from fastapi import APIRouter, Response
from database import fetch_all
import yaml
import json
from kubernetes import client, config

router = APIRouter()

def fetch_k8s_data():
    config.load_incluster_config()
    v1 = client.CoreV1Api()
    nodes = [{
        "node_name": node.metadata.name,
        "cpu": node.status.capacity.get("cpu"),
        "memory": node.status.capacity.get("memory"),
        "pods_allocatable": node.status.allocatable.get("pods"),
    } for node in v1.list_node().items]

    namespaces = [ns.metadata.name for ns in v1.list_namespace().items]
    return {"nodes": nodes, "namespaces": namespaces}

@router.get("/export")
def export_data(format: str = "yaml"):
    data = {
        "metal_nodes": fetch_all("metal_nodes"),
        "virtual_machines": fetch_all("virtual_machines"),
        "kubernetes": fetch_k8s_data_with_usage(),
    }

    if format.lower() == "yaml":
        yaml_data = yaml.safe_dump(data, sort_keys=False)
        return Response(content=yaml_data, media_type="text/yaml")
    
    return json.dumps(data, indent=2)