Add updates from PR #31 to TODO.md

Author: colin-codegen[bot]

TODO.md

@@ -4,3 +4,12 @@
   - Right now, there is no FROM field being sent from the ui.
 - Make the server/chat/gpt3 code chat history generic, don't assume a phone number
 - Add a way to reset the chat history from the ui chat client
+- Modify [src/pages/api/chat.ts](https://github.com/promptable/chat-bot-starter/blob/main/src/pages/api/chat.ts)
+  - Import `getReply` function from `src/server/chat/gpt3`
+  - Use `getReply` function with arguments `userId` and `messageText` to get the reply
+  - If there is no previous message, return the reply JSON
+  - If there is a previous message, determine the empathy of the message
+- Modify [src/server/chat/gpt3.ts](https://github.com/promptable/chat-bot-starter/blob/main/src/server/chat/gpt3.ts)
+  - Write related functions for handling chat history management and response generation
+  - Define the main `getReply` function for generating responses given a userId and message
+