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use crate::config::CONFIG;
use std::fs::File;
use std::io::Error;
use std::io::Read;
// getting battery percentage
pub fn get_battery() -> 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();
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();
// 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)
}
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