82 lines
1.5 KiB
TypeScript
82 lines
1.5 KiB
TypeScript
/**
|
|
* Module dependencies
|
|
*/
|
|
import it from 'cafy';
|
|
import User from '../../models/user';
|
|
import Following from '../../models/following';
|
|
import event from '../../event';
|
|
import serializeUser from '../../serializers/user';
|
|
|
|
/**
|
|
* Unfollow a user
|
|
*
|
|
* @param {any} params
|
|
* @param {any} user
|
|
* @return {Promise<any>}
|
|
*/
|
|
module.exports = (params, user) => new Promise(async (res, rej) => {
|
|
const follower = user;
|
|
|
|
// Get 'user_id' parameter
|
|
const [userId, userIdErr] = it(params.user_id, 'id', true);
|
|
if (userIdErr) return rej('invalid user_id param');
|
|
|
|
// Check if the followee is yourself
|
|
if (user._id.equals(userId)) {
|
|
return rej('followee is yourself');
|
|
}
|
|
|
|
// Get followee
|
|
const followee = await User.findOne({
|
|
_id: userId
|
|
}, {
|
|
fields: {
|
|
data: false,
|
|
profile: false
|
|
}
|
|
});
|
|
|
|
if (followee === null) {
|
|
return rej('user not found');
|
|
}
|
|
|
|
// Check not following
|
|
const exist = await Following.findOne({
|
|
follower_id: follower._id,
|
|
followee_id: followee._id,
|
|
deleted_at: { $exists: false }
|
|
});
|
|
|
|
if (exist === null) {
|
|
return rej('already not following');
|
|
}
|
|
|
|
// Delete following
|
|
await Following.update({
|
|
_id: exist._id
|
|
}, {
|
|
$set: {
|
|
deleted_at: new Date()
|
|
}
|
|
});
|
|
|
|
// Send response
|
|
res();
|
|
|
|
// Decrement following count
|
|
User.update({ _id: follower._id }, {
|
|
$inc: {
|
|
following_count: -1
|
|
}
|
|
});
|
|
|
|
// Decrement followers count
|
|
User.update({ _id: followee._id }, {
|
|
$inc: {
|
|
followers_count: -1
|
|
}
|
|
});
|
|
|
|
// Publish follow event
|
|
event(follower._id, 'unfollow', await serializeUser(followee, follower));
|
|
});
|