env vars enum + display-default impl

noxis-rs/src/options/preboot.rs

@@ -6,6 +6,51 @@ use std::path::PathBuf;
 
 const SOCKET_PATH: &str = "/var/run/enode/hostagent.sock";
 
+///
+enum EnvVars {
+    NoxisNoHagent,
+    NoxisNoLogs,
+    NoxisRefreshLogs,
+    NoxisNoRemoteConfig,
+    NoxisNoConfigSub,
+    NoxisSocketPath,
+    NoxisLogTo,
+    NoxisRemoteServerUrl,
+    NoxisConfig,
+    NoxisMetrics,
+}
+
+///
+impl std::fmt::Display for EnvVars {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        match self {
+            EnvVars::NoxisNoHagent => write!(f, "NOXIS_NO_HAGENT"),
+            EnvVars::NoxisNoLogs => write!(f, "NOXIS_NO_LOGS"),
+            EnvVars::NoxisRefreshLogs => write!(f, "NOXIS_REFRESH_LOGS"),
+            EnvVars::NoxisNoRemoteConfig => write!(f, "NOXIS_NO_REMOTE_CONFIG"),
+            EnvVars::NoxisNoConfigSub => write!(f, "NOXIS_NO_CONFIG_SUB"),
+            EnvVars::NoxisSocketPath => write!(f, "NOXIS_SOCKET_PATH"),
+            EnvVars::NoxisLogTo => write!(f, "NOXIS_LOG_TO"),
+            EnvVars::NoxisRemoteServerUrl => write!(f, "NOXIS_REMOTE_SERVER_URL"),
+            EnvVars::NoxisConfig => write!(f, "NOXIS_CONFIG"),
+            EnvVars::NoxisMetrics => write!(f, "NOXIS_METRICS"),
+        }
+    }
+}
+
+impl Default for EnvVars {
+    fn default() {
+        todo!()
+    //     setting default env vars values if not exists
+    }
+}
+
+impl EnvVars {
+    fn setup() {
+
+    }
+}
+
 /// # Enum `MetricsPrebootParams`
 /// ## for setting up metrics mode as preboot param from command prompt 
 ///