Make rest::edit_profile set new token

If a user account changes their profile settings, they'll receive a new
token; update the locally stored token for REST requests with this
token.

Additionally, the `Context::edit_profile` does not need mutability over
self.

Fixes #25.

2 files changed, 22 insertions, 4 deletions

diff --git a/src/client/context.rs b/src/client/context.rs
index bc983bf..6968233 100644
--- a/src/client/context.rs
+++ b/src/client/context.rs
@@ -828,7 +828,7 @@ impl Context {
         rest::edit_nickname(guild_id.into().0, new_nickname)
     }
 
-    /// Edits the current user's settings.
+    /// Edits the current user's profile settings.
     ///
     /// Refer to `EditProfile`'s documentation for its methods.
     ///
@@ -840,7 +840,7 @@ impl Context {
     /// context.edit_member(|p|
     ///     p.username("meew zero"));
     /// ```
-    pub fn edit_profile<F: FnOnce(EditProfile) -> EditProfile>(&mut self, f: F)
+    pub fn edit_profile<F: FnOnce(EditProfile) -> EditProfile>(&self, f: F)
         -> Result<CurrentUser> {
         let user = try!(rest::get_current_user());
 
diff --git a/src/client/rest/mod.rs b/src/client/rest/mod.rs
index a325f15..d5e5761 100644
--- a/src/client/rest/mod.rs
+++ b/src/client/rest/mod.rs
@@ -690,12 +690,30 @@ pub fn edit_note(user_id: u64, map: Value) -> Result<()> {
                          user_id))
 }
 
-/// Edits profile we're connected to.
+/// Edits the current user's profile settings.
+///
+/// For bot users, the password is optional.
+///
+/// # User Accounts
+///
+/// If a new token is received due to a password change, then the stored token
+/// internally will be updated.
+///
+/// **Note**: this token change may cause requests made between the actual token
+/// change and when the token is internally changed to be invalid requests, as
+/// the token may be outdated.
+///
 pub fn edit_profile(map: Value) -> Result<CurrentUser> {
     let body = try!(serde_json::to_string(&map));
     let response = request!(Route::UsersMe, patch(body), "/users/@me");
 
-    CurrentUser::decode(try!(serde_json::from_reader(response)))
+    let mut map: BTreeMap<String, Value> = try!(serde_json::from_reader(response));
+
+    if let Some(Value::String(token)) = map.remove("token") {
+        set_token(&token)
+    }
+
+    CurrentUser::decode(Value::Object(map))
 }
 
 /// Changes a role in a guild.