unen_app 0.0.3

Application crate for UnnamedEngine
Documentation 
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use std::sync::{atomic::AtomicBool, Arc};

use crate::{
    command::CommandRegistry,
    runner::{MininalRunner, Runner, RunnerData},
    stage::{Stage, StageContainer},
    system::System,
};

pub fn create_app() -> App {
    App::default()
}

#[derive(Debug, Default)]
pub struct AppState;

pub struct App {
    state: AppState,
    runner: Box<dyn Runner>,
    stages: StageContainer,
    commands: CommandRegistry,
}

impl Default for App {
    fn default() -> Self {
        Self {
            runner: MininalRunner::new_boxed(),
            state: AppState,
            stages: StageContainer::default(),
            commands: CommandRegistry::default(),
        }
    }
}

impl App {
    /// Starts the application, consumes `self`.
    pub fn run(self) {
        let App {
            state,
            mut runner,
            stages,
            commands,
        } = self;

        let term = Arc::new(AtomicBool::new(false));

        let data = RunnerData {
            stages,
            state,
            term,
            commands,
        };

        runner.as_mut().run(data);

        // Prints a newline to not mix logs with ctl echo
        println!();

        tracing::info!("Successfully terminated engine.");
        tracing::info!("See you later :D");
    }

    pub fn system<S: Stage, M: System>(&mut self, stage: S, system: M) -> &mut Self {
        let system_name = system.name();
        let stage_name = stage.name();
        self.stages.get(stage).push(system);
        tracing::info!("Attached {} system to {} stage.", system_name, stage_name);
        self
    }

    pub fn stage<S: Stage>(&mut self, stage: S) -> &mut Self {
        let stage_name = stage.name();
        self.stages.insert(stage);
        tracing::info!("Inserted '{}' stage.", stage_name);
        self
    }

    pub fn runner<R: Runner>(&mut self, runner: R) -> &mut Self {
        self.runner = Box::new(runner);
        self
    }
}