codecombat/server/middleware/course-instances.coffee
phoenixeliot 91fa467251 Fix teacher sessionless play; uses default campaign levels
Fix typo

Fix race condition with loading next level

Return an empty object for next level instead of an error;
Supermodel has a race condition when some of the models fail to load,
when we override an error response as "success".

Fix next level spec

Remove comment per Scott's request
2016-04-28 12:46:09 -07:00

125 lines
4.7 KiB
CoffeeScript

errors = require '../commons/errors'
wrap = require 'co-express'
Promise = require 'bluebird'
database = require '../commons/database'
mongoose = require 'mongoose'
TrialRequest = require '../models/TrialRequest'
CourseInstance = require '../models/CourseInstance'
Classroom = require '../models/Classroom'
Course = require '../models/Course'
User = require '../models/User'
Level = require '../models/Level'
parse = require '../commons/parse'
module.exports =
addMembers: wrap (req, res) ->
if req.body.userID
userIDs = [req.body.userID]
else if req.body.userIDs
userIDs = req.body.userIDs
else
throw new errors.UnprocessableEntity('Must provide userID or userIDs')
for userID in userIDs
unless _.all userIDs, database.isID
throw new errors.UnprocessableEntity('Invalid list of user IDs')
courseInstance = yield database.getDocFromHandle(req, CourseInstance)
if not courseInstance
throw new errors.NotFound('Course Instance not found.')
classroom = yield Classroom.findById courseInstance.get('classroomID')
if not classroom
throw new errors.NotFound('Classroom not found.')
classroomMembers = (userID.toString() for userID in classroom.get('members'))
unless _.all(userIDs, (userID) -> _.contains classroomMembers, userID)
throw new errors.Forbidden('Users must be members of classroom')
ownsClassroom = classroom.get('ownerID').equals(req.user._id)
addingSelf = userIDs.length is 1 and userIDs[0] is req.user.id
unless ownsClassroom or addingSelf
throw new errors.Forbidden('You must own the classroom to add members')
# Only the enrolled users
users = yield User.find({ _id: { $in: userIDs }}).select('coursePrepaidID')
usersArePrepaid = _.all((user.get('coursePrepaidID') for user in users))
course = yield Course.findById courseInstance.get('courseID')
throw new errors.NotFound('Course referenced by course instance not found') unless course
if not (course.get('free') or usersArePrepaid)
throw new errors.PaymentRequired('Cannot add users to a course instance until they are added to a prepaid')
userObjectIDs = (mongoose.Types.ObjectId(userID) for userID in userIDs)
courseInstance = yield CourseInstance.findByIdAndUpdate(
courseInstance._id,
{ $addToSet: { members: { $each: userObjectIDs } } }
{ new: true }
)
userUpdateResult = yield User.update(
{ _id: { $in: userObjectIDs } },
{ $addToSet: { courseInstances: courseInstance._id } }
)
res.status(200).send(courseInstance.toObject({ req }))
fetchNextLevel: wrap (req, res) ->
levelOriginal = req.params.levelOriginal
if not database.isID(levelOriginal)
throw new errors.UnprocessableEntity('Invalid level original ObjectId')
courseInstance = yield database.getDocFromHandle(req, CourseInstance)
if not courseInstance
throw new errors.NotFound('Course Instance not found.')
courseID = courseInstance.get('courseID')
classroom = yield Classroom.findById courseInstance.get('classroomID')
if not classroom
throw new errors.NotFound('Classroom not found.')
nextLevelOriginal = null
foundLevelOriginal = false
for course in classroom.get('courses') or []
if not courseID.equals(course._id)
continue
for level, index in course.levels
if level.original.toString() is levelOriginal
foundLevelOriginal = true
nextLevelOriginal = course.levels[index+1]?.original
break
if not foundLevelOriginal
throw new errors.NotFound('Level original ObjectId not found in Classroom courses')
if not nextLevelOriginal
res.status(200).send({})
dbq = Level.findOne({original: mongoose.Types.ObjectId(nextLevelOriginal)})
dbq.sort({ 'version.major': -1, 'version.minor': -1 })
dbq.select(parse.getProjectFromReq(req))
level = yield dbq
level = level.toObject({req: req})
res.status(200).send(level)
fetchClassroom: wrap (req, res) ->
courseInstance = yield database.getDocFromHandle(req, CourseInstance)
if not courseInstance
throw new errors.NotFound('Course Instance not found.')
classroom = yield Classroom.findById(courseInstance.get('classroomID')).select(parse.getProjectFromReq(req))
if not classroom
throw new errors.NotFound('Classroom not found.')
isOwner = classroom.get('ownerID')?.equals req.user?._id
isMember = _.any(classroom.get('members') or [], (memberID) -> memberID.equals(req.user.get('_id')))
if not (isOwner or isMember)
throw new errors.Forbidden('You do not have access to this classroom')
classroom = classroom.toObject({req: req})
res.status(200).send(classroom)