package main

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

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

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

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

	var deleted_count int64 = 0
	var deteted_size int64 = 0

	for _, entry := range uploads_dir {
		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)
			}
			deteted_size += entry.Size()
			deleted_count++
		}
	}

	log.Println(deleted_count, " file(s) in total of ", deteted_size/1024/1024, " MiB was removed during this run.")
}