From 82aec5475993f4023ec15f84be36021c1fa0d41b Mon Sep 17 00:00:00 2001
From: michaelschal <35957947-michaelschal@users.noreply.replit.com>
Date: Fri, 21 Nov 2025 14:39:57 +0000
Subject: [PATCH] Add full emoji rendering support for story posts

Implement backend service for converting emojis to images and frontend component for displaying them, ensuring consistent rendering across previews and published stories.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Event-Id: 33403db6-05eb-4e2b-9d54-1aea2f9fac5b
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/vfGybfs
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 replit.md | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/replit.md b/replit.md
index 5f7ef7a..edad4b8 100644
--- a/replit.md
+++ b/replit.md
@@ -9,13 +9,19 @@ Preferred communication style: Simple, everyday language.
 ## Recent Changes
 
 ### November 21, 2025
-- **Story Text Rendering with Emoji Support**: Implemented robust emoji rendering in Instagram/Facebook stories using Twemoji (Twitter's emoji library). Previous implementation removed all emojis due to canvas rendering limitations. New solution:
+- **Story Text Rendering with Emoji Support (Backend & Frontend)**: Implemented complete emoji rendering pipeline for Instagram/Facebook stories using Twemoji:
+  - **Backend Implementation** (`server/services/emojiRenderer.ts`, `server/services/imageProcessor.ts`):
+    - Created `emojiRenderer` service that converts text emojis to high-quality PNG images from Twemoji CDN
+    - Smart text wrapping handles long emoji sequences (e.g., "🎉🎉🎉🎉🎉") by breaking them into chunks that fit within canvas bounds
+    - In-memory caching of emoji images reduces CDN requests and improves performance
+    - Grapheme-aware breaking uses `Array.from()` for proper Unicode grapheme splitting
+  - **Frontend Preview Implementation** (`client/src/lib/emojiUtils.ts`, `client/src/components/emoji-text.tsx`):
+    - Added `twemoji` package for client-side emoji parsing
+    - Created `EmojiText` React component that renders emojis as Twemoji images in preview modal
+    - Ensures preview modal matches actual published story appearance (both use Twemoji CDN images)
+    - Emoji size dynamically scales with text font size
   - **Hashtag Removal**: Changed from removing emojis to removing hashtags (`#tag`) for cleaner story text while preserving emojis for engagement
-  - **Twemoji Integration**: Created `emojiRenderer` service that converts text emojis to high-quality PNG images from Twemoji CDN
-  - **Smart Text Wrapping**: Enhanced text wrapping to handle long emoji sequences (e.g., "🎉🎉🎉🎉🎉") by breaking them into chunks that fit within canvas bounds
-  - **Emoji Caching**: Implements in-memory caching of emoji images to reduce CDN requests and improve performance
-  - **Grapheme-Aware Breaking**: Uses `Array.from()` for proper Unicode grapheme splitting, ensuring multi-codepoint emojis aren't broken incorrectly
-  - Files modified: `shared/emoji.ts`, `server/services/emojiRenderer.ts`, `server/services/imageProcessor.ts`, `client/src/components/preview-modal.tsx`
+  - Files modified: `shared/emoji.ts`, `server/services/emojiRenderer.ts`, `server/services/imageProcessor.ts`, `client/src/lib/emojiUtils.ts`, `client/src/components/emoji-text.tsx`, `client/src/components/preview-modal.tsx`
 
 ### November 18, 2025
 - **Facebook Video Codec Compatibility Fix**: Fixed issue where MP4 videos uploaded to Facebook would not play correctly due to codec incompatibility. Facebook requires strict video format: H.264 video codec, AAC audio codec, and MP4 container. Solution: Added automatic video transcoding via Cloudinary transformations. When publishing a video to Facebook, the system now transforms the Cloudinary URL to include `vc_h264,ac_aac,f_mp4,q_auto` parameters, ensuring all videos are automatically re-encoded to Facebook-compatible format before publication. The getFacebookCompatibleVideoUrl() method detects Cloudinary video URLs and applies the necessary transformations transparently. Non-Cloudinary URLs are passed through unchanged with a warning. This ensures reliable video playback on Facebook without requiring users to manually re-encode their videos. Files modified: `server/services/facebook.ts`.