package flog

import (
	"fmt"
	"io"
	"strconv"
	"text/tabwriter"
)

// TextFormatter logs in a human readable format
type TextFormatter struct{}

// FormatMessage implements LogFormatType
func (l TextFormatter) FormatMessage(w io.Writer, entry LogEntry) {
	fmt.Fprintln(w, entry.Level, entry.Time.Format(`[2006-01-02 15:04:05]`), entry.Message)

	if len(entry.StackTrace) > 0 {
		tw := tabwriter.NewWriter(w, 1, 4, 4, ' ', 0)
		for _, v := range entry.StackTrace {
			fmt.Fprint(tw, `    `, v.Function, "\t", v.File+`:`+strconv.Itoa(v.Line), "\n")
		}
		tw.Flush()
	}

	w.Write([]byte{'\n'})
}