// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as Common from '../../core/common/common.js';
import * as i18n from '../../core/i18n/i18n.js';
import * as SDK from '../../core/sdk/sdk.js';
import * as Protocol from '../../generated/protocol.js';
import * as uiI18n from '../../ui/i18n/i18n.js';
import * as CookieTable from '../../ui/legacy/components/cookie_table/cookie_table.js';
import * as UI from '../../ui/legacy/legacy.js';
import * as Lit from '../../ui/lit/lit.js';
import * as VisualLogging from '../../ui/visual_logging/visual_logging.js';

import requestCookiesViewStyles from './requestCookiesView.css.js';
const {render, html} = Lit;
const {widget} = UI.Widget;

const UIStrings = {
  /**
   * @description Text in Request Cookies View of the Network panel
   */
  thisRequestHasNoCookies: 'This request has no cookies.',
  /**
   * @description Title for a table which shows all of the cookies associated with a selected network
   * request, in the Network panel. Noun phrase.
   */
  requestCookies: 'Request Cookies',
  /**
   * @description Tooltip to explain what request cookies are
   */
  cookiesThatWereSentToTheServerIn: 'Cookies that were sent to the server in the \'cookie\' header of the request',
  /**
   * @description Label for showing request cookies that were not actually sent
   */
  showFilteredOutRequestCookies: 'show filtered out request cookies',
  /**
   * @description Text in Request Headers View of the Network Panel
   */
  noRequestCookiesWereSent: 'No request cookies were sent.',
  /**
   * @description Text in Request Cookies View of the Network panel
   */
  responseCookies: 'Response Cookies',
  /**
   * @description Tooltip to explain what response cookies are
   */
  cookiesThatWereReceivedFromThe:
      'Cookies that were received from the server in the \'`set-cookie`\' header of the response',
  /**
   * @description Label for response cookies with invalid syntax
   */
  malformedResponseCookies: 'Malformed Response Cookies',
  /**
   * @description Tooltip to explain what malformed response cookies are. Malformed cookies are
   * cookies that did not match the expected format and could not be interpreted, and are invalid.
   */
  cookiesThatWereReceivedFromTheServer:
      'Cookies that were received from the server in the \'`set-cookie`\' header of the response but were malformed',

  /**
   * @description Informational text to explain that there were other cookies
   * that were not used and not shown in the list.
   * @example {Learn more} PH1
   *
   */
  siteHasCookieInOtherPartition:
      'This site has cookies in another partition, that were not sent with this request. {PH1}',
  /**
   * @description Title of a link to the developer documentation.
   */
  learnMore: 'Learn more',
} as const;
const str_ = i18n.i18n.registerUIStrings('panels/network/RequestCookiesView.ts', UIStrings);
const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);

interface ViewInput {
  requestCookies: CookieTable.CookiesTable.CookiesTableData;
  responseCookies: CookieTable.CookiesTable.CookiesTableData;
  malformedResponseCookies: SDK.NetworkRequest.BlockedSetCookieWithReason[];
  showFilteredOutCookies: boolean;
  hasBlockedCookies: boolean;
  gotCookies: boolean;
  onShowFilteredOutCookiesChange: (checked: boolean) => void;
  siteHasCookieInOtherPartition: boolean;
}

type ViewFunction = (input: ViewInput, output: undefined, target: HTMLElement) => void;

export const DEFAULT_VIEW: ViewFunction = (input, _output, target) => {
  // clang-format off
  render(
    html`
    <style>${requestCookiesViewStyles}</style>
    <style>${UI.inspectorCommonStyles}</style>
    <div class="request-cookies-view">
      ${input.gotCookies ? Lit.nothing : widget(UI.EmptyWidget.EmptyWidget, {
          header: i18nString(UIStrings.thisRequestHasNoCookies)})}

      <div class=${input.requestCookies.cookies.length || input.hasBlockedCookies ? '' : 'hidden'}>
        <span class="request-cookies-title" title=${i18nString(UIStrings.cookiesThatWereSentToTheServerIn)}>
          ${i18nString(UIStrings.requestCookies)}
        </span>
        <devtools-checkbox
          @change=${(e: Event) => input.onShowFilteredOutCookiesChange((e.target as HTMLInputElement).checked)}
          .checked=${input.showFilteredOutCookies}>
          ${i18nString(UIStrings.showFilteredOutRequestCookies)}
        </devtools-checkbox>
      </div>

      <div class="cookies-panel-item ${!input.requestCookies.cookies.length && input.hasBlockedCookies ? '' : 'hidden'}">
        ${i18nString(UIStrings.noRequestCookiesWereSent)}
      </div>

      ${input.requestCookies.cookies.length > 0 ? html`
        <devtools-widget ${widget(CookieTable.CookiesTable.CookiesTable, {
          cookiesData: input.requestCookies,
          inline: true
        })} class="cookie-table cookies-panel-item"></devtools-widget>
      ` : Lit.nothing}

      <div class="cookies-panel-item site-has-cookies-in-other-partition ${input.siteHasCookieInOtherPartition ? '' : 'hidden'}">
        ${uiI18n.getFormatLocalizedStringTemplate(str_, UIStrings.siteHasCookieInOtherPartition, {
          PH1: html`<devtools-link href="https://developer.chrome.com/en/docs/privacy-sandbox/chips/" .jslogContext=${'learn-more'}>${i18nString(UIStrings.learnMore)}</devtools-link>`
})}
      </div>

      <div class="request-cookies-title ${input.responseCookies.cookies.length ? '' : 'hidden'}"
        title=${i18nString(UIStrings.cookiesThatWereReceivedFromThe)}>
          ${i18nString(UIStrings.responseCookies)}
      </div>

      ${input.responseCookies.cookies.length ? html`
        <devtools-widget ${widget(CookieTable.CookiesTable.CookiesTable, {
          cookiesData: input.responseCookies,
          inline: true })} class="cookie-table cookies-panel-item"></devtools-widget>
      ` : Lit.nothing}

      <div class="request-cookies-title ${input.malformedResponseCookies.length ? '' : 'hidden'}" title=${i18nString(UIStrings.cookiesThatWereReceivedFromTheServer)}>
        ${i18nString(UIStrings.malformedResponseCookies)}
      </div>

      <div class=${input.malformedResponseCookies.length ? '' : 'hidden'}>
        ${input.malformedResponseCookies.map(malformedCookie => html`
          <span class="cookie-line source-code" title=${getMalformedCookieTooltip(malformedCookie)}>
            <devtools-icon class="cookie-warning-icon small" .name=${'cross-circle-filled'}></devtools-icon>
            ${malformedCookie.cookieLine}
          </span>
        `)}
      </div>
    </div>
  `,
  target);
  // clang-format on
};

function getMalformedCookieTooltip(malformedCookie: SDK.NetworkRequest.BlockedSetCookieWithReason): string {
  if (malformedCookie.blockedReasons.includes(Protocol.Network.SetCookieBlockedReason.NameValuePairExceedsMaxSize)) {
    return SDK.NetworkRequest.setCookieBlockedReasonToUiString(
        Protocol.Network.SetCookieBlockedReason.NameValuePairExceedsMaxSize);
  }
  return SDK.NetworkRequest.setCookieBlockedReasonToUiString(Protocol.Network.SetCookieBlockedReason.SyntaxError);
}

export class RequestCookiesView extends UI.Widget.Widget {
  private request: SDK.NetworkRequest.NetworkRequest;
  private readonly showFilteredOutCookiesSetting: Common.Settings.Setting<boolean>;
  private readonly view: ViewFunction;

  constructor(request: SDK.NetworkRequest.NetworkRequest, view: ViewFunction = DEFAULT_VIEW) {
    super({jslog: `${VisualLogging.pane('cookies').track({resize: true})}`});
    this.request = request;
    this.showFilteredOutCookiesSetting = Common.Settings.Settings.instance().createSetting(
        'show-filtered-out-request-cookies', /* defaultValue */ false);
    this.view = view;
  }

  private getRequestCookies(): {
    requestCookies: SDK.Cookie.Cookie[],
    requestCookieToBlockedReasons: Map<SDK.Cookie.Cookie, SDK.CookieModel.BlockedReason[]>,
    requestCookieToExemptionReason: Map<SDK.Cookie.Cookie, SDK.CookieModel.ExemptionReason>,
  } {
    const requestCookieToBlockedReasons = new Map<SDK.Cookie.Cookie, SDK.CookieModel.BlockedReason[]>();
    const requestCookieToExemptionReason = new Map<SDK.Cookie.Cookie, SDK.CookieModel.ExemptionReason>();
    const requestCookies =
        this.request.includedRequestCookies().map(includedRequestCookie => includedRequestCookie.cookie);

    if (this.showFilteredOutCookiesSetting.get()) {
      for (const blockedCookie of this.request.blockedRequestCookies()) {
        requestCookieToBlockedReasons.set(blockedCookie.cookie, blockedCookie.blockedReasons.map(blockedReason => {
          return {
            attribute: SDK.NetworkRequest.cookieBlockedReasonToAttribute(blockedReason),
            uiString: SDK.NetworkRequest.cookieBlockedReasonToUiString(blockedReason),
          };
        }));
        requestCookies.push(blockedCookie.cookie);
      }
    }
    for (const includedCookie of this.request.includedRequestCookies()) {
      if (includedCookie.exemptionReason) {
        requestCookieToExemptionReason.set(includedCookie.cookie, {
          uiString: SDK.NetworkRequest.cookieExemptionReasonToUiString(includedCookie.exemptionReason),
        });
      }
    }
    return {requestCookies, requestCookieToBlockedReasons, requestCookieToExemptionReason};
  }

  private getResponseCookies(): {
    responseCookies: SDK.Cookie.Cookie[],
    responseCookieToBlockedReasons: Map<SDK.Cookie.Cookie, SDK.CookieModel.BlockedReason[]>,
    responseCookieToExemptionReason: Map<SDK.Cookie.Cookie, SDK.CookieModel.ExemptionReason>,
    malformedResponseCookies: SDK.NetworkRequest.BlockedSetCookieWithReason[],
  } {
    let responseCookies: SDK.Cookie.Cookie[] = [];
    const responseCookieToBlockedReasons = new Map<SDK.Cookie.Cookie, SDK.CookieModel.BlockedReason[]>();
    const responseCookieToExemptionReason = new Map<SDK.Cookie.Cookie, SDK.CookieModel.ExemptionReason>();
    const malformedResponseCookies: SDK.NetworkRequest.BlockedSetCookieWithReason[] = [];

    if (this.request.responseCookies.length) {
      responseCookies = this.request.nonBlockedResponseCookies();
      for (const blockedCookie of this.request.blockedResponseCookies()) {
        const parsedCookies = SDK.CookieParser.CookieParser.parseSetCookie(blockedCookie.cookieLine);
        if ((parsedCookies && !parsedCookies.length) ||
            blockedCookie.blockedReasons.includes(Protocol.Network.SetCookieBlockedReason.SyntaxError) ||
            blockedCookie.blockedReasons.includes(
                Protocol.Network.SetCookieBlockedReason.NameValuePairExceedsMaxSize)) {
          malformedResponseCookies.push(blockedCookie);
          continue;
        }

        let cookie: SDK.Cookie.Cookie|(SDK.Cookie.Cookie | null) = blockedCookie.cookie;
        if (!cookie && parsedCookies) {
          cookie = parsedCookies[0];
        }
        if (cookie) {
          responseCookieToBlockedReasons.set(cookie, blockedCookie.blockedReasons.map(blockedReason => {
            return {
              attribute: SDK.NetworkRequest.setCookieBlockedReasonToAttribute(blockedReason),
              uiString: SDK.NetworkRequest.setCookieBlockedReasonToUiString(blockedReason),
            };
          }));
          responseCookies.push(cookie);
        }
      }
      for (const exemptedCookie of this.request.exemptedResponseCookies()) {
        // `responseCookies` are generated from `Set-Cookie` header, which should include the exempted cookies, whereas
        // exempted cookies are received via CDP as objects of type cookie. Therefore they are different objects in
        // DevTools and need to be matched here in order for the rendering logic to be able to lookup a potential
        // exemption reason for a cookie.
        const matchedResponseCookie =
            responseCookies.find(responseCookie => exemptedCookie.cookieLine === responseCookie.getCookieLine());
        if (matchedResponseCookie) {
          responseCookieToExemptionReason.set(matchedResponseCookie, {
            uiString: SDK.NetworkRequest.cookieExemptionReasonToUiString(exemptedCookie.exemptionReason),
          });
        }
      }
    }

    return {responseCookies, responseCookieToBlockedReasons, responseCookieToExemptionReason, malformedResponseCookies};
  }

  override performUpdate(): void {
    if (!this.isShowing()) {
      return;
    }
    const {requestCookies, requestCookieToBlockedReasons, requestCookieToExemptionReason} = this.getRequestCookies();
    const {responseCookies, responseCookieToBlockedReasons, responseCookieToExemptionReason, malformedResponseCookies} =
        this.getResponseCookies();

    const input: ViewInput = {
      gotCookies: this.request.hasRequestCookies() || this.request.responseCookies.length > 0,
      requestCookies: {
        cookies: requestCookies,
        cookieToBlockedReasons: requestCookieToBlockedReasons,
        cookieToExemptionReason: requestCookieToExemptionReason,
      },
      responseCookies: {
        cookies: responseCookies,
        cookieToBlockedReasons: responseCookieToBlockedReasons,
        cookieToExemptionReason: responseCookieToExemptionReason,
      },
      malformedResponseCookies,
      showFilteredOutCookies: this.showFilteredOutCookiesSetting.get(),
      onShowFilteredOutCookiesChange: (checked: boolean) => {
        this.showFilteredOutCookiesSetting.set(checked);
        this.requestUpdate();
      },
      siteHasCookieInOtherPartition: this.request.siteHasCookieInOtherPartition(),
      hasBlockedCookies: this.request.blockedRequestCookies().length > 0,
    };

    this.view(input, undefined, this.contentElement);
  }

  override wasShown(): void {
    super.wasShown();
    this.request.addEventListener(SDK.NetworkRequest.Events.REQUEST_HEADERS_CHANGED, this.requestUpdate, this);
    this.request.addEventListener(SDK.NetworkRequest.Events.RESPONSE_HEADERS_CHANGED, this.requestUpdate, this);

    this.requestUpdate();
  }

  override willHide(): void {
    super.willHide();
    this.request.removeEventListener(SDK.NetworkRequest.Events.REQUEST_HEADERS_CHANGED, this.requestUpdate, this);
    this.request.removeEventListener(SDK.NetworkRequest.Events.RESPONSE_HEADERS_CHANGED, this.requestUpdate, this);
  }
}