Database connection and user registration

src/configuration.rs

@@ -0,0 +1,42 @@
+use serde::Deserialize;
+
+pub fn get_configuration() -> Result<Settings, config::ConfigError> {
+    let settings = config::Config::builder()
+        .add_source(config::File::new(
+            "configuration.yaml",
+            config::FileFormat::Yaml,
+        ))
+        .build()?;
+    settings.try_deserialize::<Settings>()
+}
+
+#[derive(Deserialize)]
+pub struct Settings {
+    pub database: DatabaseSettings,
+    pub application_port: u16,
+}
+
+#[derive(Deserialize)]
+pub struct DatabaseSettings {
+    pub username: String,
+    pub password: String,
+    pub port: u16,
+    pub host: String,
+    pub database_name: String,
+}
+
+impl DatabaseSettings {
+    pub fn connection_string(&self) -> String {
+        format!(
+            "postgres://{}:{}@{}:{}/{}",
+            self.username, self.password, self.host, self.port, self.database_name
+        )
+    }
+
+    pub fn connection_string_without_db(&self) -> String {
+        format!(
+            "postgres://{}:{}@{}:{}",
+            self.username, self.password, self.host, self.port
+        )
+    }
+}