package sensor

import (
	"log"

	"github.com/go-flucky/flucky/pkg/config"
	"github.com/go-flucky/flucky/pkg/types"
	"github.com/spf13/cobra"
)

var (
	enabled      bool
	gpioIn       string
	i2cAddress   uint8
	i2cBus       int
	location     string
	tickDuration string
	wireID       string
)

var addSensorCmd = &cobra.Command{
	Use:     "add",
	Short:   "Add Sensor",
	Aliases: []string{"append"},
	Args:    cobra.ExactArgs(2),
	Example: `flucky sensor add --gpio GPIO14 indoor DHT11
flucky sensor add --wire-id 28-011432f0bb3d outdoor DS18B20
flucky sensor add --i2c-bus 1 --i2c-address 0x76 wetter-station BME280`,
	Run: func(cmd *cobra.Command, args []string) {
		// read configuration
		cnf, err := config.Read(*configFile)
		if err != nil {
			log.Fatalln(err)
		}

		// determine sensor model
		sensorModel, err := types.SelectSensorModel(args[1])
		if err != nil {
			log.Fatalln(err)
		}

		// create new sensor struct
		sensor := &types.Sensor{
			Name:         args[0],
			Model:        sensorModel,
			Location:     location,
			Enabled:      enabled,
			TickDuration: tickDuration,
		}

		// determine gpio port if set
		if gpioIn != "" &&
			i2cAddress == 0 &&
			i2cBus == 0 &&
			wireID == "" {
			gpio, err := types.StringToGPIO(gpioIn)
			if err != nil {
				log.Fatalln(err)
			}
			sensor.GPIONumber = &gpio
		}

		// set i2c connection settings
		if gpioIn == "" &&
			i2cAddress != 0 &&
			i2cBus != 0 &&
			wireID == "" {
			sensor.I2CAddress = &i2cAddress
			sensor.I2CBus = &i2cBus
		}

		// set wire connection settings
		if gpioIn == "" &&
			i2cAddress == 0 &&
			i2cBus == 0 &&
			wireID != "" {
			sensor.WireID = &wireID
		}

		// add sensor entry to list
		err = cnf.AddSensor(sensor)
		if err != nil {
			log.Fatalln(err)
		}

		// save new configuration
		err = config.Write(cnf, *configFile)
		if err != nil {
			log.Fatalln(err)
		}
	},
}

func init() {
	sensorCmd.AddCommand(addSensorCmd)

	addSensorCmd.Flags().BoolVar(&enabled, "enabled", true, "Enable new sensor")
	addSensorCmd.Flags().StringVar(&gpioIn, "gpio", "", "Defines the GPIO port")
	addSensorCmd.Flags().Uint8Var(&i2cAddress, "i2c-address", 0, "Defines the I2C address on the I2C bus")
	addSensorCmd.Flags().IntVar(&i2cBus, "i2c-bus", 0, "Defines the I2C bus")
	addSensorCmd.Flags().StringVar(&location, "location", "", "Location of the sensor")
	addSensorCmd.Flags().StringVar(&tickDuration, "tick-duration", "1m", "Controls how often values should be read from the sensor when running flucky in daemon mode")
	addSensorCmd.Flags().StringVar(&wireID, "wire-id", "", "Defines the Wire-ID")
}