Initial Version

server/utils/apiFeatures.js

@@ -0,0 +1,48 @@
+class APIFeatures {
+    constructor(query, queryStr) {
+        this.query = query;
+        this.queryStr = queryStr;
+    }
+
+    search() {
+        const keyword = this.queryStr.keyword
+            ? {
+                  name: {
+                      $regex: this.queryStr.keyword,
+                      $options: "i",
+                  },
+              }
+            : {};
+
+        this.query = this.query.find({ ...keyword });
+        return this;
+    }
+
+    filter() {
+        const queryCopy = { ...this.queryStr };
+
+        // Removing fields from the query
+        const removeFields = ["keyword", "limit", "page"];
+        removeFields.forEach((el) => delete queryCopy[el]);
+
+        // Advance filter for price, ratings etc
+        let queryStr = JSON.stringify(queryCopy);
+        queryStr = queryStr.replace(
+            /\b(gt|gte|lt|lte)\b/g,
+            (match) => `$${match}`
+        );
+
+        this.query = this.query.find(JSON.parse(queryStr));
+        return this;
+    }
+
+    pagination(resPerPage) {
+        const currentPage = Number(this.queryStr.page) || 1;
+        const skip = resPerPage * (currentPage - 1);
+
+        this.query = this.query.limit(resPerPage).skip(skip);
+        return this;
+    }
+}
+
+module.exports = APIFeatures;

server/utils/errorHandler.js

@@ -0,0 +1,10 @@
+class ErrorHandler extends Error {
+    constructor(message, statusCode) {
+        super(message);
+        this.statusCode = statusCode
+
+        Error.captureStackTrace(this, this.constructor);
+    }
+}
+
+module.exports = ErrorHandler;

server/utils/jwtToken.js

@@ -0,0 +1,21 @@
+// Create and send token and save in the cookie.
+const sendToken = (user, statusCode, res) => {
+  // Create Jwt token
+  const token = user.getJwtToken();
+
+  // Options for cookie
+  const options = {
+    expires: new Date(
+      Date.now() + process.env.COOKIE_EXPIRES_TIME * 24 * 60 * 60 * 1000
+    ),
+    httpOnly: true,
+  };
+
+  res.status(statusCode).cookie("token", token, options).json({
+    success: true,
+    token,
+    user,
+  });
+};
+
+module.exports = sendToken;

server/utils/searchFeatures.js

@@ -0,0 +1,51 @@
+class SearchFeatures {
+    constructor(query, queryString) {
+        this.query = query
+        this.queryString = queryString
+    }
+
+    search() {
+        const keyword = this.queryString.keyword ? {
+            name: {
+                $regex: this.queryString.keyword,
+                $options: "i",
+            }
+        } : {};
+
+        // console.log(keyword);
+
+        this.query = this.query.find({ ...keyword });
+        return this;
+    }
+
+    filter() {
+        const queryCopy = { ...this.queryString }
+
+        // fields to remove for category
+        const removeFields = ["keyword", "page", "limit"];
+
+        // console.log(queryCopy);
+        removeFields.forEach(key => delete queryCopy[key]);
+        // console.log(queryCopy);
+
+        // price filter
+        let queryString = JSON.stringify(queryCopy);
+        queryString = queryString.replace(/\b(gt|gte|lt|lte)\b/g, key => `$${key}`);
+
+        // console.log(JSON.parse(queryString));
+
+        this.query = this.query.find(JSON.parse(queryString));
+        return this;
+    }
+
+    pagination(resultPerPage) {
+        const currentPage = Number(this.queryString.page) || 1;
+
+        const skipProducts = resultPerPage * (currentPage - 1);
+
+        this.query = this.query.limit(resultPerPage).skip(skipProducts);
+        return this;
+    }
+};
+
+module.exports = SearchFeatures;

server/utils/sendEmail.js

@@ -0,0 +1,36 @@
+// const nodeMailer = require('nodemailer');
+const sendEmail = async (options) => {
+
+    // const transporter = nodeMailer.createTransport({
+    //     host: process.env.SMTP_HOST,
+    //     port: process.env.SMTP_PORT,
+    //     service: process.env.SMTP_SERVICE,
+    //     auth: {
+    //         user: process.env.SMTP_MAIL,
+    //         pass: process.env.SMTP_PASSWORD,
+    //     },
+    // });
+
+    // const mailOptions = {
+    //     from: process.env.SMTP_MAIL,
+    //     to: options.email,
+    //     subject: options.subject,
+    //     html: options.message,
+    // };
+
+    // await transporter.sendMail(mailOptions);
+
+    // const msg = {
+    //     to: options.email,
+    //     from: process.env.SENDGRID_MAIL,
+    //     templateId: options.templateId,
+    //     dynamic_template_data: options.data,
+    // }
+    // sgMail.send(msg).then(() => {
+    //     console.log('Email Sent')
+    // }).catch((error) => {
+    //     console.error(error)
+    // });
+};
+
+module.exports = sendEmail;

server/utils/sendToken.js

@@ -0,0 +1,18 @@
+const sendToken = (user, statusCode, res) => {
+    const token = user.getJWTToken();
+
+    const options = {
+        expires: new Date(
+            Date.now() + process.env.COOKIE_EXPIRE * 24 * 60 * 60 * 1000
+        ),
+        httpOnly: true
+    }
+
+    res.status(statusCode).cookie('token', token, options).json({
+        success: true,
+        user,
+        token,
+    });
+}
+
+module.exports = sendToken;