add handling of different time amounts + add default sound alert

src/main.rs

@@ -1,5 +1,6 @@
 use std::{
     env::{self, args},
+    path::Path,
     process::Command,
     thread::sleep,
     time::Duration,
@@ -7,16 +8,30 @@ use std::{
 
 fn main() {
     let args: Vec<String> = args().collect();
-    let timeout_secs: u64 = args.get(1)
+    let timeout: u64 = args.get(1)
-        .expect("There should be 1 argument, which specifies amount of time (in seconds) for timer to work!")
+        .expect("There should be at least 1 argument, which specifies amount of time (in seconds) for timer to work!")
         .parse()
         .expect("The first argument should be a non-negative number");
-    let home = env::var("HOME").unwrap();
+    let measurement: char = args
+        .get(2)
+        .map_or('s', |arg| arg.chars().next().unwrap_or('s'));
+    let sleeping_amount: Duration = match measurement {
+        's' => Duration::from_secs(timeout),
+        'm' => Duration::from_mins(timeout),
+        _ => panic!("Invalid measurement of time! For now, only 's' and 'm' are supported"),
+    };
+    let alert_path = args.get(3).map_or("assets/not_sussy_song.opus", |path| {
+        assert!(
+            Path::new(path).exists(),
+            "The path provided should point to an existing file"
+        );
+        path
+    });
 
-    sleep(Duration::from_secs(timeout_secs));
+    sleep(sleeping_amount);
 
     let mut sound_alert = Command::new("pw-play")
-        .arg(format!("{home}/Music/not_sussy_song.opus"))
+        .arg(alert_path)
         .spawn()
         .expect("pw-play utility should be installed");