Adding routes & linkedin auth

README.md

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+# CVGen Project
+
+## Overview
+CVGen is a Node.js application that connects to the LinkedIn API to retrieve user profile information. The application is designed to display this information on a blank page without the need for HTML or CSS.
+
+## Project Structure
+```
+cvgen
+├── controllers
+│   └── linkedin.js        # Handles LinkedIn API connection and user profile retrieval
+├── routes
+│   ├── api.routes.js      # Defines API routes for LinkedIn authentication and data fetching
+│   └── front.routes.js     # Defines front-end routes (currently not utilized)
+├── views                   # Currently empty, not needed for this project
+├── public
+│   └── img                # Contains images (not utilized in this project)
+├── app.js                 # Entry point of the application, sets up server and routes
+├── package.json           # Configuration file for npm, lists project dependencies
+└── README.md              # Documentation for the project
+```
+
+## Setup Instructions
+1. Clone the repository to your local machine.
+2. Navigate to the project directory.
+3. Run `npm install` to install the required dependencies.
+4. Configure your LinkedIn API credentials in the `linkedin.js` controller.
+5. Start the application by running `node app.js`.
+
+## Usage
+- The application will connect to the LinkedIn API and retrieve user profile information.
+- The retrieved information will be displayed on a blank page.
+
+## Dependencies
+- Express: A web framework for Node.js.
+- LinkedIn API libraries: For connecting and interacting with the LinkedIn API.
+
+## License
+This project is licensed under the MIT License.

app.js

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+const express = require("express");
+const bodyParser = require("body-parser");
+const apiRoutes = require("./routes/api.routes");
+const frontRoutes = require("./routes/front.routes");
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+// Middleware
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+
+// Routes
+app.use("/api", apiRoutes);
+app.use("/", frontRoutes);
+
+// Start the server
+app.listen(PORT, () => {
+  console.log(`Server is running on http://localhost:${PORT}`);
+});

controllers/linkedin.js

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+// filepath: c:\Users\amaizy\Desktop\cvgen\controllers\linkedin.js
+
+const axios = require("axios");
+const querystring = require("querystring");
+
+const clientId = "780w7gsy8eysmj";
+const clientSecret = "WPL_AP1.w6OTTkAndAdT3PYF.UZEcwQ==";
+const redirectUri = "http://localhost:3000/api/auth/linkedin/callback";
+const scope = "r_liteprofile r_emailaddress";
+
+let accessToken = "";
+
+const authenticateUser = (req, res) => {
+  const authUrl = `https://www.linkedin.com/oauth/v2/authorization?${querystring.stringify(
+    {
+      response_type: "code",
+      client_id: clientId,
+      redirect_uri: redirectUri,
+      scope: scope,
+    }
+  )}`;
+  res.redirect(authUrl);
+};
+
+const callback = async (req, res) => {
+  const { code } = req.query;
+
+  try {
+    const tokenResponse = await axios.post(
+      "https://www.linkedin.com/oauth/v2/accessToken",
+      querystring.stringify({
+        grant_type: "authorization_code",
+        code: code,
+        redirect_uri: redirectUri,
+        client_id: clientId,
+        client_secret: clientSecret,
+      })
+    );
+
+    accessToken = tokenResponse.data.access_token;
+    res.send(
+      "Authentication successful! You can now retrieve your profile information."
+    );
+  } catch (error) {
+    res.status(500).send("Error retrieving access token.");
+  }
+};
+
+const getUserProfile = async (req, res) => {
+  try {
+    const profileResponse = await axios.get("https://api.linkedin.com/v2/me", {
+      headers: {
+        Authorization: `Bearer ${accessToken}`,
+      },
+    });
+    res.json(profileResponse.data);
+  } catch (error) {
+    res.status(500).send("Error retrieving user profile.");
+  }
+};
+
+module.exports = {
+  authenticateUser,
+  callback,
+  getUserProfile,
+};

package.json

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+{
+  "name": "cvgen",
+  "version": "1.0.0",
+  "description": "A project to connect to the LinkedIn API and retrieve user profile information.",
+  "main": "app.js",
+  "scripts": {
+    "start": "node app.js"
+  },
+  "dependencies": {
+    "express": "^4.17.1",
+    "axios": "^0.21.1",
+    "dotenv": "^8.2.0"
+  },
+  "author": "",
+  "license": "ISC"
+}

routes/api.routes.js

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+// filepath: c:\Users\amaizy\Desktop\cvgen\routes\api.routes.js
+
+const express = require("express");
+const router = express.Router();
+const linkedinController = require("../controllers/linkedin");
+
+// Route for LinkedIn authentication
+router.get("/auth/linkedin", linkedinController.authenticate);
+
+// Callback route for LinkedIn OAuth2
+router.get("/auth/linkedin/callback", linkedinController.callback);
+
+// Route for fetching user profile information
+router.get("/profile", linkedinController.getProfile);
+
+module.exports = router;

routes/front.routes.js

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+// filepath: c:\Users\amaizy\Desktop\cvgen\routes\front.routes.js
+// This file is intentionally left blank.