refactor: reorganize settings into separate modules for improved structure and maintainability

apps/nxmesh-master/src/config/settings/auth.rs

@@ -0,0 +1,58 @@
+use serde::{Deserialize, Serialize};
+
+use crate::config::settings::{Validate, ValidationError};
+
+/// Authentication settings
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AuthSettings {
+    pub jwt_secret: String,
+    #[serde(default = "default_jwt_expiration_hours")]
+    pub jwt_expiration_hours: u64,
+}
+
+impl Validate for AuthSettings {
+    fn validate(&self) -> Result<(), ValidationError> {
+        if self.jwt_secret.is_empty() {
+            return Err("JWT secret cannot be empty".into());
+        }
+        if self.jwt_expiration_hours == 0 {
+            return Err("JWT expiration hours must be greater than 0".into());
+        }
+        Ok(())
+    }
+}
+
+fn default_jwt_expiration_hours() -> u64 {
+    24
+}
+
+#[cfg(test)]
+mod tests {
+    use std::{
+        fs,
+        net::{IpAddr, Ipv4Addr},
+        path::PathBuf,
+        time::{SystemTime, UNIX_EPOCH},
+    };
+
+    use super::*;
+
+    #[test]
+    fn test_esnure_send_and_sync() {
+        fn assert_send_sync<T: Send + Sync>() {}
+        assert_send_sync::<AuthSettings>();
+    }
+
+    #[test]
+    fn auth_validate_fails_for_empty_secret() {
+        let auth = AuthSettings {
+            jwt_secret: "".to_string(),
+            jwt_expiration_hours: 24,
+        };
+
+        let result = auth.validate();
+        assert!(result.is_err());
+        let msg = result.err().unwrap_or_default();
+        assert!(msg.contains("JWT secret cannot be empty"));
+    }
+}