package cmd

import (
	"fmt"
	"math"
	"os"
	"time"

	"github.com/Masterminds/semver"
	"github.com/go-flucky/flucky/cmd/completion"
	"github.com/go-flucky/flucky/cmd/compression"
	"github.com/go-flucky/flucky/cmd/convert"
	"github.com/go-flucky/flucky/cmd/daemon"
	"github.com/go-flucky/flucky/cmd/humidity"
	"github.com/go-flucky/flucky/cmd/pressure"
	"github.com/go-flucky/flucky/cmd/rgbled"
	"github.com/go-flucky/flucky/cmd/sensor"
	"github.com/go-flucky/flucky/cmd/temperature"
	"github.com/go-flucky/flucky/pkg/types"

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

var configFile string

var rootCmd = &cobra.Command{
	Use:   "flucky",
	Short: "flucky - operate with differen sensors, his values and remote servers to synchronize measured values",
	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {

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

			// Time must be truncted for postgres. Postgres currently does not support
			// nanoseconds which is automatically include into the go time object
			t := time.Now()
			l, _ := time.LoadLocation("Europe/Berlin")
			t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second(), int(math.Round(float64(t.Nanosecond())/1000000)*1000000), l)

			// Default configuration
			cnf := config.Configuration{
				Device: &types.Device{
					ID:           uuid.NewV4().String(),
					Name:         hostname,
					CreationDate: t,
				},
				StorageEndpoint: "file:///var/log/flucky/logfile.csv",
			}

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

		return nil
	},
}

// Execute a
func Execute(version *semver.Version) {
	rootCmd.Version = version.String()

	rootCmd.PersistentFlags().StringVar(&configFile, "config", "/etc/flucky/config.json", "Config file")

	completion.InitCmd(rootCmd)
	compression.InitCmd(rootCmd, &configFile)
	convert.InitCmd(rootCmd, &configFile)
	daemon.InitCmd(rootCmd, &configFile)
	humidity.InitCmd(rootCmd, &configFile)
	pressure.InitCmd(rootCmd, &configFile)
	rgbled.InitCmd(rootCmd, &configFile)
	sensor.InitCmd(rootCmd, &configFile)
	temperature.InitCmd(rootCmd, &configFile)
	rootCmd.Execute()
}