From 22ef3cbebcff3bc9956387860c28b38d71ce8b72 Mon Sep 17 00:00:00 2001
From: Trevor Buckner <calculuschild@gmail.com>
Date: Fri, 11 Jul 2025 16:55:30 +0000
Subject: [PATCH] Gzip brew object when sending for save update

---
 client/homebrew/pages/editPage/editPage.jsx |  9 ++++++++-
 package-lock.json                           |  6 ++++++
 package.json                                |  1 +
 server/homebrew.api.js                      | 14 +++++++++++++-
 4 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/client/homebrew/pages/editPage/editPage.jsx b/client/homebrew/pages/editPage/editPage.jsx
index 48d4a0b13..b464e63b6 100644
--- a/client/homebrew/pages/editPage/editPage.jsx
+++ b/client/homebrew/pages/editPage/editPage.jsx
@@ -5,6 +5,7 @@ const _ = require('lodash');
 const createClass = require('create-react-class');
 import {makePatches, applyPatches, stringifyPatches, parsePatches} from '@sanity/diff-match-patch';
 import { md5 } from 'hash-wasm';
+import { gzipSync, strToU8 } from 'fflate';
 
 import request from '../../utils/request-middleware.js';
 const { Meta } = require('vitreum/headtags');
@@ -260,7 +261,7 @@ const EditPage = createClass({
 		await versionHistoryGarbageCollection().catch(console.error);
 
 		//Prepare content to send to server
-		const brew          = { ...brewState };
+		let brew          = { ...brewState };
 		brew.text           = brew.text.normalize('NFC');
 		this.savedBrew.text = this.savedBrew.text.normalize('NFC');
 		brew.pageCount      = ((brew.renderer=='legacy' ? brew.text.match(/\\page/g) : brew.text.match(/^\\page$/gm)) || []).length + 1;
@@ -269,10 +270,16 @@ const EditPage = createClass({
 		//brew.text           = undefined; - Temporary parallel path
 		brew.textBin        = undefined;
 
+		brew = JSON.stringify(brew);
+		brew = strToU8(brew);
+		brew = gzipSync(brew);
+
 		const transfer = this.state.saveGoogle == _.isNil(this.state.brew.googleId);
 		const params = `${transfer ? `?${this.state.saveGoogle ? 'saveToGoogle' : 'removeFromGoogle'}=true` : ''}`;
 		const res = await request
 			.put(`/api/update/${brew.editId}${params}`)
+			.set('Content-Encoding', 'gzip')
+			.set('Content-Type', 'application/json')
 			.send(brew)
 			.catch((err)=>{
 				console.log('Error Updating Local Brew');
diff --git a/package-lock.json b/package-lock.json
index 8fa722ac7..c6305a529 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,6 +30,7 @@
         "express": "^5.1.0",
         "express-async-handler": "^1.2.0",
         "express-static-gzip": "3.0.0",
+        "fflate": "^0.8.2",
         "fs-extra": "11.3.0",
         "hash-wasm": "^4.12.0",
         "idb-keyval": "^6.2.2",
@@ -6650,6 +6651,11 @@
         "node": "^12.20 || >= 14.13"
       }
     },
+    "node_modules/fflate": {
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/fflate/-/fflate-0.8.2.tgz",
+      "integrity": "sha512-cPJU47OaAoCbg0pBvzsgpTPhmhqI5eJjh/JIu8tPj5q+T7iLvW/JAYUqmE7KOB4R1ZyEhzBaIQpQpardBF5z8A=="
+    },
     "node_modules/file-entry-cache": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-8.0.0.tgz",
diff --git a/package.json b/package.json
index 71e892058..cb6ff04a4 100644
--- a/package.json
+++ b/package.json
@@ -103,6 +103,7 @@
     "express": "^5.1.0",
     "express-async-handler": "^1.2.0",
     "express-static-gzip": "3.0.0",
+    "fflate": "^0.8.2",
     "fs-extra": "11.3.0",
     "hash-wasm": "^4.12.0",
     "idb-keyval": "^6.2.2",
diff --git a/server/homebrew.api.js b/server/homebrew.api.js
index b39f3575f..fb9c78ac8 100644
--- a/server/homebrew.api.js
+++ b/server/homebrew.api.js
@@ -24,6 +24,18 @@ const isStaticTheme = (renderer, themeName)=>{
 	return Themes[renderer]?.[themeName] !== undefined;
 };
 
+const uncompressBrew = (input, encoding)=> {
+	try {
+		const jsonStr = encoding === 'gzip'
+		? zlib.gunzipSync(input).toString('utf-8')
+		: input.toString('utf-8');
+
+	return JSON.parse(jsonStr);
+	} catch (err) {
+	throw new Error('Failed to parse JSON: ' + err.message);
+	}
+}
+
 // const getTopBrews = (cb) => {
 // 	HomebrewModel.find().sort({ views: -1 }).limit(5).exec(function(err, brews) {
 // 		cb(brews);
@@ -337,7 +349,7 @@ const api = {
 	},
 	updateBrew : async (req, res)=>{
 		// Initialize brew from request and body, destructure query params, and set the initial value for the after-save method
-		const brewFromClient = api.excludePropsFromUpdate(req.body);
+		const brewFromClient = api.excludePropsFromUpdate(uncompressBrew(req.body, req.headers['content-encoding']));
 		const brewFromServer = req.brew;
 		splitTextStyleAndMetadata(brewFromServer);