From 875e12b88f55250c4adb0a5304b150ac00ce4efd Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Sat, 5 Mar 2022 11:32:38 +0100
Subject: Add query/reply API to server and modules.

---
 public/common/play.js | 15 ++++++++++++++-
 server.js             | 24 ++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/public/common/play.js b/public/common/play.js
index e58ca04..0fa432a 100644
--- a/public/common/play.js
+++ b/public/common/play.js
@@ -376,12 +376,18 @@ function connect_play() {
 		case 'state':
 			view = arg;
 			on_update_header();
-			on_update();
+			if (typeof on_update === 'function')
+				on_update();
 			on_update_log();
 			if (view.game_over)
 				on_game_over();
 			break;
 
+		case 'reply':
+			if (typeof on_reply === 'function')
+				on_reply(arg[0], arg[1]);
+			break;
+
 		case 'save':
 			window.localStorage[params.title_id + "/save"] = arg;
 			break;
@@ -547,6 +553,13 @@ function send_action(verb, noun) {
 	return false;
 }
 
+function send_query(q, param) {
+	if (param !== undefined)
+		send_message("query", [q, param]);
+	else
+		send_message("query", q);
+}
+
 function confirm_resign() {
 	if (window.confirm("Are you sure that you want to resign?"))
 		send_message("resign");
diff --git a/server.js b/server.js
index a8a97e1..f97a0ed 100644
--- a/server.js
+++ b/server.js
@@ -1624,11 +1624,34 @@ function on_action(socket, action, arg) {
 	}
 }
 
+function on_query(socket, q) {
+	let params = undefined;
+	if (Array.isArray(q)) {
+		params = q[1];
+		q = q[0];
+	}
+	if (params !== undefined)
+		SLOG(socket, "QUERY", q, JSON.stringify(params));
+	else
+		SLOG(socket, "QUERY", q);
+	try {
+		if (socket.rules.query) {
+			let state = get_game_state(socket.game_id);
+			let reply = socket.rules.query(state, socket.role, q, params);
+			send_message(socket, 'reply', [q, reply]);
+		}
+	} catch (err) {
+		console.log(err);
+		return send_message(socket, 'error', err.toString());
+	}
+}
+
 function on_resign(socket) {
 	SLOG(socket, "RESIGN");
 	try {
 		let state = get_game_state(socket.game_id);
 		let old_active = state.active;
+		// TODO: shared "resign" function
 		state = socket.rules.resign(state, socket.role);
 		put_game_state(socket.game_id, state, old_active);
 		put_replay(socket.game_id, socket.role, 'resign', null);
@@ -1739,6 +1762,7 @@ function on_restart(socket, scenario) {
 function handle_message(socket, cmd, arg) {
 	switch (cmd) {
 	case 'action': on_action(socket, arg[0], arg[1]); break;
+	case 'query': on_query(socket, arg); break;
 	case 'resign': on_resign(socket); break;
 	case 'getchat': on_getchat(socket, arg); break;
 	case 'chat': on_chat(socket, arg); break;
-- 
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