Chat Application with History and Audio Download

I'll create a chat application using the AI SDK with OpenAI that includes message history and a button to download audio for each assistant response. This will use the Next.js App Router and text-to-speech functionality.

How It Works

This chat application includes:

1. Chat Interface: A clean UI with separate styling for user and assistant messages 1.
2. Message History: All messages are stored and displayed in the chat window, with automatic scrolling to the latest message 23.
3. Audio Download: Each assistant response includes a download button that converts the text to speech using OpenAI's TTS API and allows the user to download it as an MP3 file .
4. Real-time Streaming: The chat uses the AI SDK's streaming capabilities to show responses as they're generated 24.

Key Components

• Chat API Route: Uses the AI SDK with OpenAI to generate responses 5.
• Text-to-Speech API Route: Converts text to audio using OpenAI's TTS API.
• UI Components: Uses shadcn/ui for a modern, responsive design.

Setup Instructions

1. Make sure you have an OpenAI API key set as an environment variable:

ChatGPT-like Interface Design

Here's a clean, ChatGPT-like interface design without any functionality. This focuses purely on the visual design and layout similar to ChatGPT.

Design Features

This ChatGPT-like interface includes:

1. Sidebar Navigation:

   • New chat button at the top
   • List of previous chats
   • User account and settings at the bottom
   • Hidden on mobile for a responsive design

2. Chat Interface:

   • Clean message bubbles with distinct styling for user and assistant messages
   • Assistant messages include a bot avatar icon
   • User messages include a user avatar icon
   • Support for formatted text with line breaks

3. Input Area:

   • Fixed at the bottom of the screen
   • Send button positioned inside the input field
   • Disclaimer text below the input (similar to ChatGPT)

4. Responsive Design:

   • Sidebar collapses on mobile
   • Mobile header with menu button appears on smaller screens
   • Messages adapt to different screen sizes

This is purely a visual design with no actual chat functionality, as requested. The layout and styling closely resemble the ChatGPT interface.