refactor: move entrypoint to bin

src/bin/pokedex-api.rs

@@ -0,0 +1,43 @@
+#![deny(warnings)]
+#![deny(clippy::all, clippy::pedantic, clippy::nursery, clippy::cargo)]
+#![allow(clippy::missing_errors_doc, clippy::multiple_crate_versions)]
+
+use pokedex_api::{app, config::AppConfig, telemetry};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    telemetry::init_tracing();
+    let config = AppConfig::from_env()?;
+    let listener = tokio::net::TcpListener::bind(config.bind_addr).await?;
+    let state = app::AppState::from_config(&config)?;
+
+    axum::serve(listener, app::create_app(state))
+        .with_graceful_shutdown(shutdown_signal())
+        .await?;
+
+    Ok(())
+}
+
+async fn shutdown_signal() {
+    let ctrl_c = async {
+        tokio::signal::ctrl_c()
+            .await
+            .expect("failed to install Ctrl+C handler");
+    };
+
+    #[cfg(unix)]
+    let terminate = async {
+        tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())
+            .expect("failed to install SIGTERM handler")
+            .recv()
+            .await;
+    };
+
+    #[cfg(not(unix))]
+    let terminate = std::future::pending::<()>();
+
+    tokio::select! {
+        () = ctrl_c => {},
+        () = terminate => {},
+    }
+}