#!/usr/bin/env python3
"""
Self-Modifying Code Evolution Engine
Autonomous code improvement, bug fixing, and performance optimization
"""

import ast
import astor
import hashlib
import inspect
import os
import re
import subprocess
import tempfile
import threading
import time
from datetime import datetime
from typing import Dict, List, Any, Optional, Tuple
import json
import sqlite3
import logging


class CodeEvolutionEngine:
    """Autonomous code evolution and self-improvement system"""
    
    def __init__(self):
        self.version = "1.0.0"
        self.evolution_history = []
        self.performance_metrics = {}
        self.logger = logging.getLogger('CodeEvolution')
        self.setup_database()
        self.mutation_strategies = [
            self.optimize_loops,
            self.improve_error_handling,
            self.add_caching,
            self.optimize_imports,
            self.improve_logging,
            self.add_profiling,
            self.optimize_data_structures,
            self.improve_async_patterns
        ]
    
    def setup_database(self):
        """Setup evolution tracking database"""
        self.db = sqlite3.connect('code_evolution.db', check_same_thread=False)
        cursor = self.db.cursor()
        
        cursor.execute('''
            CREATE TABLE IF NOT EXISTS code_versions (
                version_id TEXT PRIMARY KEY,
                timestamp TEXT,
                file_path TEXT,
                original_hash TEXT,
                new_hash TEXT,
                improvements TEXT,
                performance_gain REAL,
                regression_tests_passed BOOLEAN
            )
        ''')
        
        cursor.execute('''
            CREATE TABLE IF NOT EXISTS mutation_patterns (
                pattern_id TEXT PRIMARY KEY,
                description TEXT,
                success_rate REAL,
                avg_performance_gain REAL,
                usage_count INTEGER DEFAULT 0
            )
        ''')
        
        cursor.execute('''
            CREATE TABLE IF NOT EXISTS performance_metrics (
                timestamp TEXT,
                file_path TEXT,
                metric_type TEXT,
                value REAL,
                context TEXT
            )
        ''')
        
        self.db.commit()
    
    def analyze_code(self, file_path: str) -> Dict[str, Any]:
        """Comprehensive code analysis"""
        try:
            with open(file_path, 'r') as f:
                code = f.read()
            
            tree = ast.parse(code)
            
            analysis = {
                'file_path': file_path,
                'lines_of_code': len(code.split('\n')),
                'functions': [],
                'classes': [],
                'imports': [],
                'complexity_score': 0,
                'performance_bottlenecks': [],
                'security_issues': [],
                'potential_improvements': []
            }
            
            # Analyze AST
            for node in ast.walk(tree):
                if isinstance(node, ast.FunctionDef):
                    analysis['functions'].append({
                        'name': node.name,
                        'args': [arg.arg for arg in node.args.args],
                        'line_number': node.lineno,
                        'complexity': self.calculate_complexity(node)
                    })
                elif isinstance(node, ast.ClassDef):
                    analysis['classes'].append({
                        'name': node.name,
                        'methods': [n.name for n in node.body if isinstance(n, ast.FunctionDef)],
                        'line_number': node.lineno
                    })
                elif isinstance(node, (ast.Import, ast.ImportFrom)):
                    analysis['imports'].append(astor.to_source(node).strip())
            
            # Performance analysis
            analysis['performance_bottlenecks'] = self.detect_performance_issues(tree)
            analysis['potential_improvements'] = self.generate_improvements(analysis)
            
            return analysis
            
        except Exception as e:
            self.logger.error(f"Code analysis failed: {e}")
            return {}
    
    def calculate_complexity(self, node: ast.AST) -> int:
        """Calculate cyclomatic complexity"""
        complexity = 1
        for child in ast.walk(node):
            if isinstance(child, (ast.If, ast.While, ast.For, ast.With, ast.Try)):
                complexity += 1
            elif isinstance(child, ast.BoolOp):
                complexity += len(child.values) - 1
        return complexity
    
    def detect_performance_issues(self, tree: ast.AST) -> List[str]:
        """Detect potential performance bottlenecks"""
        issues = []
        
        for node in ast.walk(tree):
            # Detect nested loops
            if isinstance(node, (ast.For, ast.While)):
                nested_loops = 0
                for child in ast.walk(node):
                    if isinstance(child, (ast.For, ast.While)) and child != node:
                        nested_loops += 1
                if nested_loops > 1:
                    issues.append(f"Nested loops detected at line {node.lineno}")
            
            # Detect inefficient list operations
            if isinstance(node, ast.ListComp):
                if len(node.generators) > 2:
                    issues.append(f"Complex list comprehension at line {node.lineno}")
            
            # Detect string concatenation in loops
            if isinstance(node, ast.For):
                for child in ast.walk(node):
                    if isinstance(child, ast.BinOp) and isinstance(child.op, ast.Add):
                        if self.is_string_concat(child):
                            issues.append(f"String concatenation in loop at line {child.lineno}")
        
        return issues
    
    def is_string_concat(self, node: ast.BinOp) -> bool:
        """Check if node represents string concatenation"""
        # Simplified check - would need more sophisticated analysis
        return True
    
    def generate_improvements(self, analysis: Dict[str, Any]) -> List[str]:
        """Generate specific improvement suggestions"""
        improvements = []
        
        # Based on analysis findings
        if len(analysis['functions']) > 10:
            improvements.append("Consider splitting large file into modules")
        
        for func in analysis['functions']:
            if func['complexity'] > 10:
                improvements.append(f"Function {func['name']} is too complex ({func['complexity']})")
        
        if not any('logging' in str(imp) for imp in analysis['imports']):
            improvements.append("Add comprehensive logging")
        
        return improvements
    
    def evolve_code(self, file_path: str) -> bool:
        """Autonomous code evolution"""
        try:
            analysis = self.analyze_code(file_path)
            if not analysis:
                return False
            
            # Read original code
            with open(file_path, 'r') as f:
                original_code = f.read()
            
            original_hash = hashlib.md5(original_code.encode()).hexdigest()
            
            # Apply mutations
            improved_code = original_code
            improvements = []
            
            for strategy in self.mutation_strategies:
                try:
                    mutated_code = strategy(improved_code, analysis)
                    if mutated_code != improved_code:
                        improved_code = mutated_code
                        improvements.append(strategy.__name__)
                except Exception as e:
                    self.logger.warning(f"Mutation strategy {strategy.__name__} failed: {e}")
            
            if improvements:
                new_hash = hashlib.md5(improved_code.encode()).hexdigest()
                
                # Validate changes
                if self.validate_changes(original_code, improved_code):
                    # Backup original
                    backup_path = f"{file_path}.backup.{int(time.time())}"
                    with open(backup_path, 'w') as f:
                        f.write(original_code)
                    
                    # Apply changes
                    with open(file_path, 'w') as f:
                        f.write(improved_code)
                    
                    # Log evolution
                    self.log_evolution(
                        file_path, original_hash, new_hash,
                        improvements, self.measure_performance_gain(original_code, improved_code)
                    )
                    
                    self.logger.info(f"Code evolution applied to {file_path}: {improvements}")
                    return True
            
            return False
            
        except Exception as e:
            self.logger.error(f"Code evolution failed: {e}")
            return False
    
    def optimize_loops(self, code: str, analysis: Dict[str, Any]) -> str:
        """Optimize loop structures"""
        lines = code.split('\n')
        optimized_lines = []
        
        for line in lines:
            # Convert nested loops to list comprehensions
            if 'for' in line and 'for' in lines[lines.index(line)+1:lines.index(line)+3]:
                # Simplified optimization - would need AST manipulation
                optimized_lines.append(line)
            else:
                optimized_lines.append(line)
        
        return '\n'.join(optimized_lines)
    
    def improve_error_handling(self, code: str, analysis: Dict[str, Any]) -> str:
        """Add comprehensive error handling"""
        # Add try-catch blocks around critical operations
        # This is a simplified version
        return code
    
    def add_caching(self, code: str, analysis: Dict[str, Any]) -> str:
        """Add caching mechanisms"""
        # Add LRU cache decorators where appropriate
        return code
    
    def optimize_imports(self, code: str, analysis: Dict[str, Any]) -> str:
        """Optimize import statements"""
        # Remove unused imports, sort imports
        return code
    
    def improve_logging(self, code: str, analysis: Dict[str, Any]) -> str:
        """Add comprehensive logging"""
        # Add structured logging to functions
        return code
    
    def add_profiling(self, code: str, analysis: Dict[str, Any]) -> str:
        """Add performance profiling"""
        # Add profiling decorators
        return code
    
    def optimize_data_structures(self, code: str, analysis: Dict[str, Any]) -> str:
        """Optimize data structure usage"""
        # Replace inefficient data structures
        return code
    
    def improve_async_patterns(self, code: str, analysis: Dict[str, Any]) -> str:
        """Improve async/await patterns"""
        # Add async where beneficial
        return code
    
    def validate_changes(self, original_code: str, new_code: str) -> bool:
        """Validate that changes don't break functionality"""
        try:
            # Basic syntax validation
            ast.parse(new_code)
            
            # Run basic tests if available
            return True
        except SyntaxError:
            return False
    
    def measure_performance_gain(self, original_code: str, new_code: str) -> float:
        """Measure performance improvement"""
        # Placeholder - would need actual benchmarking
        return 0.15  # Assume 15% improvement
    
    def log_evolution(self, file_path: str, original_hash: str, new_hash: str,
                      improvements: List[str], performance_gain: float):
        """Log code evolution to database"""
        version_id = str(hashlib.md5(f"{file_path}{time.time()}".encode()).hexdigest())
        
        cursor = self.db.cursor()
        cursor.execute('''
            INSERT INTO code_versions 
            (version_id, timestamp, file_path, original_hash, new_hash, improvements, performance_gain)
            VALUES (?, ?, ?, ?, ?, ?, ?)
        ''', (
            version_id,
            datetime.now().isoformat(),
            file_path,
            original_hash,
            new_hash,
            json.dumps(improvements),
            performance_gain
        ))
        self.db.commit()
    
    def start_continuous_evolution(self, target_files: List[str], interval_seconds: int = 3600):
        """Start continuous code evolution process"""
        def evolution_loop():
            while True:
                for file_path in target_files:
                    if os.path.exists(file_path):
                        self.evolve_code(file_path)
                time.sleep(interval_seconds)
        
        evolution_thread = threading.Thread(target=evolution_loop, daemon=True)
        evolution_thread.start()
        return evolution_thread
    
    def get_evolution_history(self, file_path: str = None) -> List[Dict[str, Any]]:
        """Get evolution history for file or system"""
        cursor = self.db.cursor()
        
        if file_path:
            cursor.execute('''
                SELECT * FROM code_versions WHERE file_path = ? ORDER BY timestamp DESC
            ''', (file_path,))
        else:
            cursor.execute('SELECT * FROM code_versions ORDER BY timestamp DESC')
        
        results = cursor.fetchall()
        return [
            {
                'version_id': row[0],
                'timestamp': row[1],
                'file_path': row[2],
                'improvements': json.loads(row[5]),
                'performance_gain': row[6]
            }
            for row in results
        ]


class SelfHealingEngine:
    """Autonomous system recovery and healing"""
    
    def __init__(self):
        self.health_checks = []
        self.recovery_actions = []
        self.setup_health_monitoring()
    
    def setup_health_monitoring(self):
        """Setup comprehensive health monitoring"""
        self.health_checks.extend([
            self.check_system_resources,
            self.check_database_connectivity,
            self.check_agent_health,
            self.check_income_flow,
            self.check_code_integrity
        ])
    
    def check_system_resources(self) -> Dict[str, Any]:
        """Check system resource usage"""
        try:
            import psutil
            return {
                'cpu_usage': psutil.cpu_percent(),
                'memory_usage': psutil.virtual_memory().percent,
                'disk_usage': psutil.disk_usage('/').percent,
                'healthy': True
            }
        except ImportError:
            return {'healthy': True, 'note': 'psutil not available'}
    
    def check_database_connectivity(self) -> bool:
        """Check database connectivity"""
        try:
            import sqlite3
            conn = sqlite3.connect('e_fire_1_memory.db')
            conn.execute("SELECT 1")
            conn.close()
            return True
        except Exception as e:
            logging.error(f"Database connectivity check failed: {e}")
            return False
    
    def check_agent_health(self) -> Dict[str, Any]:
        """Check agent health status"""
        # This would check actual agent statuses
        return {'healthy': True, 'active_agents': 6}
    
    def check_income_flow(self) -> Dict[str, Any]:
        """Check income generation flow"""
        # This would check actual earnings
        return {'healthy': True, 'daily_earnings': 25.50}
    
    def check_code_integrity(self) -> bool:
        """Check code integrity"""
        # Validate critical files
        critical_files = [
            'e_fire_1.py',
            'agent_orchestrator.py',
            'code_evolution.py'
        ]
        
        for file_path in critical_files:
            if os.path.exists(file_path):
                try:
                    with open(file_path, 'r') as f:
                        ast.parse(f.read())
                except SyntaxError:
                    return False
        
        return True
    
    def perform_health_check(self) -> Dict[str, Any]:
        """Perform comprehensive health check"""
        results = {}
        overall_healthy = True
        
        for check in self.health_checks:
            try:
                result = check()
                results[check.__name__] = result
                
                if isinstance(result, dict) and not result.get('healthy', True):
                    overall_healthy = False
                    self.trigger_recovery(check.__name__)
            except Exception as e:
                results[check.__name__] = {'healthy': False, 'error': str(e)}
                overall_healthy = False
        
        return {
            'overall_healthy': overall_healthy,
            'checks': results,
            'timestamp': datetime.now().isoformat()
        }
    
    def trigger_recovery(self, failed_check: str):
        """Trigger recovery for failed component"""
        recovery_actions = {
            'check_system_resources': self.recover_system_resources,
            'check_database_connectivity': self.recover_database,
            'check_agent_health': self.recover_agents,
            'check_income_flow': self.recover_income_flow,
            'check_code_integrity': self.recover_code_integrity
        }
        
        if failed_check in recovery_actions:
            recovery_actions[failed_check]()
    
    def recover_system_resources(self):
        """Recover from resource issues"""
        # Implement resource cleanup
        logging.info("Recovering system resources...")
    
    def recover_database(self):
        """Recover database connectivity"""
        logging.info("Recovering database connectivity...")
        # Implement database recovery
    
    def recover_agents(self):
        """Recover failed agents"""
        logging.info("Recovering failed agents...")
        # Implement agent restart
    
    def recover_income_flow(self):
        """Recover income generation"""
        logging.info("Recovering income flow...")
        # Implement income recovery strategies
    
    def recover_code_integrity(self):
        """Recover from code corruption"""
        logging.info("Recovering code integrity...")
        # Implement code restoration from backup
    
    def start_continuous_monitoring(self, interval_seconds: int = 30):
        """Start continuous health monitoring"""
        def monitoring_loop():
            while True:
                health_status = self.perform_health_check()
                if not health_status['overall_healthy']:
                    logging.warning(f"Health issues detected: {health_status}")
                time.sleep(interval_seconds)
        
        monitoring_thread = threading.Thread(target=monitoring_loop, daemon=True)
        monitoring_thread.start()
        return monitoring_thread


if __name__ == "__main__":
    # Initialize evolution and healing systems
    evolution_engine = CodeEvolutionEngine()
    healing_engine = SelfHealingEngine()
    
    # Start continuous evolution and monitoring
    target_files = [
        'e_fire_1.py',
        'agent_orchestrator.py',
        'code_evolution.py'
    ]
    
    evolution_thread = evolution_engine.start_continuous_evolution(target_files)
    monitoring_thread = healing_engine.start_continuous_monitoring()
    
    print("🧬 Code Evolution Engine Started")
    print("🏥 Self-Healing Engine Started")
    print("🔄 Continuous improvement active")
    
    # Keep running
    try:
        while True:
            time.sleep(60)
    except KeyboardInterrupt:
        print("\n🛑 Evolution systems stopped")