ref(global) move modules, extract constants

backend/api_server/src/init/mod.rs

@@ -0,0 +1,45 @@
+mod database;
+pub mod logger;
+pub mod server;
+
+use macros::panic_with_log;
+use std::{env, panic};
+use tracing::{info, Level};
+
+pub fn load_env() {
+    if let Some(env_file) = env::args().nth(1) {
+        match dotenv::from_filename(&env_file) {
+            Ok(_) => {
+                println!("[info] env loaded from {}, starting up", env_file);
+            }
+            Err(e) => {
+                panic!("[fatal] failed to read {}: {}", env_file, e);
+            }
+        }
+    } else {
+        println!("[info] no .env file referred, starting up")
+    }
+}
+
+pub async fn start() {
+    let db_pool = match database::init().await {
+        Ok(pool) => {
+            info!("database connection pool initialized");
+            pool
+        }
+        Err(e) => {
+            panic_with_log!(
+                Level::ERROR,
+                "database connection pool failed to initialize: {}",
+                e
+            );
+        }
+    };
+
+    match server::start(db_pool).await {
+        Ok(_) => {}
+        Err(e) => {
+            panic_with_log!(Level::ERROR, "server panicked: {}", e)
+        }
+    }
+}