1 files changed, 38 insertions, 0 deletions
diff --git a/src/utils/battery.rs b/src/utils/battery.rs
new file mode 100644
index 0000000..b831773
--- /dev/null
+++ b/src/utils/battery.rs
@@ -0,0 +1,38 @@
+use crate::types::Config;
+use std::fs::File;
+use std::io::Error;
+use std::io::Read;
+
+// getting battery percentage
+pub fn get_battery(config: &Config) -> Result<String, Error> {
+    let battery_full_cap_file = format!(
+        "/sys/class/power_supply/{}/charge_full_design",
+        config.battery.source
+    );
+    let battery_charge_now_file = format!(
+        "/sys/class/power_supply/{}/charge_now",
+        config.battery.source
+    );
+
+    let mut buf = String::new();
+
+    // FIXME: ugly error handling AGAIN fixing later, im lazy
+    match File::open(&battery_full_cap_file) {
+        Ok(mut file) => file.read_to_string(&mut buf)?,
+        Err(_) => return Ok(String::from("check your battery source name")),
+    };
+    let full_design = buf.trim().parse::<u32>().unwrap();
+    buf.clear();
+
+    // NOTE: no need to error check if passed the above match
+    File::open(&battery_charge_now_file)?.read_to_string(&mut buf)?;
+
+    let charge_now = buf.trim().parse::<u32>().unwrap();
+
+    let battery_percentage = (charge_now as f32 / full_design as f32) * 100.0;
+    let result = format!(
+        "  {}  {:.0}%  {}",
+        config.battery.icon, battery_percentage, config.seperator
+    );
+    Ok(result)
+}