Multi live

src/router/chat.rs

@@ -7,11 +7,33 @@ pub fn routes(cfg: &mut web::ServiceConfig) {
     cfg.service(
         web::scope("/chat")
             .route("/home", web::post().to(home))
+            .route("/talk/get_stamp", web::get().to(get_stamp))
             .route("/talk/start", web::post().to(start))
             .route("/talk/end", web::post().to(end))
     );
 }
 
+// The stamps this account owns. ew does not track stamp unlocks, so everyone has the
+// masterdata initial set — the same list /chat/home reports, deliberately from one
+// source so the two endpoints can never disagree.
+fn owned_stamp_ids() -> JsonValue {
+    databases::INITIAL_CHAT_STAMPS.clone()
+}
+
+// GET /api/chat/talk/get_stamp (Protocol.send_get_stamp, FuncId.GET_STAMP).
+// RecvGetStampRData carries a single `master_chat_stamp_ids` array, which its Notify()
+// feeds to CallOnUpdateChatStampListNotify — the same sink RecvChatHomeRData uses, so
+// the stamp picker ends up with whatever this returns. The client sends no parameters.
+//
+// This endpoint appears in neither official capture (0 hits across the 288MB JP and
+// 1.4GB EN logs), so the shape is taken from the client class and the contents from the
+// /chat/home captures that do exist and carry the same field.
+async fn get_stamp(Login(_key): Login) -> impl Responder {
+    Api(Some(object!{
+        "master_chat_stamp_ids": owned_stamp_ids()
+    }))
+}
+
 pub fn add_chat(id: i64, num: i64, chats: &mut JsonValue) -> bool {
     for data in chats.members() {
         if data["chat_id"] == id && data["room_id"] == num {
@@ -48,7 +70,7 @@ async fn home(Login(key): Login) -> impl Responder {
     Api(Some(object!{
         "progress_list": chats,
         "master_chat_room_ids": rooms,
-        "master_chat_stamp_ids": [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,43,44,45,46,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,11001003,22001001,33001001,44001002],
+        "master_chat_stamp_ids": owned_stamp_ids(),
         "master_chat_attachment_ids": []
     }))
 }
@@ -75,3 +97,41 @@ async fn end(Session { key, body }: Session) -> impl Responder {
     
     Api(Some(array![]))
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // Verbatim from an official /api/chat/home capture (JP log, the 65-occurrence
+    // baseline seen on accounts that had earned no extra stamps yet). Both the JP and EN
+    // chat_stamp tables reproduce it exactly from _initialStamp, which is what lets
+    // get_stamp serve masterdata instead of a hardcoded literal.
+    const OFFICIAL_INITIAL_STAMPS: [i64; 97] = [
+        1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,19,20,21,22,23,24,25,26,27,28,29,30,
+        31,32,33,34,35,36,37,38,39,40,41,43,44,45,46,48,49,50,51,52,53,54,55,56,57,58,
+        59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,
+        85,86,87,88,89,90,91,92,93,94,95,96,11001003,22001001,33001001,44001002
+    ];
+
+    #[test]
+    fn the_initial_stamp_set_matches_official() {
+        let ids: Vec<i64> = owned_stamp_ids().members().map(|s| s.as_i64().unwrap()).collect();
+        assert_eq!(ids, OFFICIAL_INITIAL_STAMPS.to_vec());
+        // Order matters: the official list is masterdata order, not sorted (the 11xxxxxx
+        // band trails the small ids).
+        assert_eq!(ids.first(), Some(&1));
+        assert_eq!(ids.last(), Some(&44001002));
+        // The gaps are real - 18, 42 and 47 are not initial stamps.
+        for missing in [18, 42, 47] {
+            assert!(!ids.contains(&missing), "{missing} should not be an initial stamp");
+        }
+    }
+
+    #[test]
+    fn get_stamp_and_chat_home_cannot_disagree() {
+        // Both endpoints read the one source; this is what stops /chat/home's list and
+        // the stamp picker's list from drifting apart.
+        assert_eq!(owned_stamp_ids(), *databases::INITIAL_CHAT_STAMPS);
+        assert!(!owned_stamp_ids().is_empty());
+    }
+}