added config.toml support for flexible server configuration, integrated toml crate for parsing, refactored configuration management to use AppSettings, and updated database initialization logic

backend-rust/src/main.rs

@@ -4,16 +4,12 @@ mod db;
 mod models;
 mod services;
 
-use crate::config::Config;
+use crate::config::{AppSettings};
 use anyhow::Result;
 use axum::Router;
 use axum::routing::get;
-use sqlx::sqlite::SqliteConnectOptions;
-use std::str::FromStr;
 use tokio::signal;
-use tokio::signal::ctrl_c;
-use tokio::signal::unix::signal;
-use tracing::{error, info};
+use tracing::{info};
 use tracing_subscriber;
 
 #[tokio::main]
@@ -23,15 +19,15 @@ async fn main() -> Result<()> {
         .compact()
         .init();
 
-    let config = Config::from_env();
+    let app_settings = AppSettings::get_app_settings();
 
-    let pool = db::initialize_db(&config).await?;
+    let pool = db::initialize_db(&app_settings).await?;
 
     let app = create_app(pool);
 
     let listener =
-        tokio::net::TcpListener::bind(format!("{}:{}", config.host, config.port)).await?;
-    info!("Server starting on {}:{}", config.host, config.port);
+        tokio::net::TcpListener::bind(format!("{}:{}", app_settings.config.server.host, app_settings.config.server.port)).await?;
+    info!("Server starting on {}:{}", app_settings.config.server.host, app_settings.config.server.port);
 
     axum::serve(listener, app)
         .with_graceful_shutdown(shutdown_signal())