Implement error tracking and logging

frontend/src/views/UserView.vue

@@ -15,7 +15,19 @@ export default {
             const res = await fetch(`http://localhost:7000/api/users/${username}`)
 
             if (res.status !== 200) {
-                return;
+                const data = await res.json()
+                
+                if(!data.code) {
+                    return {
+                        status: "error",
+                        code: "error"
+                    }
+                }
+
+                return {
+                    ...data
+                }
+
             }
 
             const data: StreamerData = await res.json()
@@ -57,6 +69,21 @@ export default {
         </div>
     </div>
 
+    <div v-else-if="data.status === 'error'" class="flex flex-col max-w-prose justify-center text-center mx-auto p-6 bg-ctp-crust rounded-lg text-white">
+        <div class="mb-6">
+            <h1 class="font-bold text-5xl">oops...</h1>
+            <p class="font-bold text-3xl">this wasn't supposed to happen</p>
+        </div>
+
+        
+        <p class="text-xl">the server was encountered an error while retriving the data, and now we're here :3</p>
+
+        <div class="mt-5">
+            <p class="text-xl">please contact the administrator with this code</p>
+            <p class="text-xl">error identifier: {{ data.code }}</p>
+        </div>
+    </div>
+
     <div v-else class="flex flex-wrap mx-auto bg-ctp-crust p-6 rounded-lg max-w-prose text-white">
 
 
@@ -71,7 +98,7 @@ export default {
             <div class="flex">
                 <div class="container w-28 h-28 relative">
                     <img :src="data.pfp" class="rounded-full border-4 border-ctp-teal p-0.5 w-auto h-28">
-                    <span class="absolute bottom-0 right-[1.8rem] bg-ctp-red font-bold p-2.5 py-0.5 rounded-md">LIVE</span>
+                    <span v-if="data.isLive" class="absolute bottom-0 right-[1.8rem] bg-ctp-red font-bold p-2.5 py-0.5 rounded-md">LIVE</span>
                 </div>
 
                 <div class="ml-3">

server/index.ts

@@ -2,12 +2,15 @@ import express, { Express, NextFunction, Request, Response } from 'express';
 import dotenv from 'dotenv'
 import history from 'connect-history-api-fallback'
 import routes from './routes'
+import { logger, errorHandler, uuid } from './util/logger'
 
 dotenv.config()
 
 const app: Express = express();
 const port = process.env.PORT
 
+
+app.use(uuid)
 app.use(routes)
 app.use(history())
 app.use(express.static('../frontend/dist'))
@@ -22,14 +25,6 @@ app.use((req, res) => {
 // handle errors
 app.use(errorHandler)
 
-function errorHandler(err: Error, req: Request, res: Response, next: NextFunction) {
-  if (res.headersSent) {
-    return next(err)
-  }
-  res.status(500)
-  res.send('error')
-  console.log(err)
-}
 
 app.listen(port, () => {
   console.log('Server up')

server/package.json

@@ -1,10 +1,11 @@
 {
   "dependencies": {
-    "@dragongoose/streamlink": "^1.0.3",
+    "@dragongoose/streamlink": "^1.1.1",
     "connect-history-api-fallback": "^2.0.0",
     "dotenv": "^16.0.3",
     "express": "^4.18.2",
-    "puppeteer": "^19.7.2"
+    "puppeteer": "^19.7.2",
+    "winston": "^3.8.2"
   },
   "devDependencies": {
     "@types/connect-history-api-fallback": "^1.3.5",

server/routes/profile/profileRoute.ts

@@ -53,7 +53,7 @@ const abbreviatedNumberToNumber = (num: string) => {
 // https:// advancedweb.hu/how-to-speed-up-puppeteer-scraping-with-parallelization/
 const withBrowser = async (fn: Function) => {
 	const browser = await puppeteer.launch({
-        headless: false,
+        headless: true,
         args: ['--no-sandbox']
     });
 	try {
@@ -180,7 +180,7 @@ const getAboutData = async (page: Page) => {
         return aboutData as StreamerData
 }
 
-const getStreamerData = async (username: string) => {
+const getStreamerData = async (username: string): Promise<StreamerData> => {
     let recoveredData: LooseObject = {}
 
     await withBrowser(async (browser: Browser) => {
@@ -190,7 +190,6 @@ const getStreamerData = async (username: string) => {
             return Promise.all([getStreamData(page), getAboutData(page)])
         })
         
-        
         recoveredData = result[1]
         recoveredData.stream = result[0]
         if(result[0] !== null) recoveredData.isLive = true
@@ -198,23 +197,25 @@ const getStreamerData = async (username: string) => {
         await browser.close()
     })
 
-    
     recoveredData.username = username
     return recoveredData as StreamerData
 }
 
-profileRouter.get('/users/:username', async (req, res) => {
+profileRouter.get('/users/:username', async (req, res, next) => {
     const username = req.params.username
     const streamlink = new Streamlink(`https://twitch.tv/${username}`, {})
     isLive = await streamlink.isLive()
-    const qualities = await streamlink.getQualities()
-
 
     let streamerData = await getStreamerData(username)
-    if(streamerData.stream)
-        streamerData.stream.qualities = qualities
+        .catch(next)
 
+    if(streamerData && streamerData.stream && isLive)
+        streamerData.stream.qualities = await streamlink.getQualities()
+    
+    if(streamerData) {
+        streamerData.isLive = isLive
         res.send(streamerData)
+    }
 })
 
 export default profileRouter

server/util/logger.ts

@@ -0,0 +1,40 @@
+import { randomUUID } from 'crypto'
+import { createLogger, format, transports } from 'winston'
+import { NextFunction, Request, Response } from 'express'
+import util from 'util'
+
+const logLevels = {
+  fatal: 0,
+  error: 1,
+  warn: 2,
+  info: 3,
+  debug: 4,
+  trace: 5,
+};
+
+let currentUUID: string;
+const addReqId = format((info) => {
+  info.reqId = currentUUID
+  return info
+})
+
+export const logger = createLogger({
+    format: format.combine(addReqId(), format.timestamp(), format.json()),
+    transports: [new transports.Console({}), new transports.File({ filename: './serverLog.log' })],
+    levels: logLevels
+  });
+
+export const errorHandler = (err: Error, req: Request, res: Response, next: NextFunction) => {
+    if (res.headersSent) {
+      return next(err)
+    }
+
+    currentUUID = res.locals.uuid
+    res.status(500).send({ status: 'error', message: err.message, code: res.locals.uuid })
+    logger.warn(err.message)
+  }
+
+export const uuid = (req: Request, res: Response, next: NextFunction) => {
+  res.locals.uuid = randomUUID()
+  next(res)
+}