profile section: user data fetching | middleware

Author: MackSreeraj

README.md

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+please fork this repo
+
+please clone this repo
+
+git clone https://github.com/Forwardkite/Buyying.git
+
+note: clone this repo in the empty or home or Desktop dir
+
+make another branch and push new branches
+
+note: please clone the dir with the both frontend and backend dir

backend/.gitignore

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+node_modules/
+.env

backend/README.md

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+server: localhost:5000/
+
+route for batch creation form :- localhost:5000/admin
+
+____________________________________________________________________
+
+Example: suppose created Batch name was = testing 
+
+route for displaying created batch datas:- localhost:5000/admin/testing
+
+ie, localhost:5000/admin/created-batch-name
+
+______________________________________________________________________
+
+registration Page 
+
+localhost:5000/registration
+
+Login
+
+localhost:5000/login
+
+
+_______________________________________________________________________
+
+
+<h1>ACTIONS</h1>
+
+<h3>NODE</h3>
+
+machine must have node v15 or more 
+
+machine must have mongodb with a latest stable version
+
+machine must have to install dependencies:
+
+
+npm i randomatic bcrypt express-session express

backend/app.js

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+const createError = require("http-errors");
+const express = require("express");
+const path = require("path");
+const cookieParser = require("cookie-parser");
+const logger = require("morgan");
+// const session = require("express-session");
+const bcrypt = require("bcryptjs");
+const connectionDB = require("./config/connection");
+const cors = require("cors");
+const passport = require("./controllers/passport");
+
+const app = express();
+connectionDB();
+
+
+
+app.use(cors({
+  origin: ["http://localhost:3000"],
+  methods: ["POST", "GET", "DELETE"],
+  credentials: true
+}));
+
+/*_________________________________________VIEW ENGINE SETUP________________________________________*/
+
+app.set("views", path.join(__dirname, "views"));
+app.set("view engine", "hbs");
+
+/*____________________________________________________________________________________________________*/
+
+app.use(logger("dev"));
+app.use(express.json());
+app.use(express.urlencoded({ extended: false }));
+app.use(cookieParser());
+app.use(express.static(path.join(__dirname, "public")));
+app.use(passport.initialize());
+
+/*__________________________________________________*ADMIN_ROUTES*____________________________________________*/
+
+const adminRouter = require("./routes/admin");
+app.use("/admin", adminRouter);
+app.use("/uploads", express.static("uploads"));
+
+/*__________________________________________________*ROUTES*____________________________________________*/
+
+const indexRouter = require("./routes/index");
+const usersRouter = require("./routes/users");
+const registrationRoutes = require("./routes/registration");
+const productsRoutes = require("./routes/products");
+const loginRoutes = require("./routes/login");
+const dashboardRoutes = require("./routes/dashboard");
+const logoutRoute = require("./routes/logoutRoute")
+
+app.use("/", indexRouter);
+app.use("/registration", registrationRoutes);
+app.use("/logout",logoutRoute);
+app.use("/login", loginRoutes);
+app.use("/users", usersRouter);
+app.use("/products", productsRoutes);
+app.use("/dashboard", dashboardRoutes);
+// app.use('/api',routesMiddleware);
+
+/*_________________________________________________ERROR HANDLERS____________________________________________*/
+
+// catch 404 and forward to error handler
+app.use(function (req, res, next) {
+  next(createError(404));
+});
+
+// error handler
+app.use(function (err, req, res, next) {
+  // set locals, only providing error in development
+  res.locals.message = err.message;
+  res.locals.error = req.app.get("env") === "development" ? err : {};
+
+  // render the error page
+  res.status(err.status || 500);
+  res.render("error");
+});
+
+/*______________________________________________________________________________________________________________*/
+
+module.exports = app;

backend/bin/www

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+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var app = require('../app');
+var debug = require('debug')('backend:server');
+var http = require('http');
+
+/**
+ * Get port from environment and store in Express.
+ */
+
+var port = normalizePort(process.env.PORT || '5000');
+app.set('port', port);
+
+/**
+ * Create HTTP server.
+ */
+
+var server = http.createServer(app);
+
+/**
+ * Listen on provided port, on all network interfaces.
+ */
+
+server.listen(port);
+server.on('error', onError);
+server.on('listening', onListening);
+
+/**
+ * Normalize a port into a number, string, or false.
+ */
+
+function normalizePort(val) {
+  var port = parseInt(val, 10);
+
+  if (isNaN(port)) {
+    // named pipe
+    return val;
+  }
+
+  if (port >= 0) {
+    // port number
+    return port;
+  }
+
+  return false;
+}
+
+/**
+ * Event listener for HTTP server "error" event.
+ */
+
+function onError(error) {
+  if (error.syscall !== 'listen') {
+    throw error;
+  }
+
+  var bind = typeof port === 'string'
+    ? 'Pipe ' + port
+    : 'Port ' + port;
+
+  // handle specific listen errors with friendly messages
+  switch (error.code) {
+    case 'EACCES':
+      console.error(bind + ' requires elevated privileges');
+      process.exit(1);
+      break;
+    case 'EADDRINUSE':
+      console.error(bind + ' is already in use');
+      process.exit(1);
+      break;
+    default:
+      throw error;
+  }
+}
+
+/**
+ * Event listener for HTTP server "listening" event.
+ */
+
+function onListening() {
+  var addr = server.address();
+  var bind = typeof addr === 'string'
+    ? 'pipe ' + addr
+    : 'port ' + addr.port;
+  debug('Listening on ' + bind);
+}

backend/components/LotteryGenerator.js

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+const randomatic = require('randomatic');
+
+//_________Generate a random alphanumeric token of length 6________//
+
+function LotteryGenerator() {
+    const lottery = randomatic('A0', 6);
+    console.log('Random token:', lottery);
+    return lottery
+}
+
+module.exports = LotteryGenerator
+
+// const randomatic = require('randomatic');
+
+// // Generate a random alphanumeric token of length 6
+// function LotteryGenerator() {
+//     return randomatic('A0', 6);
+// }
+
+// module.exports = LotteryGenerator;

backend/config/connection.js

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+// const mongoose = require("mongoose");
+
+// const connectionDB = async () => {
+//   try {
+//     await mongoose.connect(
+//       process.env.MONGODB_URI,
+//       {}
+//     );
+
+//     console.log("MongoDB connected successfully!");
+//   } catch (error) {
+//     console.error("Error connecting to MongoDB:", error.message);
+//   }
+// };
+
+// module.exports = connectionDB;
+
+const mongoose = require("mongoose");
+require('dotenv').config(); // Load environment variables from .env file
+
+const connectionDB = async () => {
+  try {
+    await mongoose.connect(
+      process.env.MONGODB_URI, // Use environment variable for connection URL
+      {}
+    );
+
+    console.log("MongoDB connected successfully!");
+  } catch (error) {
+    console.error("Error connecting to MongoDB:", error.message);
+  }
+};
+
+module.exports = connectionDB;
+
+
+// 97fvTcy1zllzpUcY
+// I7nfqAXi6kTt518y
+// 0WnAhdaletmY6FAF
+// XORJNaCZ0pM63gJU
+// VDQ0UXJE8kPVFl8s
+//mongodb+srv://sreeraj:[email protected]/?retryWrites=true&w=majority//
+// mongodb+srv://sreerajmack7:[email protected]/?retryWrites=true&w=majority
+//mongodb+srv://abhinavshyjupc:[email protected]/?retryWrites=true&w=majority

backend/controllers/displaySlotData.js

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+
+// Import the ProductDB model
+const Slot = require('../models/slotDB');
+
+// Function to handle '/admin/view' route
+const displaySlotData = async (req, res) => {
+  try {
+    // Retrieve all products from the database
+    const slots = await Slot.find({});
+
+    // Send the retrieved products as a response
+    res.json(slots);
+  } catch (error) {
+    console.error("Error in Server:", error);
+    res.status(500).json({ error: "Internal Server Error" });
+  }
+};
+
+module.exports = {
+    displaySlotData
+};

backend/controllers/displayUserData.js

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+
+// Import the ProductDB model
+const User = require('../models/usersDB');
+
+// Function to handle '/admin/view' route
+const displayUserData = async (req, res) => {
+  try {
+    // Retrieve all products from the database
+    const UserData = await User.find({});
+
+    // Send the retrieved products as a response
+    res.json(UserData);
+  } catch (error) {
+    console.error("Error in Server:", error);
+    res.status(500).json({ error: "Internal Server Error" });
+  }
+};
+
+const displayUserDataById = async (req, res) => {
+    try {
+      const UserId = req.params.id;
+      const UserDataById = await User.findById(UserId);
+  
+      if (!UserDataById) {
+        return res.status(404).json({ error: 'Product not found' });
+      }
+  
+      res.json(UserDataById);
+    } catch (error) {
+      console.error(error);
+      res.status(500).json({ error: 'Internal Server Error' });
+    }
+  };
+
+module.exports = {
+    displayUserData,
+    displayUserDataById
+};

backend/controllers/exportController.js

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+// controllers/exportController.js
+
+const { ProductDB } = require('../models/productDB'); // Import your ProductDB model or relevant database logic
+
+const exportDataAsCSV = async (req, res) => {
+  try {
+    const purchases = await ProductDB.find({}, '-_id -__v');
+    if (purchases.length === 0) {
+      return res.status(404).json({ message: 'No data found' });
+    }
+
+    const csvFields = Object.keys(purchases[0].toJSON());
+    const csvData = [
+      csvFields.join(','),
+      ...purchases.map((purchase) =>
+        csvFields.map((field) => purchase[field]).join(',')
+      ),
+    ];
+    const csv = csvData.join('\n');
+
+    res.setHeader('Content-Type', 'text/csv');
+    res.setHeader('Content-Disposition', 'attachment; filename=purchase_data.csv');
+
+    res.status(200).send(csv);
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ message: 'Server Error' });
+  }
+};
+
+module.exports = {
+  exportDataAsCSV,
+};