Add custom menu in downloader plugin ("download playlist" item)

plugins/downloader/menu.js

@@ -0,0 +1,63 @@
+const { existsSync, mkdirSync } = require("fs");
+const { join } = require("path");
+const { URL } = require("url");
+
+const { ipcMain } = require("electron");
+const is = require("electron-is");
+const ytpl = require("ytpl");
+
+const { sendError } = require("./back");
+const { defaultMenuDownloadLabel, getFolder } = require("./utils");
+
+let downloadLabel = defaultMenuDownloadLabel;
+
+module.exports = (win, options, refreshMenu) => [
+	{
+		label: downloadLabel,
+		click: async () => {
+			const currentURL = win.webContents.getURL();
+			const playlistID = new URL(currentURL).searchParams.get("list");
+			if (!playlistID) {
+				sendError(win, new Error("No playlist ID found"));
+				return;
+			}
+
+			const playlist = await ytpl(playlistID);
+			const playlistTitle = playlist.title;
+
+			const folder = getFolder(options.downloadFolder);
+			const playlistFolder = join(folder, playlistTitle);
+			if (existsSync(playlistFolder)) {
+				sendError(
+					win,
+					new Error(`The folder ${playlistFolder} already exists`)
+				);
+				return;
+			}
+			mkdirSync(playlistFolder, { recursive: true });
+
+			ipcMain.on("downloader-feedback", (_, feedback) => {
+				downloadLabel = feedback;
+				refreshMenu();
+			});
+
+			downloadLabel = `Downloading "${playlistTitle}"`;
+			refreshMenu();
+
+			if (is.dev()) {
+				console.log(
+					`Downloading playlist "${playlistTitle}" (${playlist.items.length} songs)`
+				);
+			}
+
+			playlist.items.slice(0, options.playlistMaxItems).forEach((song) => {
+				win.webContents.send(
+					"downloader-download-playlist",
+					song,
+					playlistTitle,
+					options
+				);
+			});
+		},
+	},
+];