;;;; endpoints.lisp -- http endpoints for dnd

(in-package :dnd)

(lzb:provision-app ()
  :title "Dungeons & Deadlines"
  :version "0.1.0"
  :content-type "text/html")

(defparameter +session-cookie-name+ "dnd-session")

(defun redirect-to (location)
  (setf (lzb:response-header :location) location
	(lzb:response-code) "303"))

(defun current-session ()
  "Get the session associated with the current request. Will throw an
error if lazybones:*request* is not currently bound. It will return
NIL if there is no session for the current request.

I.e. It should be called within the scope of a request handler."
  (session-with-id (lzb:request-cookie +session-cookie-name+ )))

(defmacro with-hero-session ((hero &key session (redirect "/tavern-door")) &body body)
  (let ((session (or session (gensym "SESSION"))))
    `(a:if-let (,session (current-session))
       (let ((,hero (session-hero ,session)))
         ,@body)
       (redirect-to ,redirect))))

(defendpoint* :get "/godess-shrine" () ()
  (godess-shrine))

(defendpoint* :post "/godess-shrine" () ()
  (with-plist ((name :name)) (lzb:request-body)
    (birth-from-the-goddess-loins name)
    (redirect-to "/tavern-door")))

(defendpoint* :get "/tavern-door" () ()
  (doorkeeper))

(defendpoint* :post "/tavern-door" () ()
  (with-plist ((name :name)) (lzb:request-body)
    (a:if-let ((hero (hero-known-as name)))
      (a:when-let ((sesh (new-sesh hero)))
	(lzb:set-response-cookie +session-cookie-name+ (session-id sesh)
				 :path "/" :domain "localhost")
	(redirect-to "/tavern"))
      (redirect-to "/tavern-door"))))

(defendpoint* :get "/tavern" () ()
  (with-hero-session (hero)
    (tavern hero)))