PKGBUILD/cmd/cmd.go

package cmd

import (
	"fmt"
	"os"
	"time"

	"github.com/volker-raschek/flucky/cmd/daemon"
	"github.com/volker-raschek/flucky/cmd/sensor"
	"github.com/volker-raschek/flucky/cmd/temperature"
	"github.com/volker-raschek/flucky/pkg/types"

	uuid "github.com/satori/go.uuid"
	"github.com/spf13/cobra"
	"github.com/volker-raschek/flucky/pkg/config"
)

var configPath string

var rootCmd = &cobra.Command{
	Use:   "flucky",
	Short: "Read from sensors",
	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {

		// check if config file exists
		if _, err := os.Stat(configPath); os.IsNotExist(err) {
			hostname, err := os.Hostname()
			if err != nil {
				return fmt.Errorf("Can not locate the hostname: %v", err)
			}

			cnf := config.Configuration{
				Device: &types.Device{
					DeviceID:           uuid.NewV4().String(),
					DeviceName:         hostname,
					HumidityLogfile:    "/var/log/flucky/humidity.json",
					TemperatureLogfile: "/var/log/flucky/temperature.json",
					CreationDate:       time.Now(),
				},
			}

			err = config.Write(&cnf, configPath)
			if err != nil {
				return err
			}
		}

		return nil
	},
}

// Execute a
func Execute(version string) {
	rootCmd.Version = version

	rootCmd.PersistentFlags().StringVar(&configPath, "config", "/etc/flucky/config.json", "Config file")
	daemon.InitCmd(rootCmd, configPath)
	sensor.InitCmd(rootCmd, configPath)
	temperature.InitCmd(rootCmd, configPath)
	rootCmd.Execute()
}