Merge pull request #1 from dlmarques/develop

MVP 1

Author: dlmarques

LICENSE

@@ -0,0 +1 @@
+This project is licensed under the GNU AGPL v3—see LICENSE for details

README.md

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+import OpenAI from "openai";
+require("dotenv").config();
+
+const openai = new OpenAI({
+  apiKey: process.env.OPEN_AI_API_KEY,
+});
+
+export const getModelResponse = (previousTopics?: string[]) => {
+  let refinedPrompt;
+
+  if (previousTopics) {
+    const joinedPreviousTopics = previousTopics.join(", ");
+    refinedPrompt = `Explain a programming/computer science concept that has not been previously provided. Previously provided concepts: ${joinedPreviousTopics}. Return only a valid JSON object with the following structure: { 'concept': '', 'definition': '', 'realWorldAnalogy': '', 'examples': [{ 'language': '', 'code': '' }], 'quiz': {'question': '', 'answers': [{'id': '', 'content': ''}], rightAnswer: '' } }, the entire explanation must be between 4 and 5 minutes read, and you have to provide examples in following languages: JavaScript, Python, Java, C#, C++, TypeScript, PHP.Do not include any additional text before or after the JSON. The concept should be unique and not in the previously provided list.`;
+  } else {
+    refinedPrompt =
+      "Explain a programming/computer science concept. Return only a valid JSON object with the following structure: { 'concept': '', 'definition': '', 'realWorldAnalogy': '', 'examples': [{ 'language': '', 'code': '' }], 'quiz': {'question': '', 'answers': [{'id': '', 'content': ''}], rightAnswerId: '' } }, the entire explanation cannot exceed 5 minutes read. Do not include any additional text before or after the JSON. The concept should be unique and not in the previously provided list.";
+  }
+
+  try {
+    const completion = openai.chat.completions.create({
+      model: "gpt-4o-mini",
+      store: true,
+      messages: [{ role: "user", content: refinedPrompt }],
+    });
+
+    const response = completion.then((result) => {
+      return result.choices[0].message.content;
+    });
+    return response;
+  } catch (error) {
+    console.error(error);
+    return null;
+  }
+};

controllers/model.controller.ts

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+import { Request, Response } from "express";
+import { getModelResponse } from "./model.controller";
+import schedule from "node-schedule";
+import { getPreviousTopics } from "../utils/getPreviousTopics";
+import { insertNewTopic } from "../utils/insertNewTopic";
+import { client } from "../utils/dbConnect";
+import { Topic } from "../types/Topic";
+import { isToday } from "../utils/isToday";
+
+export const requestAndSaveNewTopic = async () => {
+  const pastTopics = await getPreviousTopics();
+
+  const modelResponse = await getModelResponse(pastTopics);
+
+  if (modelResponse) {
+    const parsedResponse = JSON.parse(modelResponse);
+
+    const insertTopicResult = await insertNewTopic({
+      ...parsedResponse,
+      date: new Date(),
+    });
+
+    if (insertTopicResult) {
+      console.log("New topic generated and inserted sucessfully");
+    }
+  } else {
+    throw new Error("Something went wrong on model requisition");
+  }
+};
+
+schedule.scheduleJob("0 0 * * *", requestAndSaveNewTopic);
+
+export const getTopic = async (req: Request, res: Response) => {
+  const database = client.db("topics");
+
+  const topic = database.collection<Topic>("topic");
+
+  const result = topic.find().toArray();
+
+  const _result = await result;
+
+  const lastTopic = _result.find((topic) => {
+    if (isToday(topic.date)) return topic;
+  });
+
+  if (lastTopic) {
+    res.status(200).send({ success: true, content: lastTopic });
+  } else {
+    requestAndSaveNewTopic();
+  }
+};

controllers/topics.controller.ts

@@ -1,15 +1,29 @@
-import express, { Express, Request, Response, Application } from "express";
+// Copyright (c) 2025 Daniel Marques
+// Licensed under the GNU AGPL v3. See LICENSE.
+
+import express, { Application } from "express";
 import dotenv from "dotenv";
+import topicRoutes from "./routes/topics";
+import { runDB } from "./utils/dbConnect";
+import cors from "cors";
 
-//For env File
 dotenv.config();
 
 const app: Application = express();
 const port = process.env.PORT || 8000;
 
-/* app.get("/", (req: Request, res: Response) => {
-  res.send("Welcome to Express & TypeScript Server");
-}); */
+app.use(
+  cors({
+    origin: ["http://localhost:3000"],
+    methods: ["GET", "POST"],
+    allowedHeaders: ["Content-Type"],
+    credentials: true,
+  })
+);
+
+app.use("/topics", topicRoutes);
+
+runDB().catch(console.dir);
 
 app.listen(port, () => {
   console.log(`Server is Fire at https://localhost:${port}`);