# modules/diagnostics.py - System Diagnostics Module
from fastapi import APIRouter
import psutil
from datetime import datetime

def register_module(app, client, username):
    """Register diagnostics module with FastAPI app"""
    router = APIRouter()
    
    @router.get("/diagnostics/health")
    async def diagnostics_health():
        """Basic system health check"""
        cpu = psutil.cpu_percent()
        memory = psutil.virtual_memory()
        
        return {
            "module": "diagnostics",
            "status": "active",
            "system": {
                "cpu_usage": cpu,
                "memory_used": memory.percent,
                "memory_available": memory.available / (1024**3),  # GB
                "timestamp": datetime.now().isoformat()
            }
        }
    
    @router.get("/diagnostics/full")
    async def full_diagnostics():
        """Complete system diagnostics"""
        try:
            from modules.orchestrator import get_system_diagnostics
            return await get_system_diagnostics()
        except ImportError:
            return {
                "module": "diagnostics",
                "status": "fallback",
                "message": "Using basic diagnostics",
                "basic_metrics": {
                    "cpu": psutil.cpu_percent(),
                    "memory": psutil.virtual_memory().percent,
                    "disk": psutil.disk_usage('/').percent
                }
            }
    
    app.include_router(router)
    print("✅ Diagnostics module registered with FastAPI")

# Export function for direct imports
async def get_basic_metrics():
    """Get basic system metrics"""
    return {
        "cpu": psutil.cpu_percent(),
        "memory": psutil.virtual_memory().percent,
        "disk": psutil.disk_usage('/').percent,
        "timestamp": datetime.now().isoformat()
    }