Abstract updating user informations.

dudeswave/src/dudeswave_auth.erl

@@ -26,7 +26,8 @@ from the dudeswave database.
 
 -export([authenticate/2, details/1, new/3,
     update/4, delete/1, logout/2, auth_cookies/1, invalidate_cookies/1,
-    set_auth_cookies/4, read_login_data/1, read_new_user_data/1]).
+    set_auth_cookies/4, read_login_data/1, read_new_user_data/1,
+    read_update_user_data/1]).
 
 -doc """
 Verify a session with an existing cookie.
@@ -375,3 +376,31 @@ read_new_user_data(Req) ->
 	    <<"email">> := Email}  = json:decode(Data),
 
 	{User, Pass, Email, Req0}.
+
+-doc """
+Update user informations.
+
+Spec:
+
+```
+-spec read_update_user_data(Req) -> {Email, Desc, Name, Req0} when
+	Req :: cowboy_req:req(),
+	Email :: binary(),
+	Desc :: binary(),
+	Name :: binary(),
+	Req0 :: cowboy_req:req().
+```
+""".
+-spec read_update_user_data(Req) -> {Email, Desc, Name, Req0} when
+	Req :: cowboy_req:req(),
+	Email :: binary(),
+	Desc :: binary(),
+	Name :: binary(),
+	Req0 :: cowboy_req:req().
+
+read_update_user_data(Req) ->
+	{ok, Data, Req0} = cowboy_req:read_body(Req),
+	#{<<"email">> := Email, <<"description">> := Desc,
+	    <<"name">> := Name} = json:decode(Data),
+
+	{Email, Desc, Name, Req0}.

dudeswave/src/dudeswave_user_handler.erl

@@ -225,10 +225,7 @@ create_user(Req, State) ->
 
 modify_user(Req, State) ->
 	{User, _} = dudeswave_auth:auth_cookies(Req),
-
+	{Email, Desc, Name, Req0} = dudeswave_auth:read_update_user_data(Req),
-	{ok, Data, Req0} = cowboy_req:read_body(Req),
-	#{<<"email">> := Email, <<"description">> := Desc,
-	    <<"name">> := Name} = json:decode(Data),
 
 	case dudeswave_auth:update(User, Name, Email, Desc) of
 		ok -> {true, Req0, []};