working use_cookie hook

src/utils.rs

@@ -1,3 +1,5 @@
+use dioxus::prelude::*;
+use std::str::FromStr;
 use wasm_bindgen::JsCast;
 use web_sys::{window, HtmlDocument};
 
@@ -36,6 +38,31 @@ pub fn get_cookie(name: &str) -> Option<String> {
     None
 }
 
+pub fn use_cookie<T: FromStr + Default + std::fmt::Display + 'static>(
+    name: &str,
+    default: fn() -> T,
+) -> Signal<T> {
+    let name = name.to_string();
+    let signal = use_signal(default);
+
+    use_effect({
+        let mut signal = signal.clone();
+        move || {
+            if let Some(c) = get_cookie(&name) {
+                if let Ok(cv) = T::from_str(&c) {
+                    signal.set(cv);
+                }
+            }
+        }
+    });
+
+    signal
+}
+
 pub fn redirect(target: &str) {
-    web_sys::window().unwrap().location().set_href(target).unwrap();
+    web_sys::window()
+        .unwrap()
+        .location()
+        .set_href(target)
+        .unwrap();
 }