package steamcache

import (
	"runtime/debug"
	"s1d3sw1ped/SteamCache2/vfs"
	"s1d3sw1ped/SteamCache2/vfs/cachestate"
	"sort"
	"time"
)

func init() {
	// Set the GC percentage to 50%. This is a good balance between performance and memory usage.
	debug.SetGCPercent(50)
}

// lruGC deletes files in LRU order until enough space is reclaimed.
func lruGC(vfss vfs.VFS, size uint) (uint, uint) {
	deletions := 0
	var reclaimed uint

	stats := vfss.StatAll()
	sort.Slice(stats, func(i, j int) bool {
		return stats[i].AccessTime().Before(stats[j].AccessTime())
	})

	for _, s := range stats {
		sz := uint(s.Size())
		err := vfss.Delete(s.Name())
		if err != nil {
			continue
		}
		reclaimed += sz
		deletions++
		if reclaimed >= size {
			break
		}
	}

	return reclaimed, uint(deletions)
}

func cachehandler(fi *vfs.FileInfo, cs cachestate.CacheState) bool {
	return time.Since(fi.AccessTime()) < time.Second*10 // Put hot files in the fast vfs if equipped
}