package settings

import (
	"os"
	"strings"
	"velvettear/dedupe/log"
)

// exported function(s)
func Initialize() {
	if len(os.Args) < 3 {
		log.Fatal("error: missing arguments")
	}
	for index, arg := range os.Args {
		arg = strings.ToLower(arg)
		switch arg {
		case "-m":
			fallthrough
		case "--move":
			moveDirectoryIndex := index + 1
			if moveDirectoryIndex >= len(os.Args) {
				log.Fatal("no move directory given")
			}
			setMoveDirectory(os.Args[index+1])
		case "-d":
			fallthrough
		case "--delete":
			setDelete(true)
		case "-v":
			fallthrough
		case "--verbose":
			setVerbose(true)
		}
	}
	setSourceDirectory(os.Args[1])
	setComparisonDirectory(os.Args[2])
	stats, error := os.Stat(SourceDirectory)
	if os.IsNotExist(error) {
		log.Fatal("given source directory does not exist", SourceDirectory)
	}
	if !stats.IsDir() {
		log.Fatal("given source directory is not a directory", SourceDirectory)
	}
	stats, error = os.Stat(ComparisonDirectory)
	if os.IsNotExist(error) {
		log.Fatal("given comparison directory does not exist", ComparisonDirectory)
	}
	if !stats.IsDir() {
		log.Fatal("given comparison directory is not a directory", ComparisonDirectory)
	}
}