Sharkey/src/server/api/endpoints/following/create.ts

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/**
* Module dependencies
*/
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import $ from 'cafy'; import ID from '../../../../cafy-id';
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import User from '../../../../models/user';
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import Following from '../../../../models/following';
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import create from '../../../../services/following/create';
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/**
* Follow a user
*/
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module.exports = (params, user) => new Promise(async (res, rej) => {
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const follower = user;
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// Get 'userId' parameter
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const [userId, userIdErr] = $.type(ID).get(params.userId);
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if (userIdErr) return rej('invalid userId param');
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// 自分自身
if (user._id.equals(userId)) {
return rej('followee is yourself');
}
// Get followee
const followee = await User.findOne({
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_id: userId
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}, {
fields: {
data: false,
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profile: false
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}
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});
if (followee === null) {
return rej('user not found');
}
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// Check if already following
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const exist = await Following.findOne({
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followerId: follower._id,
followeeId: followee._id
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});
if (exist !== null) {
return rej('already following');
}
// Create following
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create(follower, followee);
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// Send response
res();
});