BetterDiscordAddons/Plugins/ForceImagePreviews/ForceImagePreviews.plugin.js

//META{"name":"ForceImagePreviews","authorId":"278543574059057154","invite":"Jx3TjNS","donate":"https://www.paypal.me/MircoWittrien","patreon":"https://www.patreon.com/MircoWittrien","website":"https://github.com/mwittrien/BetterDiscordAddons/tree/master/Plugins/ForceImagePreviews","source":"https://raw.githubusercontent.com/mwittrien/BetterDiscordAddons/master/Plugins/ForceImagePreviews/ForceImagePreviews.plugin.js"}*//

var ForceImagePreviews = (_ => {
	return class ForceImagePreviews {
		getName () {return "ForceImagePreviews";}

		getVersion () {return "1.1.8";}

		getAuthor () {return "DevilBro";}

		getDescription () {return "Forces embedded Image Previews, if Discord doesn't do it itself. Caution: Externals Images can contain malicious code and reveal your IP!";}

		constructor () {
			this.changelog = {
				"fixed":[["Imgur","No longer double emebds imgur images"], ["Youtube","No longer double embeds some special youtube links like 'youtu.be'"]]
			};

			this.patchedModules = {
				before: {
					SimpleMessageAccessories: "default"
				}
			};
		}

		//legacy
		load () {}

		start () {
			if (!window.BDFDB) window.BDFDB = {myPlugins:{}};
			if (window.BDFDB && window.BDFDB.myPlugins && typeof window.BDFDB.myPlugins == "object") window.BDFDB.myPlugins[this.getName()] = this;
			let libraryScript = document.querySelector("head script#BDFDBLibraryScript");
			if (!libraryScript || (performance.now() - libraryScript.getAttribute("date")) > 600000) {
				if (libraryScript) libraryScript.remove();
				libraryScript = document.createElement("script");
				libraryScript.setAttribute("id", "BDFDBLibraryScript");
				libraryScript.setAttribute("type", "text/javascript");
				libraryScript.setAttribute("src", "https://mwittrien.github.io/BetterDiscordAddons/Plugins/BDFDB.min.js");
				libraryScript.setAttribute("date", performance.now());
				libraryScript.addEventListener("load", _ => {this.initialize();});
				document.head.appendChild(libraryScript);
			}
			else if (window.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) this.initialize();
			this.startTimeout = setTimeout(_ => {
				try {return this.initialize();}
				catch (err) {console.error(`%c[${this.getName()}]%c`, "color: #3a71c1; font-weight: 700;", "", "Fatal Error: Could not initiate plugin! " + err);}
			}, 30000);
		}

		initialize () {
			if (window.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) {
				if (this.started) return;
				BDFDB.PluginUtils.init(this);
				
				BDFDB.ModuleUtils.forceAllUpdates(this);
				BDFDB.MessageUtils.rerenderAll();
			}
			else console.error(`%c[${this.getName()}]%c`, "color: #3a71c1; font-weight: 700;", "", "Fatal Error: Could not load BD functions!");
		}

		stop () {
			if (window.BDFDB && typeof BDFDB === "object" && BDFDB.loaded) {
				this.stopping = true;
				
				BDFDB.ModuleUtils.forceAllUpdates(this);
				BDFDB.MessageUtils.rerenderAll();
				
				BDFDB.PluginUtils.clear(this);
			}
		}


		// begin of own functions
		
		processSimpleMessageAccessories (e) {
			if (e.instance.props.message.content) {
				let message = new BDFDB.DiscordObjects.Message(e.instance.props.message);
				for (let word of e.instance.props.message.content.split(/\n|\s|\r|\t|\0/g)) if (word.indexOf("https://") > -1 || word.indexOf("http://") > -1) {
					word = word.indexOf("<") == 0 && word.indexOf(">") == word.length-1 ? word.slice(1,-1) : word;
					if (!this.isEmbedded(message.embeds, word)) this.injectEmbed(e.instance, message.embeds, word);
				}
				e.instance.props.message = message;
			}
		}
		
		injectEmbed (instance, embeds, link) {
			BDFDB.LibraryRequires.request(link, (error, response, result) => {
				if (response && response.headers["content-type"] && response.headers["content-type"].indexOf("image") > -1) {
					let imagethrowaway = document.createElement("img");
					imagethrowaway.src = link;
					imagethrowaway.onload = _ => {
						if (!this.isEmbedded(embeds, link)) {
							embeds.push({
								image: {
									url: link,
									proxyURL: link,
									height: imagethrowaway.naturalHeight,
									width: imagethrowaway.naturalWidth
								},
								type: "image",
								url: link
							});
							BDFDB.ReactUtils.forceUpdate(instance);
						}
					};
				}
				else if (response && response.headers["server"] && response.headers["server"].toLowerCase().indexOf("youtube") > -1 && result.indexOf("yt-user-info") > -1) {
					if (!this.isEmbedded(embeds, link)) {
						result = result.replace(/[\r|\n|\t]|[\s]{2,}/g, "");
						let width = result.split(new RegExp(BDFDB.StringUtils.regEscape('<meta itemprop="width" content="'), "i"))[1].split('"')[0];
						let height = result.split(new RegExp(BDFDB.StringUtils.regEscape('<meta itemprop="height" content="'), "i"))[1].split('"')[0];
						let thumbnail = result.split(new RegExp(BDFDB.StringUtils.regEscape('<link itemprop="thumbnailUrl" href="'), "i"))[1].split('"')[0];
						embeds.push({
							author: {
								name: result.split(new RegExp(BDFDB.StringUtils.regEscape('<div class="yt-user-info"><a href="'), "i"))[1].split('>')[1].split('<')[0],
								url: `https://www.youtube.com${result.split(new RegExp(BDFDB.StringUtils.regEscape('<div class="yt-user-info"><a href="'), "i"))[1].split('"')[0]}`
							},
							color: "#ff0000",
							provider: {
								name: "YouTube",
								url: "https://www.youtube.com/"
							},
							rawDescription: result.split(new RegExp(BDFDB.StringUtils.regEscape('<meta property="og:description" content="'), "i"))[1].split('"')[0],
							rawTitle: result.split(new RegExp(BDFDB.StringUtils.regEscape('<meta property="og:title" content="'), "i"))[1].split('"')[0],
							thumbnail: {
								url: thumbnail,
								proxyURL: thumbnail,
								width: width,
								height: height
							},
							type: "video",
							url: link,
							video: {
								url: result.split(new RegExp(BDFDB.StringUtils.regEscape('<link itemprop="embedUrl" href="'), "i"))[1].split('"')[0],
								width: width,
								height: height
							}
						});
						BDFDB.ReactUtils.forceUpdate(instance);
					}
				}
			});
		}
		
		isEmbedded (embeds, link) {
			if (link.indexOf("youtube.") > -1 || link.indexOf("youtu.be") > -1) {
				let videoId = link.split("watch?v=")[1] || link.split("?")[0].split("/").pop();
				if (videoId) for (let embed of embeds) if (embed.url == link || embed.video && embed.url.indexOf(videoId) > -1) return true;
			}
			else {
				for (let embed of embeds) if (embed.url == link || embed.image && embed.image.url == link) return true;
			}
			return false;
		}
	}
})();