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/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/**
* Generate the URL for an icon representing the file of a calendar event
* attachment. Tries to determine the file type by the file extension or if
* provided an explicit mime type and then generates the special moz-icon URI
* for it. The exception are cloud file/FileLink attachments, where we prefer to
* show the service icon if we don't have a mime type for the attachment. That's
* because the attachment willthen often point at a web page to download the
* file instead of a direct link to a file.
*
* @param {calIAttachment} attachment - The attachment to get an icon URL for.
* @returns {string} Typically a moz-icon URI without any get parameters. If the attachment is stored with cloudfile, returns the cloud file icon.
*/
export function getAttachmentIcon(attachment) {
if (!attachment.uri || attachment.uri.spec == "about:blank") {
return "";
}
let iconSrc = attachment.uri.spec || "dummy.html";
if (!attachment.uri.schemeIs("file")) {
// Using an URI directly, with e.g. a http scheme, wouldn't render any icon.
if (attachment.formatType) {
iconSrc = "goat?contentType=" + attachment.formatType;
} else if (attachment.getParameter("X-SERVICE-ICONURL")) {
return attachment.getParameter("X-SERVICE-ICONURL");
} else {
// Let's try to auto-detect.
const parts = iconSrc.slice(attachment.uri.scheme.length + 2).split("/");
iconSrc = parts.at(-1) || "dummy.html";
}
}
return `moz-icon://${iconSrc}`;
}