package main

import (
	"errors"
	"fmt"
	"log"
	"os"
)

// ensure a directory exists at a given path. Output toggles whether or not it tells the user a new directory will be created.
func EnsureDir(path string, output bool) []os.DirEntry {
	dir, err := os.ReadDir(path)
	if err != nil {
		if !errors.Is(err, os.ErrNotExist) {
			log.Panic(err)
		}

		fmt.Printf("The '%s' directory does not exist yet. Creating it for you... ", path)
		err := os.Mkdir(path, os.ModePerm)
		if err != nil {
			log.Panic(err)
		}
		fmt.Print("Done!\n")

		dir, err = os.ReadDir(path)
		if err != nil {
			log.Panic(err) // it's over
		}
	}
	return dir
}

// removes all files and subdirectories in the given path.
// if the directory does not exist, it creates a new one.
func ClearDir(path string) {
	_, err := os.ReadDir(path)
	if err == nil { // error means "doesn't exist". Permissions shouldnt be an issue.
		os.RemoveAll(path)
	}
	EnsureDir(path, false)
}