egirlskey/src/server/api/endpoints/posts/reactions/create.ts

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/**
* Module dependencies
*/
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import $ from 'cafy';
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import Reaction from '../../../../../models/post-reaction';
import Post, { pack as packPost } from '../../../../../models/post';
import { pack as packUser } from '../../../../../models/user';
import Watching from '../../../../../models/post-watching';
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import watch from '../../../../../post/watch';
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import { publishPostStream } from '../../../../../publishers/stream';
import notify from '../../../../../publishers/notify';
import pushSw from '../../../../../publishers/push-sw';
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/**
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* React to a post
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*
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* @param {any} params
* @param {any} user
* @return {Promise<any>}
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*/
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module.exports = (params, user) => new Promise(async (res, rej) => {
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// Get 'postId' parameter
const [postId, postIdErr] = $(params.postId).id().$;
if (postIdErr) return rej('invalid postId param');
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// Get 'reaction' parameter
const [reaction, reactionErr] = $(params.reaction).string().or([
'like',
'love',
'laugh',
'hmm',
'surprise',
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'congrats',
'angry',
'confused',
'pudding'
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]).$;
if (reactionErr) return rej('invalid reaction param');
// Fetch reactee
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const post = await Post.findOne({
_id: postId
});
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if (post === null) {
return rej('post not found');
}
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// Myself
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if (post.userId.equals(user._id)) {
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return rej('cannot react to my post');
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}
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// if already reacted
const exist = await Reaction.findOne({
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postId: post._id,
userId: user._id,
deletedAt: { $exists: false }
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});
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if (exist !== null) {
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return rej('already reacted');
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}
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// Create reaction
await Reaction.insert({
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createdAt: new Date(),
postId: post._id,
userId: user._id,
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reaction: reaction
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});
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// Send response
res();
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const inc = {};
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inc[`reactionCounts.${reaction}`] = 1;
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// Increment reactions count
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await Post.update({ _id: post._id }, {
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$inc: inc
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});
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publishPostStream(post._id, 'reacted');
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// Notify
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notify(post.userId, user._id, 'reaction', {
postId: post._id,
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reaction: reaction
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});
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pushSw(post.userId, 'reaction', {
user: await packUser(user, post.userId),
post: await packPost(post, post.userId),
reaction: reaction
});
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// Fetch watchers
Watching
.find({
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postId: post._id,
userId: { $ne: user._id },
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// 削除されたドキュメントは除く
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deletedAt: { $exists: false }
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}, {
fields: {
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userId: true
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}
})
.then(watchers => {
watchers.forEach(watcher => {
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notify(watcher.userId, user._id, 'reaction', {
postId: post._id,
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reaction: reaction
});
});
});
// この投稿をWatchする
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if (user.account.settings.autoWatch !== false) {
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watch(user._id, post);
}
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});