rewrite data collector

maybe it will work

datacollector.js

@@ -1,42 +0,0 @@
-var os = require('os');
-var zlib = require('zlib');
-
-// WebSocket message data collector. Returns a function for inputting websocket messages.
-// Collects inputted messages to a file and gzips them every time it reaches 8mb,
-// and sends it to the output callback function.
-// For recording websocket data to a discord channel.
-module.exports = function createWSMessageCollector(output) { // output func must be async
-    var filepath = os.tmpdir() + "/" + Math.random().toString(36).substring(2);
-    var size = 0;
-    var startDate = new Date();
-
-    // gzip the data & send to output callback
-    async function save(callback){
-        fs.readFile(filepath, (err, file) => {
-            if (err) return handleError(err);
-            zlib.gzip(file, async function(err, data){
-                if (err) return handleError(err);
-                var thisStartDate = startDate, thisEndDate = new Date();
-                fs.writeFileSync(filepath, '');
-                size = 0;
-                startDate = new Date();
-                await output(data, thisStartDate, thisEndDate);
-                if (callback) callback();
-            });
-        });
-    }
-
-    // save on exit
-    exitHook(callback => {
-        save(()=>callback());
-    });
-
-    return function input(message) { // input for websocket messages
-        message = message.data || message;
-        if (message instanceof ArrayBuffer) message = Buffer.from(message).toString('base64');
-        var line = `${Date.now()} ${message}\n`;
-        size += line.length;
-        fs.appendFileSync(filepath, line);
-        if (size > 8000000) {save(); size = 0;}
-    };
-}

ddpbridge.js

@@ -1,14 +1,14 @@
 var WebSocket = require('ws');
 var Discord = require('discord.js');
-var createWsMessageCollector = require('./datacollector');
+var WebSocketMessageCollector = require('./lib/datacollector');
 
-var webhook = new Discord.WebhookClient({url: config.webhooks.ddp, allowedMentions: {parse: []}});
+var webhook = new Discord.WebhookClient({url: config.webhooks.ddp}, {allowedMentions: {parse: []}});
 
 var ws;
 var wasConnected = false;
 //var myId;
 
-var collectWsMessage = createWsMessageCollector(async function(data, startDate, endDate){
+var wsc = new WebSocketMessageCollector(async function(data, startDate, endDate){
     await webhook.send({files:[{
         attachment: data,
         name: `daydun piano main raw data recording from ${startDate.toISOString()} to ${endDate.toISOString()} .txt.gz`
@@ -22,7 +22,7 @@ var collectWsMessage = createWsMessageCollector(async function(data, startDate,
         wasConnected = true;
     });
     ws.on("message", message => {
-        collectWsMessage(message);
+        wsc.collect(message);
         if (typeof message != 'string') return;
         var transmission = JSON.parse(message);
         if (transmission.type == 'chat') {

lib/datacollector.js

@@ -0,0 +1,28 @@
+var gzip = require("util").promisify(require("zlib").gzip);
+
+module.exports = class WebSocketMessageCollector {
+    constructor(dispatchFunction) {
+        this.maxSize = 8000000;
+        this.data = "";
+        this.startDate = new Date();
+        this.dispatchFunction = dispatchFunction;
+        exitHook(cb => {
+            this.dispatchFunction().then(cb);
+        });
+    }
+
+    collect(message) {
+        message = message.data || message;
+        if (message instanceof ArrayBuffer) message = Buffer.from(message).toString('base64');
+        var line = `${Date.now()} ${message}\n`;
+        this.data += line;
+        if (this.data.length > this.maxSize) this.package();
+    }
+
+    async package() {
+        var data = this.data, startDate = this.startDate, endDate = new Date();
+        this.data = "", this.startDate = new Date();
+        data = await gzip(data);
+        await this.dispatchFunction(data, startDate, endDate);
+    }
+}

main.js

@@ -13,7 +13,7 @@ global.dClient = new Discord.Client({
 
 // error handling
 {
-	let webhook = new Discord.WebhookClient({url: config.webhooks.error, allowedMentions: {parse: []}});
+	let webhook = new Discord.WebhookClient({url: config.webhooks.error}, {allowedMentions: {parse: []}});
 	global.handleError = function logError(error, title) {
 		let msg = error && (error.stack || error.message || error);
 		console.error(title + ':\n' + msg);

misc.js

@@ -1,6 +1,6 @@
 // join/leave
 (async function(){
-    var webhook = new Discord.WebhookClient({url: config.webhooks.welcome, allowedMentions: {parse: []}});
+    var webhook = new Discord.WebhookClient({url: config.webhooks.welcome}, {allowedMentions: {parse: []}});
     dClient.on('guildMemberAdd', async member => {
         if (member.guild.id != config.guildID) return;
         let username = member.user.username.toLowerCase().includes('clyde') ? member.user.username.replace(/C/g,'Q').replace(/c/g,'q') : member.user.username;

mppbridger.js

@@ -1,4 +1,5 @@
 var Client = require('./lib/Client.js');
+var WebSocketMessageCollector = require("./lib/datacollector");
 
 global.createMPPbridge = async function createMPPbridge({room, channel, uri}) {
 	channel = dClient.channels.resolve(channel);
@@ -190,14 +191,12 @@ global.createMPPbridge = async function createMPPbridge({room, channel, uri}) {
 	
     
 	// addons
-	{
-		// record raw data
-		let createWSMessageCollector = require("./datacollector")
-		gClient.on("message", createWSMessageCollector(async function(data, startDate, endDate){
-			var attachmentName = `${uri} ${room} raw data recording from ${startDate.toISOString()} to ${endDate.toISOString()} .txt.gz`;
-			await channel.send(new Discord.MessageAttachment(data, attachmentName));
-		}));
-	}
+	var wsc = new WebSocketMessageCollector(async function(data, startDate, endDate) {
+		var attachmentName = `${uri} ${room} raw data recording from ${startDate.toISOString()} to ${endDate.toISOString()} .txt.gz`;
+		await channel.send(new Discord.MessageAttachment(data, attachmentName));
+	});
+	gClient.on("message", wsc.collect.bind(wsc));
+	
 
 	return gClient;
 };