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138 lines
4.5 KiB
CoffeeScript
138 lines
4.5 KiB
CoffeeScript
app = require 'core/application'
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CreateAccountModal = require 'views/core/CreateAccountModal'
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CocoCollection = require 'collections/CocoCollection'
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Course = require 'models/Course'
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RootView = require 'views/core/RootView'
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stripeHandler = require 'core/services/stripe'
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template = require 'templates/courses/course-enroll'
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utils = require 'core/utils'
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module.exports = class CourseEnrollView extends RootView
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id: 'course-enroll-view'
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template: template
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events:
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'click .btn-buy': 'onClickBuy'
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'change .class-name': 'onNameChange'
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'change .course-select': 'onChangeCourse'
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'change .input-seats': 'onSeatsChange'
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'change #programming-language-select': 'onChangeProgrammingLanguageSelect'
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subscriptions:
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'stripe:received-token': 'onStripeReceivedToken'
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constructor: (options, @courseID) ->
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super options
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@courseID ?= options.courseID
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@seats = 20
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@selectedLanguage = 'python'
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@courses = new CocoCollection([], { url: "/db/course", model: Course})
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@listenTo @courses, 'sync', @onCoursesLoaded
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@supermodel.loadCollection(@courses, 'courses')
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afterRender: ->
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super()
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if @selectedCourse
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@$el.find('.course-select').val(@selectedCourse.id)
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else
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@$el.find('.course-select').val('All Courses')
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onCoursesLoaded: ->
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if @courseID
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@selectedCourse = _.find @courses.models, (a) => a.id is @courseID
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else if @courses.models.length > 0
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@selectedCourse = @courses.models[0]
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@renderNewPrice()
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onClickBuy: (e) ->
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return @openModalView new CreateAccountModal() if me.isAnonymous()
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if @price is 0
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@seats = 9999
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@state = 'creating'
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@createClass()
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return
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if @seats < 1 or not _.isFinite(@seats)
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alert("Please enter the maximum number of students needed for your class.")
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return
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@state = undefined
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@stateMessage = undefined
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@render()
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# Show Stripe handler
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courseTitle = @selectedCourse?.get('name') ? 'All Courses'
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application.tracker?.trackEvent 'Started course purchase', {course: courseTitle, price: @price, seats: @seats}
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stripeHandler.open
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amount: @price
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description: "#{courseTitle} for #{@seats} students"
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bitcoin: true
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alipay: if me.get('country') is 'china' or (me.get('preferredLanguage') or 'en-US')[...2] is 'zh' then true else 'auto'
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onStripeReceivedToken: (e) ->
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@state = 'purchasing'
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@render?()
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@createClass(e.token.id)
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onChangeCourse: (e) ->
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@selectedCourse = _.find @courses.models, (a) -> a.id is $(e.target).val()
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@renderNewPrice()
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onChangeProgrammingLanguageSelect: (e) ->
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@selectedLanguage = @$('#programming-language-select').val()
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onNameChange: (e) ->
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@className = $('.class-name').val()
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onSeatsChange: (e) ->
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@seats = $(e.target).val()
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@seats = 20 if @seats < 1 or not _.isFinite(@seats)
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@renderNewPrice()
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createClass: (token) ->
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data =
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name: @className
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seats: @seats
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stripe:
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token: token
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timestamp: new Date().getTime()
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aceConfig: { language: @selectedLanguage }
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data.courseID = @selectedCourse.id if @selectedCourse
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jqxhr = $.post('/db/course_instance/-/create', data)
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jqxhr.done (data, textStatus, jqXHR) =>
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application.tracker?.trackEvent 'Finished course purchase', {course: @selectedCourse?.get('name') ? 'All Courses', price: @price, seats: @seats}
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# TODO: handle fetch errors
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me.fetch(cache: false).always =>
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courseID = @selectedCourse?.id ? @courses.models[0]?.id
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route = "/courses/#{courseID}"
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viewArgs = [{}, courseID]
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if data?.length > 0
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courseInstanceID = data[0]._id
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route += "/#{courseInstanceID}"
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viewArgs[0].courseInstanceID = courseInstanceID
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Backbone.Mediator.publish 'router:navigate',
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route: route
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viewClass: 'views/courses/CourseDetailsView'
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viewArgs: viewArgs
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jqxhr.fail (xhr, textStatus, errorThrown) =>
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console.error 'Got an error purchasing a course:', textStatus, errorThrown
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application.tracker?.trackEvent 'Failed course purchase', status: textStatus
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if xhr.status is 402
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@state = 'declined'
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@stateMessage = arguments[2]
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else
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@state = 'unknown_error'
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@stateMessage = "#{xhr.status}: #{xhr.responseText}"
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@render?()
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renderNewPrice: ->
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if @selectedCourse
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coursePrices = [@selectedCourse.get('pricePerSeat')]
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else
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coursePrices = (c.get('pricePerSeat') for c in @courses.models)
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@price = utils.getCourseBundlePrice(coursePrices, @seats)
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@price = 0 if me.isAdmin()
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@render?()
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