import { serverLogger as log } from '$lib/server/logger';
import type { Workspace } from '$lib/types/workspace';

import { env } from '$env/dynamic/private';

import { Auth } from './auth';
import { Catalog } from './catalog';
import { Resources } from './resources';
import { WorkspaceManager } from './workspace';

class Server {
	// Guards against double-init in HMR / test environments.
	#initialized = false;

	#ws!: WorkspaceManager;
	#auth: Auth | undefined;
	#catalog!: Catalog;
	#resources!: Resources;

	async init(): Promise<void> {
		if (this.#initialized) return;
		this.#initialized = true;
		log.info('Server initializing');

		await Promise.all([this.#createWorkspaceManager(), this.#createAuth()]);
		const workspaces = this.#ws.list();
		await Promise.all([this.#createCatalog(workspaces), this.#createResources(workspaces)]);

		log.info('Server ready');
	}

	async shutdown(): Promise<void> {}

	async #createWorkspaceManager(): Promise<void> {
		const ws = new WorkspaceManager();
		await ws.init();
		this.#ws = ws;
	}

	async #createAuth(): Promise<void> {
		if (!env.AUTH_JWT_SECRET || !env.AUTH_USERS_FILE) {
			log.info('Auth is disabled because AUTH_JWT_SECRET or AUTH_USERS_FILE is not set');
			return;
		}
		const auth = new Auth({
			jwtSecret: env.AUTH_JWT_SECRET,
			usersFile: env.AUTH_USERS_FILE,
		});
		log.info(`Auth is enabled, users loaded from ${env.AUTH_USERS_FILE}`);
		await auth.init();
		this.#auth = auth;
	}

	async #createCatalog(workspaces: Workspace[]): Promise<void> {
		const catalog = new Catalog(workspaces);
		await catalog.init();
		this.#catalog = catalog;
	}

	async #createResources(workspaces: Workspace[]): Promise<void> {
		const resources = new Resources(workspaces);
		await resources.init();
		this.#resources = resources;
	}

	get ws(): WorkspaceManager {
		return this.#ws;
	}

	get auth(): Auth | undefined {
		return this.#auth;
	}

	get catalog(): Catalog {
		return this.#catalog;
	}

	get resources(): Resources {
		return this.#resources;
	}
}

// Singleton shared across hooks and route handlers.
const server = new Server();

export { Server, server };