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1export type ResolvedIdentity =
2 | {
3 handle: string
4 did: string
5 pdsUrl: string
6 }
7 | undefined
8const HANDLE_DID_CACHE_TIMEOUT = 60 * 60 * 1000; // 1 hour
9export async function cachedResolveIdentity({
10 didOrHandle,
11 cacheTimeout = HANDLE_DID_CACHE_TIMEOUT,
12 get,
13 set,
14}: {
15 didOrHandle: string;
16 cacheTimeout?: number;
17 get: (key: string) => any;
18 set: (key: string, value: string) => void;
19}): Promise<ResolvedIdentity|undefined> {
20 const isDidInput = didOrHandle.startsWith("did:");
21 const cacheKey = `handleDid:${didOrHandle}`;
22 const now = Date.now();
23 const cached = get(cacheKey);
24 if (
25 cached &&
26 cached.value &&
27 cached.time &&
28 now - cached.time < cacheTimeout
29 ) {
30 try {
31 return JSON.parse(cached.value);
32 } catch {}
33 }
34 const url = `https://free-fly-24.deno.dev/?${
35 isDidInput
36 ? `did=${encodeURIComponent(didOrHandle)}`
37 : `handle=${encodeURIComponent(didOrHandle)}`
38 }`;
39 const res = await fetch(url);
40 if (!res.ok) throw new Error("Failed to resolve handle/did");
41 const data = await res.json();
42 set(cacheKey, JSON.stringify(data));
43 // also cache by did if input was handle
44 if (!isDidInput && data.did) {
45 set(`handleDid:${data.did}`, JSON.stringify(data));
46 }
47 return data;
48}
49
50export async function resolveIdentity({
51 didOrHandle,
52}: {
53 didOrHandle: string;
54}): Promise<ResolvedIdentity|undefined> {
55 const isDidInput = didOrHandle.startsWith("did:");
56 const url = `https://free-fly-24.deno.dev/?${
57 isDidInput
58 ? `did=${encodeURIComponent(didOrHandle)}`
59 : `handle=${encodeURIComponent(didOrHandle)}`
60 }`;
61 const res = await fetch(url);
62 if (!res.ok) throw new Error("Failed to resolve handle/did");
63 const data = await res.json();
64 return data;
65}