Refactor database connection handling and configuration

src/db.rs

@@ -1,21 +1,60 @@
+use std::time::Duration;
 use sqlx::{Pool, Sqlite};
 
-#[cfg(feature = "db-sqlx")]
-pub async fn connect_sqlite(url: &str) -> Result<Pool<Sqlite>, sqlx::Error> {
-    sqlx::sqlite::SqlitePoolOptions::new()
-        .max_connections(5)
-        .connect(url)
-        .await
-}
-
-// Future expansion for Postgres
 #[cfg(feature = "postgres")]
 use sqlx::Postgres;
 
-#[cfg(feature = "postgres")]
-pub async fn connect_postgres(url: &str) -> Result<Pool<Postgres>, sqlx::Error> {
-    sqlx::postgres::PgPoolOptions::new()
-        .max_connections(5)
-        .connect(url)
-        .await
+/// Universal Database Configuration
+#[derive(Debug, Clone)]
+pub struct DatabaseConfig {
+    pub url: String,
+    pub max_connections: u32,
+    pub acquire_timeout: Duration,
 }
+
+impl Default for DatabaseConfig {
+    fn default() -> Self {
+        Self {
+            url: "sqlite::memory:".to_string(),
+            max_connections: 5,
+            acquire_timeout: Duration::from_secs(30),
+        }
+    }
+}
+
+/// A wrapper around various DB pools.
+/// The Template uses this type so it doesn't care if it's Sqlite or Postgres.
+#[derive(Clone, Debug)]
+pub enum DatabasePool {
+    Sqlite(Pool<Sqlite>),
+    #[cfg(feature = "postgres")]
+    Postgres(Pool<Postgres>),
+}
+
+/// The single entry point for connecting to any DB.
+pub async fn connect(config: &DatabaseConfig) -> Result<DatabasePool, sqlx::Error> {
+    // 1. Try Postgres if the feature is enabled AND the URL looks like postgres
+    #[cfg(feature = "postgres")]
+    if config.url.starts_with("postgres://") || config.url.starts_with("postgresql://") {
+        let pool = sqlx::postgres::PgPoolOptions::new()
+            .max_connections(config.max_connections)
+            .acquire_timeout(config.acquire_timeout)
+            .connect(&config.url)
+            .await?;
+        return Ok(DatabasePool::Postgres(pool));
+    }
+
+    // 2. Default to Sqlite
+    let pool = sqlx::sqlite::SqlitePoolOptions::new()
+        .max_connections(config.max_connections)
+        .acquire_timeout(config.acquire_timeout)
+        .connect(&config.url)
+        .await?;
+    
+    Ok(DatabasePool::Sqlite(pool))
+}
+
+// Re-export specific connectors if you still need manual control
+pub async fn connect_sqlite(url: &str) -> Result<Pool<Sqlite>, sqlx::Error> {
+   sqlx::sqlite::SqlitePoolOptions::new().connect(url).await
+}