More config for CreateCommand, add various methods

Adds multiple configurations to the command builder, and adds methods
to various structs.

Context::get_current_user is a shortcut to retrieve the current user
from the cache.

Message::get_member retrieves the member object of the message, if sent
in a guild. Message::is_private checks if the message was sent in a
Group or PrivateChannel.

User::member retrieves the user's member object in a guild by Id;

Adds 6 configurations to the command builder:

- dm_only: whether the command can only be used in direct messages;
- guild_only: whether the command can only be used in guilds;
- help_available: whether the command should be displayed in the help
  list;
- max_args: specify the maximum number of arguments a command must be
  given;
- min_args: specify the minimum number of arguments a command must be
  given;
- required_permissions: the permissions a member must have to be able
  to use the command;

1 files changed, 10 insertions, 1 deletions

diff --git a/src/client/context.rs b/src/client/context.rs
index eb7246b..e646ec6 100644
--- a/src/client/context.rs
+++ b/src/client/context.rs
@@ -22,7 +22,7 @@ use ::internal::prelude::*;
 use ::model::*;
 use ::utils;
 
-#[cfg(feature = "cache")]
+#[cfg(feature="cache")]
 use super::CACHE;
 
 /// The context is a general utility struct provided on event dispatches, which
@@ -1077,6 +1077,15 @@ impl Context {
         Ok(channels)
     }
 
+    /// Gets information about the current user.
+    ///
+    /// Note this is shorthand for retrieving the current user through the
+    /// cache, and will perform a clone.
+    #[cfg(all(feature = "cache", feature = "methods"))]
+    pub fn get_current_user(&self) -> CurrentUser {
+        CACHE.read().unwrap().user.clone()
+    }
+
     /// Gets an [`Guild`]'s emoji by Id.
     ///
     /// Requires the [Manage Emojis] permission.