From 47218df561e877265c739ffab59b760318ea3143 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Sat, 29 Oct 2022 23:35:20 +0300
Subject: Merge server routes from Next version

---
 vnext/server/middleware/event.js     | 76 ++++++++++++++++++++++++++++++++++++
 vnext/server/middleware/oembed.js    | 48 +++++++++++++++++++++++
 vnext/server/middleware/urlexpand.js | 14 +++++++
 3 files changed, 138 insertions(+)
 create mode 100644 vnext/server/middleware/event.js
 create mode 100644 vnext/server/middleware/oembed.js
 create mode 100644 vnext/server/middleware/urlexpand.js

(limited to 'vnext/server/middleware')

diff --git a/vnext/server/middleware/event.js b/vnext/server/middleware/event.js
new file mode 100644
index 00000000..29bede76
--- /dev/null
+++ b/vnext/server/middleware/event.js
@@ -0,0 +1,76 @@
+import { simpleParser } from 'mailparser';
+import { isPM, isReply, isService } from '../common/MessageUtils';
+import { subscribers } from '../http';
+import { sendNotification, buildNotification } from '../sender';
+var debug = require('debug')('event');
+
+/** @type {number[]} */
+const allSandboxIds = [];
+
+/**
+ * handle message event
+ *
+ * @param {import('../../client').Message} msg message
+ */
+function processMessageEvent(msg) {
+    let params = {};
+    params.uid = isPM(msg) ? msg.to.uid : msg.user.uid;
+    if (isReply(msg)) {
+        params.mid = msg.mid;
+        params.rid = msg.rid;
+    } else if (!isPM(msg) && !isService(msg)) {
+        params.mid = msg.mid;
+    }
+    subscribers(new URLSearchParams(JSON.parse(JSON.stringify(params)))).then(users => {
+        users.forEach(user => {
+            debug(`${user.uname}: ${user.unreadCount}`);
+            let [sandboxTokens, productionTokens] = (user.tokens || [])
+                .filter(t => ['mpns', 'apns', 'gcm'].includes(t.type))
+                .map(t => t.token)
+                .reduce((result, element, i) => {
+                    allSandboxIds.includes(user.uid)
+                        ? result[0].push(element)
+                        : result[1].push(element);
+                    return result;
+                }, [[], []]);
+            sendNotification(productionTokens, sandboxTokens, buildNotification(user, msg));
+        });
+    }).catch(console.error);
+}
+
+/**
+ * Handle new events
+ *
+ * @param {import("next").NextApiRequest} req
+ * @param {import("next").NextApiResponse} res
+ */
+export default function handleMessage(req, res) {
+    return simpleParser(req.body, {})
+        .then(parsed => {
+            const new_version = parsed.headers.get('x-event-version') == '1.0';
+            debug(`New event: ${parsed.text}, new version: ${new_version}`);
+            if (new_version) {
+                /** @type {import('../../client').SystemEvent} */
+                const event = JSON.parse(parsed.text || '');
+                if (event.type === 'message' && event.message) {
+                    if (event.message.service) {
+                        // TODO: remove
+                        let msg = { ...event.message };
+                        if (event.from) {
+                            msg.user = event.from;
+                        }
+                        processMessageEvent(msg);
+                    } else {
+                        processMessageEvent(event.message);
+                    }
+
+                }
+            } else {
+                /** @type {import('../../client').Message} */
+                const msg = JSON.parse(parsed.text || '');
+                processMessageEvent(msg);
+            }
+            res.end();
+        })
+        .catch(err => { console.error(err); res.status(400).send('Invalid request'); });
+}
diff --git a/vnext/server/middleware/oembed.js b/vnext/server/middleware/oembed.js
new file mode 100644
index 00000000..ad23d9e2
--- /dev/null
+++ b/vnext/server/middleware/oembed.js
@@ -0,0 +1,48 @@
+import { embeddedTweet } from '../../src/api';
+import Cors from 'cors';
+
+// Initializing the cors middleware
+// You can read more about the available options here: https://github.com/expressjs/cors#configuration-options
+const cors = Cors({
+    methods: ['POST', 'GET', 'HEAD'],
+});
+
+/** 
+ * Helper method to wait for a middleware to execute before continuing
+ * And to throw an error when an error happens in a middleware
+ * 
+ * @param {import("next").NextApiRequest} req
+ * @param {import("next").NextApiResponse} res
+ * @param { Function } fn
+ */
+function runMiddleware(req, res, fn) {
+    return new Promise((resolve, reject) => {
+        fn(req, res, (result) => {
+            if (result instanceof Error) {
+                return reject(result);
+            }
+            return resolve(result);
+        });
+    });
+}
+/**
+ * Return content for embedding.
+ *
+ * @param {import("next").NextApiRequest} req
+ * @param {import("next").NextApiResponse} res
+ */
+const oembed = async (req, res) => {
+    let url = (req.query.url || '').toString();
+    await runMiddleware(req, res, cors);
+    return embeddedTweet(url).then(result => {
+        res.send(result);
+        res.end();
+    }).catch(err => {
+        console.log(`Err: ${err.response.status}`);
+        res.status(err.response.status);
+        res.send({});
+        res.end();
+    });
+};
+
+export default oembed;
diff --git a/vnext/server/middleware/urlexpand.js b/vnext/server/middleware/urlexpand.js
new file mode 100644
index 00000000..730e2e8f
--- /dev/null
+++ b/vnext/server/middleware/urlexpand.js
@@ -0,0 +1,14 @@
+import { expandShortenedLink } from '../../src/api';
+
+/**
+ * Expand URLs
+ *
+ * @param {import("next").NextApiRequest} req
+ * @param {import("next").NextApiResponse} res
+ */
+export default function urlExpand(req, res) {
+    let url = (req.query.url || '').toString();
+    return expandShortenedLink(url).then(result => {
+        res.json(result);
+    });
+}
-- 
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