2a072db8f7e7af7d9dd164ec84040432669071e9 — Thomas Letan 1 year, 4 months ago 3d62bd8 master
feature: Add a new backend method to fetch puppet (character) info

We factorize code with the previously defined function `get-player`,
thanks to the `get-resource` function. As for the terminology,
`character` suffers the same limitation of `map`, hence we have to
rename it. On the one hand, `map` became `scene`, on the other hand
`character` becomes `puppet`.

Signed-off-by: Thomas Letan <contact@thomasletan.fr>
1 files changed, 35 insertions(+), 10 deletions(-)

M backend.lisp
M backend.lisp => backend.lisp +35 -10
@@ 17,31 17,56 @@
 (defpackage :lycan/backend
   (:nicknames :lb)
   (:use :cl :alexandria :flexi-streams)
-  (:export get-player))
+  (:export player
+           get-player
+           puppets
+
+           puppet
+           get-puppet
+           name))
 
 (cl:in-package :lycan/backend)
 
 (defclass player ()
-  ((characters :initarg :characters
+  ((puppets :initarg :puppets
                :initform nil
-               :accessor characters)))
-
-(defun get-player-url (name)
-  (concatenate 'string "http://0.0.0.0:4001/player/" name))
+               :accessor puppets)))
 
-(defun get-player (name &key then event-cb)
+(defun get-resource (id get-url unserialize then &optional event-cb)
   (if then
       (blackbird:catcher
        (blackbird:multiple-promise-bind (body status)
-           (das:http-request (get-player-url name))
+           (das:http-request (funcall get-url id))
          (if (eq status 200)
-             (funcall then (byte-array-to-player body))))
+             (funcall then (funcall unserialize body))))
        (error (e)
               (when event-cb
                 (funcall event-cb e))))
       (error "need to provide a callback to use the result")))
 
+(defun get-player (name &key then event-cb)
+  (get-resource name #'get-player-url #'byte-array-to-player then event-cb))
+
+(defun get-player-url (name)
+  (concatenate 'string "http://0.0.0.0:4001/player/" name))
+
 (defun byte-array-to-player (bytes)
   (let* ((json-str (octets-to-string bytes :external-format :utf-8))
          (json (jsown:parse json-str)))
-    (make-instance 'player :characters (jsown:val json "characters"))))
+    (make-instance 'player :puppets (jsown:val json "puppets"))))
+
+(defclass puppet ()
+  ((name :initarg :name
+         :initform (error "must supply a name to create a puppet")
+         :accessor name)))
+
+(defun get-puppet (key &key then event-cb)
+  (get-resource key #'get-puppet-url #'byte-array-to-puppet then event-cb))
+
+(defun get-puppet-url (key)
+  (concatenate 'string "http://0.0.0.0:4001/character/" key))
+
+(defun byte-array-to-puppet (bytes)
+  (let* ((json-str (octets-to-string bytes :external-format :utf-8))
+         (json (jsown:parse json-str)))
+    (make-instance 'puppet :name (jsown:val json "name"))))