package session

import (
	"errors"
	uuid "github.com/satori/go.uuid"
	"sync"
)

//定义对象

type MemorySessionMgr struct {
	sessionMap map[string]Session
	rwLock     sync.RWMutex
}

//构造函数

func NewMemorySessionMgr() *MemorySessionMgr {
	sr := &MemorySessionMgr{
		sessionMap: make(map[string]Session, 1024),
	}
	return sr
}

func (s *MemorySessionMgr) Init(addr string, options ...string) (err error) {
	return
}

//mgr创建一个session

func (s *MemorySessionMgr) CreateSession() (session Session, err error) {
	s.rwLock.Lock()
	defer s.rwLock.Unlock()
	//用uuid作为session id
	sessionId := uuid.NewV4().String()
	//创建一个session
	memorySession := NewMemorySession(sessionId)
	s.sessionMap[sessionId] = memorySession
	return
}

func (s *MemorySessionMgr) GetSession(sessionId string) (session Session, err error) {
	s.rwLock.Lock()
	defer s.rwLock.Unlock()
	session, ok := s.sessionMap[sessionId]
	if !ok {
		err = errors.New("session not found")
		return
	}
	return
}