package main

import (
	"dwelling-upload/internal/configuration"
	"dwelling-upload/pkg/utils"
	"flag"
	"io/ioutil"
	"log"
	"os"
	"path"
	"time"
)

var configPath *string = flag.String("conf", "config.yaml", "path to configuration file")

func main() {
	flag.Parse()

	config, err := configuration.LoadConfiguration(*configPath)
	if err != nil {
		log.Fatalln(err)
	}
	_ = config

	uploadsDir, err := ioutil.ReadDir(config.Uploads.Directory)
	if err != nil {
		log.Fatalf("failed to open directory %s: %s\n", config.Uploads.Directory, err)
	}

	var deletedCount int64 = 0
	var deletedSize int64 = 0

	for _, entry := range uploadsDir {
		if time.Duration(entry.ModTime().UTC().Sub(time.Now().UTC()).Hours()) >= time.Duration(config.Uploads.Limits.KeepForHours)*time.Hour {
			if err := os.Remove(path.Join(config.Uploads.Directory, entry.Name())); err != nil {
				log.Fatalln("failed to remove file ", entry.Name(), ": ", err)
			}
			deletedSize += entry.Size()
			deletedCount++
		}
	}

	_, _, cFSz := utils.ConvertFileSize(deletedSize)

	log.Println(deletedCount, "file(s) in total of", cFSz, "was removed during this run.")
}