rudeshark.net/src/api/endpoints/posts/create.ts

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/**
* Module dependencies
*/
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import $ from 'cafy';
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import deepEqual = require('deep-equal');
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import parse from '../../common/text';
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import Post from '../../models/post';
import { isValidText } from '../../models/post';
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import User from '../../models/user';
import Following from '../../models/following';
import DriveFile from '../../models/drive-file';
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import Watching from '../../models/post-watching';
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import serialize from '../../serializers/post';
import notify from '../../common/notify';
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import watch from '../../common/watch-post';
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import event from '../../event';
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import config from '../../../conf';
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/**
* Create a post
*
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* @param {any} params
* @param {any} user
* @param {any} app
* @return {Promise<any>}
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*/
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module.exports = (params, user, app) => new Promise(async (res, rej) => {
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// Get 'text' parameter
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const [text, textErr] = $(params.text).optional.string().pipe(isValidText).$;
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if (textErr) return rej('invalid text');
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// Get 'media_ids' parameter
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const [mediaIds, mediaIdsErr] = $(params.media_ids).optional.array('id').unique().range(1, 4).$;
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if (mediaIdsErr) return rej('invalid media_ids');
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let files = [];
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if (mediaIds !== undefined) {
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// Fetch files
// forEach だと途中でエラーなどがあっても return できないので
// 敢えて for を使っています。
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for (const mediaId of mediaIds) {
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// Fetch file
// SELECT _id
const entity = await DriveFile.findOne({
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_id: mediaId,
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user_id: user._id
}, {
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_id: true
});
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if (entity === null) {
return rej('file not found');
} else {
files.push(entity);
}
}
} else {
files = null;
}
// Get 'repost_id' parameter
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const [repostId, repostIdErr] = $(params.repost_id).optional.id().$;
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if (repostIdErr) return rej('invalid repost_id');
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let repost = null;
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if (repostId !== undefined) {
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// Fetch repost to post
repost = await Post.findOne({
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_id: repostId
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});
if (repost == null) {
return rej('repostee is not found');
} else if (repost.repost_id && !repost.text && !repost.media_ids) {
return rej('cannot repost to repost');
}
// Fetch recently post
const latestPost = await Post.findOne({
user_id: user._id
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}, {
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sort: {
_id: -1
}
});
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// 直近と同じRepost対象かつ引用じゃなかったらエラー
if (latestPost &&
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latestPost.repost_id &&
latestPost.repost_id.equals(repost._id) &&
text === undefined && files === null) {
return rej('cannot repost same post that already reposted in your latest post');
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}
// 直近がRepost対象かつ引用じゃなかったらエラー
if (latestPost &&
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latestPost._id.equals(repost._id) &&
text === undefined && files === null) {
return rej('cannot repost your latest post');
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}
}
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// Get 'in_reply_to_post_id' parameter
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const [inReplyToPostId, inReplyToPostIdErr] = $(params.reply_to_id).optional.id().$;
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if (inReplyToPostIdErr) return rej('invalid in_reply_to_post_id');
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let inReplyToPost = null;
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if (inReplyToPostId !== undefined) {
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// Fetch reply
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inReplyToPost = await Post.findOne({
_id: inReplyToPostId
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});
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if (inReplyToPost === null) {
return rej('in reply to post is not found');
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}
// 返信対象が引用でないRepostだったらエラー
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if (inReplyToPost.repost_id && !inReplyToPost.text && !inReplyToPost.media_ids) {
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return rej('cannot reply to repost');
}
}
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// Get 'poll' parameter
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const [poll, pollErr] = $(params.poll).optional.strict.object()
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.have('choices', $().array('string')
.unique()
.range(2, 10)
.each(c => c.length > 0 && c.length < 50))
.$;
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if (pollErr) return rej('invalid poll');
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if (poll) {
(poll as any).choices = (poll as any).choices.map((choice, i) => ({
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id: i, // IDを付与
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text: choice.trim(),
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votes: 0
}));
}
// テキストが無いかつ添付ファイルが無いかつRepostも無いかつ投票も無かったらエラー
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if (text === undefined && files === null && repost === null && poll === undefined) {
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return rej('text, media_ids, repost_id or poll is required');
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}
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// 直近の投稿と重複してたらエラー
// TODO: 直近の投稿が一日前くらいなら重複とは見なさない
if (user.latest_post) {
if (deepEqual({
text: user.latest_post.text,
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reply: user.latest_post.reply_to_id ? user.latest_post.reply_to_id.toString() : null,
repost: user.latest_post.repost_id ? user.latest_post.repost_id.toString() : null,
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media_ids: (user.latest_post.media_ids || []).map(id => id.toString())
}, {
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text: text,
reply: inReplyToPost ? inReplyToPost._id.toString() : null,
repost: repost ? repost._id.toString() : null,
media_ids: (files || []).map(file => file._id.toString())
})) {
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return rej('duplicate');
}
}
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// 投稿を作成
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const post = await Post.insert({
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created_at: new Date(),
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media_ids: files ? files.map(file => file._id) : undefined,
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reply_to_id: inReplyToPost ? inReplyToPost._id : undefined,
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repost_id: repost ? repost._id : undefined,
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poll: poll,
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text: text,
user_id: user._id,
app_id: app ? app._id : null
});
// Serialize
const postObj = await serialize(post);
// Reponse
res(postObj);
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// -----------------------------------------------------------
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// Post processes
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User.update({ _id: user._id }, {
$set: {
latest_post: post
}
});
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const mentions = [];
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function addMention(mentionee, type) {
// Reject if already added
if (mentions.some(x => x.equals(mentionee))) return;
// Add mention
mentions.push(mentionee);
// Publish event
if (!user._id.equals(mentionee)) {
event(mentionee, type, postObj);
}
}
// Publish event to myself's stream
event(user._id, 'post', postObj);
// Fetch all followers
const followers = await Following
.find({
followee_id: user._id,
// 削除されたドキュメントは除く
deleted_at: { $exists: false }
}, {
follower_id: true,
_id: false
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});
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// Publish event to followers stream
followers.forEach(following =>
event(following.follower_id, 'post', postObj));
// Increment my posts count
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User.update({ _id: user._id }, {
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$inc: {
posts_count: 1
}
});
// If has in reply to post
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if (inReplyToPost) {
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// Increment replies count
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Post.update({ _id: inReplyToPost._id }, {
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$inc: {
replies_count: 1
}
});
// 自分自身へのリプライでない限りは通知を作成
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notify(inReplyToPost.user_id, user._id, 'reply', {
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post_id: post._id
});
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// Fetch watchers
Watching
.find({
post_id: inReplyToPost._id,
user_id: { $ne: user._id },
// 削除されたドキュメントは除く
deleted_at: { $exists: false }
}, {
fields: {
user_id: true
}
})
.then(watchers => {
watchers.forEach(watcher => {
notify(watcher.user_id, user._id, 'reply', {
post_id: post._id
});
});
});
// この投稿をWatchする
// TODO: ユーザーが「返信したときに自動でWatchする」設定を
// オフにしていた場合はしない
watch(user._id, inReplyToPost);
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// Add mention
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addMention(inReplyToPost.user_id, 'reply');
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}
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// If it is repost
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if (repost) {
// Notify
const type = text ? 'quote' : 'repost';
notify(repost.user_id, user._id, type, {
post_id: post._id
});
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// Fetch watchers
Watching
.find({
post_id: repost._id,
user_id: { $ne: user._id },
// 削除されたドキュメントは除く
deleted_at: { $exists: false }
}, {
fields: {
user_id: true
}
})
.then(watchers => {
watchers.forEach(watcher => {
notify(watcher.user_id, user._id, type, {
post_id: post._id
});
});
});
// この投稿をWatchする
// TODO: ユーザーが「Repostしたときに自動でWatchする」設定を
// オフにしていた場合はしない
watch(user._id, repost);
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// If it is quote repost
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if (text) {
// Add mention
addMention(repost.user_id, 'quote');
} else {
// Publish event
if (!user._id.equals(repost.user_id)) {
event(repost.user_id, 'repost', postObj);
}
}
// 今までで同じ投稿をRepostしているか
const existRepost = await Post.findOne({
user_id: user._id,
repost_id: repost._id,
_id: {
$ne: post._id
}
});
if (!existRepost) {
// Update repostee status
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Post.update({ _id: repost._id }, {
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$inc: {
repost_count: 1
}
});
}
}
// If has text content
if (text) {
// Analyze
const tokens = parse(text);
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/*
// Extract a hashtags
const hashtags = tokens
.filter(t => t.type == 'hashtag')
.map(t => t.hashtag)
// Drop dupulicates
.filter((v, i, s) => s.indexOf(v) == i);
// ハッシュタグをデータベースに登録
registerHashtags(user, hashtags);
*/
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// Extract an '@' mentions
const atMentions = tokens
.filter(t => t.type == 'mention')
.map(m => m.username)
// Drop dupulicates
.filter((v, i, s) => s.indexOf(v) == i);
// Resolve all mentions
await Promise.all(atMentions.map(async (mention) => {
// Fetch mentioned user
// SELECT _id
const mentionee = await User
.findOne({
username_lower: mention.toLowerCase()
}, { _id: true });
// When mentioned user not found
if (mentionee == null) return;
// 既に言及されたユーザーに対する返信や引用repostの場合も無視
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if (inReplyToPost && inReplyToPost.user_id.equals(mentionee._id)) return;
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if (repost && repost.user_id.equals(mentionee._id)) return;
// Add mention
addMention(mentionee._id, 'mention');
// Create notification
notify(mentionee._id, user._id, 'mention', {
post_id: post._id
});
return;
}));
}
// Register to search database
if (text && config.elasticsearch.enable) {
const es = require('../../../db/elasticsearch');
es.index({
index: 'misskey',
type: 'post',
id: post._id.toString(),
body: {
text: post.text
}
});
}
// Append mentions data
if (mentions.length > 0) {
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Post.update({ _id: post._id }, {
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$set: {
mentions: mentions
}
});
}
});