Initial commit

3 files changed, 177 insertions, 0 deletions

diff --git a/src/ext/framework/command.rs b/src/ext/framework/command.rs
new file mode 100644
index 0000000..31b2520
--- /dev/null
+++ b/src/ext/framework/command.rs
@@ -0,0 +1,7 @@
+use std::sync::Arc;
+use ::client::Context;
+use ::model::Message;
+
+pub type Command = Fn(Context, Message) + Send + Sync;
+#[doc(hidden)]
+pub type InternalCommand = Arc<Command>;
diff --git a/src/ext/framework/configuration.rs b/src/ext/framework/configuration.rs
new file mode 100644
index 0000000..cd68c69
--- /dev/null
+++ b/src/ext/framework/configuration.rs
@@ -0,0 +1,48 @@
+use std::default::Default;
+use ::client::http;
+
+pub struct Configuration {
+    pub depth: usize,
+    pub on_mention: Option<Vec<String>>,
+    pub prefix: Option<String>,
+}
+
+impl Configuration {
+    /// The default depth of the message to check for commands. Defaults to 5.
+    pub fn depth(mut self, depth: u8) -> Self {
+        self.depth = depth as usize;
+
+        self
+    }
+
+    pub fn on_mention(mut self, on_mention: bool) -> Self {
+        if !on_mention {
+            return self;
+        }
+
+        if let Ok(current_user) = http::get_current_user() {
+            self.on_mention = Some(vec![
+                format!("<@{}>", current_user.id), // Regular mention
+                format!("<@!{}>", current_user.id), // Nickname mention
+            ]);
+        }
+
+        self
+    }
+
+    pub fn prefix<S: Into<String>>(mut self, prefix: S) -> Self {
+        self.prefix = Some(prefix.into());
+
+        self
+    }
+}
+
+impl Default for Configuration {
+    fn default() -> Configuration {
+        Configuration {
+            depth: 5,
+            on_mention: None,
+            prefix: None,
+        }
+    }
+}
diff --git a/src/ext/framework/mod.rs b/src/ext/framework/mod.rs
new file mode 100644
index 0000000..3021d5b
--- /dev/null
+++ b/src/ext/framework/mod.rs
@@ -0,0 +1,122 @@
+mod command;
+mod configuration;
+
+pub use self::command::Command;
+pub use self::configuration::Configuration;
+
+use self::command::InternalCommand;
+use std::collections::HashMap;
+use std::sync::Arc;
+use std::thread;
+use ::client::Context;
+use ::model::Message;
+
+#[allow(type_complexity)]
+#[derive(Default)]
+pub struct Framework {
+    configuration: Configuration,
+    commands: HashMap<String, InternalCommand>,
+    checks: HashMap<String, Arc<Fn(&Context, &Message) -> bool + Send + Sync + 'static>>,
+    pub initialized: bool,
+}
+
+impl Framework {
+    pub fn configure<F>(mut self, f: F) -> Self
+        where F: FnOnce(Configuration) -> Configuration {
+        self.configuration = f(self.configuration);
+        self.initialized = true;
+
+        self
+    }
+
+    #[doc(hidden)]
+    pub fn dispatch(&mut self, context: Context, message: Message) {
+        // Determine the point at which the prefix ends, and the command starts.
+        let pos = if let Some(ref prefix) = self.configuration.prefix {
+            let mut mention_ends = None;
+
+            if let Some(ref mentions) = self.configuration.on_mention {
+                for mention in mentions {
+                    if !message.content.starts_with(&mention[..]) {
+                        continue;
+                    }
+
+                    mention_ends = Some(mention.len() + 1);
+
+                    break;
+                }
+            }
+
+            if let Some(mention_ends) = mention_ends {
+                mention_ends
+            } else if !message.content.starts_with(prefix) {
+                return;
+            } else {
+                prefix.len()
+            }
+        } else {
+            0
+        };
+
+        // Ensure that the message length is at least longer than the prefix
+        // length. There's no point in checking further ahead if there's nothing
+        // to check.
+        if message.content.len() <= pos {
+            return;
+        }
+
+        let mut built = String::new();
+
+        for i in 0..self.configuration.depth {
+            if i > 0 {
+                built.push(' ');
+            }
+
+            built.push_str(match {
+                message.content
+                    .split_at(pos)
+                    .1
+                    .split_whitespace()
+                    .collect::<Vec<&str>>()
+                    .get(i)
+            } {
+                Some(piece) => piece,
+                None => return,
+            });
+
+            if let Some(command) = self.commands.get(&built) {
+                if let Some(check) = self.checks.get(&built) {
+                    if !(check)(&context, &message) {
+                        return;
+                    }
+                }
+
+                let command = command.clone();
+
+                thread::spawn(move || {
+                    (command)(context, message)
+                });
+
+                return;
+            }
+        }
+    }
+
+    pub fn on<F, S>(mut self, command_name: S, f: F) -> Self
+        where F: Fn(Context, Message) + Send + Sync + 'static,
+              S: Into<String> {
+        self.commands.insert(command_name.into(), Arc::new(f));
+        self.initialized = true;
+
+        self
+    }
+
+    pub fn set_check<F, S>(mut self, command: S, check: F) -> Self
+        where F: Fn(&Context, &Message) -> bool + Send + Sync + 'static,
+              S: Into<String> {
+        self.checks.insert(command.into(), Arc::new(check));
+        self.initialized = true;
+
+        self
+    }
+}