draft: rewrite in node

1 files changed, 73 insertions, 0 deletions

diff --git a/api.js b/api.js
new file mode 100644
index 0000000..fef1ffe
--- /dev/null
+++ b/api.js
@@ -0,0 +1,73 @@
+#!/usr/bin/node
+/* jshint esnext:true */
+"use strict";
+
+const request = require("request-promise-native"),
+    WebSocket = require("ws"),
+    webstomp = require("webstomp-client"),
+    Channel = require("async-csp").Channel;
+
+const API_FE_URL = process.env.API_FE_URL || "http://vainsocial.dev/bots/api",
+      API_WS_URL = process.env.API_WS_URL || "ws://vainsocial.dev/ws",
+      API_BE_URL = process.env.API_BE_URL || "http://vainsocial.dev/bridge";
+
+const ws = new WebSocket(API_WS_URL, { perMessageDeflate: false }),
+    notif = webstomp.over(ws);
+
+function connect() {
+    notif.connect("web", "web",
+        () => console.log("connected to queue"),
+        (err) => console.error("error connecting to queue", err));
+    keepalive();
+}
+
+function keepalive() {
+    ws.ping("", false, true);
+    setTimeout(this, 60000); 
+}
+
+ws.on("ready", connect);
+
+// TODO use keepalive / connection pool
+async function getFE(url) {
+    return await request({
+        uri: API_FE_URL + url,
+        json: true
+    });
+}
+
+async function postBE(url) {
+    return await request.post({
+        uri: API_BE_URL + url,
+        json: true
+    });
+}
+
+function subscribe(topic, channel) {
+    notif.subscribe("/topic/" + topic, async (msg) => {
+        await channel.put(msg.body);
+        msg.ack();
+    }, {"ack": "client"});
+}
+
+module.exports.searchPlayer = async function (name, timeout=30) {
+    let channel = new Channel();
+
+    subscribe("player." + name, channel);
+    await postBE("/player/" + name + "/search");
+    setTimeout(() => channel.close(), timeout*1000);
+    channel.put("");  // initial fetch
+
+    let generator = async () => {
+        let msg = await channel.take();
+        if (msg == "search_fail") {
+            throw "not found";
+        }
+        if (msg == Channel.DONE) {
+            throw "exhausted";
+        }
+        return await getFE("/player/" + name);
+    }
+
+    return { next: generator };
+}