extern crate time;

use super::Sensor;

pub struct TimeSensor {
    format: String,
    is_utc: bool,
    time: String
}

impl TimeSensor {
    pub fn new(format: &str, is_utc: bool) -> TimeSensor {
        TimeSensor {
            format: format.to_string(),
            is_utc: is_utc,
            time: "".to_string()
        }
    }
}

impl Sensor for TimeSensor {
    fn icon(&self) -> String {
        if self.is_utc {
            "UTC"
        }
        else {
            ""
        }.to_string()
    }

    fn status(&self) -> String {
        self.time.clone()
    }

    fn process(&mut self) {
        let now =
            if self.is_utc {
                time::now_utc()
            }
            else {
                time::now()
            };


        let time = time::strftime(&self.format, &now);
        self.time = time.unwrap()
    }
}