actually implement config reloading using notify

src/main.rs

@@ -2,6 +2,9 @@ use std::env;
 use std::fs::File;
 use std::io::{Read, Write};
 
+use std::sync::mpsc;
+use std::time::Duration;
+
 extern crate tenquestionmarks;
 use tenquestionmarks::Tenquestionmarks;
 
@@ -14,6 +17,8 @@ extern crate env_logger;
 extern crate time;
 
 extern crate crossbeam;
+extern crate notify;
+use notify::{RecommendedWatcher, Watcher, RecursiveMode, DebouncedEvent};
 
 fn init_logger () {
     let mut builder = env_logger::Builder::new();
@@ -37,9 +42,20 @@ fn main () {
         Ok(tqm) => {
             info!("tenquestionmarks initialized successfully");
             crossbeam::scope(|scope| {
-                //scope.spawn(|| {
-                //    tqm.reconfigure(&read_config_from_file(&config_file_name));
-                //});
+                scope.spawn(|| {
+                    let (notify_sender, notify_reciever) = mpsc::channel();
+                    let mut watcher: RecommendedWatcher = Watcher::new(notify_sender, Duration::from_secs(2)).expect("Failed to create watcher");
+                    watcher.watch(&config_file_name, RecursiveMode::NonRecursive).expect("Failed to watch config file");
+
+                    loop {
+                        if let Ok(event) = notify_reciever.recv() {
+                            if let DebouncedEvent::Write(_) = event {
+                                info!("Detected modified config file, reconfiguring");
+                                tqm.reconfigure(&read_config_from_file(&config_file_name));
+                            }
+                        }
+                    }
+                });
 
                 tqm.run();
             })