package exporters

import (
	"context"
	"encoding/xml"
	"log"

	"github.com/dnaeon/go-ucs/api"
	"github.com/dnaeon/go-ucs/mo"
	"github.com/prometheus/client_golang/prometheus"
)

type UcsmTemperaturesCollector struct {
	ucsClient *api.Client
	ctx       context.Context
}

/*
	type ComputeMbTempStats struct {
		XMLName       xml.Name `xml:"computeMbTempStats"`
		Dn            string   `xml:"dn,attr,omitempty"`
		FmTempSenIo   string   `xml:"fmTempSenIo,attr,omitempty"`
		FmTempSenRear string   `xml:"fmTempSenRear,attr,omitempty"`
	}
*/
func NewUcsmTemperatureCollector(client *api.Client, ctx context.Context) *UcsmTemperaturesCollector {
	return &UcsmTemperaturesCollector{
		ucsClient: client,
		ctx:       ctx,
	}
}

// Describe prometheus describe
func (u *UcsmTemperaturesCollector) Describe(ch chan<- *prometheus.Desc) {
	log.Printf("Running Describe for UcsmTemperaturesCollector\n")
	ch <- prometheus.NewDesc("ucsm_temperature_sensor",
		"UCSM temperature sensor for motherboard/cpu/psu",
		[]string{"server", "component", "description"}, nil,
	)
	ch <- prometheus.NewDesc("ucsm_temperature_sensor",
		"UCSM temperature sensor for motherboard/cpu/psu",
		[]string{"server", "component", "description"}, nil,
	)
}

// Collect prometheus collect
func (u *UcsmTemperaturesCollector) Collect(ch chan<- prometheus.Metric) {
	// The type into which we unmarshal the result data
	type blades struct {
		XMLName xml.Name
		Blades  []mo.ComputeBlade `xml:"computeBlade"`
	}

	type temps struct {
		XMLName      xml.Name
		Temperatures []mo.ComputeMbTempStats `xml:"computeMbTempStats"`
	}

	bladeRequest := api.ConfigResolveClassRequest{
		Cookie:         u.ucsClient.Cookie,
		ClassId:        "computeBlade",
		InHierarchical: "false",
	}

	var bladeList blades

	log.Println("Retrieving managed objects with class `computeBlade`")

	if err := u.ucsClient.ConfigResolveClass(u.ctx, bladeRequest, &bladeList); err != nil {
		log.Fatalf("Unable to retrieve `computeBlade` managed object: %s", err)
	}

	log.Printf("Retrieved %d compute blades\n", len(bladeList.Blades))
	for _, blade := range bladeList.Blades {
		log.Printf("%s:\n", blade.Dn)

		boardDn := "^" + blade.Dn + "/board/"
		//boardDn := blade.Dn + "/board/"

		log.Printf("%s:\n", boardDn)
		log.Printf("\tNumber of CPUs: %d\n", blade.NumOfCpus)
		log.Printf("\tTotal Memory: %d\n", blade.TotalMemory)
		log.Printf("\tModel: %s\n", blade.Model)
		log.Printf("\tVendor: %s\n", blade.Vendor)
		//log.Printf("\tThermal: %v\n", blade.ComputeBoard.Thermal)

		filter := api.FilterWildcard{
			FilterProperty: api.FilterProperty{
				Class:    "computeMbTempStats",
				Property: "dn",
				Value:    boardDn,
			},
		}
		log.Printf("Filter: %v\n", filter)

		tempReq := api.ConfigResolveClassRequest{
			Cookie:         u.ucsClient.Cookie,
			ClassId:        "computeMbTempStats",
			InHierarchical: "false",
			InFilter:       filter,
		}

		var tempList temps
		log.Printf("Retrieving temperatures for this blade\n")
		/*
			if err := u.ucsClient.ConfigResolveClass(u.ctx, tempReq, &tempList); err != nil {
				log.Fatalf("Unable to retrieve `computeMbTempStats` managed object: %s", err)
			}
		*/
		u.ucsClient.ConfigResolveClass(u.ctx, tempReq, &tempList)
		log.Printf("Front Temperature: %v\n", tempList)
	}

}

/*
logger = logging.getLogger("UcsmTemperatureSensorCollector")

class UcsmTemperatureSensorCollector(BaseCollector):
    def get_metrics(self):
        return {
            "sensor": GaugeMetricFamily("ucsm_temperature_sensor",
                                        "UCSM temperature sensor for motherboard/cpu/psu",
                                        labels=['server', 'component',
                                                'description'])
        }

    def collect_metrics(self, server, handle):
        logger.debug("Collecting Metrics ")
        g = self.get_metrics()['sensor']

        mb_temp = handle.query_classid(NamingId.COMPUTE_MB_TEMP_STATS)
        for temp in mb_temp:
            value_rear = math.nan if temp.fm_temp_sen_rear == 'not-applicable' else temp.fm_temp_sen_rear
            g.add_metric(labels=[server, temp.dn, "motherboard_rear_temperature"],
                                    value=value_rear)
            value_io = math.nan if temp.fm_temp_sen_io == 'not-applicable' else temp.fm_temp_sen_io
            g.add_metric(labels=[server, temp.dn, "motherboard_front_temperature"],
                                    value=value_io)

        cpu_temp = handle.query_classid(NamingId.PROCESSOR_ENV_STATS)
        for temp in cpu_temp:
            g.add_metric(labels=[server, temp.dn, "cpu_temperature"],
                                    value=temp.temperature)

        psu_temp = handle.query_classid(NamingId.EQUIPMENT_PSU_STATS)
        for temp in psu_temp:
            g.add_metric(labels=[server, temp.dn, "psu_temperature"],
                                    value=temp.ambient_temp)
        yield g
*/