fix_engine.py

#!/usr/bin/env python3
"""
FixOps Fix Engine - Provides automated fix recommendations and remediation
"""

import structlog
from typing import Dict, List, Optional, Any
from dataclasses import dataclass

logger = structlog.get_logger()

@dataclass
class FixRecommendation:
    """Fix recommendation data structure"""
    fix_id: str
    title: str
    description: str
    fix_type: str  # "code_change", "config_change", "dependency_update", etc.
    confidence: float
    effort_estimate: str  # "low", "medium", "high"
    automated: bool
    fix_content: Optional[str] = None
    validation_steps: Optional[List[str]] = None

class FixEngine:
    """Fix Engine for automated remediation recommendations"""
    
    def __init__(self):
        self.initialized = False
        logger.info("Fix Engine initializing...")
    
    async def initialize(self):
        """Initialize the fix engine"""
        try:
            self.initialized = True
            logger.info("Fix Engine initialized successfully")
        except Exception as e:
            logger.error("Fix Engine initialization failed", error=str(e))
            raise
    
    async def get_fix_recommendations(self, finding_id: str, context: Dict[str, Any] = None) -> List[FixRecommendation]:
        """Get fix recommendations for a security finding"""
        if not self.initialized:
            await self.initialize()
        
        # Demo mode - return sample fix recommendations
        return [
            FixRecommendation(
                fix_id=f"FIX-{finding_id}-001",
                title="Update vulnerable dependency",
                description="Update the vulnerable package to the latest secure version",
                fix_type="dependency_update",
                confidence=0.9,
                effort_estimate="low",
                automated=True,
                fix_content="npm update vulnerable-package@latest",
                validation_steps=["Run security scan", "Execute test suite"]
            ),
            FixRecommendation(
                fix_id=f"FIX-{finding_id}-002", 
                title="Apply security patch",
                description="Apply the recommended security patch for this vulnerability",
                fix_type="code_change",
                confidence=0.8,
                effort_estimate="medium",
                automated=False,
                validation_steps=["Code review", "Security testing"]
            )
        ]
    
    async def apply_automated_fix(self, fix_id: str) -> Dict[str, Any]:
        """Apply an automated fix"""
        if not self.initialized:
            await self.initialize()
        
        logger.info("Applying automated fix", fix_id=fix_id)
        
        # Demo mode - simulate fix application
        return {
            "fix_id": fix_id,
            "status": "applied",
            "message": "Automated fix applied successfully",
            "validation_required": True
        }
    
    async def validate_fix(self, fix_id: str) -> Dict[str, Any]:
        """Validate that a fix was applied correctly"""
        if not self.initialized:
            await self.initialize()
        
        logger.info("Validating fix", fix_id=fix_id)
        
        # Demo mode - simulate fix validation
        return {
            "fix_id": fix_id,
            "validation_status": "passed",
            "tests_passed": 5,
            "tests_failed": 0,
            "security_scan_clean": True
        }

# Global fix engine instance
fix_engine = FixEngine()