revert pixiv-embedded to using html because ajax not work on R-18

infer all "page" urls based on pageCount

!@

pixiv-embedder.js

@@ -4,8 +4,9 @@ var fs = require("fs");
 
 client.on("messageCreate", async message => {
 	if (message.guild.id != config.guild) return;
-	let pixiv_ids = new Set(Array.from(message.content.matchAll(/https?:\/\/www\.pixiv\.net\/en\/artworks\/(\d+)\b/g)).map(x=>x[1]));
-	if (!pixiv_ids.size) return;
+	if (message.author.id == client.user.id) return;
+	let pixiv_urls = new Set(message.content.match(/https?:\/\/www\.pixiv\.net\/en\/artworks\/\d+\b/g));
+	if (!pixiv_urls.size) return;
 	message.suppressEmbeds();
 	// suppressing embeds doesn't work on embeds that load after
 	client.on("messageUpdate", function arf(g,updatedMessage) {
@@ -18,14 +19,17 @@ client.on("messageCreate", async message => {
 			client.removeListener("messageUpdate", arf);
 		}
 	});
-	for (let pixiv_id of pixiv_ids) {
+	for (let pixiv_url of pixiv_urls) {
 		try {
-			let json = await (await fetch(`https://www.pixiv.net/ajax/illust/${pixiv_id}/pages`)).text();
-			let data = JSON.parse(json);
-			if (data.error) { console.error(`pixiv ajax said error for ${pixiv_id}: ${data.error}`); continue}
-			await message.channel.send(data.body.map(o => o.urls.original.replace("https://i.pximg.net/", `https://${config.web_hostname}/pixiv-proxy/`)).join('\n'));
+			let illust = Object.values(JSON.parse((await (await fetch(pixiv_url)).text()).match(/<meta name="preload-data" id="meta-preload-data" content='(.*)'>/)[1]).illust)[0];
+			let msg = "";
+			for (let i = 0; i < illust.pageCount; i++) {
+				msg += illust.urls.original.replace('p0', 'p'+i).replace("https://i.pximg.net/", `https://${config.web_hostname}/pixiv-proxy/`) + '\n';
+			}
+			await message.channel.send(msg);
 		} catch (error) {
 			console.error("pixiv embed error,", error.message);
+			message.react('⚠');
 		}
 	}
 });