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path: root/server/src/main.rs
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mod db;
mod errors;
mod logger;
mod models;
mod routes;

use axum::{
    http::{header, Method, Request},
    Router,
};
use std::time::Duration;
use tower_http::{
    classify::ServerErrorsFailureClass,
    cors::{Any, CorsLayer},
    sensitive_headers::SetSensitiveHeadersLayer,
    trace::TraceLayer,
};
use tracing::Span;

/// Main application, called by the execution of the software
#[tokio::main]
async fn main() {
    let app = create_app().await;

    // By default the server is bind at "127.0.0.1:3000"
    let addr = std::env::var("ALLOWED_HOST").unwrap_or_else(|_| "127.0.0.1:3000".to_string());
    tracing::info!("Listening on {}", addr);

    axum::Server::bind(&addr.parse().unwrap())
        .serve(app.into_make_service())
        .await
        .unwrap();
}

/// Create the app: setup everything and returns a `Router`
async fn create_app() -> Router {
    logger::setup();
    let _ = db::setup().await;

    let api_routes = Router::new()
        .nest("/users", routes::user::create_route())
        .nest("/auth", routes::auth::create_route());

    Router::new()
        // Map all routes to `/v1/*` namespace
        .nest("/v1", api_routes)
        // Mark the `Authorization` request header as sensitive so it doesn't
        // show in logs.
        .layer(SetSensitiveHeadersLayer::new(std::iter::once(
            header::AUTHORIZATION,
        )))
        // Use a layer for `TraceLayer`
        .layer(
            TraceLayer::new_for_http()
                .on_request(|request: &Request<_>, _span: &Span| {
                    tracing::info!("{} {}", request.method(), request.uri());
                })
                .on_failure(
                    |error: ServerErrorsFailureClass, latency: Duration, _span: &Span| {
                        tracing::error!("{} | {} s", error, latency.as_secs());
                    },
                ),
        )
        .layer(
            CorsLayer::new()
                .allow_methods([
                    Method::OPTIONS,
                    Method::GET,
                    Method::POST,
                    Method::PUT,
                    Method::DELETE,
                ])
                .allow_headers(vec![header::CONTENT_TYPE, header::AUTHORIZATION])
                .allow_origin(Any),
        )
}