Load a random reddit post from your subs
// ==UserScript==
// @name Random reddit post
// @description Load a random reddit post from your subs
// @license MIT
// @namespace http://tampermonkey.net/
// @version 0.1
// @description Random reddit post
// @author John
// @match https://old.reddit.com/*
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @run-at document-idle
// @grant GM_registerMenuCommand
// @grant GM_getValue
// @grant GM_setValue
// ==/UserScript==
// a == random subreddit post
// s == random post
const verbose = true;
const LOG_PREFIX = "[Random Reddit]:";
function navigate(currentDoc, path) {
if (verbose) console.log(LOG_PREFIX, "Navigating to:", path);
currentDoc.location = path;
}
function createButton(name) {
let btn = document.createElement("a");
btn.innerHTML = name;
btn.style = "text-decoration: none; font-size: 1.4em"
btn.style.padding = "3px 3px 3px 3px";
// btn.style.border = "thick solid #FFFFFF";
// btn.style.margin = "3px 3px 3px 3px";
btn.href = "javascript:void(0)"
let div = document.getElementById("header-bottom-right");
if (div) {
div.insertBefore(btn, div.firstChild);
} else {
if (verbose) console.log(LOG_PREFIX, "header not ready");
}
return btn;
}
function updateImages() {
let maxHeight = window.innerHeight / 2.5;
let width = '100%';
let linkElements = document.getElementsByClassName("link");
for (let linkElement of linkElements) {
// linkElement.marginBottom = '10px';
// linkElement.width = width;
// linkElement.style.maxWidth = width;
// linkElement.style.width = width;
}
let thumbnailElements = document.getElementsByClassName("thumbnail");
// if (verbose) console.log(LOG_PREFIX, "thumbnails:", thumbnailElements)
for (let thumbnailElement of thumbnailElements) {
// thumbnailElement.style.maxWidth = width;
thumbnailElement.style.width = "20%";
// thumbnailElement.style.width = 'auto';
// thumbnailElement.style.height = 'auto';
// thumbnailElement.style.height = '100px';
// thumbnailElement.width = '600px';
// thumbnailElement.marginBottom = '20%';
let img = thumbnailElement.childNodes.item("");
if (img) {
var url = thumbnailElement.parentElement.getAttribute("data-url")
// if (verbose) console.log(LOG_PREFIX, "url:", url)
if (url != undefined && url != null &&
(url.includes(".jpg")
|| url.includes(".png")
|| url.includes(".jpeg"))
) {
// if (verbose) console.log(LOG_PREFIX, "Setting url:", url)
img.src = url;
}
// console.log(LOG_PREFIX, "img:", img)
// img.style.maxHeight = '100%';
// img.maxWidth = width;
// img.width = width;
img.style.maxWidth = width;
img.style.width = width;
// img.style.width = '640px';
// img.style.width = '600px';
// img.style.maxHeight = '70%';
img.style.height = 'auto';
img.style.maxHeight = `${maxHeight}px`;
img.style.objectFit = 'contain';
} else {
// console.log(LOG_PREFIX, "No img");
}
}
}
function shuffleArray(array) {
for (var i = array.length - 1; i > 0; i--) {
var j = Math.floor(Math.random() * (i + 1));
var temp = array[i];
array[i] = array[j];
array[j] = temp;
}
}
// Blacklist, useful when overloaded with one subreddit
const BLACKLIST_SR = [
"hentai"
];
function parsePosts(posts, filterMedia, startTime, getParams) {
const prefix = window.location.protocol + "//" + window.location.host;
if (filterMedia) {
posts = posts.filter(function (post) {
var isCrosspostVideo = false;
var crosspostParent = post.data.crosspost_parent_list || undefined;
// console.log("Post:", post)
try {
while (crosspostParent != undefined) {
crosspostParent = crosspostParent[0];
// console.log("Crosspost parent:", crosspostParent);
var postHint = crosspostParent.post_hint || "";
var url = crosspostParent.url || crosspostParent.link_url;
if (postHint.includes("video") || url.includes(".mp4") || url.includes(".gif")) {
isCrosspostVideo = true;
console.log("isCrosspostVideo:", isCrosspostVideo)
break;
}
crosspostParent = crosspostParent.crosspost_parent_list || undefined;
}
} catch (e) { }
var postHint = post.data.post_hint || "";
var url = post.data.url || post.data.link_url;
// console.log("Post:", postHint, url, post.data);
// console.log("isCrosspostVideo 2:", isCrosspostVideo)
// console.log("Post:", post.data.subreddit);
var isValidPost = BLACKLIST_SR.some((sr) => window.location.href.includes(sr)) || !BLACKLIST_SR.includes(post.data.subreddit);
return (postHint.includes("video") || url.includes(".mp4") || url.includes(".gif") || isCrosspostVideo || post.data.media) && isValidPost;
});
if (verbose) console.log(LOG_PREFIX, 'Filter animated: ', posts);
}
if (verbose) console.log(LOG_PREFIX, 'Media posts: ', posts);
if (posts.length > 0) {
shuffleArray(posts);
var randPost = posts[Math.floor(Math.random()*posts.length)];
// var randPostLink = prefix + randPost.data.permalink + `?${PREFIX_KEY}=` + (getParams || "");
var randPostLink = prefix + randPost.data.permalink + (getParams || "");
// console.log(LOG_PREFIX, randPost, randPostUrl);
if (verbose) console.log(LOG_PREFIX, "Random post link:", randPostLink);
navigate(document, randPostLink);
} else {
$("body").css("cursor", "default");
console.log("No media post")
}
var endTime = performance.now();
if (verbose) console.log(`Random post time taken: ${endTime - startTime} milliseconds`);
}
const PREFIX_KEY="prefix"
const SEARCH_KEY="q"
function randomPost(extraPath, filterMedia, getParams, onlyTop) {
var startTime = performance.now()
$("body").css("cursor", "progress");
if (verbose) console.log(LOG_PREFIX, "Random post:", extraPath, ", filter:", filterMedia, ", prefix:", getParams, ", only top:", onlyTop);
const durationArray = ["all", "month", "week", "year"];
var duration = durationArray[Math.floor(Math.random()*durationArray.length)];
if (extraPath.startsWith("saved")) {
duration = "all";
}
// const sortArray = ["top", "new", "hot", "gilded"];
var sortArray = ["top", "new", "hot"];
var sortArrayWeights = [8, 2, 5];
if (onlyTop) {
sortArray = ["top"];
sortArrayWeights = [1];
}
// var sortType = sortArray[Math.floor(Math.random()*sortArray.length)];
var sortType = "";
const savedPath = extraPath.startsWith("saved")
if (!savedPath) {
sortType = weighted_random(sortArray, sortArrayWeights);
}
// const maxPostLimit = 100;
// const minPostLimit = 25;
// var postLimit = Math.floor(Math.random() * (maxPostLimit - minPostLimit + 1)) + minPostLimit;
var postLimit = 100;
if (verbose) console.log(LOG_PREFIX, "Sort type:", sortType, "post limit:", postLimit);
var fetchUrl = `https://old.reddit.com/` + extraPath;
fetchUrl += `${sortType}.json?`;
if (getParams && getParams.includes("q")) {
// Search
fetchUrl = `https://old.reddit.com/` + `${extraPath}.json` + getParams + `&sort=${sortType}`;
}
fetchUrl += `&t=all&limit=${postLimit}`;
if (verbose) console.log(LOG_PREFIX, "Fetch 1:", fetchUrl);
fetch(fetchUrl)
.then(result => result.json())
.then((output) => {
if (verbose) console.log(LOG_PREFIX, 'Output: ', output);
var posts = output.data.children;
var lastPost = posts.at(-1);
console.log("Last path:", lastPost.data.name);
var fetchUrl = `https://old.reddit.com/` + extraPath;
fetchUrl += `${sortType}.json?`;
if (getParams && getParams.includes("q")) {
// Search
fetchUrl = `https://old.reddit.com/` + `${extraPath}.json` + getParams + `&sort=${sortType}`;
}
fetchUrl += `&t=${duration}&limit=${postLimit}&after=${lastPost.data.name}`;
if (verbose) console.log(LOG_PREFIX, "Fetch 2:", fetchUrl);
fetch(fetchUrl)
.then(result => result.json())
.then((output) => {
if (verbose) console.log(LOG_PREFIX, 'Output: ', output);
// var posts = output.data.children;
// console.log(LOG_PREFIX, 'All posts: ', posts);
posts = posts.concat(output.data.children);
// console.log(LOG_PREFIX, 'All posts: ', posts);
// if (savedPath) {
var lastPost = posts.at(-1);
console.log("Last path:", lastPost.data.name);
var fetchUrl = `https://old.reddit.com/` + extraPath;
fetchUrl += `${sortType}.json?`;
if (getParams && getParams.includes("q")) {
// Search
fetchUrl = `https://old.reddit.com/` + `${extraPath}.json` + getParams + `&sort=${sortType}`;
}
fetchUrl += `&t=${duration}&limit=${postLimit}&after=${lastPost.data.name}`;
if (verbose) console.log(LOG_PREFIX, "Fetch 3:", fetchUrl);
fetch(fetchUrl)
.then(result => result.json())
.then((output) => {
if (verbose) console.log(LOG_PREFIX, 'Output: ', output);
// var posts = output.data.children;
posts = posts.concat(output.data.children);
// console.log(LOG_PREFIX, 'All posts: ', posts);
parsePosts(posts, filterMedia, startTime, getParams);
}).catch(err => console.error(err))
// } else {
// parsePosts(posts, filterMedia, startTime);
// }
}).catch(err => console.error(err))
}).catch(err => console.error(err))
}
function openInNewTab(url) {
window.open(url, '_blank').focus();
}
function openFirstVideo() {
// Tries to open first video element
var titleElements = document.getElementsByClassName("title");
for (let titleElement of titleElements) {
try {
if (titleElement.tagName == "A") {
var videoLink = titleElement.href || titleElement.data-href-url;
console.log("Opening video:", videoLink);
// navigate(document, videoLink);
openInNewTab(videoLink);
break;
}
} catch (e) {
console.error("Failed to open video:", e);
}
}
}
if (!window.location.pathname.includes("comments")) {
var interval = setInterval(function(){
updateImages();
}, 1000);
} else {
var maxHeight = 550;
var maxWidth = 300;
try {
var items = document.getElementsByClassName("expando");
// items[0].style.maxWidth = "100px";
// items[0].style.maxHeight = "1139px";
// items[0].style.maxHeight = "600px";
// // items[0].style.maxWidth = "811px";
// items[0].style.maxWidth = "300px";
items[0].style.maxHeight = `${maxHeight}px`;
// items[0].style.maxWidth = `${maxWidth}px`;
} catch (e) {
// console.error("Failed to set video width:", e);
}
function allDescendants (node) {
try {
for (var i = 0; i < node.childNodes.length; i++) {
var child = node.childNodes[i];
allDescendants(child);
child.style.maxHeight = `${maxHeight}px`;
// child.style.maxWidth = `${maxWidth}px`;
// child.style.maxHeight = "600px";
// child.style.maxWidth = "300px";
}
} catch (e) {
// console.error("Failed to set video width:", e);
}
}
allDescendants(items[0]);
console.log("items:", items)
var videoList = document.getElementsByTagName("video");
console.log("Videos:", videoList)
for (var e of videoList) {
// e.setAttribute('style', "width: 100px; height: 100px");
try {
// var newHeight = document.body.clientHeight * 0.75;
// console.log("New height:", newHeight);
// e.parentElement.parentElement.parentElement.style = `height: ${newHeight}px`
var videoWidth = e.parentElement.parentElement.parentElement.offsetWidth;
e.setAttribute('style', `width: ${videoWidth}px`);
console.log("New videoWidth:", videoWidth);
} catch (e) {
console.error("Failed to set video width:", e);
}
}
}
// var videoList = document.getElementsByTagName("video");
// console.log("Videos:", videoList)
// for (var e of videoList) {
// // e.setAttribute('style', "width: 100px; height: 100px");
// try {
// var newHeight = document.body.clientHeight * 0.75;
// console.log("New height:", newHeight);
// e.parentElement.parentElement.parentElement.style = `height: ${newHeight}px`
// var videoWidth = e.parentElement.parentElement.parentElement.offsetWidth;
// e.setAttribute('style', `width: ${videoWidth}px`);
// } catch (e) {
// console.error("Failed to set video width:", e);
// }
// }
// window.addEventListener('load', function() {
// console.log("Window loaded");
// setTimeout(function(){}, 1000)
// var videoList = document.getElementsByTagName("video");
// console.log("Videos:", videoList)
// for (var e of videoList) {
// // e.setAttribute('style', "width: 100px; height: 100px");
// try {
// var newHeight = document.body.clientHeight * 0.75;
// console.log("New height:", newHeight);
// e.parentElement.parentElement.parentElement.style = `height: ${newHeight}px`
// // var videoWidth = e.parentElement.parentElement.parentElement.offsetWidth;
// // e.setAttribute('style', `width: ${videoWidth}px`);
// } catch (e) {
// console.error("Failed to set video width:", e);
// }
// }
// });
// var observer = new MutationObserver(function(mutations) {
// console.log("Mutations:", mutations)
// // if (document.contains(myElement)) {
// // console.log("It's in the DOM!");
// // observer.disconnect();
// // }
// setTimeout(function(){}, 1000)
// var videoList = document.getElementsByTagName("video");
// for (var e of videoList) {
// // e.setAttribute('style', "width: 100px; height: 100px");
// try {
// var newHeight = document.body.clientHeight * 0.75;
// console.log("New height:", newHeight);
// e.parentElement.parentElement.parentElement.style = `height: ${newHeight}px`
// // var videoWidth = e.parentElement.parentElement.parentElement.offsetWidth;
// // e.setAttribute('style', `width: ${videoWidth}px`);
// } catch (e) {
// console.error("Failed to set video width:", e);
// }
// }
// });
// observer.observe(document, {attributes: false, childList: true, characterData: false, subtree:true});
// observer.observe(document, {attributes: true, childList: true, characterData: false, subtree:true});
// window.addEventListener('load', function() {
const randSavedPostBtn = createButton("Saved (Q)");
randSavedPostBtn.onclick = () => {
randomPost("saved/");
};
const randSavedMediaPostBtn = createButton("Media saved (W)");
randSavedMediaPostBtn.onclick = () => {
randomPost("saved/", filterMedia = true);
};
const randPostBtn = createButton("Rand post (S)");
randPostBtn.onclick = () => {
randomPost("");
};
var randSrPostPath = "";
if (window.location.pathname != "/") {
var pathArray = window.location.pathname.split('/');
const randSrPostBtn = createButton("Sr post (A)");
randSrPostBtn.onclick = () => {
randomPost(`r/${pathArray[2]}/`);
};
}
const randMediaPostBtn = createButton("Media (B)");
randMediaPostBtn.onclick = () => {
randomPost("", filterMedia = true);
};
if (window.location.pathname != "/") {
var pathArray = window.location.pathname.split('/');
const randSrMediaPostBtn = createButton("Media sr (V)");
randSrMediaPostBtn.onclick = () => {
randomPost(`r/${pathArray[2]}/`, filterMedia = true);
};
}
const openVideoBtn = createButton("Open video");
openVideoBtn.onclick = () => {
openFirstVideo();
};
document.onkeyup = function (e) {
console.log("event:", e);
e = e || window.event;
var charCode = e.charCode || e.keyCode,
character = String.fromCharCode(charCode);
var tagName = e.target.nodeName.toLowerCase();
// if (tagName == "input" || tagName == "textarea" || e.shiftKey || e.ctrlKey) {
if (tagName == "input" || tagName == "textarea" || e.ctrlKey) {
if (verbose) console.log(LOG_PREFIX, "Ignoring input");
return;
}
if (e.code === 'Enter' && e.ctrlKey) {
// if (e.code === 'Enter') {
openFirstVideo();
return;
}
const onlyTop = !e.shiftKey;
if (verbose) console.log(LOG_PREFIX, "Key press:", character);
if (character.toUpperCase() == 'A') {
if (window.location.pathname != "/") {
var pathArray = window.location.pathname.split('/');
if (window.location.pathname.endsWith("search")) {
// var path = parse_query_string(window.location.search.substring(1))[SEARCH_KEY]
var prefix = window.location.search + `&${PREFIX_KEY}=${window.location.pathname}`
randomPost(`${window.location.pathname}`, true, prefix, onlyTop);
} else if (window.location.search.includes(PREFIX_KEY)) {
var path = parse_query_string(window.location.search.substring(1))[PREFIX_KEY]
randomPost(`${path}`, true, window.location.search, onlyTop);
} else if (window.location.pathname.includes("user/") && window.location.pathname.includes("m/")) {
// 1 to 4
var path = pathArray.slice(1,5).join("/")
randomPost(`${path}/`, null, `?${PREFIX_KEY}=${window.location.pathname}`, onlyTop);
} else {
randomPost(`r/${pathArray[2]}/`, null, null, onlyTop);
}
}
}
if (character.toUpperCase() == 'S') {
randomPost("", null, null, onlyTop);
}
if (character.toUpperCase() == 'V') {
if (window.location.pathname != "/") {
var pathArray = window.location.pathname.split('/');
if (window.location.pathname.endsWith("search")) {
// var path = parse_query_string(window.location.search.substring(1))[SEARCH_KEY]
var prefix = window.location.search + `&${PREFIX_KEY}=${window.location.pathname}`
randomPost(`${window.location.pathname}`, filterMedia = true, prefix, onlyTop);
} else if (window.location.search.includes(PREFIX_KEY)) {
var path = parse_query_string(window.location.search.substring(1))[PREFIX_KEY]
randomPost(`${path}`, true, window.location.search, onlyTop);
} else if (window.location.pathname.includes("user/") && window.location.pathname.includes("m/")) {
// 1 to 4
var path = pathArray.slice(1,5).join("/")
randomPost(`${path}/`, true, `?${PREFIX_KEY}=${window.location.pathname}`, onlyTop);
} else {
randomPost(`r/${pathArray[2]}/`, filterMedia = true, undefined, onlyTop);
}
}
}
if (character.toUpperCase() == 'B') {
randomPost("", filterMedia = true, undefined, onlyTop);
}
if (character.toUpperCase() == 'Q') {
randomPost("saved/", null, null, onlyTop);
}
if (character.toUpperCase() == 'W') {
randomPost("saved/", filterMedia = true, null, onlyTop);
}
};
// }, false);
function parse_query_string(query) {
var vars = query.split("&");
var query_string = {};
for (var i = 0; i < vars.length; i++) {
var pair = vars[i].split("=");
var key = decodeURIComponent(pair.shift());
var value = decodeURIComponent(pair.join("="));
// If first entry with this name
if (typeof query_string[key] === "undefined") {
query_string[key] = value;
// If second entry with this name
} else if (typeof query_string[key] === "string") {
var arr = [query_string[key], value];
query_string[key] = arr;
// If third or later entry with this name
} else {
query_string[key].push(value);
}
}
return query_string;
}
// https://old.reddit.com/r/javascript/top.json?t=all
// &sort=desc
// &limit=250
function weighted_random(items, weights) {
var i;
for (i = 0; i < weights.length; i++)
weights[i] += weights[i - 1] || 0;
var random = Math.random() * weights[weights.length - 1];
for (i = 0; i < weights.length; i++)
if (weights[i] > random)
break;
return items[i];
}
function toggleHentai() {
console.log("toggleHentai");
var enableHentai = GM_getValue("enable_hentai");
if (!enableHentai) {
console.log("init enableHentai")
GM_setValue("enable_hentai", true);
enableHentai = true;
}
console.log("enableHentai:", enableHentai)
// [].forEach.call(
// ['contextmenu', 'copy', 'cut', 'paste', 'mouseup', 'mousedown', 'keyup', 'keydown', 'drag', 'dragstart', 'select', 'selectstart'],
// function(event) {
// document.addEventListener(event, function(e) { e.stopPropagation(); }, true);
// }
// );
}
function enableCommandMenu() {
var commandMenu = true;
try {
if (typeof(GM_registerMenuCommand) == undefined) {
return;
} else {
if (commandMenu == true ) {
GM_registerMenuCommand('Toggle Hentai', function() {
toggleHentai();
});
}
}
}
catch(err) {
console.log(err);
}
}
function init() {
enableCommandMenu();}
init();
// $("body").css("cursor", "default");
// var prefix = "https://old.reddit.com/";
// var sortArray = ["top", "new", "hot", "gilded"];
// var sortType = sortArray[Math.floor(Math.random()*sortArray.length)];
// // var sortArrayWeights = [8, 3, 4, 4];
// // var sortType = weighted_random(sortArray, sortArrayWeights);
// console.log("Sort type:", sortType);
// fetch(`https://old.reddit.com/r/javascript/${sortType}.json?t=all&limit=250`)
// .then(result => result.json())
// .then((output) => {
// console.log('Output: ', output);
// var posts = output.data.children;
// posts = posts.filter(function (post) {
// var postHint = post.data.post_hint || "";
// var url = post.data.url || post.data.link_url;
// console.log("Post:", postHint, url, post.data);
// return postHint.includes("video") || url.includes(".mp4") || url.includes(".gif");
// });
// if (posts.length > 0) {
// var randPost = posts[Math.floor(Math.random()*posts.length)];
// var randPostLink = prefix + randPost.data.permalink;
// console.log(randPost, randPostLink);
// } else {
// console.log("No media post")
// }
// }).catch(err => console.error(err));
//https://old.reddit.com/r/javascript/top.json?t=all