monorepo/bike-lights/core/src/lib.rs

use std::time::Duration;

mod patterns;
pub use patterns::*;

mod types;
pub use types::{DashboardPattern, Pattern, RGB};

pub trait UI {
    fn check_event(&self) -> Option<Event>;
    fn update_lights(&self, dashboard_lights: DashboardPattern, lights: Pattern);
}

pub trait Animation {
    fn tick(&self, time: std::time::Instant) -> (DashboardPattern, Pattern);
}

pub struct DefaultAnimation {}

impl Animation for DefaultAnimation {
    fn tick(&self, time: std::time::Instant) -> (DashboardPattern, Pattern) {
        (PRIDE_DASHBOARD, PRIDE)
    }
}

#[derive(Clone, Debug)]
pub enum Event {
    Brake,
    BrakeRelease,
    LeftBlinker,
    NextPattern,
    PreviousPattern,
    RightBlinker,
}

#[derive(Clone)]
pub enum State {
    Pattern(u8),
    Brake,
    LeftBlinker,
    RightBlinker,
    BrakeLeftBlinker,
    BrakeRightBlinker,
}

pub struct App {
    ui: Box<dyn UI>,
    state: State,
    current_animation: Box<dyn Animation>,
    dashboard_lights: DashboardPattern,
    lights: Pattern,
}

impl App {
    pub fn new(ui: Box<dyn UI>) -> Self {
        Self {
            ui,
            state: State::Pattern(0),
            current_animation: Box::new(DefaultAnimation {}),
            dashboard_lights: OFF_DASHBOARD,
            lights: OFF,
        }
    }

    pub fn tick(&mut self, time: std::time::Instant) {
        match self.ui.check_event() {
            Some(event) => println!("event received: {:?}", event),
            None => (),
        };
        let (dashboard, lights) = self.current_animation.tick(time);
        self.dashboard_lights = dashboard.clone();
        self.lights = lights.clone();
        self.ui.update_lights(dashboard, lights);
    }
}