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use ansi_term::Color;
use super::{Context, Module};
/// Creates a module for the battery percentage and charging state
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
const BATTERY_FULL: &str = "•";
const BATTERY_CHARGING: &str = "⇡";
const BATTERY_DISCHARGING: &str = "⇣";
const BATTERY_THRESHOLD: f32 = 10.0;
// TODO: Update when v1.0 printing refactor is implemented to only
// print escapes in a prompt context.
let shell = std::env::var("STARSHIP_SHELL").unwrap_or_default();
let percentage_char = match shell.as_str() {
"zsh" => "%%", // % is an escape in zsh, see PROMPT in `man zshmisc`
_ => "%",
};
let battery_status = get_battery_status()?;
let BatteryStatus { state, percentage } = battery_status;
if percentage > BATTERY_THRESHOLD {
log::debug!(
"Battery percentage is higher than threshold ({} > {})",
percentage,
BATTERY_THRESHOLD
);
return None;
}
// TODO: Set style based on percentage when threshold is modifiable
let mut module = context.new_module("battery");
let module_style = module
.config_value_style("style")
.unwrap_or_else(|| Color::Red.bold());
module.set_style(module_style);
module.get_prefix().set_value("");
match state {
battery::State::Full => {
module.new_segment("full_symbol", BATTERY_FULL);
}
battery::State::Charging => {
module.new_segment("charging_symbol", BATTERY_CHARGING);
}
battery::State::Discharging => {
module.new_segment("discharging_symbol", BATTERY_DISCHARGING);
}
_ => return None,
}
let mut percent_string = Vec::<String>::with_capacity(2);
// Round the percentage to a whole number
percent_string.push(percentage.round().to_string());
percent_string.push(percentage_char.to_string());
module.new_segment("percentage", percent_string.join("").as_ref());
Some(module)
}
fn get_battery_status() -> Option<BatteryStatus> {
let battery_manager = battery::Manager::new().ok()?;
match battery_manager.batteries().ok()?.next() {
Some(Ok(battery)) => {
log::debug!("Battery found: {:?}", battery);
let battery_status = BatteryStatus {
percentage: battery.state_of_charge().value * 100.0,
state: battery.state(),
};
Some(battery_status)
}
Some(Err(e)) => {
log::debug!("Unable to access battery information:\n{}", &e);
None
}
None => {
log::debug!("No batteries found");
None
}
}
}
struct BatteryStatus {
percentage: f32,
state: battery::State,
}
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