chore: add some comments in code

Moved `PluginsManager` and `PluginsManagerType` from `servers::plugin::manager` to the `servers::plugin` module.
Added some comments in code.
Implemented function `into()` to the `PluginsManager` struct.

src/commands/mod.rs

@@ -1,3 +1,11 @@
+//! Default servers commands.
+//!
+//! List of commands:
+//! - /broadcast
+//! - /disconnect
+//! - /help
+//! - /id
+
 mod broadcast;
 mod disconnect;
 mod help;

src/plugins/load.rs

@@ -1,4 +1,4 @@
-use std::{fs, path::Path, sync::Arc};
+use std::{fs, path::Path};
 
 use async_std::task;
 use libloading::{Library, Symbol};
@@ -12,6 +12,7 @@ use crate::{
     },
 };
 
+/// Load all plugins, commands and events.
 pub fn loader(plugins_dir: &str) -> anyhow::Result<PluginsManagerType> {
     // if plugins directory doesn't exists, create it
     if !Path::new(plugins_dir).exists() {
@@ -24,7 +25,7 @@ pub fn loader(plugins_dir: &str) -> anyhow::Result<PluginsManagerType> {
     // init a plugins manager
     let mut plugins_manager = PluginsManager::new();
 
-    // add default commands
+    // register default commands
     plugins_manager.commands = commands::register_commands();
 
     for plugin_path in plugins_files {
@@ -59,5 +60,5 @@ pub fn loader(plugins_dir: &str) -> anyhow::Result<PluginsManagerType> {
         info!("Loaded plugin {}.", plugin.name());
     }
 
-    Ok(Arc::new(plugins_manager))
+    Ok(plugins_manager.into())
 }

src/plugins/manager.rs

@@ -3,6 +3,10 @@ use std::sync::Arc;
 
 use crate::plugins::prelude::*;
 
+/// Plugins manager struct with Clone derive added by Arc.
+pub type PluginsManagerType = Arc<PluginsManager>;
+
+/// A plugins manager that stores all plugins, commands and events.
 #[derive(Default)]
 pub struct PluginsManager {
     /// Vector with all loaded plugins.
@@ -14,14 +18,19 @@ pub struct PluginsManager {
 }
 
 impl PluginsManager {
-    /// Returns an empty PluginsManager
-    pub fn new() -> PluginsManager {
+    /// Returns an empty instance of [PluginsManager]
+    pub fn new() -> Self {
         Self {
             plugins: Vec::new(),
             commands: Vec::new(),
             events: Vec::new(),
         }
     }
+
+    /// Returns the instance in [PluginsManagerType].
+    pub fn into(self) -> PluginsManagerType {
+        Arc::new(self)
+    }
 }
 
 impl fmt::Debug for PluginsManager {
@@ -33,5 +42,3 @@ impl fmt::Debug for PluginsManager {
             .finish()
     }
 }
-
-pub type PluginsManagerType = Arc<PluginsManager>;

src/plugins/mod.rs

@@ -1,9 +1,13 @@
+//! Plugin infrastructure.
+
 mod load;
-pub mod manager;
+mod manager;
 pub mod types;
 
 pub use load::*;
+pub use manager::*;
 
+/// Crates and types required in plugins.
 pub mod prelude {
     use super::*;
 

src/plugins/types.rs

@@ -1,10 +1,12 @@
+//! Types used for creating plugins.
+
 use std::any::Any;
 
 use async_trait::async_trait;
 
 use crate::{plugins::manager::PluginsManager, server::Client};
 
-// A main plugin trait.
+/// A main plugin trait.
 #[async_trait]
 pub trait Plugin: Any + Send + Sync {
     /// Name of the plugin.
@@ -57,6 +59,7 @@ pub trait Event: Any + Send + Sync {
     async fn execute(&self, client: &Client, data: EventData) -> anyhow::Result<()>;
 }
 
+/// A plugin registrar trait.
 pub trait Registrar {
     /// Function to register plugins.
     fn register_plugins(&mut self, plugin: Box<dyn Plugin>);

src/server/client.rs

@@ -10,8 +10,8 @@ use tungstenite::{accept, Message, WebSocket};
 
 use super::run::PLUGINS_MANAGER;
 use crate::plugins::{
-    manager::PluginsManagerType,
     prelude::{EventData, EventType},
+    PluginsManagerType,
 };
 
 /// Max length of a TCP and UDP packet

src/server/mod.rs

@@ -1,3 +1,5 @@
+//! Server infrastructure.
+
 mod client;
 mod run;
 

src/server/run.rs

@@ -8,13 +8,14 @@ use tracing::{error, info, span, Level};
 use crate::{
     plugins::{
         self,
-        manager::PluginsManagerType,
         prelude::{EventData, EventType},
+        PluginsManagerType,
     },
     server::Client,
     CLIENTS, CLIENT_NEXT,
 };
 
+/// Plugins directory.
 pub const PLUGINS_DIR: &str = "plugins";
 
 lazy_static! {