Rewrote search + schedule pages with React

schedules/.babelrc

 {
   "presets": [
-    ["env", {
+    [
+      "env",
+      {
         "modules": false,
         "targets": {
           "browsers": "> 1%",
           "uglify": true
         },
         "useBuiltIns": true
-    }]
+      }
+    ],
+    "react"
   ],
-
   "plugins": [
     "syntax-dynamic-import",
     "transform-object-rest-spread",
-    ["transform-class-properties", { "spec": true }]
+    [
+      "transform-class-properties",
+      {
+        "spec": true
+      }
+    ]
   ]
 }

schedules/Dockerfile

@@ -14,3 +14,4 @@ RUN export SECRET_KEY_BASE=$(rails secret)
 RUN rails assets:precompile
 RUN rails db:migrate
 RUN rails db:seed
+RUN rails runner db/load_course_ratings.rb

schedules/Gemfile

@@ -21,6 +21,9 @@ gem 'uglifier'
 
 gem 'webpacker', '~> 3.5'
 
+# Access Ruby data from JavaScript
+gem 'gon'
+
 # Use Redis adapter to run Action Cable in production
 # gem 'redis', '~> 4.0'
 # Use ActiveModel has_secure_password
@@ -74,7 +77,3 @@ gem 'apipie-rails'
 
 # Markdown for API docs
 gem 'maruku'
-
-# gem 'jquery-rails'
-
-# gem 'font-awesome-sass', '~> 5.3.1'

schedules/Gemfile.lock

@@ -64,6 +64,10 @@ GEM
     ffi (1.9.25)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
+    gon (6.2.1)
+      actionpack (>= 3.0)
+      multi_json
+      request_store (>= 1.0)
     httparty (0.16.3)
       mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
@@ -144,6 +148,8 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
+    request_store (1.4.1)
+      rack (>= 1.4)
     rubocop (0.58.2)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
@@ -216,6 +222,7 @@ DEPENDENCIES
   apipie-rails
   byebug
   capybara (~> 2.13)
+  gon
   httparty
   icalendar
   jbuilder (~> 2.5)

schedules/app/assets/javascripts/about.js

+// Place all the behaviors and hooks related to the matching controller here.
+// All this logic will automatically be available in application.js.

schedules/app/assets/stylesheets/about.scss

+// Place all the styles related to the about controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

schedules/app/controllers/about_controller.rb

+class AboutController < ApplicationController
+  def index; end
+end

schedules/app/controllers/api/course_sections_controller.rb

@@ -28,7 +28,6 @@ class API::CourseSectionsController < ApplicationController
       @sections = @sections.where('UPPER(instructors.name) LIKE UPPER(?)', "%#{params[:instructor]}%")
     end
 
-    # @sections = CourseSection.fetch(params).all
     res = @sections.map do |s|
       {
         id: s.id,
@@ -38,6 +37,9 @@ class API::CourseSectionsController < ApplicationController
         crn: s.crn,
         title: s.title,
         instructor_name: s.instructor_name,
+        instructor_url: instructor_url(s.instructor),
+        teaching_rating: s.instructor.rating,
+        course_rating: s.course_rating,
         section_type: s.section_type,
         start_date: s.start_date,
         end_date: s.end_date,

schedules/app/controllers/application_controller.rb

 # Configures the application.
 class ApplicationController < ActionController::Base
   include BySemester
-  
-  # On each request, set the semester and cart.
-  before_action :set_cart
-
-  # The user's cart is stored as a JSON-encoded list of CRNs.
-  # set_cart sets the @cart variable, which is a list of the sections represented by the CRNs.
-  def set_cart
-    # set the cart cookie to be empty if it doesn't already exist
-    cookies.permanent[:cart] = "[]" if cookies.permanent[:cart].nil?
-
-    # decode the JSON list into an array
-    @cart = JSON.parse(cookies.permanent[:cart])
-
-    # get rid of any invalid CRNs
-    @cart = @cart.reject { |crn| CourseSection.find_by_crn(crn).nil? }
-
-    # set the cookie to the JSON-encoded list of valid sections
-    cookies.permanent[:cart] = @cart.to_json
-  end
 end

schedules/app/controllers/concerns/by_semester.rb

+# BySemester contains logic for setting the current request's
+# Semester. This is not needed by every page as it used to be, so it
+# now lives in this concern instead of ApplicationController.
+module BySemester
+  extend ActiveSupport::Concern
+
+  included do
+    before_action :set_semester
+  end
+
+  # This page needs to know what semester it should load data from.
+  # set_semester checks both the semester_id query parameter and the user's cookies
+  # to look for a semester id and loads whatever it finds into @semester.
+  #
+  # By default, load the most recent semester.
+  def set_semester
+    if params.key?(:semester_id)
+      @semester = Semester.find_by_id params[:semester_id]
+      cookies[:semester_id] = @semester.id
+    elsif cookies[:semester_id].nil?
+      @semester = Semester.first
+      cookies[:semester_id] = @semester.id
+    else
+      @semester = Semester.find_by_id cookies[:semester_id]
+    end
+  end
+end

schedules/app/controllers/schedules_controller.rb

@@ -2,29 +2,32 @@
 class SchedulesController < ApplicationController
   include SchedulesHelper
 
-  def show
-    valid_crns = @cart.reject { |crn|
-      s = CourseSection.find_by_crn(crn)
-      s.nil?
-    }
+  def show; end
 
-    @all = valid_crns.map { |crn|
+  def view
+    @all = params[:crns].split(',').map { |crn|
       CourseSection.latest_by_crn(crn)
     }
+    @all.reject!(&:nil?)
     @without_online = @all.reject { |s|
       s.start_time == "TBA" || s.end_time == "TBA"
     }
     @events = generate_fullcalender_events(@without_online)
   end
 
-  def view
-    @all = params[:crns].split(',').map { |crn|
-      CourseSection.latest_by_crn(crn)
-    }
-    @all.reject!(&:nil?)
-    @without_online = @all.reject { |s|
+  def events
+    @cart = params[:crns].split(',')
+                         .map { |crn| CourseSection.latest_by_crn(crn) }
+                         .reject(&:nil?)
+
+    @without_online = @cart.reject { |s|
       s.start_time == "TBA" || s.end_time == "TBA"
     }
+
     @events = generate_fullcalender_events(@without_online)
+    sections = @cart.map do |s|
+      s.serializable_hash.merge(instructor_name: s.instructor.name, instructor_url: instructor_url(s.instructor))
+    end
+    render json: { events: @events, sections: sections }
   end
 end

schedules/app/controllers/search_controller.rb

@@ -13,7 +13,7 @@ class SearchController < ApplicationController
     /[[:alpha:]]{2,4} \d{3}/.match(params[:query]) do |m|
       subj, num = m[0].split(' ')
       course = Course.find_by(subject: subj.upcase, course_number: num)
-      redirect_to(course_url course) unless course.nil?
+      redirect_to(course_url(course)) unless course.nil?
     end
 
     /[[:alpha:]]{2,4}/i.match(params[:query]) do |m|
@@ -37,19 +37,21 @@ class SearchController < ApplicationController
 
         @instructors = Instructor.named(params[:query])
       end
+
+      @courses.map! do |c|
+        c.serializable_hash.merge(url: course_url(c))
+      end
+      gon.courses = @courses
+      gon.courses.map!
     end
 
     /[0-9]{5}/.match(params[:query]) do |m|
-      redirect_to(course_url CourseSection.latest_by_crn(m[0]).course)
+      redirect_to(course_url(CourseSection.latest_by_crn(m[0]).course))
     end
 
-    # results = SearchHelper::GenericItem.fetchall(String.new(params[:query]), semester: @semester).group_by(&:type)
-    # @instructors = results[:instructor]&.map(&:data)
-    # @courses = results[:course]&.map(&:data)
-
-    if @courses&.count == 1 && @instructors&.count == 0
-      redirect_to course_url(@courses.first)
-    elsif @courses&.count == 0 && @instructors&.count == 1
+    if @courses&.count == 1 && @instructors&.count&.zero?
+      redirect_to course_url(@courses.first["id"])
+    elsif @courses&.count&.zero? && @instructors&.count == 1
       redirect_to instructor_url(@instructors.first)
     end
   end

schedules/app/helpers/about_helper.rb

+module AboutHelper
+end

schedules/app/helpers/schedules_helper.rb

@@ -19,7 +19,9 @@ module SchedulesHelper
         {
           title: s.name,
           start: "#{formatted_date}T#{time}",
-          end: "#{formatted_date}T#{endtime}"
+          end: "#{formatted_date}T#{endtime}",
+          crn: s.crn,
+          active: true
         }
       end
     end.flatten

schedules/app/helpers/search_helper.rb

 module SearchHelper
-  def in_cart?(crn)
-    @cart.include? crn.to_s
-  end
-
   class GenericQueryData
     attr_reader :semester
     attr_reader :sort_mode

schedules/app/javascript/packs/application.js

@@ -10,6 +10,9 @@
 import '@babel/polyfill';
 import 'url-polyfill';
 
+import React from 'react';
+import Cart from 'src/Cart';
+
 const elementFromString = string => {
     const html = new DOMParser().parseFromString(string, 'text/html');
     return html.body.firstChild;

schedules/app/javascript/packs/home.js

+import React from 'react';
+import ReactDOM from 'react-dom';
+import Cart from 'src/Cart';
+import QuickAdd from 'src/QuickAdd';
+
+document.addEventListener('DOMContentLoaded', () => {
+    const calendarUrl = `${window.location.protocol}//${window.location.hostname}${window.location.port == 3000 ? ':3000' : ''}/schedule`;
+    ReactDOM.render(
+        <QuickAdd
+            loadCalendar={() => {
+                window.location.href = calendarUrl;
+            }}
+        />,
+        document.getElementById('quick-add')
+    );
+});

schedules/app/javascript/packs/instructor.js

+// /**
+//  * Either adds or removes a section from the cart depending on
+//  * if it is currently in the cart.
+//  */
+
+import $ from 'jquery';
+import Cart from 'src/Cart';
+
+const addOrRemoveFromCart = async (event, sectionNode) => {
+    event && event.stopPropagation();
+    if (event.target.tagName === 'A') return;
+    const section = { ...sectionNode.dataset };
+
+    Cart.toggleCrn(section.crn);
+    const icon = $(sectionNode.querySelector('.add-remove-btn #icon'));
+    const text = sectionNode.querySelector('.add-remove-btn .text');
+    if (Cart.includesCrn(section.crn)) {
+        icon.addClass('fa-minus').removeClass('fa-plus');
+        text.innerText = 'Remove';
+    } else {
+        icon.addClass('fa-plus').removeClass('fa-minus');
+        text.innerText = 'Add';
+    }
+};
+
+const initSearchListeners = () => {
+    const sectionItems = Array.from(document.querySelectorAll('.section-item'));
+    sectionItems.forEach(item => {
+        item.onclick = event => addOrRemoveFromCart(event, item);
+    });
+
+    setTimeout(() => {
+        sectionItems.forEach(item => {
+            const icon = $(item.querySelector('.add-remove-btn #icon'));
+            const text = item.querySelector('.add-remove-btn .text');
+            console.log(item.dataset.crn);
+            if (Cart.includesCrn(item.dataset.crn)) {
+                icon.addClass('fa-minus').removeClass('fa-plus');
+                text.innerText = 'Remove';
+            } else {
+                icon.addClass('fa-plus').removeClass('fa-minus');
+                text.innerText = 'Add';
+            }
+        });
+    }, 100);
+};
+
+document.addEventListener('DOMContentLoaded', initSearchListeners);

schedules/app/javascript/packs/schedules.js

-import Cart from 'src/cart';
+import React from 'react';
+import ReactDOM from 'react-dom';
+import Cart from 'src/Cart';
 import { saveAs } from 'file-saver';
 import html2canvas from 'html2canvas';
 import $ from 'jquery';
-import 'fullcalendar';
-import 'moment';
+import CalendarPage from 'src/CalendarPage';
 
 document.addEventListener('DOMContentLoaded', () => {
-    const eventsTemplate = document.querySelector('#events');
-    if (eventsTemplate) {
-        const eventsJSON = eventsTemplate.dataset.events;
-        const events = JSON.parse(eventsJSON);
-        window.events = events;
-        $('#calendar').fullCalendar({
-            defaultDate: new Date(2019, 0, 14),
-            defaultView: 'agendaWeek',
-            header: false,
-            events: renderEvents,
-            columnHeaderFormat: 'dddd',
-            allDaySlot: false,
-        });
-    }
-    initListeners();
+    ReactDOM.render(<CalendarPage />, document.getElementById('root'));
 });
 
-const renderEvents = (start, end, timezone, callback) => {
-    callback(window.events);
-};
-
-const remove = async item => {
-    await Cart.toggleSection({ ...item.dataset });
-    location.reload(true);
-};
-
-/**
- * Generates a URL for the current sections in the schedule
- * and sets the link in the modal to it.
- */
-const setUrlInModal = () => {
-    document.getElementById('calendar-link').innerText = `${window.location.protocol}//${window.location.hostname}/api/schedules?crns=${Cart._courses.join(',')}`;
-};
-
 const downloadIcs = async () => {
     const response = await fetch(`${window.location.protocol}//${window.location.hostname}/api/schedules?crns=${Cart._courses.join(',')}`);
     const text = await response.text();
@@ -69,7 +39,7 @@ const initListeners = () => {
     document.getElementById('save-image').onclick = saveImage;
 
     document.getElementById('share-url').innerText = `${window.location.protocol}//${window.location.hostname}/schedule/view?crns=${Cart._courses.join(',')}`;
-    document.getElementById('share-url').href= `${window.location.protocol}//${window.location.hostname}/schedule/view?crns=${Cart._courses.join(',')}`;
+    document.getElementById('share-url').href = `${window.location.protocol}//${window.location.hostname}/schedule/view?crns=${Cart._courses.join(',')}`;
 };
 
 if (!HTMLCanvasElement.prototype.toBlob) {