(load "~/quicklisp/setup.lisp")
(ql:quickload '(:clack :websocket-driver :cl-bcrypt :datafly
		       :sxql :alexandria :com.inuoe.jzon))

(defvar *connections* (make-hash-table))

(defun handle-new-connection (con)
  (let* ((user (make-hash-table))
	(json (make-hash-table)))
    (setf (gethash "uid" user) (random 100000))
    (setf (gethash "x" user) 0.0)
    (setf (gethash "y" user) 0.0)
    (setf (gethash "cmd" json) "login")
    (setf (gethash "user" json) user)
    (setf (gethash "users" json) *connections*)
    (websocket-driver:send con (com.inuoe.jzon:stringify json))
    (setf (gethash con *connections*) user)))

(defun broadcast-to-room (connection message)
    (loop :for con :being :the :hash-key :of *connections* :do
          (websocket-driver:send con message)))

(defun handle-close-connection (connection)
  (let ((message (format nil "{\"cmd\":\"logout\", \"uid\":\"~a\"}"
                         (gethash connection *connections*))))
    (remhash connection *connections*)
    (loop :for con :being :the :hash-key :of *connections* :do
          (websocket-driver:send con message))))

(defun chat-server (env)
  (let ((ws (websocket-driver:make-server env)))
    (websocket-driver:on :open ws
                         (lambda () (handle-new-connection ws)))

    (websocket-driver:on :message ws
                         (lambda (msg)
                           (broadcast-to-room ws msg)))

    (websocket-driver:on :close ws
                         (lambda (&key code reason)
                           (declare (ignore code reason))
                           (handle-close-connection ws)))
    (lambda (responder)
      (declare (ignore responder))
      (websocket-driver:start-connection ws))))

(defvar *server* (clack:clackup #'chat-server :port 12345))