package session

import "sync/atomic"

type IDMgr struct {
	count int64
	sid   int64
}

func NewSessionIDMgr() *IDMgr {
	return &IDMgr{}
}

// Increment the connection count
func (c *IDMgr) Increment() {
	atomic.AddInt64(&c.count, 1)
}

// Decrement the connection count
func (c *IDMgr) Decrement() {
	atomic.AddInt64(&c.count, -1)
}

// Count returns the connection numbers in current
func (c *IDMgr) Count() int64 {
	return atomic.LoadInt64(&c.count)
}

// Reset the connection service status
func (c *IDMgr) Reset() {
	atomic.StoreInt64(&c.count, 0)
	atomic.StoreInt64(&c.sid, 0)
}

// SessionID returns the session id
func (c *IDMgr) SessionID() int64 {
	return atomic.AddInt64(&c.sid, 1)
}