Move common config reading/writing logic into cce-ui

 src/config.rs | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 src/lib.rs    |  1 +
 2 files changed, 48 insertions(+)

diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..a88e717
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,47 @@
+use std::fs;
+use serde_json::Value;
+
+pub fn update_json_in_memory(val_obj: &mut Value, key: &str, value: &str, default_section: &str) -> bool {
+    let j_val = if let Ok(parsed_val) = serde_json::from_str::<Value>(value) {
+        parsed_val
+    } else {
+        serde_json::json!(value)
+    };
+
+    let mut updated = false;
+    if let Some(obj) = val_obj.as_object_mut() {
+        for (_sec_name, sec_val) in obj.iter_mut() {
+            if let Some(sec_obj) = sec_val.as_object_mut() {
+                if sec_obj.contains_key(key) {
+                    sec_obj.insert(key.to_string(), j_val.clone());
+                    updated = true;
+                    break;
+                }
+            }
+        }
+        if !updated {
+            if let Some(sec_obj) = obj.get_mut(default_section).and_then(|s| s.as_object_mut()) {
+                sec_obj.insert(key.to_string(), j_val);
+                updated = true;
+            } else {
+                let mut map = serde_json::Map::new();
+                map.insert(key.to_string(), j_val);
+                obj.insert(default_section.to_string(), Value::Object(map));
+                updated = true;
+            }
+        }
+    }
+    updated
+}
+
+pub fn write_config_value(path: &str, key: &str, value: &str, default_section: &str) -> bool {
+    let content = fs::read_to_string(path).unwrap_or_default();
+    let mut val: Value = serde_json::from_str(&content).unwrap_or_else(|_| serde_json::json!({}));
+    
+    if update_json_in_memory(&mut val, key, value, default_section) {
+        if let Ok(updated_str) = serde_json::to_string_pretty(&val) {
+            return fs::write(path, updated_str).is_ok();
+        }
+    }
+    false
+}
diff --git a/src/lib.rs b/src/lib.rs
index ff6c2d2..4d242fc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,6 @@
 pub mod color;
 pub mod widget;
+pub mod config;
 pub mod layout;
 pub mod wayland;
 pub mod protocol;