!@

save data already downloaded so proxy doesnt have to download it again

pixiv-embedder.js

@@ -22,23 +22,22 @@ client.on("messageCreate", async message => {
 	for (let pixiv_url of pixiv_urls) {
 		try {
 			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 image_urls = [];
-			for (let i = 0; i < illust.pageCount; i++) image_urls.push(illust.urls.original.replace('p0', 'p'+i));
-			if (image_urls.length <= 10) {
+			let images = [];
+			for (let i = 0; i < illust.pageCount; i++) images.push({url: illust.urls.original.replace('p0', 'p'+i)});
+			if (images.length <= 10) {
 				try {
-					let files = [];
-					for (let image_url of image_urls) {
-						files.push({attachment: await (await fetch(image_url,{headers:{"Referer":"https://www.pixiv.net/"}})).buffer(), name: image_url.split('/').pop()});
-					}
-					await message.channel.send({files});
+					await message.channel.send({files: images.map(image => ({attachment: image.data = await (await fetch(image_url, {headers: {"Referer": "https://www.pixiv.net/"}})).buffer(), name: image.url.split('/').pop()}))});
 				} catch (error) {
 					if (error.message == "Request entity too large") await fallback();
 					else throw error;
 				}
 			} else await fallback();
 			function fallback() {
-				image_urls = image_urls.map(url => url.replace("https://i.pximg.net/", `https://${config.web_hostname}/pixiv-proxy/`));
-				return message.channel.send(image_urls.join("\n"));
+				// save the data already downloaded
+				for (let image of images) {
+					fs.writeFileSync(config.data_dir + "pixiv-cache/" + image.url.split('?')[0].replace(/\//g, '\\'), image.data);
+				}
+				return message.channel.send(images.map(image => image.url.replace("https://i.pximg.net/", `https://${config.web_hostname}/pixiv-proxy/`)).join('\n'));
 			}
 		} catch (error) {
 			console.error("pixiv embed error,", error.stack);