Include next mora in greeting event

demo/shiritori.js

@@ -19,18 +19,25 @@ function displayWord(_word, end, delay) {
   div.scrollTop = div.offsetHeight;
 }
 
+function updateInput(data) {
+  if (data.next_mora !== null) {
+    let waiting = data.author === id;
+    input.placeholder = waiting ? "Waiting for other players..." : `${data.next_mora}…`;
+    input.disabled = waiting;
+    if (!waiting) input.focus();
+  }
+}
+
 ws.onmessage = e => {
   const { event, data } = JSON.parse(e.data);
   switch (event) {
     case "greeting":
       id = data.id;
+      updateInput(data);
       break;
     case "word":
-      let waiting = data.author === id;
       displayWord(data.word, true, 0);
-      input.placeholder = waiting ? "Waiting for other players..." : `${data.next_mora}…`;
-      input.disabled = waiting;
-      if (!waiting) input.focus();
+      updateInput(data);
       break;
     case "history":
       console.log(data);

src/server.rs

@@ -26,6 +26,7 @@ impl MessageResponse {
 enum MessageResponseData {
     Greeting {
         id: u64,
+        next_mora: Option<String>,
     },
     Word {
         author: u64,
@@ -165,7 +166,8 @@ impl Server {
     fn handle_connection(&mut self, client_id: u64, responder: Responder) -> Result<(), ServerError> {
         println!("A client connected with id #{}", client_id);
         responder.send(MessageResponseData::Greeting {
-            id: client_id
+            id: client_id,
+            next_mora: self.next_mora.clone(),
         }.into_message());
         responder.send(MessageResponseData::History {
             words: self.database.load_words_before(self.database.last_word_id + 1)?