translate all site fixes to the new Hydrilla format

Fixes in new format are yet to be tested. Things may break. Alternative site interfaces were removed. This repository is meant exclusively for holding fixes for js-encumbered websites. Jahoti's SParse code shall be put in a separate repository.
author: Wojtek Kosior <koszko@koszko.org> 2022-02-18 18:51:22 +0100
committer: Wojtek Kosior <koszko@koszko.org> 2022-02-18 18:51:22 +0100
commit: e24c60dd6acbb8db5912a7715c302374d7eb18b8 (patch)
tree: 55c6d8818ae734b57b45811391843d69d76f7e2c /src/odysee.js
parent: 9ceab6826af54f343a1f09ed0f6b2010552f8a2d (diff)
download: hydrilla-fixes-bundle-e24c60dd6acbb8db5912a7715c302374d7eb18b8.tar.gz
hydrilla-fixes-bundle-e24c60dd6acbb8db5912a7715c302374d7eb18b8.zip
1 files changed, 425 insertions, 0 deletions
diff --git a/src/odysee.js b/src/odysee.js
new file mode 100644
index 0000000..cd1c49c
--- /dev/null
+++ b/src/odysee.js
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+/**
+ * SPDX-License-Identifier: LicenseRef-GPL-3.0-or-later-WITH-js-exceptions
+ *
+ * Make video playback and search on odysee.com functional without nonfree 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.
+ */
+
+/* use with https://odysee.com/*** */
+
+/* Helper functions for ajax. */
+
+function ajax_callback(xhttp, cb)
+{
+    cb(xhttp.response);
+}
+
+function perform_ajax(method, url, callback, err_callback, data)
+{
+    const xhttp = new XMLHttpRequest();
+    xhttp.onload = () => ajax_callback(xhttp, callback);
+    xhttp.onerror = err_callback;
+    xhttp.onabort = err_callback;
+    xhttp.open(method, url, true);
+    try {
+	xhttp.send(data);
+    } catch(e) {
+	err_callback();
+    }
+}
+
+/* Helper functions for strings with HTML entities (e.g. `&quot;'). */
+function HTML_decode(text)
+{
+    const tmp_span = document.createElement("span");
+    tmp_span.innerHTML = text;
+    return tmp_span.textContent;
+}
+
+/* Odysee API servers. */
+
+const odysee_resolve_url = "https://api.na-backend.odysee.com/api/v1/proxy?m=resolve";
+const lighthouse_search_url = "https://lighthouse.odysee.com/search";
+
+/*
+ * If we're on a video page, show the video. Use JSON data embedded in <head>
+ * if possible. If not - fetch video data using Odysee API.
+ */
+
+let data = null;
+
+function process_json_script(json_script)
+{
+    try {
+	data = JSON.parse(json_script.textContent);
+    } catch (e) {
+	console.log("Error parsing content data", e);
+    }
+}
+
+for (const json_script of document.querySelectorAll("head script")) {
+    if (["blocked-type", "type"].map(a => json_script.getAttribute(a))
+	.includes("application/ld+json"))
+	process_json_script(json_script);
+}
+
+const body = document.createElement("body");
+const video_container = document.createElement("div");
+
+body.appendChild(video_container);
+
+function show_video(content_url, title, upload_date, description)
+{
+    if (content_url) {
+	const video = document.createElement("video");
+	const source = document.createElement("source");
+
+	source.src = content_url;
+
+	video.setAttribute("width", "100%");
+	video.setAttribute("height", "auto");
+	video.setAttribute("controls", "");
+
+	video.appendChild(source);
+
+	video_container.appendChild(video);
+    }
+
+    if (title) {
+	const h1 = document.createElement("h1");
+
+	h1.textContent = HTML_decode(title);
+	h1.setAttribute("style", "color: #555;");
+
+	video_container.appendChild(h1);
+    }
+
+    if (upload_date) {
+	try {
+	    const date = new Date(upload_date).toString();
+	    const date_div = document.createElement("div");
+
+	    date_div.textContent = `Uploaded: ${date}`;
+	    date_div.setAttribute("style", "font-size: 14px; font-weight: bold; margin-bottom: 5px;");
+
+	    video_container.appendChild(date_div);
+	} catch(e) {
+	    console.log("Error parsing content upload date", e);
+	}
+    }
+
+    if (description) {
+	const description_div = document.createElement("div");
+
+	description_div.textContent = HTML_decode(description);
+	description_div.setAttribute("style", "white-space: pre;");
+
+	video_container.appendChild(description_div);
+    }
+}
+
+function show_video_from_query(response)
+{
+    try {
+	var result = Object.values(JSON.parse(response).result)[0];
+
+	if (result.value_type !== "stream")
+	    return;
+
+	var date = result.timestamp * 1000;
+	var description = result.value.description;
+	var title = result.value.title;
+	const name = encodeURIComponent(result.name);
+	var url = `https://odysee.com/$/stream/${name}/${result.claim_id}`;
+    } catch (e) {
+	return;
+    }
+
+    show_video(url, title, date, description);
+}
+
+function fetch_show_video(name, claim_id)
+{
+    const payload = {
+	jsonrpc: "2.0",
+	method: "resolve",
+	params: {
+	    urls: [`lbry://${decodeURIComponent(name)}#${claim_id}`],
+	    include_purchase_receipt: true
+	},
+	id: Math.round(Math.random() * 10**14)
+    };
+
+    perform_ajax("POST", odysee_resolve_url, show_video_from_query,
+		 () => null, JSON.stringify(payload));
+}
+
+if (data && typeof data === "object" && data["@type"] === "VideoObject") {
+    show_video(data.contentUrl, data.name, data.uploadDate, data.description);
+} else {
+    const match = /\/([^/]+):([0-9a-f]+)$/.exec(document.URL);
+    if (match)
+	fetch_show_video(match[1], match[2]);
+}
+
+/* Show search. */
+
+const search_input = document.createElement("input");
+const search_submit = document.createElement("button");
+const search_form = document.createElement("form");
+const error_div = document.createElement("div");
+
+search_submit.textContent = "Search Odysee";
+
+search_form.setAttribute("style", "margin: 15px 0 0 0;");
+
+search_form.appendChild(search_input);
+search_form.appendChild(search_submit);
+
+error_div.textContent = "Failed to perform search :c";
+error_div.setAttribute("style", "display: none;");
+
+body.appendChild(search_form);
+body.appendChild(error_div);
+
+/* Replace the UI. */
+
+document.documentElement.replaceChild(body, document.body);
+
+/* Add the logic of performing search and showing results. */
+
+function show_error()
+{
+    error_div.setAttribute("style", "color: #b44;");
+}
+
+function clear_error()
+{
+    error_div.setAttribute("style", "display: none;");
+}
+
+let results_div = null;
+const load_more_but = document.createElement("button");
+
+load_more_but.textContent = "Load more";
+
+function show_search_entries(new_results_div, response)
+{
+    try {
+	var results = Object.values(JSON.parse(response).result);
+    } catch (e) {
+	console.log("Failed to parse search response :c",
+		    "Bad response format from api.na-backend.odysee.com.");
+	show_error();
+	return;
+    }
+
+    for (const result of results) {
+	try {
+	    if (result.value_type !== "stream")
+		continue;
+
+	    let channel_specifier = "";
+	    let channel_name = null;
+	    try {
+		channel_name = result.signing_channel.name;
+		const channel_name_enc = encodeURIComponent(channel_name);
+		const channel_digit = result.signing_channel.claim_id[0];
+		channel_specifier = `${channel_name_enc}:${channel_digit}`;
+	    } catch (e) {
+	    }
+	    const video_name = encodeURIComponent(result.name);
+	    const video_id = result.claim_id[0];
+
+	    const result_a = document.createElement("a");
+	    const thumbnail = document.createElement("img");
+	    const title_span = document.createElement("span");
+	    const uploader_div = document.createElement("div");
+	    const description_div = document.createElement("div");
+
+	    thumbnail.setAttribute("style", "width: 100px; height: auto;");
+	    thumbnail.setAttribute("alt", result.value.thumbnail.url);
+	    thumbnail.src = result.value.thumbnail.url;
+
+	    title_span.setAttribute("style", "font-weight: bold;");
+	    title_span.textContent = result.value.title;
+
+	    uploader_div.setAttribute("style", "margin-left: 5px; font-size: 21px; color: #555;");
+	    uploader_div.textContent = channel_name;
+
+	    description_div.setAttribute("style", "white-space: pre;");
+	    description_div.textContent = result.value.description;
+
+	    result_a.setAttribute("style", "display: block; width: 100%; text-decoration: none; color: #333; margin: 8px; border-style: solid; border-width: 3px 0 0 0; border-color: #7aa;");
+	    result_a.href = `https://odysee.com${channel_specifier}/${video_name}:${video_id}`;
+
+	    if (result.value.thumbnail.url)
+		result_a.appendChild(thumbnail);
+	    result_a.appendChild(title_span);
+	    if (channel_name)
+		result_a.appendChild(uploader_div);
+	    result_a.appendChild(description_div);
+
+	    new_results_div.appendChild(result_a);
+	}
+	catch(e) {
+	    console.log(e);
+	}
+    }
+
+    clear_error();
+
+    if (results_div)
+	results_div.remove();
+
+    results_div = new_results_div;
+
+    body.appendChild(results_div);
+    body.appendChild(load_more_but);
+
+    enable_search_form();
+}
+
+function search_ajax_error(url)
+{
+    console.log(`Failed to query ${url} :c`);
+    show_error();
+    enable_search_form();
+}
+
+function get_detailed_search_entries(new_results_div, response)
+{
+    /* TODO: Simplify JSON handling using sanitize_JSON.js from Hachette. */
+    try {
+	var response_data = JSON.parse(response);
+	if (!Array.isArray(response_data))
+	    throw "Bad response format from lighthouse.odysee.com.";
+    } catch (e) {
+	show_error();
+	console.log("Failed to parse search response :c", e);
+	enable_search_form();
+	return;
+    }
+
+    const callback = r => show_search_entries(new_results_div, r);
+    const lbry_urls = [];
+
+    for (const search_result of response_data) {
+	if (!search_result.claimId || !search_result.name)
+	    continue;
+	lbry_urls.push(`lbry://${search_result.name}#${search_result.claimId}`);
+    }
+
+    const payload = {
+	jsonrpc: "2.0",
+	method: "resolve",
+	params: {
+	    urls: lbry_urls,
+	    include_purchase_receipt: true
+	},
+	id: Math.round(Math.random() * 10**14)
+    };
+
+    const url = odysee_resolve_url;
+
+    perform_ajax("POST", url, callback, () => search_ajax_error(url),
+		 JSON.stringify(payload));
+}
+
+function get_search_entries(new_results_div, query, from)
+{
+    const callback = r => get_detailed_search_entries(new_results_div, r);
+    const url = `${lighthouse_search_url}?s=${encodeURIComponent(query)}&size=20&from=${from}&claimType=file,channel&nsfw=false&free_only=true`;
+
+    new_results_div.setAttribute("data-fetched", parseInt(from) + 20);
+
+    perform_ajax("GET", url, callback, () => search_ajax_error(url));
+}
+
+function search(event)
+{
+    if (event)
+	event.preventDefault();
+
+    if (!/[^\s]/.test(search_input.value))
+	return;
+
+    disable_search_form();
+
+    const new_results_div = document.createElement("div");
+
+    new_results_div.setAttribute("data-query", search_input.value);
+
+    get_search_entries(new_results_div, search_input.value, 0);
+}
+
+function search_more()
+{
+    disable_search_form();
+
+    get_search_entries(results_div, results_div.getAttribute("data-query"),
+		       results_div.getAttribute("data-fetched"));
+}
+
+load_more_but.addEventListener("click", search_more);
+
+function enable_search_form()
+{
+    search_form.addEventListener("submit", search);
+    search_submit.removeAttribute("disabled");
+    if (results_div)
+	load_more_but.removeAttribute("disabled");
+}
+
+function disable_search_form()
+{
+    search_form.removeEventListener("submit", search);
+    search_submit.setAttribute("disabled", "");
+    load_more_but.setAttribute("disabled", "");
+}
+
+
+enable_search_form();
+
+
+const match = /^[^?]*search\?q=([^&]+)/.exec(document.URL)
+if (match) {
+    search_input.value = decodeURIComponent(match[1]);
+    search();
+}
author	Wojtek Kosior <koszko@koszko.org>	2022-02-18 18:51:22 +0100
committer	Wojtek Kosior <koszko@koszko.org>	2022-02-18 18:51:22 +0100
commit	e24c60dd6acbb8db5912a7715c302374d7eb18b8 (patch)
tree	55c6d8818ae734b57b45811391843d69d76f7e2c /src/odysee.js
parent	9ceab6826af54f343a1f09ed0f6b2010552f8a2d (diff)
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