codecombat/server/middleware/course-instances.coffee

65 lines
2.5 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'
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 }))