84 lines
1.6 KiB
TypeScript
84 lines
1.6 KiB
TypeScript
/**
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* Module dependencies
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*/
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import $ from 'cafy';
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import Reaction from '../../../models/post-reaction';
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import Post from '../../../models/post';
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import notify from '../../../common/notify';
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import { publishPostStream } from '../../../event';
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/**
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* React to a post
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*
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* @param {any} params
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* @param {any} user
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* @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 'post_id' parameter
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const [postId, postIdErr] = $(params.post_id).id().$;
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if (postIdErr) return rej('invalid post_id param');
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// Get 'reaction' parameter
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const [reaction, reactionErr] = $(params.reaction).string().or([
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'like',
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'love',
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'laugh',
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'hmm',
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'surprise',
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'congrats'
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]).$;
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if (reactionErr) return rej('invalid reaction param');
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// Fetch reactee
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const post = await Post.findOne({
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_id: postId
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});
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if (post === null) {
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return rej('post not found');
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}
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// Myself
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if (post.user_id.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
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const exist = await Reaction.findOne({
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post_id: post._id,
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user_id: user._id,
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deleted_at: { $exists: false }
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});
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if (exist !== null) {
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return rej('already reacted');
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}
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// Create reaction
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await Reaction.insert({
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created_at: new Date(),
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post_id: post._id,
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user_id: user._id,
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reaction: reaction
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});
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// Send response
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res();
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const inc = {};
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inc[`reaction_counts.${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.user_id, user._id, 'reaction', {
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post_id: post._id,
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reaction: reaction
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});
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});
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