use actix_web::{App, HttpServer};
use dichroism::config;
use dichroism::handlers;
use dichroism::result::Result;
use diesel::prelude::SqliteConnection;
use diesel::r2d2::ConnectionManager;
use diesel::r2d2::Pool;
use listenfd::ListenFd;

#[actix_web::main]
async fn main() -> Result<()> {
    // Gather config.
    let config = config::Config::new_from_env().await?;
    let bind_addr = config.bind_addr;

    // Initialize DB connection pool.
    //let manager = ConnectionManager::<SqliteConnection>::new(config.db_url);
    let manager = ConnectionManager::<SqliteConnection>::new(&config.db_url);
    let pool = Pool::builder().build(manager)?;

    // Initialize application server.
    let mut server = HttpServer::new(move || {
        App::new()
            .data(config.clone())
            .data(pool.clone())
            .service(handlers::hello)
            .service(handlers::create_image)
            .service(handlers::get_products)
    });

    let mut listenfd = ListenFd::from_env();
    server = if let Some(l) = listenfd
        .take_tcp_listener(0)
        .expect("Unable to grab TCP listener!")
    {
        // If using listenfd, use it to allow for cargo watch auto-reloading.
        server.listen(l)?
    } else {
        // Bind to config for release.
        server.bind(bind_addr)?
    };

    Ok(server.run().await?)
}