package logfile

import (
	"path/filepath"

	"github.com/go-flucky/flucky/pkg/internal/format"
	"github.com/go-flucky/flucky/pkg/types"
)

// var validUUID = regexp.MustCompile("^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-4[a-fA-F0-9]{3}-[8|9|aA|bB][a-fA-F0-9]{3}-[a-fA-F0-9]{12}$")

// Append adds an array of several measured values to a logfile
func Append(logfile Logfile, measuredValues []*types.MeasuredValue) error {

	allMeasuredValues, err := logfile.Read()
	if err != nil {
		return err
	}

	allMeasuredValues = append(allMeasuredValues, measuredValues...)

	err = logfile.Write(allMeasuredValues)
	if err != nil {
		return err

	}

	return nil
}

// New returns a log file with basic functions for reading and writing data. The
// file extension of the logfile is taken into account to format the logfile
// into the correct format.
func New(logfile string) Logfile {

	ext := filepath.Ext(logfile)

	switch ext {
	case ".csv":
		return &csvLogfile{
			logfile: logfile,
		}
	case ".json":
		return &jsonLogfile{
			logfile: logfile,
		}
	case ".xml":
		return &xmlLogfile{
			logfile: logfile,
		}
	default:
		return &jsonLogfile{
			logfile: logfile,
		}
	}

}

func writeCreationDate(measuredValues []*types.MeasuredValue) error {
	now := format.FormatedTime()
	for _, measuredValue := range measuredValues {
		if measuredValue.CreationDate == nil {
			measuredValue.CreationDate = &now
		}
	}
	return nil
}