day 10

day10/README.md

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+# day 10
+
+## Instructions
+
+- setup project
+- clone to your github
+- Create a page /code where we show a QR Code. The QR code goes to the route /api/v1/code/<code>?amount=1&service=software service. The code can be random
+- When user scans the code, it will download pdf invoice with the amount specified in url. The service will also specified
+- use this invoice template https://github.com/sparksuite/simple-html-invoice-template
+- Use this library html-pdf-node
+
+- Everything must be done by end of date

day10/app.js

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+var createError = require('http-errors');
+var express = require('express');
+var path = require('path');
+var cookieParser = require('cookie-parser');
+var logger = require('morgan');
+
+var indexRouter = require('./routes/index');
+var usersRouter = require('./routes/users');
+
+const db = require("./models");
+var cors = require("cors");
+
+var app = express();
+app.set("db", db);
+// view engine setup
+app.set('views', path.join(__dirname, 'views'));
+app.set('view engine', 'jade');
+app.use(cors());
+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('/', indexRouter);
+app.use('/users', usersRouter);
+
+// 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;

day10/bin/www

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+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var app = require('../app');
+var debug = require('debug')('day-1:server');
+var http = require('http');
+
+/**
+ * Get port from environment and store in Express.
+ */
+
+var port = normalizePort(process.env.PORT || '3000');
+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);
+}

day10/models/index.js

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+'use strict';
+/*Powered By: Manaknightdigital Inc. https://manaknightdigital.com/ Year: 2020*/
+/**
+ * Sequelize File
+ * @copyright 2020 Manaknightdigital Inc.
+ * @link https://manaknightdigital.com
+ * @license Proprietary Software licensing
+ * @author Ryan Wong
+ *
+ */
+const fs = require('fs');
+const path = require('path');
+let Sequelize = require('sequelize');
+const basename = path.basename(__filename);
+const config = {
+  DB_DATABASE: 'mysql',
+  DB_USERNAME: 'root',
+  DB_PASSWORD: 'root',
+  DB_ADAPTER: 'mysql',
+  DB_NAME: 'day_1',
+  DB_HOSTNAME: 'localhost',
+  DB_PORT: 3306,
+};
+
+let db = {};
+
+let sequelize = new Sequelize(config.DB_DATABASE, config.DB_USERNAME, config.DB_PASSWORD, {
+  dialect: config.DB_ADAPTER,
+  username: config.DB_USERNAME,
+  password: config.DB_PASSWORD,
+  database: config.DB_NAME,
+  host: config.DB_HOSTNAME,
+  port: config.DB_PORT,
+  logging: console.log,
+  timezone: '-04:00',
+  pool: {
+    maxConnections: 1,
+    minConnections: 0,
+    maxIdleTime: 100,
+  },
+  define: {
+    timestamps: false,
+    underscoredAll: true,
+    underscored: true,
+  },
+});
+
+// sequelize.sync({ force: true });
+
+fs.readdirSync(__dirname)
+  .filter((file) => {
+    return file.indexOf('.') !== 0 && file !== basename && file.slice(-3) === '.js';
+  })
+  .forEach((file) => {
+    var model = sequelize['import'](path.join(__dirname, file));
+    db[model.name] = model;
+  });
+
+Object.keys(db).forEach((modelName) => {
+  if (db[modelName].associate) {
+    db[modelName].associate(db);
+  }
+});
+
+db.sequelize = sequelize;
+db.Sequelize = Sequelize;
+
+module.exports = db;

day10/models/location.js

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+module.exports = (sequelize, DataTypes) => {
+  const location = sequelize.define(
+    "location",
+    {
+      id: {
+        type: DataTypes.INTEGER,
+        primaryKey: true,
+        autoIncrement: true,
+      },
+      name: DataTypes.STRING,
+      created_at: DataTypes.DATEONLY,
+      updated_at: DataTypes.DATE,
+    },
+    {
+      timestamps: true,
+      freezeTableName: true,
+      tableName: "location",
+    },
+    {
+      underscoredAll: false,
+      underscored: false,
+    }
+  );
+
+  return location;
+};

day10/package.json

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+{
+  "name": "day-1",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "start": "node ./bin/www"
+  },
+  "dependencies": {
+    "cookie-parser": "~1.4.4",
+    "cors": "^2.8.5",
+    "debug": "~2.6.9",
+    "express": "~4.16.1",
+    "http-errors": "~1.6.3",
+    "jade": "~1.11.0",
+    "jsonwebtoken": "^8.5.1",
+    "morgan": "~1.9.1",
+    "mysql2": "^2.3.3",
+    "sequelize": "^6.15.1"
+  }
+}

day10/public/stylesheets/style.css

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+body {
+  padding: 50px;
+  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
+}
+
+a {
+  color: #00B7FF;
+}

day10/routes/index.js

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+var express = require('express');
+var router = express.Router();
+
+/* GET home page. */
+router.get('/', function(req, res, next) {
+  res.render('index', { title: 'Express' });
+});
+
+module.exports = router;

day10/routes/users.js

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+var express = require('express');
+var router = express.Router();
+
+/* GET users listing. */
+router.get('/', function(req, res, next) {
+  res.send('respond with a resource');
+});
+
+module.exports = router;

day10/services/JwtService.js

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+/*Powered By: Manaknightdigital Inc. https://manaknightdigital.com/ Year: 2020*/
+/**
+ * JWT Service
+ * @copyright 2020 Manaknightdigital Inc.
+ * @link https://manaknightdigital.com
+ * @license Proprietary Software licensing
+ * @author Ryan Wong
+ *
+ */
+var jwt = require('jsonwebtoken');
+const config = {
+  DYNAMIC_CONFIG_JWT_EXPIRE_AT: 3600,
+  DYNAMIC_CONFIG_JWT_KEY: 'sdfsfdsfdsfsdfdsfds',
+  DYNAMIC_CONFIG_JWT_REFRESH_EXPIRE_AT: 7200,
+};
+module.exports = {
+  createAccessToken: function (payload, expireIn = config.DYNAMIC_CONFIG_JWT_EXPIRE_AT) {
+    const secret = config.DYNAMIC_CONFIG_JWT_KEY;
+
+    return jwt.sign(payload, secret, {
+      expiresIn: Number(expireIn),
+      algorithm: 'HS256',
+    });
+  },
+  createRefreshToken: function (payload) {
+    return jwt.sign(payload, config.DYNAMIC_CONFIG_JWT_KEY, {
+      expiresIn: Number(config.DYNAMIC_CONFIG_JWT_REFRESH_EXPIRE_AT),
+      algorithm: 'HS256',
+    });
+  },
+
+  verifyAccessToken: function (token) {
+    try {
+      return jwt.verify(token, config.DYNAMIC_CONFIG_JWT_KEY);
+    } catch (err) {
+      return false;
+    }
+  },
+  verifyRefreshToken: function (token) {
+    try {
+      return jwt.verify(token, config.DYNAMIC_CONFIG_JWT_KEY);
+    } catch (err) {
+      return false;
+    }
+  },
+  generateString: function (length) {
+    let d = new Date().getTime();
+    const time = new Date().getTime();
+    const uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx-xxxx'.replace(/[xy]/g, function (c) {
+      let r = (d + Math.random() * 16) % 16 | 0;
+      d = Math.floor(d / 16);
+      return (c == 'x' ? r : (r & 0x7) | 0x8).toString(16);
+    });
+
+    return (uuid.toUpperCase() + '-' + time.toString()).substring(0, length);
+  },
+  generateUUID: function () {
+    let d = new Date().getTime();
+    const uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
+      let r = (d + Math.random() * 16) % 16 | 0;
+      d = Math.floor(d / 16);
+      return (c == 'x' ? r : (r & 0x7) | 0x8).toString(16);
+    });
+    return uuid.toUpperCase();
+  },
+  getToken: function (req) {
+    if (req.headers.authorization && req.headers.authorization.split(' ')[0] === 'Bearer') {
+      return req.headers.authorization.split(' ')[1];
+    } else if (req.query && req.query.token) {
+      return req.query.token;
+    }
+
+    return null;
+  },
+  verifyTokenMiddleware: function (role) {
+    const self = this;
+    return function (req, res, next) {
+      const token = self.getToken(req);
+      if (!token) {
+        return res.status(401).json({
+          success: false,
+          code: 'UNAUTHORIZED',
+          message: 'Access denied',
+        });
+      }
+      const result = self.verifyAccessToken(token);
+      const roleId = result?.role_id;
+      const user = result?.user;
+      const credentialId = result?.credential_id;
+
+      if (!result || !roleId || !user || !credentialId) {
+        return res.status(401).json({
+          success: false,
+          code: 'TOKEN_INVALID',
+          message: 'Invalid token',
+        });
+      }
+      req.tokenPayload = result;
+      next();
+    };
+  },
+};

day10/services/ValidationService.js

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+const { Validator, addCustomMessages } = require('node-input-validator');
+
+// {fieldName:message} eg:{email:"Invalid Email", password:"Password too short"}
+const formatValidationError = (error) => {
+  const formatted = Object.entries(error)
+    .map(([key, value]) => ({
+      field: key,
+      message: value.message,
+    }))
+    .reduce((accumulator, currentValue) => {
+      if (!accumulator[currentValue]) {
+        accumulator[currentValue.field] = currentValue.message;
+      }
+      return accumulator;
+    }, {});
+  return formatted;
+};
+
+module.exports = {
+  /**
+   * Input Validator middleware for controller
+   * @param {object} validationObject object defining body fields and its validation types eg:{email:required|email}
+   * @param {object} _extendMessages object defining message to throw on validation error eg: {"email.required":"Email is required","email.email":"Invalid email"}
+   *
+   */
+  validateInput: (validationObject = {}, _extendMessages = {}) => async (
+    req,
+    res,
+    next,
+  ) => {
+    const validation = new Validator(req.body, validationObject);
+    addCustomMessages(_extendMessages);
+
+    try {
+      const isValid = await validation.check();
+      if (!isValid) {
+        req.validationError = formatValidationError(validation.errors);
+      }
+      return next();
+    } catch (error) {
+      req.validationError = error.message;
+      return next();
+    }
+  },
+
+  handleValidationErrorForViews: (
+    req,
+    res,
+    viewModel,
+    viewPath = '/',
+    fieldsStoreKey,
+    defaultValue = {},
+  ) => {
+    const validationError = req.validationError;
+
+    if (validationError) {
+      // Remembers fields if validation error occurs
+      Object.entries(defaultValue).forEach(([key, value]) => {
+        viewModel[fieldsStoreKey][key] = value;
+      });
+
+      if (typeof validationError === 'string') {
+        viewModel.error = validationError;
+      } else {
+        viewModel.validationError = req.validationError;
+      }
+      return res.render(viewPath, viewModel);
+    }
+  },
+
+  handleValidationErrorForAPI: (req, res, next) => {
+    const validationError = req.validationError;
+
+    if (validationError) {
+      let error;
+      if (typeof validationError === 'string') {
+        error = validationError;
+      } else {
+        error = req.validationError;
+      }
+      return res.json({ success: false, error });
+    }
+    next();
+  },
+};

day10/views/error.jade

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+extends layout
+
+block content
+  h1= message
+  h2= error.status
+  pre #{error.stack}

day10/views/index.jade

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+extends layout
+
+block content
+  h1= title
+  p Welcome to #{title}

day10/views/layout.jade

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+doctype html
+html
+  head
+    title= title
+    link(rel='stylesheet', href='/stylesheets/style.css')
+  body
+    block content