core/emgauwa-core/src/main.rs

use actix_cors::Cors;
use std::net::TcpListener;
use std::str::FromStr;

use actix_web::middleware::TrailingSlash;
use actix_web::{middleware, web, App, HttpServer};
use emgauwa_lib::handlers;
use emgauwa_lib::utils::drop_privileges;
use log::{trace, LevelFilter};
use simple_logger::SimpleLogger;

mod settings;

#[actix_web::main]
async fn main() -> std::io::Result<()> {
	let settings = settings::init();

	let log_level: LevelFilter =
		LevelFilter::from_str(&settings.logging.level).expect("Error parsing log level.");
	trace!("Log level set to {:?}", log_level);

	SimpleLogger::new()
		.with_level(log_level)
		.init()
		.expect("Error initializing logger.");

	let listener = TcpListener::bind(format!("{}:{}", settings.host, settings.port))
		.expect("Error creating listener");

	if !settings.user.is_empty() && !settings.group.is_empty() {
		log::info!(
			"Dropping privileges to {}:{}",
			settings.user,
			settings.group
		);
		drop_privileges(&settings.user, &settings.group).expect("Error dropping privileges");
	}

	let pool = emgauwa_lib::db::init(&settings.database).await;

	log::info!("Starting server on {}:{}", settings.host, settings.port);
	HttpServer::new(move || {
		let cors = Cors::default()
			.allow_any_method()
			.allow_any_header()
			.max_age(3600);

		let origins = settings.origins.clone();
		let cors = match settings.origins.is_empty() {
			true => cors.allow_any_origin(),
			false => cors.allowed_origin_fn(move |origin, _req_head| {
				origins.contains(&origin.to_str().unwrap_or_default().to_string())
			}),
		};

		App::new()
			.wrap(cors)
			.wrap(middleware::Logger::default())
			.wrap(middleware::NormalizePath::new(TrailingSlash::Trim))
			.app_data(web::JsonConfig::default().error_handler(handlers::json_error_handler))
			.app_data(web::Data::new(pool.clone()))
			.service(handlers::v1::relays::index)
			.service(handlers::v1::schedules::index)
			.service(handlers::v1::schedules::tagged)
			.service(handlers::v1::schedules::show)
			.service(handlers::v1::schedules::add)
			.service(handlers::v1::schedules::add_list)
			.service(handlers::v1::schedules::update)
			.service(handlers::v1::schedules::delete)
			.service(handlers::v1::ws::controllers::index)
	})
	.listen(listener)?
	.run()
	.await
}