[Add] basic split

iota-storage/src/util/config_util.rs

@@ -0,0 +1,60 @@
+use crate::util::file_util::{load_file, save_file};
+use json::JsonValue;
+use once_cell::sync::Lazy;
+use tokio::sync::RwLock;
+
+pub static CONFIG: Lazy<RwLock<ConfigUtil>> = Lazy::new(|| RwLock::new(ConfigUtil::new()));
+
+pub struct ConfigUtil {
+    pub config: JsonValue,
+    pub unique: bool,
+}
+
+impl ConfigUtil {
+    pub fn new() -> Self {
+        Self {
+            config: JsonValue::new_object(),
+            unique: false,
+        }
+    }
+    pub fn clear(&mut self) {
+        self.config = JsonValue::new_object();
+    }
+    pub fn load(&mut self) {
+        let s = load_file("", "config.json");
+        if !s.is_empty() {
+            self.config = json::parse(&s).unwrap_or(JsonValue::new_object());
+        }
+    }
+
+    pub fn get_iota_id(&self) -> i64 {
+        self.config["iota_id"].as_i64().unwrap_or(0)
+    }
+
+    pub fn get_port(&self) -> u16 {
+        self.config["port"].as_u16().unwrap_or(1984)
+    }
+
+    pub fn get_public_key(&self) -> Option<String> {
+        self.config["public_key"].as_str().map(String::from)
+    }
+
+    pub fn get_private_key(&self) -> Option<String> {
+        self.config["private_key"].as_str().map(String::from)
+    }
+
+    pub fn get(&self, key: &str) -> &JsonValue {
+        &self.config[key]
+    }
+
+    pub fn change(&mut self, key: &str, value: JsonValue) {
+        self.config[key] = value;
+        self.unique = true;
+    }
+
+    pub fn update(&mut self) {
+        if self.unique {
+            save_file("", "config.json", &self.config.to_string());
+        }
+    }
+}