# Session handlers
#
# Here a simple example on how to use sessions with popcorn:
# ~~~
# import popcorn
#
# redef class Session
#	var is_logged = false
# end
#
# class AppLogin
#	super Handler
#
#	redef fun get(req, res) do
#		res.html """
#		<p>Is logged: {{{req.session.as(not null).is_logged}}}</p>
#		<form action="/" method="POST">
#			<input type="submit" value="Login" />
#		</form>"""
#	end
#
#	redef fun post(req, res) do
#		req.session.as(not null).is_logged = true
#		res.redirect("/")
#	end
# end
#
# var app = new App
# app.use_before("/*", new SessionInit)
# app.use("/", new AppLogin)
# app.listen("localhost", 3000)
# ~~~
#
# Notice the use of the `SessionInit` on the `/*` route. You must use the
# `SessionInit` first to initialize the request session.
# Without that, your request session will be set to `null`.
module pop_sessions

import pop_handlers

# Initialize session in request if non existent.
#
# Should be called before any use of the session.
# ~~~
# import popcorn
#
# var app = new App
# app.use_before("/*", new SessionInit)
# # ... other middlewares
# app.listen("localhost", 3000)
# ~~~
class SessionInit
	super Handler

	redef fun all(req, res) do if req.session == null then req.session = new Session
end