use std::env;
use std::sync::Arc;
use axum::Router;
use tokio::net::TcpListener;
use crate::{api, AppState};
use crate::error::SirenResult;

pub struct App {
  app_state: AppState,
}

impl App {
  pub fn new(app_state: AppState) -> Self {
    Self { app_state }
  }

  pub async fn serve(self) -> SirenResult<()> {
    let app = Router::new()
      .nest("/api", api::get_routes())
      .with_state(Arc::new(self.app_state));

    let api_port: String = env::var("API_PORT").expect("Expected a port in the environment");
    let addr = format!("0.0.0.0:{}", api_port);

    let listener = TcpListener::bind(&addr).await?;
    log::info!("API is listening on {}", &addr);
    Ok(axum::serve(listener, app).await?)
  }
}