feat(backend) backed init

backend/src/main.rs

@@ -0,0 +1,41 @@
+use std::env;
+use std::error::Error;
+
+use axum::Router;
+use axum::routing::get;
+use dotenv::dotenv;
+use sqlx::postgres::PgPoolOptions;
+
+use crate::api::get_post::get_post;
+use crate::api::get_post_list::get_post_list;
+
+mod api;
+mod model;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn Error>> {
+    dotenv()?;
+
+    let port: u32 = match env::var("BACKEND_PORT") {
+        Ok(value) => value.parse().unwrap(),
+        Err(_) => 3001,
+    };
+
+    let db_connection: String = env::var("DB_CONNECTION")?;
+
+    let db_pool = PgPoolOptions::new()
+        .connect(&db_connection)
+        .await
+        .expect("failed to load database");
+
+    let app = Router::new()
+        .route("/api/get/post_list", get(get_post_list))
+        .route("/api/get/post/:post_id", get(get_post))
+        .with_state(db_pool);
+
+    let listener = tokio::net::TcpListener::bind(format!("0.0.0.0:{}", port)).await?;
+
+    axum::serve(listener, app).await?;
+
+    Ok(())
+}