init basic database folder structure

public/database/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "database"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+path = "src/lib.rs"
+
+[dependencies]
+shared = { path = "../shared" }
+migration = { path = "../migration" }
+chrono = { version = "0.4", features = ["serde"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+tokio = { version = "1.47.0", features = ["full"] }
+sea-orm = { version = "2.0.0-rc", features = [ "sqlx-postgres", "sqlx-mysql", "sqlx-sqlite", "runtime-tokio-rustls", "macros", "mock", "with-chrono", "with-json", "with-uuid", "sqlite-use-returning-for-3_35", "mariadb-use-returning" ] }
+
+[lints]
+workspace = true

public/database/src/lib.rs

@@ -0,0 +1,22 @@
+use sea_orm::ConnectOptions;
+
+pub async fn get_connection<T: FnOnce(&mut ConnectOptions) -> &mut ConnectOptions>(
+    connection_string: &str,
+    option_fn: Option<T>,
+) -> Result<sea_orm::DatabaseConnection, sea_orm::DbErr> {
+    use sea_orm::Database;
+
+    let mut opt = ConnectOptions::new(connection_string.to_string());
+    opt.max_connections(10)
+        .min_connections(0)
+        .connect_timeout(std::time::Duration::from_secs(8))
+        .idle_timeout(std::time::Duration::from_secs(8))
+        .test_before_acquire(true)
+        .sqlx_logging(false);
+
+    if let Some(option_fn) = option_fn {
+        option_fn(&mut opt);
+    }
+
+    Database::connect(opt).await
+}