1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
import { ApObject, getApIds } from './type';
import Resolver from './resolver';
import { resolvePerson } from './models/person';
import { unique, concat } from '../../prelude/array';
import * as promiseLimit from 'promise-limit';
import { User, IRemoteUser } from '../../models/entities/user';
type Visibility = 'public' | 'home' | 'followers' | 'specified';
type AudienceInfo = {
visibility: Visibility,
mentionedUsers: User[],
visibleUsers: User[],
};
export async function parseAudience(actor: IRemoteUser, to?: ApObject, cc?: ApObject, resolver?: Resolver): Promise<AudienceInfo> {
const toGroups = groupingAudience(getApIds(to), actor);
const ccGroups = groupingAudience(getApIds(cc), actor);
const others = unique(concat([toGroups.other, ccGroups.other]));
const limit = promiseLimit<User | null>(2);
const mentionedUsers = (await Promise.all(
others.map(id => limit(() => resolvePerson(id, resolver).catch(() => null)))
)).filter((x): x is User => x != null);
if (toGroups.public.length > 0) {
return {
visibility: 'public',
mentionedUsers,
visibleUsers: []
};
}
if (ccGroups.public.length > 0) {
return {
visibility: 'home',
mentionedUsers,
visibleUsers: []
};
}
if (toGroups.followers.length > 0) {
return {
visibility: 'followers',
mentionedUsers,
visibleUsers: []
};
}
return {
visibility: 'specified',
mentionedUsers,
visibleUsers: mentionedUsers
};
}
function groupingAudience(ids: string[], actor: IRemoteUser) {
const groups = {
public: [] as string[],
followers: [] as string[],
other: [] as string[],
};
for (const id of ids) {
if (isPublic(id)) {
groups.public.push(id);
} else if (isFollowers(id, actor)) {
groups.followers.push(id);
} else {
groups.other.push(id);
}
}
groups.other = unique(groups.other);
return groups;
}
function isPublic(id: string) {
return [
'https://www.w3.org/ns/activitystreams#Public',
'as#Public',
'Public',
].includes(id);
}
function isFollowers(id: string, actor: IRemoteUser) {
return [
`${actor.uri}/followers`,
// actor.followerUri, // TODO
].includes(id);
}
|
