// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

class HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    if (!data || typeof data !== 'object') {
      throw 'First parameter is expected to be an object';
    }
  }

  /**
   * @param {*} data
   * @return {!Date}
   */
  static _safeDate(data) {
    const date = new Date(data);
    if (!Number.isNaN(date.getTime())) {
      return date;
    }
    throw 'Invalid date format';
  }

  /**
   * @param {*} data
   * @return {number}
   */
  static _safeNumber(data) {
    const result = Number(data);
    if (!Number.isNaN(result)) {
      return result;
    }
    throw 'Casting to number results in NaN';
  }

  /**
   * @param {*} data
   * @return {number|undefined}
   */
  static _optionalNumber(data) {
    return data !== undefined ? HARBase._safeNumber(data) : undefined;
  }

  /**
   * @param {*} data
   * @return {string|undefined}
   */
  static _optionalString(data) {
    return data !== undefined ? String(data) : undefined;
  }

  /**
   * @param {string} name
   * @return {string|undefined}
   */
  customAsString(name) {
    // Har specification says starting with '_' is a custom property, but closure uses '_' as a private property.
    const value = /** @type {!Object} */ (this)['_' + name];
    return value !== undefined ? String(value) : undefined;
  }

  /**
   * @param {string} name
   * @return {number|undefined}
   */
  customAsNumber(name) {
    // Har specification says starting with '_' is a custom property, but closure uses '_' as a private property.
    let value = /** @type {!Object} */ (this)['_' + name];
    if (value === undefined) {
      return;
    }
    value = Number(value);
    if (Number.isNaN(value)) {
      return;
    }
    return value;
  }

  /**
   * @param {string} name
   * @return {!Array|undefined}
   */
  customAsArray(name) {
    const value = /** @type {!Object} */ (this)['_' + name];
    return Array.isArray(value) ? value : undefined;
  }
}

export class HARRoot extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.log = new HARLog(data['log']);
  }
}

export class HARLog extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.version = String(data['version']);
    this.creator = new HARCreator(data['creator']);
    this.browser = data['browser'] ? new HARCreator(data['browser']) : undefined;
    this.pages = Array.isArray(data['pages']) ? data['pages'].map(page => new HARImporter.HARPage(page)) : [];
    if (!Array.isArray(data['entries'])) {
      throw 'log.entries is expected to be an array';
    }
    this.entries = data['entries'].map(entry => new HAREntry(entry));
    this.comment = HARBase._optionalString(data['comment']);
  }
}

class HARCreator extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.name = String(data['name']);
    this.version = String(data['version']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

export class HARPage extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.startedDateTime = HARBase._safeDate(data['startedDateTime']);
    this.id = String(data['id']);
    this.title = String(data['title']);
    this.pageTimings = new HARPageTimings(data['pageTimings']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

class HARPageTimings extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.onContentLoad = HARBase._optionalNumber(data['onContentLoad']);
    this.onLoad = HARBase._optionalNumber(data['onLoad']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

export class HAREntry extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.pageref = HARBase._optionalString(data['pageref']);
    this.startedDateTime = HARBase._safeDate(data['startedDateTime']);
    this.time = HARBase._safeNumber(data['time']);
    this.request = new HARRequest(data['request']);
    this.response = new HARResponse(data['response']);
    this.cache = {};  // Not yet implemented.
    this.timings = new HARTimings(data['timings']);
    this.serverIPAddress = HARBase._optionalString(data['serverIPAddress']);
    this.connection = HARBase._optionalString(data['connection']);
    this.comment = HARBase._optionalString(data['comment']);

    // Chrome specific.
    this._fromCache = HARBase._optionalString(data['_fromCache']);
    this._initiator = this._importInitiator(data['_initiator']);
    this._priority = HARBase._optionalString(data['_priority']);
    this._resourceType = HARBase._optionalString(data['_resourceType']);
    this._webSocketMessages = this._importWebSocketMessages(data['_webSocketMessages']);
  }

  /**
   * @param {*} initiator
   * @return {!HARImporter.HARInitiator|undefined}
   */
  _importInitiator(initiator) {
    if (typeof initiator !== 'object') {
      return;
    }

    return new HARInitiator(initiator);
  }

  /**
   * @param {*} inputMessages
   * @return {!Array<!HARImporter.HARInitiator>|undefined}
   */
  _importWebSocketMessages(inputMessages) {
    if (!Array.isArray(inputMessages)) {
      return;
    }

    const outputMessages = [];
    for (const message of inputMessages) {
      if (typeof message !== 'object') {
        return;
      }
      outputMessages.push(new HARWebSocketMessage(message));
    }
    return outputMessages;
  }
}

class HARRequest extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.method = String(data['method']);
    this.url = String(data['url']);
    this.httpVersion = String(data['httpVersion']);
    this.cookies = Array.isArray(data['cookies']) ? data['cookies'].map(cookie => new HARCookie(cookie)) : [];
    this.headers = Array.isArray(data['headers']) ? data['headers'].map(header => new HARHeader(header)) : [];
    this.queryString = Array.isArray(data['queryString']) ? data['queryString'].map(qs => new HARQueryString(qs)) : [];
    this.postData = data['postData'] ? new HARPostData(data['postData']) : undefined;
    this.headersSize = HARBase._safeNumber(data['headersSize']);
    this.bodySize = HARBase._safeNumber(data['bodySize']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

class HARResponse extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.status = HARBase._safeNumber(data['status']);
    this.statusText = String(data['statusText']);
    this.httpVersion = String(data['httpVersion']);
    this.cookies = Array.isArray(data['cookies']) ? data['cookies'].map(cookie => new HARCookie(cookie)) : [];
    this.headers = Array.isArray(data['headers']) ? data['headers'].map(header => new HARHeader(header)) : [];
    this.content = new HARContent(data['content']);
    this.redirectURL = String(data['redirectURL']);
    this.headersSize = HARBase._safeNumber(data['headersSize']);
    this.bodySize = HARBase._safeNumber(data['bodySize']);
    this.comment = HARBase._optionalString(data['comment']);

    // Chrome specific.
    this._transferSize = HARBase._optionalNumber(data['_transferSize']);
    this._error = HARBase._optionalString(data['_error']);
  }
}

class HARCookie extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.name = String(data['name']);
    this.value = String(data['value']);
    this.path = HARBase._optionalString(data['path']);
    this.domain = HARBase._optionalString(data['domain']);
    this.expires = data['expires'] ? HARBase._safeDate(data['expires']) : undefined;
    this.httpOnly = data['httpOnly'] !== undefined ? !!data['httpOnly'] : undefined;
    this.secure = data['secure'] !== undefined ? !!data['secure'] : undefined;
    this.comment = HARBase._optionalString(data['comment']);
  }
}

class HARHeader extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.name = String(data['name']);
    this.value = String(data['value']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

class HARQueryString extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.name = String(data['name']);
    this.value = String(data['value']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

class HARPostData extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.mimeType = String(data['mimeType']);
    this.params = Array.isArray(data['params']) ? data['params'].map(param => new HARImporter.HARParam(param)) : [];
    this.text = String(data['text']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

export class HARParam extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.name = String(data['name']);
    this.value = HARBase._optionalString(data['value']);
    this.fileName = HARBase._optionalString(data['fileName']);
    this.contentType = HARBase._optionalString(data['contentType']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

class HARContent extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.size = HARBase._safeNumber(data['size']);
    this.compression = HARBase._optionalNumber(data['compression']);
    this.mimeType = String(data['mimeType']);
    this.text = HARBase._optionalString(data['text']);
    this.encoding = HARBase._optionalString(data['encoding']);
    this.comment = HARBase._optionalString(data['comment']);
  }
}

export class HARTimings extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.blocked = HARBase._optionalNumber(data['blocked']);
    this.dns = HARBase._optionalNumber(data['dns']);
    this.connect = HARBase._optionalNumber(data['connect']);
    this.send = HARBase._safeNumber(data['send']);
    this.wait = HARBase._safeNumber(data['wait']);
    this.receive = HARBase._safeNumber(data['receive']);
    this.ssl = HARBase._optionalNumber(data['ssl']);
    this.comment = HARBase._optionalString(data['comment']);

    // Chrome specific.
    this._blocked_queueing = HARBase._optionalNumber(data['_blocked_queueing']);
    this._blocked_proxy = HARBase._optionalNumber(data['_blocked_proxy']);
  }
}

export class HARInitiator extends HARBase {
  /**
   * Based on Initiator defined in browser_protocol.pdl
   *
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.type = HARBase._optionalString(data['type']);
    this.url = HARBase._optionalString(data['url']);
    this.lineNumber = HARBase._optionalNumber(data['lineNumber']);
  }
}

class HARWebSocketMessage extends HARBase {
  /**
   * @param {*} data
   */
  constructor(data) {
    super(data);
    this.time = HARBase._optionalNumber(data['time']);
    this.opcode = HARBase._optionalNumber(data['opcode']);
    this.data = HARBase._optionalString(data['data']);
    this.type = HARBase._optionalString(data['type']);
  }
}

/* Legacy exported object */
self.HARImporter = self.HARImporter || {};

/* Legacy exported object */
HARImporter = HARImporter || {};

/**
 * @constructor
 */
HARImporter.HARRoot = HARRoot;

/**
 * @constructor
 */
HARImporter.HARLog = HARLog;

/**
 * @constructor
 */
HARImporter.HARPage = HARPage;

/**
 * @constructor
 */
HARImporter.HAREntry = HAREntry;

/**
 * @constructor
 */
HARImporter.HARParam = HARParam;

/**
 * @constructor
 */
HARImporter.HARTimings = HARTimings;

/**
 * @constructor
 */
HARImporter.HARInitiator = HARInitiator;