/* vim: set ts=2 sw=2 et tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

const EXPORTED_SYMBOLS = ["MailLinkParent"];

const { XPCOMUtils } = ChromeUtils.importESModule(
  "resource://gre/modules/XPCOMUtils.sys.mjs"
);

const lazy = {};

ChromeUtils.defineESModuleGetters(lazy, {
  AttachmentInfo: "resource:///modules/AttachmentInfo.sys.mjs",
});

XPCOMUtils.defineLazyModuleGetters(lazy, {
  MailServices: "resource:///modules/MailServices.jsm",
  MailUtils: "resource:///modules/MailUtils.jsm",
});

class MailLinkParent extends JSWindowActorParent {
  receiveMessage(value) {
    switch (value.name) {
      case "imap:":
      case "mailbox:":
        this._handleMailboxLink(value);
        break;
      case "mailto:":
        this._handleMailToLink(value);
        break;
      case "mid:":
        this._handleMidLink(value);
        break;
      case "news:":
      case "snews:":
        this._handleNewsLink(value);
        break;
      default:
        throw Components.Exception(
          `Unsupported name=${value.name} url=${value.data}`,
          Cr.NS_ERROR_ILLEGAL_VALUE
        );
    }
  }

  _handleMailboxLink({ data, target }) {
    // AttachmentInfo is defined in msgHdrView.js.
    let url = new URL(data);
    new lazy.AttachmentInfo({
      contentType: "",
      url: data,
      name: url.searchParams.get("filename"),
      uri: "",
      isExternalAttachment: false,
    }).open(target.browsingContext.topChromeWindow, target.browsingContext.id);
  }

  _handleMailToLink({ data, target }) {
    let identity = null;

    // If the document with the link is a message, try to get the identity
    // from the message and use it when composing.
    let documentURI = target.windowContext.documentURI;
    if (documentURI instanceof Ci.nsIMsgMessageUrl) {
      documentURI.QueryInterface(Ci.nsIMsgMessageUrl);
      [identity] = lazy.MailUtils.getIdentityForHeader(
        documentURI.messageHeader
      );
    }

    lazy.MailServices.compose.OpenComposeWindowWithURI(
      undefined,
      Services.io.newURI(data),
      identity
    );
  }

  _handleMidLink({ data }) {
    // data is the mid: url.
    lazy.MailUtils.openMessageByMessageId(data.slice(4));
  }

  _handleNewsLink({ data }) {
    Services.ww.openWindow(
      null,
      "chrome://messenger/content/messageWindow.xhtml",
      "_blank",
      "all,chrome,dialog=no,status,toolbar",
      Services.io.newURI(data)
    );
  }
}