Sharkey/src/remote/activitypub/resolver.ts
Akihiko Odaki c22cb37759 Remove resolveRemoteUserObjects method of remote/activitypub/resolver
The value of the value returned by resolveRemoteUserObjects method of
remote/activitypub/resolver was inconsistent.
2018-04-03 20:41:54 +09:00

70 lines
1.5 KiB
TypeScript

const request = require('request-promise-native');
export default class Resolver {
private requesting: Set<string>;
constructor(iterable?: Iterable<string>) {
this.requesting = new Set(iterable);
}
private async resolveUnrequestedOne(value) {
if (typeof value !== 'string') {
return { resolver: this, object: value };
}
const resolver = new Resolver(this.requesting);
resolver.requesting.add(value);
const object = await request({
url: value,
headers: {
Accept: 'application/activity+json, application/ld+json'
},
json: true
});
if (object === null || (
Array.isArray(object['@context']) ?
!object['@context'].includes('https://www.w3.org/ns/activitystreams') :
object['@context'] !== 'https://www.w3.org/ns/activitystreams'
)) {
throw new Error();
}
return { resolver, object };
}
public async resolveCollection(value) {
const resolved = typeof value === 'string' ?
await this.resolveUnrequestedOne(value) :
{ resolver: this, object: value };
switch (resolved.object.type) {
case 'Collection':
resolved.object = resolved.object.items;
break;
case 'OrderedCollection':
resolved.object = resolved.object.orderedItems;
break;
default:
if (!Array.isArray(value)) {
resolved.object = [resolved.object];
}
break;
}
return resolved;
}
public resolveOne(value) {
if (this.requesting.has(value)) {
throw new Error();
}
return this.resolveUnrequestedOne(value);
}
}