package compression

import (
	"github.com/volker-raschek/flucky/pkg/storage"
	"github.com/volker-raschek/flucky/pkg/storage/logfile"

	"github.com/spf13/cobra"
)

var (
	round float64
)

// InitCmd initialize all compression subcommands
func InitCmd(cmd *cobra.Command) error {

	compressionCmd := &cobra.Command{
		Use:     "compression",
		Short:   "Compress a logfile",
		Args:    cobra.ExactArgs(1),
		Example: "flucky compression /var/log/flucky/logfile.csv",
		RunE:    run,
	}

	compressionCmd.Flags().Float64Var(&round, "round", 0, "Round values. The value 0 deactivates the function")
	cmd.AddCommand(compressionCmd)

	return nil
}

func run(cmd *cobra.Command, args []string) error {
	logfileInput := logfile.New(args[0])
	measuredValues, err := logfileInput.Read()
	if err != nil {
		return err
	}

	if round != 0 {
		storage.Round(measuredValues, round)
	}

	storage.Compression(measuredValues)

	err = logfileInput.Write(measuredValues)
	if err != nil {
		return err
	}

	return nil
}