impl for getting env values

server/app/src/repo.rs

@@ -1,3 +1,5 @@
+use std::{env, sync::LazyLock};
+
 use anyhow::{Ok, Result};
 use sqlx::{
     mysql::{MySqlConnectOptions, MySqlPoolOptions},
@@ -17,15 +19,40 @@ pub struct Repository {
 
 impl Repository {
     pub async fn setup() -> Result<Self> {
-        let options = MySqlConnectOptions::new()
-            .host("host")
-            .port(1111)
-            .username("username")
-            .password("password")
-            .database("database");
-
-        let pool = MySqlPoolOptions::new().connect_with(options).await?;
+        let pool = MySqlPoolOptions::new()
+            .connect_with(DB_CONFIG.options())
+            .await?;
 
         Ok(Self { pool })
     }
 }
+
+struct Config {
+    db_database: String,
+    db_host: String,
+    db_password: String,
+    db_port: u16,
+    db_username: String,
+}
+
+impl Config {
+    fn options(&self) -> MySqlConnectOptions {
+        MySqlConnectOptions::new()
+            .database(&self.db_database)
+            .host(&self.db_host)
+            .password(&self.db_password)
+            .port(self.db_port)
+            .username(&self.db_username)
+    }
+}
+
+static DB_CONFIG: LazyLock<Config> = LazyLock::new(|| Config {
+    db_database: env::var("DB_DATABASE").expect("Failed to get DB_DATABASE !"),
+    db_host: env::var("DB_HOST").expect("Failed to get DB_HOST !"),
+    db_password: env::var("DB_PASSWORD").expect("Failed to get DB_PASSWORD !"),
+    db_port: env::var("DB_PORT")
+        .expect("Failed to get DB_PORT !")
+        .parse()
+        .expect("Failed to parse String to u16"),
+    db_username: env::var("DB_USERNAME").expect("Failed to get DB_USERNAME !"),
+});