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import Channel from '../../models/channel';
import Following from '../../models/following';
import ChannelWatching from '../../models/channel-watching';
import Post, { pack } from '../../models/post';
import User, { isLocalUser } from '../../models/user';
import stream, { publishChannelStream } from '../../publishers/stream';
import context from '../../remote/activitypub/renderer/context';
import renderNote from '../../remote/activitypub/renderer/note';
import request from '../../remote/request';
export default ({ data }) => Post.findOne({ _id: data.id }).then(post => {
const promisedPostObj = pack(post);
const promises = [];
// タイムラインへの投稿
if (!post.channelId) {
promises.push(
// Publish event to myself's stream
promisedPostObj.then(postObj => {
stream(post.userId, 'post', postObj);
}),
Promise.all([
User.findOne({ _id: post.userId }),
// Fetch all followers
Following.aggregate([
{
$lookup: {
from: 'users',
localField: 'followerId',
foreignField: '_id',
as: 'follower'
}
},
{
$match: {
followeeId: post.userId
}
}
], {
_id: false
})
]).then(([user, followers]) => Promise.all(followers.map(following => {
if (isLocalUser(following.follower)) {
// Publish event to followers stream
return promisedPostObj.then(postObj => {
stream(following.followerId, 'post', postObj);
});
}
return renderNote(user, post).then(rendered => {
rendered['@context'] = context;
return request(user, following.follower[0].account.inbox, rendered);
});
})))
);
}
// チャンネルへの投稿
if (post.channelId) {
promises.push(
// Increment channel index(posts count)
Channel.update({ _id: post.channelId }, {
$inc: {
index: 1
}
}),
// Publish event to channel
promisedPostObj.then(postObj => {
publishChannelStream(post.channelId, 'post', postObj);
}),
Promise.all([
promisedPostObj,
// Get channel watchers
ChannelWatching.find({
channelId: post.channelId,
// 削除されたドキュメントは除く
deletedAt: { $exists: false }
})
]).then(([postObj, watches]) => {
// チャンネルの視聴者(のタイムライン)に配信
watches.forEach(w => {
stream(w.userId, 'post', postObj);
});
})
);
}
return Promise.all(promises);
});
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