overleaf/services/contacts/app/coffee/ContactManager.coffee

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CoffeeScript
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{db, ObjectId} = require "./mongojs"
module.exports = ContactManager =
touchContact: (user_id, contact_id, callback = (error) ->) ->
try
user_id = ObjectId(user_id.toString())
catch error
return callback error
update = { $set: {}, $inc: {} }
update.$inc["contacts.#{contact_id}.n"] = 1
update.$set["contacts.#{contact_id}.ts"] = new Date()
db.contacts.update({
user_id: user_id
}, update, {
upsert: true
}, callback)