From 74b7d2a0d614f170ba5aea3a1a172a7a68356d80 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Sat, 13 Jun 2020 21:39:22 -0700
Subject: push notifications

---
 lib/notifications.js | 23 +++++++++++++
 lib/sockets.js       | 93 +++++++++++++++++++++++++++++++---------------------
 2 files changed, 79 insertions(+), 37 deletions(-)
 create mode 100644 lib/notifications.js

(limited to 'lib')

diff --git a/lib/notifications.js b/lib/notifications.js
new file mode 100644
index 00000000..710a5bfe
--- /dev/null
+++ b/lib/notifications.js
@@ -0,0 +1,23 @@
+const webpush = require("web-push");
+
+if (config.vapid) {
+  webpush.setVapidDetails(
+    config.vapid.url,
+    config.vapid.publicKey,
+    config.vapid.privateKey
+  );
+}
+
+notify = (user, payload) => {
+  let { subscriptions } = user;
+
+  if (subscriptions) {
+    subscriptions.map(async subscription => {
+      try {
+        await webpush.sendNotification(subscription, payload);
+      } catch (e) {
+        l.error("problem sending notification", e);
+      }
+    });
+  }
+};
diff --git a/lib/sockets.js b/lib/sockets.js
index 89beffb3..07af88d8 100644
--- a/lib/sockets.js
+++ b/lib/sockets.js
@@ -37,47 +37,66 @@ const names = {};
 
 wss.on("connection", function(ws, req) {
   const id = uuidv4();
-  setTimeout(() => ws.ok || ws.close(), 2000);
+  setTimeout(() => ws.user || ws.close(), 2000);
 
-  ws.on("message", async token => {
-    if (!token || token === "null") return;
+  ws.on("message", async (message) => {
+    let type, data;
     try {
-      const username = jwt.decode(token).username;
-      if (!sockets[username]) sockets[username] = {};
-      sockets[username][id] = ws;
-      names[id] = username;
+    ({ type, data } = JSON.parse(message));
+    } catch (e) {
+      l.error("coudn't parse socket message");
+    } 
 
-      let user = await getUser(username);
-      let payments = await user.getPayments({
-        where: {
-          account_id: user.account_id,
-        },
-        order: [["id", "DESC"]],
-        limit: 12,
-        include: {
-          model: db.Account,
-          as: "account"
-        }
-      });
-      let accounts = await user.getAccounts();
-      user = user.get({ plain: true });
-      user.accounts = accounts;
-      user.payments = payments;
+    let token;
+    switch (type) {
+      case "login":
+        token = data;
+        if (!token || token === "null") return;
+        try {
+          const username = jwt.decode(token).username;
+          if (!sockets[username]) sockets[username] = {};
+          sockets[username][id] = ws;
+          names[id] = username;
 
-      ws.ok = true;
-      ws.send(JSON.stringify({ type: "nodes", data: networks }));
-      ws.send(JSON.stringify({ type: "rates", data: app.get("rates") }));
-      ws.send(JSON.stringify({ type: "login", data: user }));
-      l.info("socket open", username, id);
-    } catch (e) {
-      ws.close();
-      l.error(
-        "problem opening socket",
-        token,
-        e.message,
-        id,
-        req.connection.remoteAddress
-      );
+          let user = await getUser(username);
+          let payments = await user.getPayments({
+            where: {
+              account_id: user.account_id
+            },
+            order: [["id", "DESC"]],
+            limit: 12,
+            include: {
+              model: db.Account,
+              as: "account"
+            }
+          });
+          let accounts = await user.getAccounts();
+          user = user.get({ plain: true });
+          user.accounts = accounts;
+          user.payments = payments;
+
+          ws.user = user;
+          ws.send(JSON.stringify({ type: "login", data: user }));
+          ws.send(JSON.stringify({ type: "version", data: clientVersion }));
+          l.info("socket open", username, id);
+        } catch (e) {
+          ws.close();
+          l.error(
+            "problem opening socket",
+            token,
+            e.message,
+            id,
+            req.connection.remoteAddress
+          );
+        }
+        break;
+      case "token":
+        token = data;
+        if (!ws.user) return;
+        ws.token = token;
+        break;
+      default:
+        l.warn("received socket message of unknown type", type, data);
     }
   });
 
-- 
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