From 637cd9b7047b4d5ca80b325d25dd09d7fc5ce459 Mon Sep 17 00:00:00 2001 From: Angelina Mkrtychyan Date: Mon, 14 Jul 2025 16:49:43 -0700 Subject: [PATCH 1/4] llm frontend UI chat POC --- webapp/src/editortoolbar.tsx | 2 + webapp/src/llmbutton.tsx | 96 ++++++++++++++++++++++++++++++++++++ 2 files changed, 98 insertions(+) create mode 100644 webapp/src/llmbutton.tsx diff --git a/webapp/src/editortoolbar.tsx b/webapp/src/editortoolbar.tsx index 35045b7d41..eba8439a62 100644 --- a/webapp/src/editortoolbar.tsx +++ b/webapp/src/editortoolbar.tsx @@ -9,6 +9,7 @@ import * as identity from "./identity"; import { ProjectView } from "./app"; import { userPrefersDownloadFlagSet } from "./webusb"; import { dialogAsync, hideDialog } from "./core"; +import { LLMChat } from "./llmbutton"; import ISettingsProps = pxt.editor.ISettingsProps; import SimState = pxt.editor.SimState; @@ -462,6 +463,7 @@ export class EditorToolbar extends data.Component } + ; } } diff --git a/webapp/src/llmbutton.tsx b/webapp/src/llmbutton.tsx new file mode 100644 index 0000000000..56c22b45ea --- /dev/null +++ b/webapp/src/llmbutton.tsx @@ -0,0 +1,96 @@ +import * as React from "react"; + +export const LLMChat: React.FC = () => { + const [isOpen, setIsOpen] = React.useState(false); + const [input, setInput] = React.useState(""); + const [messages, setMessages] = React.useState([]); + + const handleToggle = () => setIsOpen(!isOpen); + + const handleSend = () => { + if (!input.trim()) return; + const newMessages = [...messages, `You: ${input}`, `LLM: ${input}`]; + setMessages(newMessages); + setInput(""); + }; + + return ( + <> + {/* Floating Button */} + + + {/* Chat Popup */} + {isOpen && ( +
+ {/* Chat Header */} +
+ Ask a Question +
+ + {/* Chat Messages */} +
+ {messages.map((msg, index) => ( +
{msg}
+ ))} +
+ + {/* Input Area */} +
+ setInput(e.target.value)} + onKeyDown={(e) => e.key === "Enter" && handleSend()} + style={{ width: "100%", padding: "5px", fontSize: "14px" }} + placeholder="Ask your question..." + /> +
+
+ )} + + ); +}; From 0709452bc08835402edbde8645a8abffa8c33c1c Mon Sep 17 00:00:00 2001 From: Angelina Mkrtychyan Date: Sat, 19 Jul 2025 19:18:34 -0700 Subject: [PATCH 2/4] llm backend poc --- llm-backend-poc/index.js | 38 +++++++++++++++++++++++ llm-backend-poc/package-lock.json | 50 +++++++++++++++++++++++++++++++ llm-backend-poc/package.json | 16 ++++++++++ 3 files changed, 104 insertions(+) create mode 100644 llm-backend-poc/index.js create mode 100644 llm-backend-poc/package-lock.json create mode 100644 llm-backend-poc/package.json diff --git a/llm-backend-poc/index.js b/llm-backend-poc/index.js new file mode 100644 index 0000000000..ce921ff410 --- /dev/null +++ b/llm-backend-poc/index.js @@ -0,0 +1,38 @@ +require('dotenv').config(); +const readline = require('readline'); +const { OpenAI } = require('openai'); + +const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY }); + +const rl = readline.createInterface({ + input: process.stdin, + output: process.stdout +}); + +const messages = [ + { role: "system", content: "You only answer questions related to programming, software development, or your own capabilities. If a user asks about anything else (like politics, personal opinions, religion, etc), politely decline and redirect them to ask about code or AI-related questions." } +]; + +async function askQuestion() { + rl.question("You: ", async (input) => { + messages.push({ role: "user", content: input }); + + try { + const completion = await openai.chat.completions.create({ + model: "gpt-4.1-mini", + messages: messages + }); + + const reply = completion.choices[0].message.content; + console.log("AI:", reply); + messages.push({ role: "assistant", content: reply }); + + askQuestion(); // Loop + } catch (err) { + console.error("Error:", err); + rl.close(); + } + }); +} + +askQuestion(); diff --git a/llm-backend-poc/package-lock.json b/llm-backend-poc/package-lock.json new file mode 100644 index 0000000000..9fa35ce9f7 --- /dev/null +++ b/llm-backend-poc/package-lock.json @@ -0,0 +1,50 @@ +{ + "name": "llm-backend-poc", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "llm-backend-poc", + "version": "1.0.0", + "license": "ISC", + "dependencies": { + "dotenv": "^17.2.0", + "openai": "^5.10.1" + } + }, + "node_modules/dotenv": { + "version": "17.2.0", + "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.2.0.tgz", + "integrity": "sha512-Q4sgBT60gzd0BB0lSyYD3xM4YxrXA9y4uBDof1JNYGzOXrQdQ6yX+7XIAqoFOGQFOTK1D3Hts5OllpxMDZFONQ==", + "license": "BSD-2-Clause", + "engines": { + "node": ">=12" + }, + "funding": { + "url": "https://dotenvx.com" + } + }, + "node_modules/openai": { + "version": "5.10.1", + "resolved": "https://registry.npmjs.org/openai/-/openai-5.10.1.tgz", + "integrity": "sha512-fq6xVfv1/gpLbsj8fArEt3b6B9jBxdhAK+VJ+bDvbUvNd+KTLlA3bnDeYZaBsGH9LUhJ1M1yXfp9sEyBLMx6eA==", + "license": "Apache-2.0", + "bin": { + "openai": "bin/cli" + }, + "peerDependencies": { + "ws": "^8.18.0", + "zod": "^3.23.8" + }, + "peerDependenciesMeta": { + "ws": { + "optional": true + }, + "zod": { + "optional": true + } + } + } + } +} diff --git a/llm-backend-poc/package.json b/llm-backend-poc/package.json new file mode 100644 index 0000000000..e198e1e835 --- /dev/null +++ b/llm-backend-poc/package.json @@ -0,0 +1,16 @@ +{ + "name": "llm-backend-poc", + "version": "1.0.0", + "main": "index.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "keywords": [], + "author": "", + "license": "ISC", + "description": "", + "dependencies": { + "dotenv": "^17.2.0", + "openai": "^5.10.1" + } +} From e560bb0c0bcedb89e7e708531878c1dcc4c9ee30 Mon Sep 17 00:00:00 2001 From: Angelina Mkrtychyan Date: Mon, 21 Jul 2025 19:10:14 -0700 Subject: [PATCH 3/4] integrated frontend and backend so that you can chat through the UI dialog. also updated dependencies in package.jsons --- .gitignore | 1 + llm-backend-poc/index.js | 79 +-- llm-backend-poc/package-lock.json | 833 ++++++++++++++++++++++++++++++ llm-backend-poc/package.json | 2 + package.json | 2 + webapp/src/llmbutton.tsx | 45 +- 6 files changed, 921 insertions(+), 41 deletions(-) diff --git a/.gitignore b/.gitignore index 449b939093..b32be16944 100644 --- a/.gitignore +++ b/.gitignore @@ -40,3 +40,4 @@ tests/ui-test/chromedriver.exe tests/ui-test/screenshot/** report.*.json *.tsbuildinfo +.env \ No newline at end of file diff --git a/llm-backend-poc/index.js b/llm-backend-poc/index.js index ce921ff410..fffbbb898a 100644 --- a/llm-backend-poc/index.js +++ b/llm-backend-poc/index.js @@ -1,38 +1,51 @@ -require('dotenv').config(); -const readline = require('readline'); -const { OpenAI } = require('openai'); +require("dotenv").config(); +const express = require("express"); // to build HTTP servers in Node.js +const cors = require("cors"); //middleware, allows the frontend (which runs on one port) to talk to the backend (which runs on a different port) +const bodyParser = require("body-parser"); // parses the JSON body of incoming HTTP requests so that data is accessible +const { OpenAI } = require("openai"); + +const app = express(); // creates instance of the express app, which will be the server +const port = 3001; const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY }); -const rl = readline.createInterface({ - input: process.stdin, - output: process.stdout +app.use(cors()); // Enable CORS so frontend can send requests to backend +app.use(bodyParser.json()); // tells express to automatically parse incoming request bodies as JSON. Without, req.body.message would be undefined + +// LLM's behavior +const systemMessage = { + role: "system", + content: + "You only answer questions related to programming, software development, or your own capabilities. If a user asks about anything else (like politics, personal opinions, religion, etc), politely decline and redirect them to ask about code or AI-related questions.", +}; + +// creates route to handle chat requests +app.post("/chat", async (req, res) => { + const userMessage = req.body.message; + if (!userMessage) return res.status(400).json({ error: "No message sent" }); + + // creates the message that will be sent to OpenAI. It contains the system role/context and the user input + const messages = [systemMessage, { role: "user", content: userMessage }]; + + // sends the message to OpenAI and waits for the response + try { + const completion = await openai.chat.completions.create({ + model: "gpt-4.1-mini", + messages, + }); + + const reply = completion.choices[0].message.content; // extracts the reply from OpenAI + return res.json({ reply }); // sends reply to frontend (in JSON format) + } + + // error handling + catch (err) { + console.error("Error from OpenAI:", err); + return res.status(500).json({ error: "Something went wrong" }); + } }); -const messages = [ - { role: "system", content: "You only answer questions related to programming, software development, or your own capabilities. If a user asks about anything else (like politics, personal opinions, religion, etc), politely decline and redirect them to ask about code or AI-related questions." } -]; - -async function askQuestion() { - rl.question("You: ", async (input) => { - messages.push({ role: "user", content: input }); - - try { - const completion = await openai.chat.completions.create({ - model: "gpt-4.1-mini", - messages: messages - }); - - const reply = completion.choices[0].message.content; - console.log("AI:", reply); - messages.push({ role: "assistant", content: reply }); - - askQuestion(); // Loop - } catch (err) { - console.error("Error:", err); - rl.close(); - } - }); -} - -askQuestion(); +// tells app to start listening on port 3001 +app.listen(port, () => { + console.log(`LLM backend server running on http://localhost:${port}`); +}); diff --git a/llm-backend-poc/package-lock.json b/llm-backend-poc/package-lock.json index 9fa35ce9f7..bd88aedb14 100644 --- a/llm-backend-poc/package-lock.json +++ 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e198e1e835..b27794ca5c 100644 --- a/llm-backend-poc/package.json +++ b/llm-backend-poc/package.json @@ -10,7 +10,9 @@ "license": "ISC", "description": "", "dependencies": { + "cors": "^2.8.5", "dotenv": "^17.2.0", + "express": "^5.1.0", "openai": "^5.10.1" } } diff --git a/package.json b/package.json index 64639f356f..cf2cd59a32 100644 --- a/package.json +++ b/package.json @@ -76,10 +76,12 @@ "browserify": "17.0.0", "chai": "^3.5.0", "chalk": "^4.1.2", + "cors": "^2.8.5", "cssnano": "4.1.10", "dashjs": "^4.4.0", "diff-match-patch": "^1.0.5", "dompurify": "2.0.17", + "express": "^5.1.0", "faye-websocket": "0.11.1", "karma": "6.4.4", "karma-chai": "0.1.0", diff --git a/webapp/src/llmbutton.tsx b/webapp/src/llmbutton.tsx index 56c22b45ea..2fe7e8dd5b 100644 --- a/webapp/src/llmbutton.tsx +++ b/webapp/src/llmbutton.tsx @@ -1,18 +1,47 @@ import * as React from "react"; +// declares LLMChat react component export const LLMChat: React.FC = () => { - const [isOpen, setIsOpen] = React.useState(false); - const [input, setInput] = React.useState(""); - const [messages, setMessages] = React.useState([]); + const [isOpen, setIsOpen] = React.useState(false); // controls whether the chat popup is open or closed + const [input, setInput] = React.useState(""); // stores the user's input in text box + const [messages, setMessages] = React.useState([]); // stores the chat history - const handleToggle = () => setIsOpen(!isOpen); + const handleToggle = () => setIsOpen(!isOpen); - const handleSend = () => { - if (!input.trim()) return; - const newMessages = [...messages, `You: ${input}`, `LLM: ${input}`]; - setMessages(newMessages); + // handles sending the user's message to the backend + const handleSend = async () => { + if (!input.trim()) return; // if the input is empty, do nothing + + // add the user's message to chat and clears input field + const userMessage = input; + setMessages((prev) => [...prev, `You: ${userMessage}`]); setInput(""); + + // sends the user's message to the backend and waits for the response + try { + const response = await fetch("http://localhost:3001/chat", { + method: "POST", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ message: userMessage }) + }); + + const data = await response.json(); // parses the JSON response from the backend + + // if there's a reply, show it, otherwise, show an error message + if (data.reply) { + setMessages((prev) => [...prev, `LLM: ${data.reply}`]); + } else { + setMessages((prev) => [...prev, "LLM: [Error getting reply]"]); + } + } + + // error handling + catch (err) { + console.error("Error:", err); + setMessages((prev) => [...prev, "LLM: [Network error]"]); + } }; + return ( <> From 19358dd21440508fc9d58393943e62ecdf50c95a Mon Sep 17 00:00:00 2001 From: Angelina Mkrtychyan Date: Mon, 21 Jul 2025 19:16:04 -0700 Subject: [PATCH 4/4] file name change to more meaningful one --- llm-backend-poc/{index.js => backend.js} | 0 1 file changed, 0 insertions(+), 0 deletions(-) rename llm-backend-poc/{index.js => backend.js} (100%) diff --git a/llm-backend-poc/index.js b/llm-backend-poc/backend.js similarity index 100% rename from llm-backend-poc/index.js rename to llm-backend-poc/backend.js