basic creation

src/util/configUtil.rs

@@ -0,0 +1,65 @@
+use json::JsonValue;
+use std::fs::{self, File};
+use std::io::{Read, Write};
+use std::path::Path;
+
+use crate::files::Files;
+
+pub struct ConfigUtil {
+    pub config: JsonValue,
+    pub unique: bool,
+}
+
+impl ConfigUtil {
+    pub fn new() -> Self {
+        Self {
+            config: JsonValue::new_object(),
+            unique: false,
+        }
+    }
+
+    fn load_file(path: &str) -> String {
+        if let Ok(mut f) = File::open(path) {
+            let mut content = String::new();
+            let _ = f.read_to_string(&mut content);
+            content
+        } else {
+            String::new()
+        }
+    }
+
+    fn save_file(path: &str, content: &str) -> std::io::Result<()> {
+        if let Some(parent) = Path::new(path).parent() {
+            fs::create_dir_all(parent)?;
+        }
+        let mut file = File::create(path)?;
+        file.write_all(content.as_bytes())
+    }
+
+    pub fn load(&mut self) {
+        let s = Self::load_file(Files::MAIN);
+        if !s.is_empty() {
+            self.config = json::parse(&s).unwrap_or(JsonValue::new_object());
+        }
+        if self.config.has("port") {
+            if let Some(port) = self.config["port"].as_i32() {
+                // Set community manager port
+            }
+        }
+    }
+
+    pub fn change(&mut self, key: &str, value: JsonValue) {
+        self.config[key] = value;
+        self.unique = true;
+    }
+
+    pub fn update(&mut self) {
+        if self.unique {
+            let _ = self.save();
+        }
+    }
+
+    pub fn save(&self) -> std::io::Result<()> {
+        Self::save_file(Files::MAIN, &self.config.dump())
+    }
+}