package cmpSnipper

	import (
		"fmt"
		"log"
		"time"
		"encoding/json"
	)

	func (app *App) LogMod(arg interface{}) string {
		var add bool  = false
		var str string
		var prf string

		switch t := arg.(type) {
			case nil:
				prf = "N:"
				str = "null"

			case string:
				prf = "S:"
				str = t

			case error:
				prf = "E:"
				str = t.Error()

			case byte:
				prf = "B:"
				str = string(t)

			case []byte:
				prf = "A:"
				str = string(t)

			case interface{}:
				prf = "J:"
				obyte, _ := json.MarshalIndent(arg, "", "\t")
				str = string(obyte)

			default:
				prf = "U:"
				str = fmt.Sprintf("Unknown type %T", t)
		}

		if add {
			str = prf + str
		}

		return str
	}

	func (app *App) Log(farg any, iargs ...interface{}) {
		var str = app.LogMod(farg)

		log.SetPrefix(time.Now().UTC().Format("2006-01-02 15:04:05") + ": ")

		oargs :=  make([]interface{}, len(iargs))

		for k, arg := range iargs {
			oargs[k] = app.LogMod(arg)
		}

		log.Output(2, fmt.Sprintf(str + "\n", oargs...))
	}

	func (app *App) LogSetup() {
		log.SetFlags( log.Lshortfile );
	}