package cmd

import (
	"strconv"

	"github.com/evcc-io/evcc/api"
	"github.com/evcc-io/evcc/util/config"
	"github.com/spf13/cobra"
)

// vehicleCmd represents the vehicle command
var vehicleCmd = &cobra.Command{
	Use:   "vehicle [name]",
	Short: "Query configured vehicles",
	Args:  cobra.MaximumNArgs(1),
	Run:   runVehicle,
}

func init() {
	rootCmd.AddCommand(vehicleCmd)
	vehicleCmd.Flags().Int64P(flagCurrent, "i", 0, flagCurrentDescription)
	vehicleCmd.Flags().BoolP(flagStart, "a", false, flagStartDescription)
	vehicleCmd.Flags().BoolP(flagStop, "o", false, flagStopDescription)
	vehicleCmd.Flags().BoolP(flagWakeup, "w", false, flagWakeupDescription)
	vehicleCmd.Flags().Bool(flagDiagnose, false, flagDiagnoseDescription)
	vehicleCmd.Flags().Bool(flagCloud, false, flagCloudDescription)
}

func runVehicle(cmd *cobra.Command, args []string) {
	// load config
	if err := loadConfigFile(&conf, !cmd.Flag(flagIgnoreDatabase).Changed); err != nil {
		fatal(err)
	}

	// setup environment
	if err := configureEnvironment(cmd, &conf); err != nil {
		fatal(err)
	}

	// use cloud
	if cmd.Flags().Lookup(flagCloud).Changed {
		for _, conf := range conf.Vehicles {
			conf.Other["cloud"] = "true"
		}
	}

	if err := configureVehicles(conf.Vehicles, args...); err != nil {
		fatal(err)
	}

	vehicles := config.Vehicles().Devices()

	var flagUsed bool
	for _, v := range config.Instances(vehicles) {
		if flag := cmd.Flags().Lookup(flagCurrent); flag.Changed {
			flagUsed = true

			f, err := strconv.ParseFloat(flag.Value.String(), 64)
			if err != nil {
				log.ERROR.Println("max current:", err)
			} else {
				if vv, ok := v.(api.ChargerEx); ok {
					if err := vv.MaxCurrentMillis(f); err != nil {
						log.ERROR.Println("max current:", err)
					}
				} else if vv, ok := v.(api.CurrentController); ok {
					if err := vv.MaxCurrent(int64(f)); err != nil {
						log.ERROR.Println("max current:", err)
					}
				} else {
					log.ERROR.Println("max current: not implemented")
				}
			}
		}

		if cmd.Flags().Lookup(flagWakeup).Changed {
			flagUsed = true

			if vv, ok := v.(api.Resurrector); ok {
				if err := vv.WakeUp(); err != nil {
					log.ERROR.Println("wakeup:", err)
				}
			} else {
				log.ERROR.Println("wakeup: not implemented")
			}
		}

		if cmd.Flags().Lookup(flagStart).Changed {
			flagUsed = true

			if vv, ok := v.(api.ChargeController); ok {
				if err := vv.ChargeEnable(true); err != nil {
					log.ERROR.Println("start charge:", err)
				}
			} else {
				log.ERROR.Println("start charge: not implemented")
			}
		}

		if cmd.Flags().Lookup(flagStop).Changed {
			flagUsed = true

			if vv, ok := v.(api.ChargeController); ok {
				if err := vv.ChargeEnable(false); err != nil {
					log.ERROR.Println("stop charge:", err)
				}
			} else {
				log.ERROR.Println("stop charge: not implemented")
			}
		}
	}

	if !flagUsed {
		d := dumper{len: len(vehicles)}
		flag := cmd.Flags().Lookup(flagDiagnose).Changed

		for _, dev := range vehicles {
			v := dev.Instance()

			d.DumpWithHeader(dev.Config().Name, v)
			if flag {
				d.DumpDiagnosis(v)
			}
		}
	}

	// wait for shutdown
	<-shutdownDoneC()
}