package main

import (
	"fmt"
	"io/ioutil"
	"os"
	"time"

	"golang-fave/utils"

	"github.com/vladimirok5959/golang-server-sessions/session"
)

func session_clean_do(www_dir string, stop chan bool) {
	files, err := ioutil.ReadDir(www_dir)
	if err == nil {
		for _, file := range files {
			select {
			case <-stop:
				break
			default:
				tmpdir := www_dir + string(os.PathSeparator) + file.Name() + string(os.PathSeparator) + "tmp"
				if utils.IsDirExists(tmpdir) {
					session.Clean(tmpdir)
				}
			}
		}
	}
}

func session_clean_start(www_dir string) (chan bool, chan bool) {
	ch := make(chan bool)
	stop := make(chan bool)

	// Cleanup at start
	session_clean_do(www_dir, stop)

	go func() {
		for {
			select {
			case <-time.After(1 * time.Hour):
				// Cleanup every one hour
				session_clean_do(www_dir, stop)
			case <-ch:
				ch <- true
				return
			}
		}
	}()
	return ch, stop
}

func session_clean_stop(ch, stop chan bool) {
	for {
		select {
		case stop <- true:
		case ch <- true:
			<-ch
			return
		case <-time.After(8 * time.Second):
			fmt.Println("Session cleaner error: force exit by timeout after 8 seconds")
			return
		}
	}
}