import { Server, ServerOptions } from 'node:https'
import { RequestListener } from 'node:http'
import { EventEmitter } from 'node:events'

export interface KeyMaterial {
  cert: string
  key: string
  certificateAuthority: CertificateAuthority
}

export interface CertificateAuthority {
  certificateFilePath: string
  certificatePem: string
  privateKeyPem: string
  initialise(): string
}

export interface AutoEncryptLocalhostEvents extends EventEmitter {
  INFORMATION: 'information'
  WARNINGS: 'warnings'
  ERRORS: 'errors'

  information: {
    RENEWING: symbol
    HTTP_SERVER_NOTHING_TO_DESTROY: symbol
    HTTP_SERVER_DESTROYING_SERVER: symbol
    HTTP_SERVER_DESTROYED: symbol
    HTTP_SERVER_LISTENING: symbol
    HTTP_SERVER_SERVING_CA_CERTIFICATE: symbol
    HTTP_SERVER_REDIRECTING_TO_HTTPS: symbol
  }

  warnings: {
    UNSUPPORTED_LINUX_SYSTEM_STORE: symbol
    FIREFOX_POLICY_FILE_ALREADY_EXISTS: symbol
    FIREFOX_NOT_FOUND_IN_DEFAULT_LOCATION: symbol
    HTTP_SERVER_PORT_80_BUSY: symbol
  }

  errors: {
    CREATING_FIREFOX_POLICY_FILE: symbol
    HTTP_SERVER_HTTPS_REDIRECT_FAILED: symbol
  }

  onAll(eventType: 'information' | 'warnings' | 'errors', eventHandler: (message: string) => void): void
}

/**
  Monkeypatched server with asynchronous listen() and close() methods.
*/
export interface AutoEncryptedLocalhostServer extends Server {
  close(): Promise<void>
  listen(...args:any[]): Promise<AutoEncryptedLocalhostServer>

  __autoEncryptLocalhost__self: AutoEncryptLocalhost
  __autoEncryptLocalhost__originalClose: Server['close']
}

declare class AutoEncryptLocalhost {
  /**
    By aliasing the https property to the AutoEncryptLocalhost static class itself, we enable
    people to add AutoEncryptLocalhost to their existing apps by importing the module
    and prefixing their https.createServer(…) line with await AutoEncryptLocalhost.
  */
  static get https(): typeof AutoEncryptLocalhost

  static events: AutoEncryptLocalhostEvents
  static getKeyMaterial(settingsPath?: string): KeyMaterial
  static settingsPathWithDefaultFallback(settingsPath?: string): string

  /**
    Automatically provisions trusted development-time (localhost) certificates in Node.js.
  */
  static async createServer(options?: ServerOptions & { settingsPath?: string }, listener?: RequestListener): Promise<AutoEncryptedLocalhostServer>
  static async createServer(listener?: RequestListener): Promise<AutoEncryptedLocalhostServer>
}

export default AutoEncryptLocalhost