ThreatHunt/backend/app/core/playbook_engine.py

"""
Playbook Execution Engine

Executes automated response playbooks based on triggers.
"""

from typing import Dict, Any, List
from datetime import datetime, timezone
import asyncio


class PlaybookEngine:
    """Engine for executing playbooks"""
    
    def __init__(self):
        """Initialize playbook engine"""
        self.actions_registry = {
            "send_notification": self._action_send_notification,
            "create_case": self._action_create_case,
            "isolate_host": self._action_isolate_host,
            "collect_artifact": self._action_collect_artifact,
            "block_ip": self._action_block_ip,
            "send_email": self._action_send_email,
        }
    
    async def execute_playbook(
        self,
        playbook: Dict[str, Any],
        context: Dict[str, Any]
    ) -> Dict[str, Any]:
        """
        Execute a playbook
        
        Args:
            playbook: Playbook definition
            context: Execution context with relevant data
        
        Returns:
            Execution result
        """
        results = []
        errors = []
        
        actions = playbook.get("actions", [])
        
        for action in actions:
            action_type = action.get("type")
            action_params = action.get("params", {})
            
            try:
                # Get action handler
                handler = self.actions_registry.get(action_type)
                if not handler:
                    errors.append(f"Unknown action type: {action_type}")
                    continue
                
                # Execute action
                result = await handler(action_params, context)
                results.append({
                    "action": action_type,
                    "status": "success",
                    "result": result
                })
            except Exception as e:
                errors.append(f"Error in action {action_type}: {str(e)}")
                results.append({
                    "action": action_type,
                    "status": "failed",
                    "error": str(e)
                })
        
        return {
            "status": "completed" if not errors else "completed_with_errors",
            "results": results,
            "errors": errors
        }
    
    async def _action_send_notification(
        self,
        params: Dict[str, Any],
        context: Dict[str, Any]
    ) -> Dict[str, Any]:
        """Send a notification"""
        # In production, this would create a notification in the database
        # and push it via WebSocket
        return {
            "notification_sent": True,
            "message": params.get("message", "Playbook notification")
        }
    
    async def _action_create_case(
        self,
        params: Dict[str, Any],
        context: Dict[str, Any]
    ) -> Dict[str, Any]:
        """Create a new case"""
        # In production, this would create a case in the database
        return {
            "case_created": True,
            "case_title": params.get("title", "Automated Case"),
            "case_id": "placeholder_id"
        }
    
    async def _action_isolate_host(
        self,
        params: Dict[str, Any],
        context: Dict[str, Any]
    ) -> Dict[str, Any]:
        """Isolate a host"""
        # In production, this would call Velociraptor or other tools
        # to isolate the host from the network
        host_id = params.get("host_id")
        return {
            "host_isolated": True,
            "host_id": host_id
        }
    
    async def _action_collect_artifact(
        self,
        params: Dict[str, Any],
        context: Dict[str, Any]
    ) -> Dict[str, Any]:
        """Collect an artifact from a host"""
        # In production, this would trigger Velociraptor collection
        return {
            "collection_started": True,
            "artifact": params.get("artifact_name"),
            "client_id": params.get("client_id")
        }
    
    async def _action_block_ip(
        self,
        params: Dict[str, Any],
        context: Dict[str, Any]
    ) -> Dict[str, Any]:
        """Block an IP address"""
        # In production, this would update firewall rules
        ip_address = params.get("ip_address")
        return {
            "ip_blocked": True,
            "ip_address": ip_address
        }
    
    async def _action_send_email(
        self,
        params: Dict[str, Any],
        context: Dict[str, Any]
    ) -> Dict[str, Any]:
        """Send an email"""
        # In production, this would send an actual email
        return {
            "email_sent": True,
            "to": params.get("to"),
            "subject": params.get("subject")
        }


def get_playbook_engine() -> PlaybookEngine:
    """
    Factory function to create playbook engine
    
    Returns:
        Configured PlaybookEngine instance
    """
    return PlaybookEngine()