import { FastifyPluginAsync } from 'fastify';
import { Scope } from 'go-go-scope';

/**
 * Fastify adapter for go-go-scope
 * Provides request-scoped structured concurrency for Fastify applications
 */

declare module "fastify" {
    interface FastifyInstance {
        scope: Scope;
    }
    interface FastifyRequest {
        scope: Scope;
    }
}
interface FastifyGoGoScopeOptions {
    /** Root scope name */
    name?: string;
    /** Default timeout for all requests */
    timeout?: number;
}
/**
 * Fastify plugin for go-go-scope integration
 *
 * @example
 * ```typescript
 * import fastify from 'fastify'
 * import { fastifyGoGoScope } from '@go-go-scope/adapter-fastify'
 *
 * const app = fastify()
 * await app.register(fastifyGoGoScope, { metrics: true })
 *
 * app.get('/users/:id', async (request, reply) => {
 *   const [err, user] = await request.scope.task(
 *     () => fetchUser(request.params.id),
 *     { retry: 'exponential', timeout: 5000 }
 *   )
 *
 *   if (err) {
 *     return reply.code(500).send({ error: err.message })
 *   }
 *   return user
 * })
 * ```
 */
declare const fastifyGoGoScope: FastifyPluginAsync<FastifyGoGoScopeOptions>;

export { fastifyGoGoScope };
export type { FastifyGoGoScopeOptions };