Jon Staab
92 lines
2.8 KiB
TypeScript
92 lines
2.8 KiB
TypeScript
import {tryCatch, batcher, postJson} from "@welshman/lib"
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import type {Maybe} from "@welshman/lib"
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import {queryProfile, displayNip05} from "@welshman/util"
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import type {Handle} from "@welshman/util"
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import type {Profile} from "@welshman/domain"
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import {deriveDeduplicated} from "@welshman/store"
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import {LoadableMapPlugin, projection} from "./base.js"
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import type {Projection} from "./base.js"
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import type {IApp} from "../app.js"
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import {Profiles} from "./profiles.js"
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/**
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* NIP-05 handles, keyed by nip05 identifier. A "local" loadable collection:
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* items aren't nostr events, they're fetched over HTTP (either directly from
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* each domain's `.well-known/nostr.json`, or via a dufflepud proxy to protect
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* user privacy). Depends on the profiles collection to resolve a pubkey's
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* handle.
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*/
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export class Handles extends LoadableMapPlugin<Handle> {
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constructor(app: IApp) {
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super(app)
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}
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fetch = batcher(800, async (nip05s: string[]) => {
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const result = new Map<string, Handle>()
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// Use dufflepud if it's set up to protect user privacy, otherwise fetch directly
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if (this.app.config.dufflepudUrl) {
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const res: any = await tryCatch(
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async () =>
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await postJson(`${this.app.config.dufflepudUrl}/handle/info`, {handles: nip05s}),
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)
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for (const {handle: nip05, info} of res?.data || []) {
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if (info) {
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result.set(nip05, {...info, nip05})
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}
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}
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} else {
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const results = await Promise.all(
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nip05s.map(async nip05 => ({
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nip05,
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info: await tryCatch(async () => await queryProfile(nip05)),
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})),
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)
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for (const {nip05, info} of results) {
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if (info) {
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result.set(nip05, {...info, nip05})
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}
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}
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}
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for (const [nip05, info] of result) {
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this.set(nip05, info)
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}
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return nip05s.map(nip05 => result.get(nip05))
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})
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loadForPubkey = async (pubkey: string, relays: string[] = []) => {
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const $profile = await this.app.use(Profiles).load(pubkey, relays)
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const nip05 = $profile?.nip05()
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return nip05 ? this.load(nip05) : undefined
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}
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forPubkey = (pubkey: string, relays: string[] = []): Projection<Maybe<Handle>> => {
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this.loadForPubkey(pubkey, relays)
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const read = ([$handlesByNip05, $profile]: [ReadonlyMap<string, Handle>, Maybe<Profile>]) => {
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const nip05 = $profile?.nip05()
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if (!nip05) return undefined
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const handle = $handlesByNip05.get(nip05)
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if (handle?.pubkey !== pubkey) return undefined
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return handle
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}
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return projection(
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deriveDeduplicated([this.index.$, this.app.use(Profiles).one(pubkey, relays)], read),
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() => read([this.index.get(), this.app.use(Profiles).get(pubkey)]),
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)
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}
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display = (nip05: string) => displayNip05(nip05)
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}
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