Hydrilla

/**

 * SPDX-License-Identifier: LicenseRef-GPL-3.0-or-later-WITH-js-exceptions

 *

 * Make videos on archive.org playable inline without relying on site-served js

 *

 * Copyright (C) 2021 Wojtek Kosior <koszko@koszko.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * As additional permission under GNU GPL version 3 section 7, you

 * may distribute forms of that code without the copy of the GNU

 * GPL normally required by section 4, provided you include this

 * license notice and, in case of non-source distribution, a URL

 * through which recipients can access the Corresponding Source.

 * If you modify file(s) with this exception, you may extend this

 * exception to your version of the file(s), but you are not

 * obligated to do so. If you do not wish to do so, delete this

 * exception statement from your version.

 *

 * As a special exception to the GPL, any HTML file which merely

 * makes function calls to this code, and for that purpose

 * includes it by reference shall be deemed a separate work for

 * copyright law purposes. If you modify this code, you may extend

 * this exception to your version of the code, but you are not

 * obligated to do so. If you do not wish to do so, delete this

 * exception statement from your version.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>.

 *

 * I, Wojtek Kosior, thereby promise not to sue for violation of this file's

 * license. Although I request that you do not make use of this code in a

 * proprietary program, I am not going to enforce this in court.

 */

const theatre_ia = document.getElementById("theatre-ia");

let srcs = [];

let ogv_src = null;

let webm_src = null;

let mp4_src = null;

function process_link(link)

{

    ogv_src  = ogv_src  || (/\.ogv$/.test(link)  && link);

    webm_src = webm_src || (/\.webm$/.test(link) && link);

    mp4_src  = mp4_src  || (/\.mp4$/.test(link)  && link);

}

if (theatre_ia) {

    for (const a of

	 document.querySelectorAll(".item-download-options a.download-pill"))

	process_link(a.href);

    for (const link of document.querySelectorAll("link[itemprop=contentUrl]"))

	process_link(link.href);

    srcs = [

	{src: ogv_src,  type: "video/ogg"},

	{src: webm_src, type: "video/webm"},

	{src: mp4_src,  type: "video/mp4"}

    ].filter(src => src.src);

}

if (srcs.length > 0) {

    const video = document.createElement("video");

    for (const src of srcs) {

	const source = document.createElement("source");

	Object.assign(source, src);

	video.appendChild(source);

    }

    video.setAttribute("width", "100%");

    video.setAttribute("height", "auto");

    video.setAttribute("controls", "");

    for (const child of theatre_ia.children)

	child.remove();

    theatre_ia.appendChild(video);

}