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Monorepo for Tangled forked from tangled.org/core
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182import { CompositeHandleResolver, DohJsonHandleResolver, FailedHandleResolutionError, WellKnownHandleResolver, XrpcHandleResolver, type HandleResolver} from "@atcute/identity-resolver";import type { AtprotoDid } from "@atcute/lexicons/syntax";import { createBobbinClient, type BobbinContext } from "#lib/api/client.ts";import { fetchMiniDoc } from "#lib/api/identity.ts";
export const handleResolverUrls = (raw: string | undefined): string[] => (raw ?? "") .split(",") .map((url) => url.trim().replace(/\/+$/, "")) .filter(Boolean);
const handleResolverFromTheNetwork = (bobbinUrl: () => string): HandleResolver => new FallbackHandleResolver([ new CompositeHandleResolver({ methods: { dns: new DohJsonHandleResolver({ dohUrl: "https://cloudflare-dns.com/dns-query" }), http: new WellKnownHandleResolver() } }), bobbinHandleResolver(bobbinUrl) ]);
const fetchHandleDid = async ( ctx: BobbinContext, handle: string, signal?: AbortSignal): Promise<AtprotoDid> => { const doc = await fetchMiniDoc(ctx, handle, { signal }); return doc.did as AtprotoDid;};
const bobbinHandleResolver = (bobbinUrl: () => string): HandleResolver => ({ resolve: (handle, options) => fetchHandleDid( createBobbinClient({ serviceUrl: bobbinUrl() }), handle, options?.signal ).catch((cause: unknown) => { throw new FailedHandleResolutionError(handle, { cause }); })});
export class FallbackHandleResolver implements HandleResolver { readonly #resolvers: HandleResolver[];
constructor(resolvers: HandleResolver[]) { this.#resolvers = resolvers; }
async resolve(...args: Parameters<HandleResolver["resolve"]>) { let failure: unknown; for (const resolver of this.#resolvers) { try { return await resolver.resolve(...args); } catch (cause) { if (args[1]?.signal?.aborted) throw cause; failure = cause; } } throw failure; }}
export const handleResolverFor = (urls: string[], bobbinUrl: () => string): HandleResolver => urls.length === 0 ? handleResolverFromTheNetwork(bobbinUrl) : urls.length === 1 ? new XrpcHandleResolver({ serviceUrl: urls[0] as `${string}:${string}` }) : new FallbackHandleResolver( urls.map( (url) => new XrpcHandleResolver({ serviceUrl: url as `${string}:${string}` }) ) );