use instant::Instant;
use std::time::Duration;

use crate::constants::*;

pub enum FlashingMessageIntent {
    Start,
    Quit,
    Save,
    Restore,
    Restart,
}

pub struct FlashingMessage {
    pub message: String,
    pub color: usize,
    pub last_changed_color: Instant,
    pub intent: Option<FlashingMessageIntent>,
}

impl FlashingMessage {
    pub fn new(message: &str, intent: Option<FlashingMessageIntent>) -> Self {
        Self {
            message: message.to_string(),
            color: 14,
            last_changed_color: Instant::now(),
            intent,
        }
    }

    pub fn next_color(&mut self) {
        let now = Instant::now();
        if now - self.last_changed_color > Duration::from_secs_f32(FLASHING_PERIOD) {
            self.color += 1;
            if self.color > 15 {
                self.color = 13
            }
            self.last_changed_color = now;
        }
    }
}

impl From<&str> for FlashingMessage {
    fn from(message: &str) -> Self {
        Self::new(message, None)
    }
}