add bat notification; fix mem string

Cargo.toml

@@ -7,4 +7,5 @@ edition = "2024"
 battery = "0.7.8"
 chrono = "0.4.40"
 local-ip-address = "0.6.3"
+notify-rust = "4.11.7"
 sysinfo = "0.34.2"

src/main.rs

@@ -7,11 +7,13 @@ use sysinfo::System;
 
 fn main() -> Result<(), Box<dyn Error>> {
     let mut c = 0;
+    let mut bat_notify_sent = false;
     loop {
         c += 1;
         let sys = System::new_all();
         let free_mem = sys.available_memory() / 1073741824;
         let total_mem = sys.total_memory() / 1073741824;
+        let used_mem = total_mem - free_mem;
         let cpu = sys.global_cpu_usage();
         let ip4 = match local_ip_address::local_ip() {
             Ok(i) => i.to_string().replace("0", ""),
@@ -61,6 +63,15 @@ fn main() -> Result<(), Box<dyn Error>> {
                         )
                         .as_str(),
                     );
+                    if bat_res.state_of_charge().value * 100.0 < 20.0 && !bat_notify_sent {
+                        notify_rust::Notification::new()
+                            .summary("Battery level critical!")
+                            .body("Your battery is below 20%. Please connect you charger")
+                            .show()?;
+                        bat_notify_sent = true;
+                    } else if bat_notify_sent && bat_res.state_of_charge().value * 100.0 > 20.0 {
+                        bat_notify_sent = false;
+                    }
                     batc += 1;
                 }
             }
@@ -70,7 +81,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         let time = chrono::Local::now().format("%A, %d-%m (%b), %Y %I:%M %p");
 
         println!(
-            "{battery}NET:{ip}|{disk_str}|MEM:{free_mem}/{total_mem}GB|CPU:{:.2}%|{time}",
+            "{battery}NET:{ip}|{disk_str}|MEM:{used_mem}/{total_mem}GB|CPU:{:.2}%|{time}",
             cpu
         );