import type { ClientIdentity, ResolverOptions } from "@matey/client";

export interface AppConfig {
  client: ClientIdentity;
  resolver: ResolverOptions;
  /** Suggested homeserver for the "create an account" path (spec §5.4.1). */
  defaultHomeserver: string | null;
  handleResolver: string;
  /** URL of a hosted atproto client-metadata document; loopback client when absent. */
  atpClientId: string | null;
  /** Matey broker issuer, for the login-hint relay (Tuwunel drops login_hint). */
  brokerIssuer: string | null;
}

export function loadAppConfig(): AppConfig {
  const env = import.meta.env as Record<string, string | undefined>;
  const handleResolver = env.VITE_HANDLE_RESOLVER ?? "https://public.api.bsky.app";
  const resolver: ResolverOptions = { handleResolver };
  if (env.VITE_PLC_DIRECTORY !== undefined) resolver.plcDirectory = env.VITE_PLC_DIRECTORY;
  return {
    client: {
      clientName: "Matey Counter",
      clientUri: window.location.origin,
      redirectUri: `${window.location.origin}/callback`,
    },
    resolver,
    defaultHomeserver: env.VITE_DEFAULT_HOMESERVER ?? null,
    handleResolver,
    atpClientId: env.VITE_ATP_CLIENT_ID ?? null,
    brokerIssuer: env.VITE_MATEY_BROKER ?? null,
  };
}