487 lines
12 KiB
TypeScript
487 lines
12 KiB
TypeScript
/**
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* Module dependencies
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*/
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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 { default as Post, IPost, isValidText } from '../../models/post';
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import { default as User, IUser } from '../../models/user';
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import { default as Channel, IChannel } from '../../models/channel';
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import Following from '../../models/following';
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import DriveFile from '../../models/drive-file';
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import Watching from '../../models/post-watching';
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import ChannelWatching from '../../models/channel-watching';
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import serialize from '../../serializers/post';
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import notify from '../../common/notify';
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import watch from '../../common/watch-post';
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import event, { pushSw, publishChannelStream } from '../../event';
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import config from '../../../conf';
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/**
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* Create a post
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*
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* @param {any} params
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* @param {any} user
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* @param {any} app
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* @return {Promise<any>}
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*/
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module.exports = (params, user: IUser, 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
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// forEach だと途中でエラーなどがあっても return できないので
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// 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
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// SELECT _id
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const entity = await DriveFile.findOne({
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_id: mediaId,
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'metadata.user_id': user._id
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});
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if (entity === null) {
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return rej('file not found');
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} else {
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files.push(entity);
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}
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}
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} else {
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files = null;
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}
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// 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: IPost = null;
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let isQuote = false;
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if (repostId !== undefined) {
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// Fetch repost to post
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repost = await Post.findOne({
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_id: repostId
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});
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if (repost == null) {
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return rej('repostee is not found');
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} else if (repost.repost_id && !repost.text && !repost.media_ids) {
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return rej('cannot repost to repost');
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}
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// Fetch recently post
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const latestPost = await Post.findOne({
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user_id: user._id
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}, {
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sort: {
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_id: -1
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}
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});
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isQuote = text != null || files != null;
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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
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if (latestPost &&
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latestPost.repost_id &&
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latestPost.repost_id.equals(repost._id) &&
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!isQuote) {
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return rej('cannot repost same post that already reposted in your latest post');
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}
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// 直近がRepost対象かつ引用じゃなかったらエラー
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if (latestPost &&
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latestPost._id.equals(repost._id) &&
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!isQuote) {
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return rej('cannot repost your latest post');
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}
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}
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// Get 'reply_id' parameter
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const [replyId, replyIdErr] = $(params.reply_id).optional.id().$;
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if (replyIdErr) return rej('invalid reply_id');
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let reply: IPost = null;
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if (replyId !== undefined) {
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// Fetch reply
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reply = await Post.findOne({
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_id: replyId
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});
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if (reply === null) {
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return rej('in reply to post is not found');
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}
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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 (reply.repost_id && !reply.text && !reply.media_ids) {
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return rej('cannot reply to repost');
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}
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}
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// Get 'channel_id' parameter
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const [channelId, channelIdErr] = $(params.channel_id).optional.id().$;
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if (channelIdErr) return rej('invalid channel_id');
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let channel: IChannel = null;
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if (channelId !== undefined) {
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// Fetch channel
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channel = await Channel.findOne({
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_id: channelId
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});
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if (channel === null) {
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return rej('channel not found');
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}
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// 返信対象の投稿がこのチャンネルじゃなかったらダメ
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if (reply && !channelId.equals(reply.channel_id)) {
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return rej('チャンネル内部からチャンネル外部の投稿に返信することはできません');
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}
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// Repost対象の投稿がこのチャンネルじゃなかったらダメ
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if (repost && !channelId.equals(repost.channel_id)) {
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return rej('チャンネル内部からチャンネル外部の投稿をRepostすることはできません');
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}
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// 引用ではないRepostはダメ
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if (repost && !isQuote) {
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return rej('チャンネル内部では引用ではないRepostをすることはできません');
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}
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} else {
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// 返信対象の投稿がチャンネルへの投稿だったらダメ
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if (reply && reply.channel_id != null) {
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return rej('チャンネル外部からチャンネル内部の投稿に返信することはできません');
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}
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// Repost対象の投稿がチャンネルへの投稿だったらダメ
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if (repost && repost.channel_id != null) {
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return rej('チャンネル外部からチャンネル内部の投稿をRepostすることはできません');
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}
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}
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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', $().array('string')
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.unique()
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.range(2, 10)
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.each(c => c.length > 0 && c.length < 50))
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.$;
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if (pollErr) return rej('invalid poll');
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if (poll) {
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(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
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}));
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}
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// 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
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// TODO: 直近の投稿が一日前くらいなら重複とは見なさない
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if (user.latest_post) {
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if (deepEqual({
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text: user.latest_post.text,
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reply: user.latest_post.reply_id ? user.latest_post.reply_id.toString() : null,
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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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}, {
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text: text,
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reply: reply ? reply._id.toString() : null,
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repost: repost ? repost._id.toString() : null,
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media_ids: (files || []).map(file => file._id.toString())
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})) {
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return rej('duplicate');
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}
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}
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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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channel_id: channel ? channel._id : undefined,
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index: channel ? channel.index + 1 : undefined,
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media_ids: files ? files.map(file => file._id) : undefined,
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reply_id: reply ? reply._id : undefined,
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repost_id: repost ? repost._id : undefined,
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poll: poll,
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text: text,
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user_id: user._id,
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app_id: app ? app._id : null
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});
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// Serialize
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const postObj = await serialize(post);
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// Reponse
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res({
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created_post: postObj
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});
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//#region Post processes
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User.update({ _id: user._id }, {
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$set: {
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latest_post: post
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}
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});
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const mentions = [];
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function addMention(mentionee, reason) {
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// Reject if already added
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if (mentions.some(x => x.equals(mentionee))) return;
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// Add mention
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mentions.push(mentionee);
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// Publish event
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if (!user._id.equals(mentionee)) {
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event(mentionee, reason, postObj);
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pushSw(mentionee, reason, postObj);
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}
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}
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// タイムラインへの投稿
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if (!channel) {
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// Publish event to myself's stream
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event(user._id, 'post', postObj);
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// Fetch all followers
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const followers = await Following
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.find({
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followee_id: user._id,
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// 削除されたドキュメントは除く
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deleted_at: { $exists: false }
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}, {
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follower_id: true,
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_id: false
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});
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// Publish event to followers stream
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followers.forEach(following =>
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event(following.follower_id, 'post', postObj));
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}
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// チャンネルへの投稿
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if (channel) {
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// Increment channel index(posts count)
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Channel.update({ _id: channel._id }, {
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$inc: {
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index: 1
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}
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});
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// Publish event to channel
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publishChannelStream(channel._id, 'post', postObj);
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// Get channel watchers
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const watches = await ChannelWatching.find({
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channel_id: channel._id,
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// 削除されたドキュメントは除く
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deleted_at: { $exists: false }
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});
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// チャンネルの視聴者(のタイムライン)に配信
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watches.forEach(w => {
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event(w.user_id, 'post', postObj);
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});
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}
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// Increment my posts count
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User.update({ _id: user._id }, {
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$inc: {
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posts_count: 1
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}
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});
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// If has in reply to post
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if (reply) {
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// Increment replies count
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Post.update({ _id: reply._id }, {
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$inc: {
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replies_count: 1
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}
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});
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// 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(reply.user_id, user._id, 'reply', {
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post_id: post._id
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});
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// Fetch watchers
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Watching
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.find({
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post_id: reply._id,
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user_id: { $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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deleted_at: { $exists: false }
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}, {
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fields: {
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user_id: true
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}
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})
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.then(watchers => {
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watchers.forEach(watcher => {
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notify(watcher.user_id, user._id, 'reply', {
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post_id: post._id
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});
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});
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});
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// この投稿をWatchする
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// TODO: ユーザーが「返信したときに自動でWatchする」設定を
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// オフにしていた場合はしない
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watch(user._id, reply);
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// Add mention
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addMention(reply.user_id, 'reply');
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}
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// If it is repost
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if (repost) {
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// Notify
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const type = text ? 'quote' : 'repost';
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notify(repost.user_id, user._id, type, {
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post_id: post._id
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});
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// Fetch watchers
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Watching
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.find({
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post_id: repost._id,
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user_id: { $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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deleted_at: { $exists: false }
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}, {
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fields: {
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user_id: true
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}
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})
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.then(watchers => {
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watchers.forEach(watcher => {
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notify(watcher.user_id, user._id, type, {
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post_id: post._id
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});
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});
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});
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// この投稿をWatchする
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// TODO: ユーザーが「Repostしたときに自動でWatchする」設定を
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// オフにしていた場合はしない
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watch(user._id, repost);
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// If it is quote repost
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if (text) {
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// Add mention
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addMention(repost.user_id, 'quote');
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} else {
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// Publish event
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if (!user._id.equals(repost.user_id)) {
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event(repost.user_id, 'repost', postObj);
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}
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}
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// 今までで同じ投稿をRepostしているか
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const existRepost = await Post.findOne({
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user_id: user._id,
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repost_id: repost._id,
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_id: {
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$ne: post._id
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}
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});
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if (!existRepost) {
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// Update repostee status
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Post.update({ _id: repost._id }, {
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$inc: {
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repost_count: 1
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}
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});
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}
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}
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// If has text content
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if (text) {
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// Analyze
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const tokens = parse(text);
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/*
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// Extract a hashtags
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const hashtags = tokens
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.filter(t => t.type == 'hashtag')
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.map(t => t.hashtag)
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// Drop dupulicates
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.filter((v, i, s) => s.indexOf(v) == i);
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// ハッシュタグをデータベースに登録
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registerHashtags(user, hashtags);
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*/
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// Extract an '@' mentions
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const atMentions = tokens
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.filter(t => t.type == 'mention')
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.map(m => m.username)
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// Drop dupulicates
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.filter((v, i, s) => s.indexOf(v) == i);
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// Resolve all mentions
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await Promise.all(atMentions.map(async (mention) => {
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// Fetch mentioned user
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// SELECT _id
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const mentionee = await User
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.findOne({
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username_lower: mention.toLowerCase()
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}, { _id: true });
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// When mentioned user not found
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if (mentionee == null) return;
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// 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 (reply && reply.user_id.equals(mentionee._id)) return;
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if (repost && repost.user_id.equals(mentionee._id)) return;
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// Add mention
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addMention(mentionee._id, 'mention');
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// Create notification
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notify(mentionee._id, user._id, 'mention', {
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post_id: post._id
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});
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return;
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}));
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}
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// Register to search database
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if (text && config.elasticsearch.enable) {
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const es = require('../../../db/elasticsearch');
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es.index({
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index: 'misskey',
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type: 'post',
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id: post._id.toString(),
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body: {
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text: post.text
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}
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});
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}
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// Append mentions data
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if (mentions.length > 0) {
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Post.update({ _id: post._id }, {
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$set: {
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mentions: mentions
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}
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});
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}
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//#endregion
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});
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