Feat: Integrate configuration module for database connection string

src/db/mod.rs

@@ -1,14 +1,15 @@
-use std::env;
-
-use dotenv::dotenv;
 use tokio::sync::OnceCell;
 use tokio_postgres::{Client, Error, NoTls};
 
+use crate::configuration::get_configuration;
+
 static CLIENT: OnceCell<Client> = OnceCell::const_new();
 
 async fn init_client() -> Result<Client, Error> {
-    dotenv().ok();
-    let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
+    let database_url = get_configuration()
+        .expect("Failed to read configuration")
+        .database
+        .connection_string();
 
     let (client, connection) = tokio_postgres::connect(&database_url, NoTls).await?;
 

src/lib.rs

@@ -195,17 +195,19 @@ impl Task {
 
     pub async fn list_tasks(date: Option<NaiveDate>) -> Result<Vec<Task>, Box<dyn Error>> {
         let client = get_client().await?;
+        let date_params: NaiveDate;
         let (query, params): (&str, &[&(dyn ToSql + Sync)]) = match date {
-            Some(_d) =>
+            Some(d) => {
+                date_params = d;
                 (
                     "SELECT description, priority, difficulty, deadline FROM todo WHERE deadline = $1::date",
-                    &[&date.unwrap()],
-                ),
-            None =>
-                (
-                    "SELECT description, priority, difficulty, deadline FROM todo",
-                    &[],
+                    &[&date_params],
                 )
+            }
+            None => (
+                "SELECT description, priority, difficulty, deadline FROM todo",
+                &[],
+            ),
         };
         let rows = client
             .query(query, params)