create server_cached function

packages/fullstack/src/html_storage/deserialize.rs

@@ -0,0 +1,56 @@
+use serde::de::DeserializeOwned;
+
+use base64::engine::general_purpose::STANDARD;
+use base64::Engine;
+
+use super::HTMLDataCursor;
+
+#[allow(unused)]
+pub(crate) fn serde_from_bytes<T: DeserializeOwned>(string: &[u8]) -> Option<T> {
+    let decompressed = STANDARD.decode(string).ok()?;
+
+    postcard::from_bytes(&decompressed).ok()
+}
+
+static SERVER_DATA: once_cell::sync::Lazy<Option<HTMLDataCursor>> =
+    once_cell::sync::Lazy::new(|| {
+        #[cfg(target_arch = "wasm32")]
+        {
+            let attribute = web_sys::window()?
+                .document()?
+                .get_element_by_id("dioxus-storage-data")?
+                .get_attribute("data-serialized")?;
+
+            let data: super::HTMLData = serde_from_bytes(attribute.as_bytes())?;
+
+            Some(data.cursor())
+        }
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            None
+        }
+    });
+
+pub(crate) fn take_server_data<T: DeserializeOwned>() -> Option<T> {
+    SERVER_DATA.as_ref()?.take()
+}
+
+#[cfg(not(feature = "ssr"))]
+/// Get the props from the document. This is only available in the browser.
+///
+/// When dioxus-fullstack renders the page, it will serialize the root props and put them in the document. This function gets them from the document.
+pub fn get_root_props_from_document<T: DeserializeOwned>() -> Option<T> {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        None
+    }
+    #[cfg(target_arch = "wasm32")]
+    {
+        let attribute = web_sys::window()?
+            .document()?
+            .get_element_by_id("dioxus-storage-props")?
+            .get_attribute("data-serialized")?;
+
+        serde_from_bytes(attribute.as_bytes())
+    }
+}