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

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

@@ -0,0 +1,103 @@
+use serde::{Deserialize, Serialize};
+
+use crate::config::settings::{
+    Validate, ValidationError, cert::CertificateSettings, cors::CorsSettings,
+};
+
+/// HTTP server settings
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ServerSettings {
+    #[serde(default = "default_server_bind_address")]
+    pub bind_address: String,
+    #[serde(default = "default_server_port")]
+    pub port: u16,
+    #[serde(default)]
+    pub certificate: CertificateSettings,
+    #[serde(default)]
+    pub cors: Option<CorsSettings>,
+}
+
+impl Validate for ServerSettings {
+    fn validate(&self) -> Result<(), ValidationError> {
+        if self.bind_address.is_empty() {
+            return Err("Server bind address cannot be empty".into());
+        }
+        if self.port == 0 {
+            return Err("Server port must be greater than 0".into());
+        }
+        self.certificate.validate()?;
+        if let Some(cors) = &self.cors {
+            cors.validate()?;
+        }
+        Ok(())
+    }
+}
+
+fn default_server_bind_address() -> String {
+    "0.0.0.0".into()
+}
+
+fn default_server_port() -> u16 {
+    8080
+}
+
+#[cfg(test)]
+mod tests {
+    use std::{
+        fs,
+        path::PathBuf,
+        time::{SystemTime, UNIX_EPOCH},
+    };
+
+    use rcgen::string::Ia5String;
+
+    use super::*;
+
+    #[test]
+    fn test_esnure_send_and_sync() {
+        fn assert_send_sync<T: Send + Sync>() {}
+        assert_send_sync::<ServerSettings>();
+    }
+
+    fn make_temp_dir(prefix: &str) -> PathBuf {
+        let ts = SystemTime::now().duration_since(UNIX_EPOCH);
+        assert!(ts.is_ok());
+        let ts = ts.unwrap_or_default();
+        let path = std::env::temp_dir().join(format!(
+            "{}_{}_{}",
+            prefix,
+            std::process::id(),
+            ts.as_nanos()
+        ));
+        let created = fs::create_dir_all(&path);
+        assert!(created.is_ok());
+        path
+    }
+
+    #[test]
+    fn server_validate_fails_for_zero_port() {
+        let cert_dir = make_temp_dir("nxmesh-master-server-validate");
+        let san = Ia5String::try_from("localhost".to_string());
+        assert!(san.is_ok());
+        let san = san.unwrap_or_else(|_| unreachable!());
+        let server = ServerSettings {
+            bind_address: "0.0.0.0".to_string(),
+            port: 0,
+            certificate: CertificateSettings {
+                cert_dir: cert_dir.to_string_lossy().to_string(),
+                san_dns: vec![san],
+                san_ip: Vec::new(),
+                cert_path: None,
+                key_path: None,
+            },
+            cors: None,
+        };
+
+        let result = server.validate();
+        assert!(result.is_err());
+        let msg = result.err().unwrap_or_default();
+        assert!(msg.contains("Server port must be greater than 0"));
+
+        let _ = fs::remove_dir_all(&cert_dir);
+    }
+}