misskey/packages/backend/src/server/activitypub/following.ts
2022-04-17 20:44:21 +09:00

96 lines
2.7 KiB
TypeScript

import Router from '@koa/router';
import { LessThan, IsNull, FindOptionsWhere } from 'typeorm';
import config from '@/config/index.js';
import * as url from '@/prelude/url.js';
import { renderActivity } from '@/remote/activitypub/renderer/index.js';
import renderOrderedCollection from '@/remote/activitypub/renderer/ordered-collection.js';
import renderOrderedCollectionPage from '@/remote/activitypub/renderer/ordered-collection-page.js';
import renderFollowUser from '@/remote/activitypub/renderer/follow-user.js';
import { Users, Followings, UserProfiles } from '@/models/index.js';
import { Following } from '@/models/entities/following.js';
import { setResponseType } from '../activitypub.js';
export default async (ctx: Router.RouterContext) => {
const userId = ctx.params.user;
const cursor = ctx.request.query.cursor;
if (cursor != null && typeof cursor !== 'string') {
ctx.status = 400;
return;
}
const page = ctx.request.query.page === 'true';
const user = await Users.findOneBy({
id: userId,
host: IsNull(),
});
if (user == null) {
ctx.status = 404;
return;
}
//#region Check ff visibility
const profile = await UserProfiles.findOneByOrFail({ userId: user.id });
if (profile.ffVisibility === 'private') {
ctx.status = 403;
ctx.set('Cache-Control', 'public, max-age=30');
return;
} else if (profile.ffVisibility === 'followers') {
ctx.status = 403;
ctx.set('Cache-Control', 'public, max-age=30');
return;
}
//#endregion
const limit = 10;
const partOf = `${config.url}/users/${userId}/following`;
if (page) {
const query = {
followerId: user.id,
} as FindOptionsWhere<Following>;
// カーソルが指定されている場合
if (cursor) {
query.id = LessThan(cursor);
}
// Get followings
const followings = await Followings.find({
where: query,
take: limit + 1,
order: { id: -1 },
});
// 「次のページ」があるかどうか
const inStock = followings.length === limit + 1;
if (inStock) followings.pop();
const renderedFollowees = await Promise.all(followings.map(following => renderFollowUser(following.followeeId)));
const rendered = renderOrderedCollectionPage(
`${partOf}?${url.query({
page: 'true',
cursor,
})}`,
user.followingCount, renderedFollowees, partOf,
undefined,
inStock ? `${partOf}?${url.query({
page: 'true',
cursor: followings[followings.length - 1].id,
})}` : undefined,
);
ctx.body = renderActivity(rendered);
setResponseType(ctx);
} else {
// index page
const rendered = renderOrderedCollection(partOf, user.followingCount, `${partOf}?page=true`);
ctx.body = renderActivity(rendered);
ctx.set('Cache-Control', 'public, max-age=180');
setResponseType(ctx);
}
};