import { KVStorageHttp } from '../../src/kv-storage/kv-storage-http.js'
import { KVStorageHttpServer, type KVStorageHttpServerOptions } from '../../src/kv-storage/kv-storage-http-server.js'
import { KVStorageInMemory } from '../../src/kv-storage/kv-storage-in-memory.js'
import { KVStorageCounting } from '../helpers.js'

/**
 * An in-process server with a network switch. While `online` is false, new requests fail like a
 * dropped connection (open SSE streams stay up, so pushes can still be simulated).
 */
export class TestNetwork {
  online = true
  readonly store = new KVStorageCounting(new KVStorageInMemory())
  readonly server: KVStorageHttpServer
  private readonly clients: KVStorageHttp[] = []

  constructor(options: KVStorageHttpServerOptions = {}) {
    this.server = new KVStorageHttpServer(this.store, options)
  }

  client(): KVStorageHttp {
    const client = new KVStorageHttp({
      url: 'http://server',
      fetch: async (url, init) => {
        if (!this.online) throw new TypeError('fetch failed')
        return this.server.handle(new Request(url, init))
      },
    })
    this.clients.push(client)
    return client
  }

  async close(): Promise<void> {
    await Promise.all(this.clients.map((c) => c.unwatch()))
  }
}