update,

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/app.js

@@ -0,0 +1,49 @@
+var createError = require('http-errors');
+var express = require('express');
+var path = require('path');
+var logger = require('morgan');
+
+// use lab6-db
+var monk = require('monk');
+var db = monk('127.0.0.1:27017/lab6-db');
+
+var indexRouter = require('./routes/index');
+var usersRouter = require('./routes/users');
+
+var app = express();
+
+// view engine setup
+app.set('views', path.join(__dirname, 'views'));
+app.set('view engine', 'pug');
+
+app.use(logger('dev'));
+app.use(express.json());
+app.use(express.urlencoded({ extended: false }));
+app.use(express.static(path.join(__dirname, 'public')));
+
+// Make our db accessible to routers 
+app.use(function(req,res,next){
+    req.db = db; 
+	next();
+});
+
+app.use('/', indexRouter);
+app.use('/users', usersRouter);
+
+// for requests not matching the above routes, create 404 error 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 environment
+    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;

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/bin/www

@@ -0,0 +1,90 @@
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var app = require('../app');
+var debug = require('debug')('lab6: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);
+}

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/generate_db.js

@@ -0,0 +1,18 @@
+var conn = new Mongo();
+var db = conn.getDB("lab6-db");
+
+var topic_name = ["www", "html", "css", "javascript", "nodejs", "jquery"];
+var topic_status = ["no", "no", "no", "no", "no", "no"];
+var topic_hour = [2, 4, 4, 6, 10, 6];
+
+db.topicList.remove({});
+
+for(let i = 0; i < topic_name.length; i++){
+    db.topicList.insert(
+        {
+            'name': topic_name[i],
+            'hour': topic_hour[i],
+            'status': topic_status[i]
+        }
+    )
+}

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "lab6",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "start": "node ./bin/www"
+  },
+  "dependencies": {
+    "cookie-parser": "~1.4.4",
+    "debug": "~2.6.9",
+    "express": "~4.16.1",
+    "http-errors": "~1.6.3",
+    "jade": "~1.11.0",
+    "monk": "^7.3.4",
+    "morgan": "~1.9.1",
+    "pug": "^3.0.2"
+  }
+}

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/public/javascripts/externalJS.js

@@ -0,0 +1,75 @@
+$(document).ready(function() {
+    showAllTopics()
+});
+
+
+// step 7.2
+function showAllTopics(){
+    var table_content = `
+        <tr><th>Topic Name</th>
+        <th>Study Hour</th>
+        <th>Chosen Status</th>
+        <th>Operation</th></tr>
+    `
+
+    $.getJSON('/users/get_table').then((docs)=>{
+        $.each(docs, function(i, row){
+            if(row.status == 'yes'){
+                row_class = "highlight"
+                row_operation = "remove"
+            }else{
+                row_class = ""
+                row_operation = "add"
+            }
+
+            table_content += `
+                <tr class=${row_class}><td>${row.name}</td>
+                <td>${row.hour}</td>
+                <td>${row.status}</td>
+                <td><a href="#" class="operation" rel="${row._id}">${row_operation}</a></td></tr>
+            `
+        })
+        $('#plan_table').html(table_content)
+    })
+}
+
+$("#plan_table").on('click', '.operation', operateTopic)
+
+// step 8.2
+function operateTopic(event){
+    event.preventDefault()
+    
+    var id = $(this).attr('rel')
+    var op = $(this).html()
+
+    $.ajax({
+        type: 'PUT',
+        url: '/users/update_status',
+        data: {
+            _id: id,
+            op: op
+        }        
+    }).done(function(msg){
+        alert(msg);
+        showAllTopics()
+    });
+}
+
+$("#submit_delete").on('click', deleteTopic)
+
+
+// step 9.2
+function deleteTopic(event){
+    event.preventDefault()
+
+    var topic_name = $("#input_name").val()
+    if($(`td:contains("${topic_name}")`).length != 0){
+        $.ajax({
+            type: 'DELETE',
+            url: '/users/delete_topic/' + topic_name
+        }).done(function(msg){
+            alert(msg);
+            showAllTopics();
+        });
+    }else alert("No such topic in the table!")
+}

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/public/stylesheets/style.css

@@ -0,0 +1,159 @@
+body {
+    margin: 0;
+    background: #163a50;
+    font: 300 100%/120% "Tahoma", Arial, Helvetica, sans-serif;
+}
+
+header {
+    overflow: hidden;
+}
+
+header, nav, .contents, footer {
+    box-sizing: border-box;
+    max-width: 1080px;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+header, nav, footer {
+    background: #0f2736;
+}
+
+h1, h2, h3, h4 {
+    font-weight: bold
+}
+
+.contents {
+    padding: 1em 2em 2.5em 2em;
+}
+
+/* increase line spacing for main title */
+h1 {
+    line-height: 120%;
+    margin-top: 0.5em;
+    float: left;
+    width: auto;
+}
+
+header img {
+    float: left;
+}
+
+/* change color and remove underline for links */
+footer a {
+    color: inherit;
+    text-decoration: none;
+}
+
+#plan_table a {
+    color: rgb(0, 47, 255);
+}
+
+/* size and margin for logo image */
+header img {
+    max-width: 100%;
+    max-height: 100%;
+    margin: 0.5em;
+}
+
+form {
+    padding: 1em 2em;
+}
+
+input[type="number"] {
+    min-width: 4em;
+}
+
+/* style for footer */
+footer {
+    margin: auto;
+    text-align: center;
+}
+
+footer div {
+    padding: 1em;
+}
+
+.contents h2 {
+    text-align: center;
+}
+
+button {
+    margin-top: 1em;
+    margin-bottom: 1em;
+    width: 5em;
+    height: 2em;
+}
+
+input {
+    width: 5em;
+    height: 1.6em;
+    margin-right: 2em;
+}
+
+#delete_div p{
+    color: gray;
+}
+
+
+header *, nav * {
+    color: #FFFFFF;
+}
+
+.contents {
+    background: #FFFFFF;
+}
+
+.subtitle {
+    font-size: 0.6em;
+    font-weight: normal;
+}
+
+@media screen and (max-width: 1080px) {
+    header,nav {
+        overflow: hidden;
+    }
+}
+
+@media screen and (max-width: 720px) {
+    header img {
+        display: none;
+    }
+    header h1 {
+        padding: 0 0.5em;
+    }
+    nav div {
+        width: 100%;
+    }
+}
+
+.contents {
+    text-align: center;
+}
+
+.contents li{
+    text-align: left;
+}
+
+/* style for the table */
+table, th, td {
+    border: 1.8px solid black;
+    border-collapse: collapse;
+    text-align: center;
+    vertical-align: center;
+    margin: auto;
+    width: 400px;
+    height: 50px;
+}
+
+th {
+    background-color: rgb(178, 177, 177);
+}
+
+.highlight {
+    background-color: rgb(255, 0, 0);
+}
+
+#plan_table {
+    margin-bottom: 2em;
+}

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/routes/index.js

@@ -0,0 +1,9 @@
+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;

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/views/error.pug

@@ -0,0 +1,6 @@
+extends layout
+
+block content
+  h1= message
+  h2= error.status
+  pre #{error.stack}

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/views/index.pug

@@ -0,0 +1,26 @@
+extends layout
+
+block content 
+    header
+        img(src='/images/logo.png' width="128" height="128")
+        h1 Course Study Plan
+            br 
+            span(class="subtitle") COMP3322A Modern Technologies on World Wide Web
+
+    section(class="contents")
+        h2 Instruction
+        ul
+            li Add/Remove a topic to/from your study plan by clicking the respective operation.
+            li Delete a topic permanently by typing its name into the input box and clicking the "Delete" button.
+        hr
+
+        h2 Topic Plan
+        div
+            table#plan_table
+        div#delete_div
+            p Fill in a topic name to delete it from the table permanently:
+            input#input_name(type='text', placeholder='topic name')
+            button#submit_delete Delete
+
+    footer
+        div <a href="#">Back to top</a>

james_endl/COMP3322A-Lab-8-MERN/references/lab6_sample_solution/views/layout.pug

@@ -0,0 +1,10 @@
+doctype html
+html
+    head
+        title= "lab6"
+        link(rel='stylesheet', href='/stylesheets/style.css')
+        meta(name="viewport" content="width=device-width, initial-scale=1.0")
+    body
+        block content
+        script(src='https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js') 
+        script(src='/javascripts/externalJS.js')