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/**
* Module dependencies
*/
import $ from 'cafy'; import ID from '../../../../cafy-id';
import User from '../../../../models/user';
import Following from '../../../../models/following';
import create from '../../../../services/following/create';
/**
* Follow a user
*/
module.exports = (params, user) => new Promise(async (res, rej) => {
const follower = user;
// Get 'userId' parameter
const [userId, userIdErr] = $.type(ID).get(params.userId);
if (userIdErr) return rej('invalid userId param');
// 自分自身
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 if already following
const exist = await Following.findOne({
followerId: follower._id,
followeeId: followee._id
});
if (exist !== null) {
return rej('already following');
}
// Create following
create(follower, followee);
// Send response
res();
});
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