Add the option to treat minutes and hours flags as discounting from an 8 hr day

src/args.rs

@@ -11,4 +11,8 @@ pub struct Args {
     /// How many minutes you intend to work (sums with `hours`)
     #[arg(long, default_value_t = 0)]
     pub minutes: i64,
+
+    /// If true, the the hours and minutes fields are treated as subtracting from 8 hours
+    #[arg(long, default_value_t = false)]
+    pub discount: bool,
 }

src/main.rs

@@ -42,7 +42,11 @@ fn main() -> Result<()> {
         total_minutes += (now - remaining).num_minutes();
     }
 
-    let target_minutes = args.hours * 60 + args.minutes;
+    let target_minutes = if args.discount {
+        (8 * 60) - (args.hours * 60 + args.minutes)
+    } else {
+         args.hours * 60 + args.minutes
+    };
     println!("{}", time::get_charaterized_time_remaining(total_minutes, target_minutes));
     Ok(())
 }