package kubernetes

import (
	httperror "github.com/portainer/libhttp/error"
	"github.com/portainer/libhttp/request"
	"github.com/portainer/libhttp/response"
	portainer "github.com/portainer/portainer/api"
	bolterrors "github.com/portainer/portainer/api/bolt/errors"
	"net/http"
)

// @id getKubernetesNodesLimits
// @summary Get CPU and memory limits of all nodes within k8s cluster
// @description Get CPU and memory limits of all nodes within k8s cluster
// @description **Access policy**: authorized
// @tags kubernetes
// @security jwt
// @accept json
// @produce json
// @param id path int true "Endpoint identifier"
// @success 200 {object} K8sNodesLimits "Success"
// @failure 400 "Invalid request"
// @failure 401 "Unauthorized"
// @failure 403 "Permission denied"
// @failure 404 "Endpoint not found"
// @failure 500 "Server error"
// @router /kubernetes/{id}/nodes_limits [get]
func (handler *Handler) getKubernetesNodesLimits(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
	endpointID, err := request.RetrieveNumericRouteVariableValue(r, "id")
	if err != nil {
		return &httperror.HandlerError{http.StatusBadRequest, "Invalid endpoint identifier route variable", err}
	}

	endpoint, err := handler.dataStore.Endpoint().Endpoint(portainer.EndpointID(endpointID))
	if err == bolterrors.ErrObjectNotFound {
		return &httperror.HandlerError{http.StatusNotFound, "Unable to find an endpoint with the specified identifier inside the database", err}
	} else if err != nil {
		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find an endpoint with the specified identifier inside the database", err}
	}

	cli, err := handler.kubernetesClientFactory.GetKubeClient(endpoint)
	if err != nil {
		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to create Kubernetes client", err}
	}

	nodesLimits, err := cli.GetNodesLimits()
	if err != nil {
		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve nodes limits", err}
	}

	return response.JSON(w, nodesLimits)
}