package logfile

import (
	"path/filepath"

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

// 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
}