'use strict';

const { webidl } = require('../fetch/webidl');
const { kEnumerableProperty } = require('../../core/util');
const { kConstruct } = require('../../core/symbols');

/**
 * @see https://html.spec.whatwg.org/multipage/comms.html#messageevent
 */
class MessageEvent extends Event {
  #eventInit;

  constructor(type, eventInitDict = {}) {
    if (type === kConstruct) {
      super(arguments[1], arguments[2]);
      webidl.util.markAsUncloneable(this);
      return;
    }

    const prefix = 'MessageEvent constructor';
    webidl.argumentLengthCheck(arguments, 1, prefix);

    type = webidl.converters.DOMString(type, prefix, 'type');
    eventInitDict = webidl.converters.MessageEventInit(
      eventInitDict,
      prefix,
      'eventInitDict'
    );

    super(type, eventInitDict);

    this.#eventInit = eventInitDict;
    webidl.util.markAsUncloneable(this);
  }

  get data() {
    webidl.brandCheck(this, MessageEvent);

    return this.#eventInit.data;
  }

  get origin() {
    webidl.brandCheck(this, MessageEvent);

    return this.#eventInit.origin;
  }

  get lastEventId() {
    webidl.brandCheck(this, MessageEvent);

    return this.#eventInit.lastEventId;
  }

  get source() {
    webidl.brandCheck(this, MessageEvent);

    return this.#eventInit.source;
  }

  get ports() {
    webidl.brandCheck(this, MessageEvent);

    if (!Object.isFrozen(this.#eventInit.ports)) {
      Object.freeze(this.#eventInit.ports);
    }

    return this.#eventInit.ports;
  }

  initMessageEvent(
    type,
    bubbles = false,
    cancelable = false,
    data = null,
    origin = '',
    lastEventId = '',
    source = null,
    ports = []
  ) {
    webidl.brandCheck(this, MessageEvent);

    webidl.argumentLengthCheck(arguments, 1, 'MessageEvent.initMessageEvent');

    return new MessageEvent(type, {
      bubbles,
      cancelable,
      data,
      origin,
      lastEventId,
      source,
      ports,
    });
  }

  static createFastMessageEvent(type, init) {
    const messageEvent = new MessageEvent(kConstruct, type, init);
    messageEvent.#eventInit = init;
    messageEvent.#eventInit.data ??= null;
    messageEvent.#eventInit.origin ??= '';
    messageEvent.#eventInit.lastEventId ??= '';
    messageEvent.#eventInit.source ??= null;
    messageEvent.#eventInit.ports ??= [];
    return messageEvent;
  }
}

const { createFastMessageEvent } = MessageEvent;
delete MessageEvent.createFastMessageEvent;

/**
 * @see https://websockets.spec.whatwg.org/#the-closeevent-interface
 */
class CloseEvent extends Event {
  #eventInit;

  constructor(type, eventInitDict = {}) {
    const prefix = 'CloseEvent constructor';
    webidl.argumentLengthCheck(arguments, 1, prefix);

    type = webidl.converters.DOMString(type, prefix, 'type');
    eventInitDict = webidl.converters.CloseEventInit(eventInitDict);

    super(type, eventInitDict);

    this.#eventInit = eventInitDict;
    webidl.util.markAsUncloneable(this);
  }

  get wasClean() {
    webidl.brandCheck(this, CloseEvent);

    return this.#eventInit.wasClean;
  }

  get code() {
    webidl.brandCheck(this, CloseEvent);

    return this.#eventInit.code;
  }

  get reason() {
    webidl.brandCheck(this, CloseEvent);

    return this.#eventInit.reason;
  }
}

// https://html.spec.whatwg.org/multipage/webappapis.html#the-errorevent-interface
class ErrorEvent extends Event {
  #eventInit;

  constructor(type, eventInitDict) {
    const prefix = 'ErrorEvent constructor';
    webidl.argumentLengthCheck(arguments, 1, prefix);

    super(type, eventInitDict);
    webidl.util.markAsUncloneable(this);

    type = webidl.converters.DOMString(type, prefix, 'type');
    eventInitDict = webidl.converters.ErrorEventInit(eventInitDict ?? {});

    this.#eventInit = eventInitDict;
  }

  get message() {
    webidl.brandCheck(this, ErrorEvent);

    return this.#eventInit.message;
  }

  get filename() {
    webidl.brandCheck(this, ErrorEvent);

    return this.#eventInit.filename;
  }

  get lineno() {
    webidl.brandCheck(this, ErrorEvent);

    return this.#eventInit.lineno;
  }

  get colno() {
    webidl.brandCheck(this, ErrorEvent);

    return this.#eventInit.colno;
  }

  get error() {
    webidl.brandCheck(this, ErrorEvent);

    return this.#eventInit.error;
  }
}

Object.defineProperties(MessageEvent.prototype, {
  [Symbol.toStringTag]: {
    value: 'MessageEvent',
    configurable: true,
  },
  data: kEnumerableProperty,
  origin: kEnumerableProperty,
  lastEventId: kEnumerableProperty,
  source: kEnumerableProperty,
  ports: kEnumerableProperty,
  initMessageEvent: kEnumerableProperty,
});

Object.defineProperties(CloseEvent.prototype, {
  [Symbol.toStringTag]: {
    value: 'CloseEvent',
    configurable: true,
  },
  reason: kEnumerableProperty,
  code: kEnumerableProperty,
  wasClean: kEnumerableProperty,
});

Object.defineProperties(ErrorEvent.prototype, {
  [Symbol.toStringTag]: {
    value: 'ErrorEvent',
    configurable: true,
  },
  message: kEnumerableProperty,
  filename: kEnumerableProperty,
  lineno: kEnumerableProperty,
  colno: kEnumerableProperty,
  error: kEnumerableProperty,
});

webidl.converters.MessagePort = webidl.interfaceConverter(
  webidl.is.MessagePort,
  'MessagePort'
);

webidl.converters['sequence<MessagePort>'] = webidl.sequenceConverter(
  webidl.converters.MessagePort
);

const eventInit = [
  {
    key: 'bubbles',
    converter: webidl.converters.boolean,
    defaultValue: () => false,
  },
  {
    key: 'cancelable',
    converter: webidl.converters.boolean,
    defaultValue: () => false,
  },
  {
    key: 'composed',
    converter: webidl.converters.boolean,
    defaultValue: () => false,
  },
];

webidl.converters.MessageEventInit = webidl.dictionaryConverter([
  ...eventInit,
  {
    key: 'data',
    converter: webidl.converters.any,
    defaultValue: () => null,
  },
  {
    key: 'origin',
    converter: webidl.converters.USVString,
    defaultValue: () => '',
  },
  {
    key: 'lastEventId',
    converter: webidl.converters.DOMString,
    defaultValue: () => '',
  },
  {
    key: 'source',
    // Node doesn't implement WindowProxy or ServiceWorker, so the only
    // valid value for source is a MessagePort.
    converter: webidl.nullableConverter(webidl.converters.MessagePort),
    defaultValue: () => null,
  },
  {
    key: 'ports',
    converter: webidl.converters['sequence<MessagePort>'],
    defaultValue: () => new Array(0),
  },
]);

webidl.converters.CloseEventInit = webidl.dictionaryConverter([
  ...eventInit,
  {
    key: 'wasClean',
    converter: webidl.converters.boolean,
    defaultValue: () => false,
  },
  {
    key: 'code',
    converter: webidl.converters['unsigned short'],
    defaultValue: () => 0,
  },
  {
    key: 'reason',
    converter: webidl.converters.USVString,
    defaultValue: () => '',
  },
]);

webidl.converters.ErrorEventInit = webidl.dictionaryConverter([
  ...eventInit,
  {
    key: 'message',
    converter: webidl.converters.DOMString,
    defaultValue: () => '',
  },
  {
    key: 'filename',
    converter: webidl.converters.USVString,
    defaultValue: () => '',
  },
  {
    key: 'lineno',
    converter: webidl.converters['unsigned long'],
    defaultValue: () => 0,
  },
  {
    key: 'colno',
    converter: webidl.converters['unsigned long'],
    defaultValue: () => 0,
  },
  {
    key: 'error',
    converter: webidl.converters.any,
  },
]);

module.exports = {
  MessageEvent,
  CloseEvent,
  ErrorEvent,
  createFastMessageEvent,
};