import {
	configureOAuth,
	defaultIdentityResolver,
} from '@atcute/oauth-browser-client';
import {
	CompositeDidDocumentResolver,
	PlcDidDocumentResolver,
	WebDidDocumentResolver,
	XrpcHandleResolver,
} from '@atcute/identity-resolver';

export interface GuestbookConfig {
	oauth: {
		clientId: string;
		redirectUri: string;
		scope: string;
	};
	services?: {
		handleResolver?: string;
	};
}

let configured = false;
let storedConfig: GuestbookConfig | null = null;

/**
 * Configure the guestbook components with OAuth settings.
 * Must be called before using <guestbook-sign>.
 */
export function configureGuestbook(config: GuestbookConfig) {
	if (configured) {
		console.warn('Guestbook already configured');
		return;
	}

	storedConfig = config;

	configureOAuth({
		metadata: {
			client_id: config.oauth.clientId,
			redirect_uri: config.oauth.redirectUri,
		},
		identityResolver: defaultIdentityResolver({
			handleResolver: new XrpcHandleResolver({ 
				serviceUrl: config.services?.handleResolver ?? 'https://slingshot.wisp.place' 
			}),
			didDocumentResolver: new CompositeDidDocumentResolver({
				methods: {
					plc: new PlcDidDocumentResolver(),
					web: new WebDidDocumentResolver(),
				},
			}),
		}),
	});

	configured = true;
}

/**
 * Check if guestbook has been configured
 */
export function isConfigured(): boolean {
	return configured;
}

/**
 * Get the stored config
 */
export function getConfig(): GuestbookConfig | null {
	return storedConfig;
}