✨ Version injection on website

build.rs

@@ -10,5 +10,9 @@ fn main() -> Result<()> {
         .add_instructions(&rustc)?
         .emit()?;
     embuild::espidf::sysenv::output();
+    println!(
+        "cargo:rustc-env=VERSION={}",
+        std::env::var("TD_FREE_VERSION").unwrap_or("UNKNOWN".to_string())
+    );
     Ok(())
 }

src/index.html

@@ -83,8 +83,9 @@
         <h1>Td-Free</h1>
         <div id="status" class="status">Connecting...</div>
         <p id="content"></p>
-        <div style="display: flex;">
+        <div style="display: flex; flex-direction: column; margin-top: auto;">
             <a href="/wifi" class="wifi-link" onclick="wifi_cfg">Wifi Config</a>
+            <p class="wifi-link" style="color: gray; font-size: smaller;">Verion {{VERSION}}</p>
             <!-- <a href="/update" class="wifi-link" onclick="update_fw">Update Firmware</a> -->
         </div>
     </div>

src/main.rs

@@ -156,7 +156,14 @@ fn main() -> Result<(), ()> {
     server
         .fn_handler("/", Method::Get, |req| {
             req.into_ok_response()?
-                .write_all(INDEX_HTML.as_bytes())
+                .write_all(
+                    INDEX_HTML
+                        .replace(
+                            "{{VERSION}}",
+                            option_env!("TD_FREE_VERSION").unwrap_or("UNKNOWN"),
+                        )
+                        .as_bytes(),
+                )
                 .map(|_| ())
         })
         .unwrap();