react-koa-sbase/server/common/middlewares/session.js

fullstack framework, superproject base.

// Generated by CoffeeScript 1.10.0
var EXPIRES, KEY, cache, handler, session

KEY = 's_id'

EXPIRES = 1000 * 60 * 20

cache = null

session = {
    __nowTime: function () {
        return (new Date()).getTime()
    },
    __uuid: function () {
        return this.__nowTime() + Math.random()
    },
    init: function () {
        if (!cache) {
            return cache = {}
        }
    },
    get: function (id) {
        return cache[id]
    },
    create: function (opt) {
        var expire, id, ip, s
        if (opt == null) {
            opt = {}
        }
        id = this.__uuid()
        ip = opt.ip
        expire = this.__nowTime() + EXPIRES
        s = {
            id: id,
            ip: ip,
            cookie: {
                expire: expire
            }
        }
        return cache[s.id] = s
    },
    'delete': function (id) {
        return delete cache[id]
    },
    expireUpdate: function (id) {
        if (cache[id]) {
            return cache[id].cookie.expire = this.__nowTime() + EXPIRES
        }
    }
}

handler = function (ctx, next) {
    var generate, s, sid
    session.init()
    generate = function (ctx) {
        var s
        s = session.create()
        ctx.cookies.set(KEY, s.id)
        return ctx.session = s
    }
    sid = ctx.cookies.get(KEY)
    if (sid) {
        s = session.get(sid)
        if (s) {
            if (s.cookie.expire > session.__nowTime()) {
                session.expireUpdate(sid)
                ctx.session = s
            } else {
                generate(ctx)
            }
        } else {
            generate(ctx)
        }
    } else {
        generate(ctx)
    }
    return next()
}

module.exports = handler