Verify hash chain
            verify_hash = hashlib.sha3_512(
                previous.chain_hash.encode() + current.raw_data
            ).hexdigest()
            
            if verify_hash != current.chain_hash:
                return False
                
        return True

    def _prepare_jurisdiction_data(self) -> Dict:
        """Prepare relevant jurisdiction information"""
        return {
            'applicable_laws': [
                'CFAA',  # Computer Fraud and Abuse Act
                'GDPR',
                'CCPA'
            ],
            'jurisdiction_notes': [
                'Federal cybercrime statutes apply',
                'International data protection laws may apply',
                'State-specific cybercrime laws may apply'
            ]
        }

    def _sign_case_file(self, case_file: Dict) -> List[str]:
        """Create cryptographic signatures for the case file"""
        case_data = json.dumps(case_file, sort_keys=True).encode()
        signatures = []
        
        # In production, this would use proper key management
        for validator in self.validator_nodes:
            signature = hmac.new(
                validator.encode(),
                case_data,
                hashlib.sha3_256
            ).hexdigest()
            signatures.append(signature)
            
        return signatures

    def _capture_system_state(self) -> Dict:
        """Capture relevant system state information"""
        return {
            'timestamp': time.time(),
            'system_integrity': self._check_system_integrity(),
            'security_status': self._get_security_status(),
            'active_defenses': self._list_active_defenses()
        }

    def _capture_environment_data(self) -> Dict:
        """Capture environmental data for context"""
        return {
            'timestamp': time.time(),
            'network_state': self._get_network_state(),
            'security_alerts': self._get_security_alerts(),
            'system_logs': self._get_relevant_logs()
        }

    # Helper methods to be implemented based on system requirements
    def _check_system_integrity(self) -> Dict:
        """Verify system integrity"""
        pass

    def _get_security_status(self) -> Dict:
        """Get current security status"""
        pass

    def _list_active_defenses(self) -> List[str]:
        """List currently active defense mechanisms"""
        pass

    def _get_network_state(self) -> Dict:
        """Get current network state"""
        pass

    def _get_security_alerts(self) -> List[Dict]:
        """Get relevant security alerts"""
        pass

    def _get_relevant_logs(self) -> List[Dict]:
        """Get relevant system logs"""
        pass