lyrid 0.1.0

A music universe: a canonical sky of artists and genres you explore through real listening
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mod app;
mod config;

use anyhow::{Context, Result};
use sqlx::postgres::PgPoolOptions;
use tokio::net::TcpListener;
use tracing_subscriber::EnvFilter;

#[tokio::main]
async fn main() -> Result<()> {
    // Loaded before the logger so RUST_LOG can live in .env too. A missing
    // file is normal: in production the environment is set by the deployment.
    match dotenvy::dotenv() {
        Ok(_) | Err(dotenvy::Error::Io(_)) => {}
        Err(error) => return Err(error).context("failed to read .env"),
    }

    tracing_subscriber::fmt()
        .with_env_filter(EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("lyrid=info,tower_http=info")))
        .init();

    let config = config::Config::from_env()?;

    let pool = PgPoolOptions::new()
        .max_connections(10)
        .connect(&config.database_url)
        .await
        .context("failed to connect to PostgreSQL")?;
    sqlx::migrate!().run(&pool).await.context("failed to apply database migrations")?;

    let listener = TcpListener::bind(config.addr)
        .await
        .with_context(|| format!("failed to bind {}", config.addr))?;
    tracing::info!(version = env!("CARGO_PKG_VERSION"), addr = %config.addr, "lyrid listening");

    axum::serve(listener, app::router(pool))
        .with_graceful_shutdown(shutdown_signal())
        .await
        .context("server error")?;
    Ok(())
}

async fn shutdown_signal() {
    if let Err(error) = tokio::signal::ctrl_c().await {
        tracing::error!(%error, "failed to install the shutdown signal handler");
        return;
    }
    tracing::info!("shutting down");
}