feat: add @icon metadata

Merge pull request #125 from Wupb/patch-1

.eslintrc

@@ -20,6 +20,8 @@
         "no-useless-constructor": "off",
         "@typescript-eslint/no-useless-constructor": "error",
         "no-dupe-class-members": "off",
+        "no-void": "off",
+        "no-use-before-define": "off",
         "@typescript-eslint/no-dupe-class-members": "error",
         "@typescript-eslint/no-floating-promises": "warn",
         "@typescript-eslint/member-delimiter-style": "warn",

.github/workflows/release.yml

@@ -13,12 +13,16 @@ on:
       ref:
         description: 'The branch, tag or SHA to release from'
         required: false
+      chrome_ext_url:
+        description: 'URL to the Chrome Extension crx'
+        required: true
 
 env:
   VERSION: ${{ github.event.inputs.version }}
   NPM_TAG: ${{ github.event.inputs.npm_tag }}
   REF: ${{ github.event.inputs.ref || github.sha }}
   ARTIFACTS_DIR: ./.artifacts
+  CHROME_EXT_URL: ${{ github.event.inputs.chrome_ext_url }}
 
 jobs:
   release:
@@ -49,6 +53,15 @@ jobs:
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }} # 0301...
 
+      - name: NPM Publish msdl
+        run: |
+          cd ./src/msdl
+          sed -i "s/%VERSION%/$VERSION/" package.json
+          npm publish --tag $NPM_TAG
+          cd -
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
       - name: Publish Firefox Extension
         id: web-ext-build
         uses: kewisch/action-web-ext@v1
@@ -64,6 +77,8 @@ jobs:
           mkdir -p $ARTIFACTS_DIR
           cp dist/main.js $ARTIFACTS_DIR/musescore-downloader.user.js
           cp dist/ext.zip $ARTIFACTS_DIR/musescore-downloader.webextension.zip
+          wget -q $CHROME_EXT_URL -P $ARTIFACTS_DIR/
+          wget -q https://github.com/Xmader/musescore-downloader/archive/$REF.tar.gz -O $ARTIFACTS_DIR/source.tar.gz
       - run: bash ./.github/workflows/get-signed-ext.sh
         env:
           EXT_ID: musescore-downloader
@@ -83,6 +98,7 @@ jobs:
           IPFS_HASH: ${{ steps.ipfs.outputs.hash }}
         run: |
           cd $ARTIFACTS_DIR
+          rm *.tar.gz
 
           files=$(ls .)
           assets=()

.gitignore

@@ -67,3 +67,4 @@ typings/
 
 dist/cache
 dist/ext*
+dist/cli.js

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019-2020 Xmader
+Copyright (c) 2019-2021 Xmader
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,7 +1,7 @@
   
 # musescore-downloader
 
-**English** | [简体中文](#musescore-downloader-1)  | [Español](#musescore-downloader-2) 
+**English** | [简体中文](#musescore-downloader-1)  | [Español](#musescore-downloader-2)  | [Italian](#musescore-downloader-3) 
 
 > download sheet music from musescore.com for free, no login or Musescore Pro required
 
@@ -38,6 +38,18 @@ There is an article on their website: [Score download becomes a part of the Pro
 
 ## Installation
 
+### CLI Usage
+
+(recommended, more bulletproof)
+
+1. Install Node.js LTS (https://nodejs.org/)
+2. Open a command line terminal or command prompt
+3. Type `npx msdl`, enter  
+  (`npx msdl` will always run the latest version)
+4. Follow the instructions
+
+[source code](/src/cli.ts)
+
 ### Install as Userscript
 
 This script is available as a [Userscript](https://en.wikipedia.org/wiki/Userscript). To use this Userscript, you need to first install a [user script manager](https://greasyfork.org/en/help/installing-user-scripts), like Tampermonkey.
@@ -51,7 +63,7 @@ Install this script from <https://msdl.librescore.org/install.user.js>
 
 The alternative method is to install this script as a Chrome or Firefox extension.
 
-You may install the browser extension directly from [addons.mozilla.org (for Firefox)](https://addons.mozilla.org/en-US/firefox/addon/musescore-downloader/) or [chrome web store (for Chrome and Chromium based browsers)](https://chrome.google.com/webstore/detail/fmmnkcdlphpgbdcdfnjkldfljedbbokp).
+You may install the browser extension directly from [addons.mozilla.org (for Firefox)](https://addons.mozilla.org/en-US/firefox/addon/musescore-downloader/) or [chrome web store (for Chrome and Chromium based browsers)](https://chrome.google.com/webstore/detail/mhdlcdhakmmikknpefblmnhdhjloanjc).
 
 The up-to-date version can be found on the [Github Releases](https://github.com/Xmader/musescore-downloader/releases) page.
 
@@ -231,6 +243,7 @@ En tercer lugar, la propiedad de los derechos de autor de los contenidos de muse
 
 Si no podemos ver pruebas de que musescore.com realmente paga la tarifa de licencia a los propietarios de los derechos de autor, podemos pensar que es solo una excusa para obtener ganancias robando.
 
+
 > utilizo ilegalmente nuestra API privada con contenido de música licenciada.
 
 No, el documento de la API está en https://developers.musescore.com/.
@@ -239,3 +252,123 @@ No, el documento de la API está en https://developers.musescore.com/.
 **Lanzaré una alternativa de código abierto (GPLv3), sin servidor, offline, y totalmente gratuita a musescore.com, [LibreScore](https://github.com/LibreScore). ETodos son bienvenidos a unirse al desarrollo del proyecto abriendo un problema o [enviándome un correo electrónico.](mailto:i@xmader.com).**
 
 **Además, estoy desarrollando musescore.js. Podría convertir un archivo mscz en cualquier formato que admita el software Musescore, y en el navegador.** Dado que el software Musescore es de código abierto bajo [GPL](https://github.com/musescore/MuseScore/blob/master/LICENSE.GPL), Podría traducir el código fuente a js o compilarlo en asm.js/WASM.
+
+---
+
+# musescore-downloader
+
+[English](#musescore-downloader) | [简体中文](#musescore-downloader-1) | [Español](#musescore-downloader-2) | **Italian**
+
+> Scarica spartiti da musescore.com gratuitamente, non è richisto login o Musescore Pro.
+
+**Avvia questo progetto su [Github](https://github.com/Xmader/musescore-downloader) e [Gitlab](https://gitlab.com/Xmader/musescore-downloader)** (Mirror)   
+
+[![Discord](https://img.shields.io/discord/774491656643674122?color=7289da&label=Discord&logo=discord)](https://discord.gg/DKu7cUZ4XQ)
+
+Hai bisogno di datset di musescore.com per l'analisi/machine learning? Prova [musescore-dataset](https://github.com/Xmader/musescore-dataset).
+
+![](https://cdn.statically.io/gh/Xmader/musescore-downloader/master/screenshot.png?env=dev)
+
+## Utilizzo leale
+
+Solo per scopi di ricerca e studio
+
+## In breve
+
+Di recente è necessario un account Musescore Pro ($6,99/mese) per scaricare spartiti da musescore.com.
+(Tuttavia, alcuni mesi fa, era possibile scaricare gratuitamente.)
+
+La società Musescore ha affermato che a causa di copyright e licenze, devono pagare i proprietari del copyright.
+
+Molte musiche su musescore.com sono già di **Pubblico Dominio**, il che significa che o l'autore le ha pubblicate in pubblico dominio o l'autore è morto da oltre 70 anni.
+Devono pagare anche i compositori che sono morti centinaia di anni fa?
+*Aggiornamento: gli spartiti di Dominio Pubblico, ora possono essere scaricati senza Musescore Pro, ma hai ancora bisogno di un account per poter scaricare.*
+
+
+Inoltre, ci sono molti autori di spartiti su musescore.com che hanno creato le proprie canzoni e le hanno pubblicate sotto licenza [CC-BY-**NC** (Creative Commons Attribution-**NonCommercial**)](https://creativecommons.org/licenses/by-nc/4.0/).  
+È illegale venderli **a scopo di lucro**? 
+*Nota: Mettere annunci (per vendere Musescore Pro) sul sito web significa anche che lo usano per generare entrate.*
+
+Questo è assolutamente inaccettabile e l'unico scopo è trarre profitto dal furto.
+
+C'è un articolo sul loro sito web: [Il download degli spartiti diventa parte dell'abbonamento Pro](https://musescore.com/groups/improving-musescore-com/discuss/5044610)
+
+## Installazione
+
+### Utilizzo della CLI
+
+(consigliato)
+
+1. Installa Node.js LTS (https://nodejs.org/)
+2. Apri il terminale CMD o Powershell
+3. Digita `npx msdl`, e premi invio  
+  (`npx msdl` eseguirà sempre l'ultima versione)
+4. Seguire le istruzioni
+
+[codice sorgente](/src/cli.ts)
+
+### Installa come Userscript
+
+Questo script è disponibile come [Userscript](https://en.wikipedia.org/wiki/Userscript). Per utilizzare questo Userscript, è necessario prima installare un [gestore di script utente].(https://greasyfork.org/en/help/installing-user-scripts), come Tampermonkey.
+
+1. Installa [Tampermonkey](https://www.tampermonkey.net/)
+
+2. ~~Installa da [Greasy Fork](https://greasyfork.org/scripts/391931).~~   [#42](https://github.com/Xmader/musescore-downloader/issues/42)  
+Installa lo script da <https://msdl.librescore.org/install.user.js>
+
+### Installa come estensione web
+
+Il metodo alternativo consiste nell'installare questo script come estensione per Chrome o Firefox.
+
+Puoi installare l'estensione del browser direttamente da [addons.mozilla.org (per Firefox)](https://addons.mozilla.org/en-US/firefox/addon/musescore-downloader/) o dal [web store di Chrome (per browser basati su Chrome e Chromium)](https://chrome.google.com/webstore/detail/mhdlcdhakmmikknpefblmnhdhjloanjc).
+
+La versione aggiornata può essere trovata nella pagina [Github Releases](https://github.com/Xmader/musescore-downloader/releases).
+
+## Istruzioni per il building
+
+Assicurati di avere installato [Node.js](https://nodejs.org/en/).
+
+```bash
+npm install
+npm run build     # build come script utente
+npm run pack:ext  # pack Web Extension
+```
+
+## Mirrors
+
+* Visualizza questo progetto su [Github](https://github.com/Xmader/musescore-downloader) (Repo principale) | [Gitlab](https://gitlab.com/Xmader/musescore-downloader) (Mirror)
+
+* Questo repo è disponibile anche su IPFS per evitare la rimozione DMCA: [ipns://msdl.librescore.org](https://ipfs.io/ipns/msdl.librescore.org/)
+
+## Feedback
+
+[Problemi con GitHub](https://github.com/Xmader/musescore-downloader/issues)
+
+## Licenza
+
+MIT
+
+## Informazioni sulla richiesta di rimozione
+
+Ho ricevuto un'e-mail di [richiesta di rimozione](https://github.com/Xmader/musescore-downloader/issues/5)da uno degli sviluppatori di Musescore, ma ho qualcosa da ridire.
+
+> Non tutti i contenuti di pubblico dominio su musescore.com sono concessi in licenza dai principali editori musicali (Alfred, EMI, Sony, ecc.). State distribuendo gratuitamente contenuti musicali con licenza da Musescore.com violando i loro diritti.
+
+In primo luogo, se violi i diritti dei principali editori musicali, la richiesta di rimozione dovrebbe essere inviata da loro invece che dagli sviluppatori di Musescore.
+
+In secondo luogo, musescore.com non è un semplice sito di condivisione di musica. Gli autori di spartiti devono trascrivere e riorganizzare le canzoni originali in spartiti, non solo copiare file da qualche altra parte su musescore.com. Di conseguenza, la licenza dovrebbe concentrarsi sui diritti di trascrizione / riorganizzazione degli autori di spartiti, invece che sui diritti di condivisione della musica su alcuni siti web.
+
+In terzo luogo, la proprietà del copyright dei contenuti su musescore.com non è chiara. Non tutte le canzoni di pubblico dominio su musescore.com sono di proprietà dei principali editori musicali. Ci sono molti piccoli editori musicali e cantautori indipendenti. Le canzoni potrebbero essere concesse in licenza con licenze gratuite come Creative Commons. Inoltre, ci sono molti autori che hanno creato le proprie canzoni e pubblicato gli spartiti su musescore.com; Musescore.com paga questi autori?
+
+Se ci sono prove che musescore.com paga davvero la tassa di licenza ai proprietari del copyright, potremmo pensare che sia solo una scusa per ottenere profitto dal furto.
+
+> utilizzi illegalmente la nostra API privata con contenuti musicali con licenza.
+
+No, il documento API è su https://developers.musescore.com/.
+
+
+**Avvierò un'alternativa open source (GPLv3), serverless, offline-first, frontend-first e totalmente gratuita a musescore.com, [LibreScore](https://github.com/LibreScore). Tutti sono invitati a partecipare allo sviluppo del progetto aprendo una issue o [inviandomi un'e-mail](mailto:i@xmader.com).**
+
+**Inoltre, sto sviluppando musescore.js. Potrebbe convertire un file mscz in qualsiasi formato supportato dal software Musescore e nel browser.** Poiché il software Musescore è open source sotto [GPL](https://github.com/musescore/MuseScore/blob/master/LICENSE.GPL), potrei tradurre il codice sorgente in js o compilarlo in asm.js/WASM.
+
+---

package.json

@@ -1,8 +1,9 @@
 {
   "name": "musescore-downloader",
-  "version": "0.15.17",
+  "version": "0.24.1",
   "description": "download sheet music from musescore.com for free, no login or Musescore Pro required | 免登录、免 Musescore Pro，免费下载 musescore.com 上的曲谱",
   "main": "dist/main.js",
+  "bin": "dist/cli.js",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/Xmader/musescore-downloader.git"
@@ -24,7 +25,7 @@
   "content_scripts": [
     {
       "matches": [
-        "*://musescore.com/*/*"
+        "*://*.musescore.com/*/*"
       ],
       "js": [
         "src/web-ext.js"
@@ -36,23 +37,30 @@
     "dist/main.js"
   ],
   "dependencies": {
-    "pdfkit": "git+https://github.com/Xmader/pdfkit.git",
+    "@librescore/fonts": "^0.4.0",
-    "svg-to-pdfkit": "^0.1.8",
+    "@librescore/sf3": "^0.3.0",
-    "webmscore": "^0.10.4"
+    "detect-node": "^2.0.4",
+    "inquirer": "^7.3.3",
+    "node-fetch": "^2.6.1",
+    "ora": "^5.1.0",
+    "webmscore": "^0.18.0"
   },
   "devDependencies": {
-    "@rollup/plugin-json": "^4.0.0",
+    "@rollup/plugin-json": "^4.1.0",
     "@types/file-saver": "^2.0.1",
-    "@types/pdfkit": "^0.10.4",
+    "@types/inquirer": "^7.3.1",
-    "rollup": "^1.26.3",
+    "@types/pdfkit": "^0.10.6",
+    "pdfkit": "git+https://github.com/Xmader/pdfkit.git",
+    "rollup": "^1.32.1",
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-builtins": "^2.1.2",
     "rollup-plugin-node-globals": "^1.4.0",
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-string": "^3.0.0",
     "rollup-plugin-typescript": "^1.0.1",
-    "tslib": "^1.10.0",
+    "svg-to-pdfkit": "^0.1.8",
-    "typescript": "^4.1.1-rc"
+    "tslib": "^1.14.1",
+    "typescript": "^4.1.2"
   },
   "scripts": {
     "build": "rollup -c",

rollup.config.js

@@ -15,7 +15,12 @@ const getBannerText = () => {
     return bannerText
 }
 
-const plugins = [
+const getWrapper = (startL, endL) => {
+    const js = fs.readFileSync("./src/wrapper.js", "utf-8")
+    return js.split(/\n/g).slice(startL, endL).join("\n")
+}
+
+const basePlugins = [
     typescript({
         target: "ES6",
         sourceMap: false,
@@ -37,12 +42,6 @@ const plugins = [
     string({
         include: "**/*.css",
     }),
-    builtins(),
-    nodeGlobals({
-        dirname: false,
-        filename: false,
-        baseDir: false,
-    }),
     {
         /**
          * remove tslib license comments
@@ -60,6 +59,16 @@ const plugins = [
     },
 ]
 
+const plugins = [
+    ...basePlugins,
+    builtins(),
+    nodeGlobals({
+        dirname: false,
+        filename: false,
+        baseDir: false,
+    }),
+]
+
 export default [
     {
         input: "src/worker.ts",
@@ -79,9 +88,19 @@ export default [
             format: "iife",
             sourcemap: false,
             banner: getBannerText,
-            intro: "// fix for Greasemonkey\nwindow.eval('(' + function () {",
+            intro: () => getWrapper(0, -1),
-            outro: "}.toString() + ')()')"
+            outro: () => getWrapper(-1)
         },
         plugins,
     },
+    {
+        input: "src/cli.ts",
+        output: {
+            file: "dist/cli.js",
+            format: "cjs",
+            banner: "#!/usr/bin/env node",
+            sourcemap: false,
+        },
+        plugins: basePlugins,
+    },
 ]

src/btn.css

@@ -1,31 +1,46 @@
 div {
-  flex-wrap: wrap;
+  width: 422px;
-  display: flex;
+  right: 0;
+  margin: 0 18px 18px 0;
+
+  text-align: center;
   align-items: center;
-  font-family: 'Open Sans', 'Roboto', 'Helvetica neue', Helvetica, sans-serif;
+  font-family: 'Inter', 'Helvetica neue', Helvetica, sans-serif;
   position: absolute;
-  z-index: 999;
+  z-index: 9999;
   background: #f6f6f6;
+  min-width: 230px;
+
+  /* pass the scroll event through the btns background */
+  pointer-events: none;
+}
+
+@media screen and (max-width: 950px) {
+  div {
+    width: auto !important;
+  }
 }
 
 button {
-  width: 205px !important;
+  width: 178px !important;
-  height: 38px;
+  min-width: 178px;
+  height: 40px;
 
   color: #fff;
-  background: #1f74bd;
+  background: #2e68c0;
 
   cursor: pointer;
+  pointer-events: auto;
 
-  margin-bottom: 4px;
+  margin-bottom: 8px;
-  margin-right: 4px;
+  margin-right: 8px;
   padding: 4px 12px;
 
   justify-content: start;
   align-self: center;
 
   font-size: 16px;
-  border-radius: 2px;
+  border-radius: 6px;
   border: 0;
 
   display: inline-flex;
@@ -34,6 +49,25 @@ button {
   font-family: inherit;
 }
 
+/* fix `View in LibreScore` button text overflow */
+button:last-of-type {
+  width: unset !important;
+}
+
+button:hover {
+  background: #1a4f9f;
+}
+
+/* light theme btn */
+button.light {
+  color: #2e68c0;
+  background: #e1effe;
+}
+
+button.light:hover {
+  background: #c3ddfd;
+}
+
 svg {
   display: inline-block;
   margin-right: 5px;

src/btn.ts

@@ -1,42 +1,76 @@
 
+import { ScoreInfo } from './scoreinfo'
 import { loadMscore, WebMscore } from './mscore'
-import { useTimeout, windowOpen, console } from './utils'
+import { useTimeout, windowOpenAsync, console, attachShadow, DISCORD_URL } from './utils'
+import { isGmAvailable, _GM } from './gm'
 import i18n from './i18n'
 // @ts-ignore
 import btnListCss from './btn.css'
 
 type BtnElement = HTMLButtonElement
 
+export enum ICON {
+  DOWNLOAD = 'M9.6 2.4h4.8V12h2.784l-5.18 5.18L6.823 12H9.6V2.4zM19.2 19.2H4.8v2.4h14.4v-2.4z',
+  LIBRESCORE = 'm5.4837 4.4735v10.405c-1.25-0.89936-3.0285-0.40896-4.1658 0.45816-1.0052 0.76659-1.7881 2.3316-0.98365 3.4943 1 1.1346 2.7702 0.70402 3.8817-0.02809 1.0896-0.66323 1.9667-1.8569 1.8125-3.1814v-5.4822h8.3278v9.3865h9.6438v-2.6282h-6.4567v-12.417c-4.0064-0.015181-8.0424-0.0027-12.06-0.00676zm0.54477 2.2697h8.3278v1.1258h-8.3278v-1.1258z',
+}
+
 const getBtnContainer = (): HTMLDivElement => {
-  const container = document.querySelectorAll('aside>section>section')[0]
+  const els = [...document.querySelectorAll('span')]
-  const btnParent = [...container.children].find((div) => {
+  const el = els.find(b => {
-    const b = div.querySelector('button, .button')
+    const text = b?.textContent?.replace(/\s/g, '') || ''
-    const text = b ? b.outerHTML.replace(/\s/g, '') : ''
     return text.includes('Download') || text.includes('Print')
   }) as HTMLDivElement | null
-  if (!btnParent) throw new Error('btn parent not found')
+  const btnParent = el?.parentElement?.parentElement as HTMLDivElement | undefined
+  if (!btnParent || !(btnParent instanceof HTMLDivElement)) throw new Error('btn parent not found')
   return btnParent
 }
 
-const buildDownloadBtn = () => {
+const buildDownloadBtn = (icon: ICON, lightTheme = false) => {
   const btn = document.createElement('button')
   btn.type = 'button'
+  if (lightTheme) btn.className = 'light'
 
   // build icon svg element
   const svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
   svg.setAttribute('viewBox', '0 0 24 24')
   const svgPath = document.createElementNS('http://www.w3.org/2000/svg', 'path')
-  svgPath.setAttribute('d', 'M9.6 2.4h4.8V12h2.784l-5.18 5.18L6.823 12H9.6V2.4zM19.2 19.2H4.8v2.4h14.4v-2.4z')
+  svgPath.setAttribute('d', icon)
-  svgPath.setAttribute('fill', '#fff')
+  svgPath.setAttribute('fill', lightTheme ? '#2e68c0' : '#fff')
   svg.append(svgPath)
 
   const textNode = document.createElement('span')
   btn.append(svg, textNode)
 
-  return {
+  return btn
-    btn,
-    textNode,
 }
+
+const cloneBtn = (btn: HTMLButtonElement) => {
+  const n = btn.cloneNode(true) as HTMLButtonElement
+  n.onclick = btn.onclick
+  return n
+}
+
+function getScrollParent (node: HTMLElement): HTMLElement {
+  if (node.scrollHeight > node.clientHeight) {
+    return node
+  } else {
+    return getScrollParent(node.parentNode as HTMLElement)
+  }
+}
+
+function onPageRendered (getEl: () => HTMLElement) {
+  return new Promise<HTMLElement>((resolve) => {
+    const observer = new MutationObserver(() => {
+      try {
+        const el = getEl()
+        if (el) {
+          observer.disconnect()
+          resolve(el)
+        }
+      } catch { }
+    })
+    observer.observe(document.querySelector('div > section') ?? document.body, { childList: true, subtree: true })
+  })
 }
 
 interface BtnOptions {
@@ -44,6 +78,8 @@ interface BtnOptions {
   readonly action: BtnAction;
   readonly disabled?: boolean;
   readonly tooltip?: string;
+  readonly icon?: ICON;
+  readonly lightTheme?: boolean;
 }
 
 export enum BtnListMode {
@@ -57,38 +93,55 @@ export class BtnList {
   constructor (private getBtnParent: () => HTMLDivElement = getBtnContainer) { }
 
   add (options: BtnOptions): BtnElement {
-    const { btn, textNode } = buildDownloadBtn()
+    const btnTpl = buildDownloadBtn(options.icon ?? ICON.DOWNLOAD, options.lightTheme)
-    const setText = (str: string): void => {
+    const setText = (btn: BtnElement) => {
-      textNode.textContent = str
+      const textNode = btn.querySelector('span')
+      return (str: string): void => {
+        if (textNode) textNode.textContent = str
+      }
     }
 
-    setText(options.name)
+    setText(btnTpl)(options.name)
 
-    btn.onclick = (): void => {
+    btnTpl.onclick = function () {
-      options.action(options.name, btn, setText)
+      const btn = this as BtnElement
+      options.action(options.name, btn, setText(btn))
     }
 
-    this.list.push(btn)
+    this.list.push(btnTpl)
 
     if (options.disabled) {
-      btn.disabled = options.disabled
+      btnTpl.disabled = options.disabled
     }
 
     if (options.tooltip) {
-      btn.title = options.tooltip
+      btnTpl.title = options.tooltip
     }
 
-    return btn
+    // add buttons to the userscript manager menu
+    if (isGmAvailable('registerMenuCommand')) {
+      // eslint-disable-next-line no-void
+      void _GM.registerMenuCommand(options.name, () => {
+        options.action(options.name, btnTpl, () => undefined)
+      })
+    }
+
+    return btnTpl
+  }
+
+  private _positionBtns (anchorDiv: HTMLDivElement, newParent: HTMLDivElement) {
+    let { top } = anchorDiv.getBoundingClientRect()
+    top += window.scrollY // relative to the entire document instead of viewport
+    if (top > 0) {
+      newParent.style.top = `${top}px`
+    } else {
+      newParent.style.top = '0px'
+    }
   }
 
   private _commit () {
-    let btnParent: HTMLDivElement = document.createElement('div')
+    const btnParent = document.querySelector('div') as HTMLDivElement
-    try {
+    const shadow = attachShadow(btnParent)
-      btnParent = this.getBtnParent()
-    } catch (err) {
-      console.error(err)
-    }
-    const shadow = btnParent.attachShadow({ mode: 'closed' })
 
     // style the shadow DOM
     const style = document.createElement('style')
@@ -96,39 +149,47 @@ export class BtnList {
     shadow.append(style)
 
     // hide buttons using the shadow DOM
-    const newParent = btnParent.cloneNode(false) as HTMLDivElement
-    newParent.append(...this.list.map(e => e.cloneNode(true)))
-    shadow.append(newParent)
     const slot = document.createElement('slot')
     shadow.append(slot)
 
+    const newParent = document.createElement('div')
+    newParent.append(...this.list.map(e => cloneBtn(e)))
+    shadow.append(newParent)
+
+    // default position
+    newParent.style.top = `${window.innerHeight - newParent.getBoundingClientRect().height}px`
+
+    void onPageRendered(this.getBtnParent).then((anchorDiv: HTMLDivElement) => {
+      const pos = () => this._positionBtns(anchorDiv, newParent)
+      pos()
+
+      // reposition btns when window resizes
+      window.addEventListener('resize', pos, { passive: true })
+
+      // reposition btns when scrolling
+      const scroll = getScrollParent(anchorDiv)
+      scroll.addEventListener('scroll', pos, { passive: true })
+    })
+
     return btnParent
   }
 
   /**
    * replace the template button with the list of new buttons
    */
-  commit (mode: BtnListMode = BtnListMode.InPage): void {
+  async commit (mode: BtnListMode = BtnListMode.InPage): Promise<void> {
     switch (mode) {
       case BtnListMode.InPage: {
-        // fallback to BtnListMode.ExtWindow
+        let el: Element
         try {
-          this.getBtnParent()
+          el = this._commit()
         } catch {
+          // fallback to BtnListMode.ExtWindow
           return this.commit(BtnListMode.ExtWindow)
         }
-
-        let el: Element = this._commit()
         const observer = new MutationObserver(() => {
           // check if the buttons are still in document when dom updates 
           if (!document.contains(el)) {
-            try {
-              this.getBtnParent()
-            } catch {
-              observer.disconnect()
-              this.commit(BtnListMode.ExtWindow)
-            }
-
             // re-commit
             // performance issue?
             el = this._commit()
@@ -140,7 +201,7 @@ export class BtnList {
 
       case BtnListMode.ExtWindow: {
         const div = this._commit()
-        const w = windowOpen('', undefined, 'resizable,width=230,height=270')
+        const w = await windowOpenAsync(undefined, '', undefined, 'resizable,width=230,height=270')
         // eslint-disable-next-line no-unused-expressions
         w?.document.body.append(div)
         window.addEventListener('unload', () => w?.close())
@@ -166,28 +227,25 @@ export namespace BtnAction {
     else return url
   }
 
-  export const openUrl = (url: UrlInput): BtnAction => {
+  export const download = (url: UrlInput, fallback?: () => Promisable<void>, timeout?: number, target?: '_blank'): BtnAction => {
-    return process(async (): Promise<any> => {
-      windowOpen(await normalizeUrlInput(url))
-    })
-  }
-
-  export const download = (url: UrlInput, fallback?: () => Promisable<void>, timeout?: number): BtnAction => {
     return process(async (): Promise<void> => {
       const _url = await normalizeUrlInput(url)
       const a = document.createElement('a')
       a.href = _url
+      if (target) a.target = target
       a.dispatchEvent(new MouseEvent('click'))
     }, fallback, timeout)
   }
 
-  export const mscoreWindow = (fn: (w: Window, score: WebMscore, processingTextEl: ChildNode) => any): BtnAction => {
+  export const openUrl = download
+
+  export const mscoreWindow = (scoreinfo: ScoreInfo, fn: (w: Window, score: WebMscore, processingTextEl: ChildNode) => any): BtnAction => {
     return async (btnName, btn, setText) => {
       const _onclick = btn.onclick
       btn.onclick = null
       setText(i18n('PROCESSING')())
 
-      const w = windowOpen('') as Window
+      const w = await windowOpenAsync(btn, '') as Window
       const txt = document.createTextNode(i18n('PROCESSING')())
       w.document.body.append(txt)
 
@@ -206,7 +264,7 @@ export namespace BtnAction {
         btn.onclick = _onclick
       })
 
-      score = await loadMscore(w)
+      score = await loadMscore(scoreinfo, w)
 
       fn(w, score, txt)
     }
@@ -230,6 +288,17 @@ export namespace BtnAction {
           setText(name)
         } else {
           setText(i18n('BTN_ERROR')())
+          // ask user to send Discord message
+          alert(
+            '❌Download Failed!\n\n' +
+            'Send your URL to the #dataset-bugs channel ' +
+            'in the LibreScore Community Discord server:\n' + DISCORD_URL,
+          )
+          // open Discord on 'OK'
+          const a = document.createElement('a')
+          a.href = DISCORD_URL
+          a.target = '_blank'
+          a.dispatchEvent(new MouseEvent('click'))
         }
       }
 

src/cli.ts

@@ -0,0 +1,206 @@
+
+/* eslint-disable @typescript-eslint/no-var-requires */
+/* eslint-disable no-void */
+
+import fs from 'fs'
+import path from 'path'
+import os from 'os'
+import { fetchMscz, setMscz, MSCZ_URL_SYM } from './mscz'
+import { loadMscore, INDV_DOWNLOADS, WebMscore } from './mscore'
+import { ScoreInfo, ScoreInfoHtml, ScoreInfoObj, getActualId } from './scoreinfo'
+import { getLibreScoreLink } from './librescore-link'
+import { escapeFilename, DISCORD_URL } from './utils'
+import { isNpx, getVerInfo, getSelfVer } from './npm-data'
+import i18n from './i18n'
+
+const inquirer: typeof import('inquirer') = require('inquirer')
+const ora: typeof import('ora') = require('ora')
+const chalk: typeof import('chalk') = require('chalk')
+
+const SCORE_URL_PREFIX = 'https://(s.)musescore.com/'
+const SCORE_URL_REG = /https:\/\/(s\.)?musescore\.com\//
+const EXT = '.mscz'
+
+interface Params {
+  fileInit: string;
+  confirmed: boolean;
+  part: number;
+  types: number[];
+  dest: string;
+}
+
+void (async () => {
+  const arg = process.argv[2]
+  if (['-v', '--version'].includes(arg)) { // ran with flag -v or --version, `msdl -v`
+    console.log(getSelfVer()) // print musescore-downloader version
+    return // exit process
+  }
+
+  // Determine platform and paste message
+  const platform = os.platform()
+  let pasteMessage = ''
+  if (platform === 'win32') {
+    pasteMessage = 'right-click to paste'
+  } else if (platform === 'linux') {
+    pasteMessage = 'usually Ctrl+Shift+V to paste'
+  } // For MacOS, no hint is needed because the paste shortcut is universal.
+
+  let scoreinfo: ScoreInfo
+  let librescoreLink: Promise<string> | undefined
+  // ask for the page url or path to local file
+  const { fileInit } = await inquirer.prompt<Params>({
+    type: 'input',
+    name: 'fileInit',
+    message: 'Score URL or path to local MSCZ file:',
+    suffix: '\n  ' +
+      `(starts with "${SCORE_URL_PREFIX}" or local filepath ends with "${EXT}") ` +
+      `${chalk.bgGray(pasteMessage)}\n `,
+    validate (input: string) {
+      return input &&
+        (
+          !!input.match(SCORE_URL_REG) ||
+          (input.endsWith(EXT) && fs.statSync(input).isFile())
+        )
+    },
+    default: arg,
+  })
+
+  const isLocalFile = fileInit.endsWith(EXT)
+  if (!isLocalFile) {
+    // request scoreinfo
+    scoreinfo = await ScoreInfoHtml.request(fileInit)
+    try {
+      await getActualId(scoreinfo as any)
+    } catch (err) {
+      console.error(err)
+    }
+
+    // confirmation
+    const { confirmed } = await inquirer.prompt<Params>({
+      type: 'confirm',
+      name: 'confirmed',
+      message: 'Continue?',
+      prefix: `${chalk.yellow('!')} ` +
+        `ID: ${scoreinfo.id}\n  ` +
+        `Title: ${scoreinfo.title}\n `,
+      default: true,
+    })
+    if (!confirmed) return
+
+    // initiate LibreScore link request
+    librescoreLink = getLibreScoreLink(scoreinfo)
+    librescoreLink.catch(() => '') // silence this unhandled Promise rejection
+
+    // print a blank line to the terminal
+    console.log()
+  } else {
+    scoreinfo = new ScoreInfoObj(0, path.basename(fileInit, EXT))
+  }
+
+  const spinner = ora({
+    text: i18n('PROCESSING')(),
+    color: 'blue',
+    spinner: 'bounce',
+    indent: 0,
+  }).start()
+
+  let score: WebMscore
+  let metadata: import('webmscore/schemas').ScoreMetadata
+  try {
+    if (!isLocalFile) {
+      // fetch mscz file from the dataset, and cache it for side effect
+      await fetchMscz(scoreinfo)
+    } else {
+      // load local file
+      const data = await fs.promises.readFile(fileInit)
+      await setMscz(scoreinfo, data.buffer)
+    }
+
+    spinner.info('MSCZ file loaded')
+    if (!isLocalFile) {
+      spinner.info(`File URL: ${scoreinfo.store.get(MSCZ_URL_SYM) as string}`)
+    }
+    if (librescoreLink) {
+      try {
+        spinner.info(`${i18n('VIEW_IN_LIBRESCORE')()}: ${await librescoreLink}`)
+      } catch { } // it doesn't affect the main feature
+    }
+    spinner.start()
+
+    // load score using webmscore
+    score = await loadMscore(scoreinfo)
+    metadata = await score.metadata()
+
+    spinner.info('Score loaded by webmscore')
+  } catch (err) {
+    spinner.fail(err.message)
+    spinner.info(
+      'Send your URL to the #dataset-bugs channel in the LibreScore Community Discord server:\n  ' +
+      DISCORD_URL,
+    )
+    return
+  }
+  spinner.succeed('OK\n')
+
+  // build part choices
+  const partChoices = metadata.excerpts.map(p => ({ name: p.title, value: p.id }))
+  // add the "full score" option as a "part" 
+  partChoices.unshift({ value: -1, name: i18n('FULL_SCORE')() })
+  // build filetype choices
+  const typeChoices = INDV_DOWNLOADS.map((d, i) => ({ name: d.name, value: i }))
+
+  // part selection
+  const { part } = await inquirer.prompt<Params>({
+    type: 'list',
+    name: 'part',
+    message: 'Part Selection',
+    choices: partChoices,
+  })
+  const partName = partChoices[part + 1].name
+  await score.setExcerptId(part)
+
+  // filetype selection
+  const { types } = await inquirer.prompt<Params>({
+    type: 'checkbox',
+    name: 'types',
+    message: 'Filetype Selection',
+    choices: typeChoices,
+    validate (input: number[]) {
+      return input.length >= 1
+    },
+  })
+  const filetypes = types.map(i => INDV_DOWNLOADS[i])
+
+  // destination directory
+  const { dest } = await inquirer.prompt<Params>({
+    type: 'input',
+    name: 'dest',
+    message: 'Destination Directory:',
+    validate (input: string) {
+      return input && fs.statSync(input).isDirectory()
+    },
+    default: process.cwd(),
+  })
+
+  // export files
+  const fileName = scoreinfo.fileName || await score.titleFilenameSafe()
+  spinner.start()
+  await Promise.all(
+    filetypes.map(async (d) => {
+      const data = await d.action(score)
+      const n = `${fileName} - ${escapeFilename(partName)}.${d.fileExt}`
+      const f = path.join(dest, n)
+      await fs.promises.writeFile(f, data)
+      spinner.info(`Saved ${chalk.underline(f)}`)
+      spinner.start()
+    }),
+  )
+  spinner.succeed('OK')
+
+  if (!isNpx()) {
+    const { installed, latest, isLatest } = await getVerInfo()
+    if (!isLatest) {
+      console.log(chalk.yellowBright(`\nYour installed version (${installed}) of the musescore-downloader CLI is not the latest one (${latest})!\nRun npm i -g musescore-downloader@${latest} to update.`))
+    }
+  }
+})()

src/file.ts

@@ -1,13 +1,12 @@
 /* eslint-disable no-extend-native */
 /* eslint-disable @typescript-eslint/no-unsafe-return */
 
-import scoreinfo from './scoreinfo'
+import { hookNative } from './anti-detection'
-import { ALL, webpackGlobalOverride } from './webpack-hook'
 import { console } from './utils'
 
 type FileType = 'img' | 'mp3' | 'midi'
 
-const TYPE_REG = /id=(\d+)&type=(img|mp3|midi)/
+const TYPE_REG = /type=(img|mp3|midi)/
 
 /**
  * I know this is super hacky.
@@ -15,28 +14,42 @@ const TYPE_REG = /id=(\d+)&type=(img|mp3|midi)/
 const magicHookConstr = (() => {
   const l = {}
 
-  webpackGlobalOverride(ALL, (n, r, t) => { // override
+  try {
-    const e = n.exports
+    const p = Object.getPrototypeOf(document.body)
-    if (typeof e === 'object' && e.fetch) {
+    Object.setPrototypeOf(document.body, null)
-      const fn = e.fetch
+
-      t.d(e, 'fetch', () => {
+    hookNative(document.body, 'append', () => {
-        return function (...args) {
+      return function (...nodes: Node[]) {
-          const [url, init] = args
+        p.append.call(this, ...nodes)
+
+        if (nodes[0].nodeName === 'IFRAME') {
+          const iframe = nodes[0] as HTMLIFrameElement
+          const w = iframe.contentWindow as Window
+
+          hookNative(w, 'fetch', () => {
+            return function (url, init) {
               const token = init?.headers?.Authorization
               if (typeof url === 'string' && token) {
                 const m = url.match(TYPE_REG)
+                console.debug(url, token, m)
                 if (m) {
-              const type = m[2]
+                  const type = m[1]
                   // eslint-disable-next-line no-unused-expressions
                   l[type]?.(token)
                 }
               }
-          return fn(...args)
+              return fetch(url, init)
             }
           })
         }
+      }
     })
 
+    Object.setPrototypeOf(document.body, p)
+  } catch (err) {
+    console.error(err)
+  }
+
   return async (type: FileType) => {
     return new Promise<string>((resolve) => {
       l[type] = (token) => {
@@ -53,8 +66,8 @@ const magics: Record<FileType, Promise<string>> = {
   mp3: magicHookConstr('mp3'),
 }
 
-const getApiUrl = (type: FileType, index: number): string => {
+const getApiUrl = (id: number, type: FileType, index: number): string => {
-  return `/api/jmuse?id=${scoreinfo.id}&type=${type}&index=${index}&v2=1`
+  return `/api/jmuse?id=${id}&type=${type}&index=${index}&v2=1`
 }
 
 const getApiAuth = async (type: FileType, index: number): Promise<string> => {
@@ -66,12 +79,12 @@ const getApiAuth = async (type: FileType, index: number): Promise<string> => {
     // force to retrieve the MAGIC
     switch (type) {
       case 'midi': {
-        const el = document.querySelectorAll('.SD7H- > button')[3] as HTMLButtonElement
+        const el = document.querySelector('button[hasaccess]') as HTMLButtonElement
         el.click()
         break
       }
       case 'mp3': {
-        const el = document.querySelector('#playerBtnExprt') as HTMLButtonElement
+        const el = document.querySelector('button[title="Toggle Play"]') as HTMLButtonElement
         el.click()
         break
       }
@@ -87,8 +100,8 @@ const getApiAuth = async (type: FileType, index: number): Promise<string> => {
   return magic
 }
 
-export const getFileUrl = async (type: FileType, index = 0): Promise<string> => {
+export const getFileUrl = async (id: number, type: FileType, index = 0): Promise<string> => {
-  const url = getApiUrl(type, index)
+  const url = getApiUrl(id, type, index)
   const auth = await getApiAuth(type, index)
 
   const r = await fetch(url, {

src/gm.ts

@@ -0,0 +1,22 @@
+
+/**
+ * UserScript APIs
+ */
+declare const GM: {
+  /** https://www.tampermonkey.net/documentation.php#GM_info */
+  info: Record<string, any>;
+
+  /** https://www.tampermonkey.net/documentation.php#GM_registerMenuCommand */
+  registerMenuCommand (name: string, fn: () => any, accessKey?: string): Promise<number>;
+
+  /** https://github.com/Tampermonkey/tampermonkey/issues/881#issuecomment-639705679 */
+  addElement<K extends keyof HTMLElementTagNameMap> (tagName: K, properties: Record<string, any>): Promise<HTMLElementTagNameMap[K]>;
+}
+export const _GM = (typeof GM === 'object' ? GM : undefined) as GM
+
+type GM = typeof GM
+
+export const isGmAvailable = (requiredMethod: keyof GM = 'info'): boolean => {
+  return typeof GM !== 'undefined' &&
+    typeof GM[requiredMethod] !== 'undefined'
+}

src/i18n/en.ts

@@ -1,5 +1,5 @@
 
-import { createLocale } from './'
+import { createLocale } from './utils'
 
 export default createLocale({
   'PROCESSING' () {
@@ -27,6 +27,10 @@ export default createLocale({
     return 'Download individual parts (BETA)' as const
   },
 
+  'VIEW_IN_LIBRESCORE' () {
+    return 'View in LibreScore' as const
+  },
+
   'FULL_SCORE' () {
     return 'Full score' as const
   },

src/i18n/es.ts

@@ -1,5 +1,5 @@
 
-import { createLocale } from './'
+import { createLocale } from './utils'
 
 export default createLocale({
   'PROCESSING' () {
@@ -10,7 +10,7 @@ export default createLocale({
   },
 
   'DEPRECATION_NOTICE' (btnName: string) {
-    return `¡OBSOLETO!\nParecer ser que \`${btnName}\` no funciona correctamente, use \`Partes Indivduales\` en su lugar.\n(Esto todavía puede funcionar. Haga click en \`Aceptar\` para continuar.)` as const
+    return `¡OBSOLETO!\nUtilizar \`${btnName}\` dentro de \`Partes Indivduales\` en su lugar.\n(Esto todavía puede funcionar. Pulsa \`Aceptar\` para continuar.)` as const
   },
 
   'DOWNLOAD' <T extends string> (fileType: T) {
@@ -27,6 +27,10 @@ export default createLocale({
     return 'Descargar partes individuales (BETA)' as const
   },
 
+  'VIEW_IN_LIBRESCORE' () {
+    return 'Visualizar en LibreScore' as const
+  },
+
   'FULL_SCORE' () {
     return 'Partitura Completa' as const
   },

src/i18n/index.ts

@@ -1,6 +1,10 @@
 
+import isNodeJs from 'detect-node'
+
 import en from './en'
 import es from './es'
+import it from './it'
+import zh from './zh'
 
 export interface LOCALE {
   'PROCESSING' (): string;
@@ -14,25 +18,31 @@ export interface LOCALE {
   'IND_PARTS' (): string;
   'IND_PARTS_TOOLTIP' (): string;
 
-  'FULL_SCORE' (): string;
+  'VIEW_IN_LIBRESCORE' (): string;
-}
 
-/**
+  'FULL_SCORE' (): string;
- * type checking only so no missing keys
- */
-export function createLocale<OBJ extends LOCALE> (obj: OBJ): OBJ {
-  return Object.freeze(obj)
 }
 
 const locales = (<L extends { [n: string]: LOCALE } /** type checking */> (l: L) => Object.freeze(l))({
   en,
   es,
+  it,
+  zh,
 })
 
 // detect browser language
 const lang = (() => {
+  let userLangs: readonly string[]
+  if (!isNodeJs) {
+    userLangs = navigator.languages
+  } else {
+    const env = process.env
+    const l = env.LC_ALL || env.LC_MESSAGES || env.LANG || env.LANGUAGE || ''
+    userLangs = [l.slice(0, 2)]
+  }
+
   const names = Object.keys(locales)
-  const _lang = navigator.languages.find(l => {
+  const _lang = userLangs.find(l => {
     // find the first occurrence of valid languages
     return names.includes(l)
   })

src/i18n/it.ts

@@ -0,0 +1,37 @@
+
+import { createLocale } from './utils'
+
+export default createLocale({
+  'PROCESSING' () {
+    return 'Caricamento…' as const
+  },
+  'BTN_ERROR' () {
+    return '❌Download Fallito!' as const
+  },
+
+  'DEPRECATION_NOTICE' (btnName: string) {
+    return `¡DEPRECATO!\nUtilizzare \`${btnName}\` all'interno di \`Parti Indivduali\`.\n(Qusto potrebbe funzionare. Cliccare \`Ok\` per continuare.)` as const
+  },
+
+  'DOWNLOAD' <T extends string> (fileType: T) {
+    return `Scaricare ${fileType}` as const
+  },
+  'DOWNLOAD_AUDIO' <T extends string> (fileType: T) {
+    return `Scaricare ${fileType} Audio` as const
+  },
+
+  'IND_PARTS' () {
+    return 'Parti Singole' as const
+  },
+  'IND_PARTS_TOOLTIP' () {
+    return 'Scaricare Parti Singole (BETA)' as const
+  },
+
+  'VIEW_IN_LIBRESCORE' () {
+    return 'Visualizzare in LibreScore' as const
+  },
+
+  'FULL_SCORE' () {
+    return 'Spartito Completo' as const
+  },
+})

src/i18n/utils.ts

@@ -0,0 +1,9 @@
+
+import type { LOCALE } from './'
+
+/**
+ * type checking only so no missing keys
+ */
+export function createLocale<OBJ extends LOCALE> (obj: OBJ): OBJ {
+  return Object.freeze(obj)
+}

src/i18n/zh.ts

@@ -0,0 +1,37 @@
+
+import { createLocale } from './utils'
+
+export default createLocale({
+  'PROCESSING' () {
+    return '处理中…' as const
+  },
+  'BTN_ERROR' () {
+    return '❌下载失败!' as const
+  },
+
+  'DEPRECATION_NOTICE' (btnName: string) {
+    return `不建议使用\n请使用 \`单独分谱\` 里的 \`${btnName}\` 按钮代替\n（这也许仍会起作用。单击\`确定\`以继续。）` as const
+  },
+
+  'DOWNLOAD' <T extends string> (fileType: T) {
+    return `下载 ${fileType}` as const
+  },
+  'DOWNLOAD_AUDIO' <T extends string> (fileType: T) {
+    return `下载 ${fileType} 音频` as const
+  },
+
+  'IND_PARTS' () {
+    return '单独分谱' as const
+  },
+  'IND_PARTS_TOOLTIP' () {
+    return '下载单独分谱 (BETA)' as const
+  },
+
+  'VIEW_IN_LIBRESCORE' () {
+    return '在 LibreScore 中查看' as const
+  },
+
+  'FULL_SCORE' () {
+    return '完整乐谱' as const
+  },
+})

src/librescore-link.ts

@@ -0,0 +1,26 @@
+import { assertRes, getFetch } from './utils'
+import { getMainCid } from './mscz'
+import { ScoreInfo } from './scoreinfo'
+
+const _getLink = (indexingInfo: string) => {
+  const { scorepack } = JSON.parse(indexingInfo)
+  return `https://librescore.org/score/${scorepack as string}`
+}
+
+export const getLibreScoreLink = async (scoreinfo: ScoreInfo, _fetch = getFetch()): Promise<string> => {
+  const mainCid = await getMainCid(scoreinfo, _fetch)
+  const ref = scoreinfo.getScorepackRef(mainCid)
+  const url = `https://ipfs.infura.io:5001/api/v0/dag/get?arg=${ref}`
+
+  const r0 = await _fetch(url)
+  if (r0.status !== 500) {
+    assertRes(r0)
+  }
+  const res: { Message: string } | string = await r0.json()
+  if (typeof res !== 'string') {
+    // read further error msg
+    throw new Error(res.Message)
+  }
+
+  return _getLink(res)
+}

src/main.ts

@@ -1,17 +1,25 @@
 import './meta'
 
-import { waitForDocumentLoaded, saveAs, console } from './utils'
+import FileSaver from 'file-saver'
+import { waitForSheetLoaded, console } from './utils'
 import { downloadPDF } from './pdf'
 import { downloadMscz } from './mscz'
 import { getFileUrl } from './file'
-import { WebMscore, loadSoundFont } from './mscore'
+import { INDV_DOWNLOADS } from './mscore'
-import { BtnList, BtnAction, BtnListMode } from './btn'
+import { getLibreScoreLink } from './librescore-link'
-import scoreinfo from './scoreinfo'
+import { BtnList, BtnAction, BtnListMode, ICON } from './btn'
+import { ScoreInfoInPage, SheetInfoInPage, getActualId } from './scoreinfo'
 import i18n from './i18n'
 
+const { saveAs } = FileSaver
+
 const main = (): void => {
   const btnList = new BtnList()
-  const filename = scoreinfo.fileName
+  const scoreinfo = new ScoreInfoInPage(document)
+  const { fileName } = scoreinfo
+
+  // eslint-disable-next-line no-void
+  void getActualId(scoreinfo)
 
   let indvPartBtn: HTMLButtonElement | null = null
   const fallback = () => {
@@ -21,38 +29,38 @@ const main = (): void => {
 
   btnList.add({
     name: i18n('DOWNLOAD')('MSCZ'),
-    action: BtnAction.process(downloadMscz),
+    action: BtnAction.process(() => downloadMscz(scoreinfo, saveAs)),
   })
 
   btnList.add({
     name: i18n('DOWNLOAD')('PDF'),
-    action: BtnAction.process(downloadPDF, fallback, 3 * 60 * 1000 /* 3min */),
+    action: BtnAction.process(() => downloadPDF(scoreinfo, new SheetInfoInPage(document)), fallback, 3 * 60 * 1000 /* 3min */),
   })
 
   btnList.add({
-    name: i18n('DOWNLOAD')('MusicXML'),
+    name: i18n('DOWNLOAD')('MXL'),
-    action: BtnAction.mscoreWindow(async (w, score) => {
+    action: BtnAction.mscoreWindow(scoreinfo, async (w, score) => {
       const mxl = await score.saveMxl()
       const data = new Blob([mxl])
-      saveAs(data, `${filename}.mxl`)
+      saveAs(data, `${fileName}.mxl`)
       w.close()
     }),
   })
 
   btnList.add({
     name: i18n('DOWNLOAD')('MIDI'),
-    action: BtnAction.download(() => getFileUrl('midi'), fallback, 30 * 1000 /* 30s */),
+    action: BtnAction.download(() => getFileUrl(scoreinfo.id, 'midi'), fallback, 30 * 1000 /* 30s */),
   })
 
   btnList.add({
     name: i18n('DOWNLOAD')('MP3'),
-    action: BtnAction.download(() => getFileUrl('mp3'), fallback, 30 * 1000 /* 30s */),
+    action: BtnAction.download(() => getFileUrl(scoreinfo.id, 'mp3'), fallback, 30 * 1000 /* 30s */),
   })
 
   indvPartBtn = btnList.add({
     name: i18n('IND_PARTS')(),
     tooltip: i18n('IND_PARTS_TOOLTIP')(),
-    action: BtnAction.mscoreWindow(async (w, score, txt) => {
+    action: BtnAction.mscoreWindow(scoreinfo, async (w, score, txt) => {
       const metadata = await score.metadata()
       console.log('score metadata loaded by webmscore', metadata)
 
@@ -64,44 +72,7 @@ const main = (): void => {
       const fieldset = w.document.createElement('fieldset')
       w.document.body.append(fieldset)
 
-      interface IndividualDownload {
+      const downloads = INDV_DOWNLOADS
-        name: string;
-        fileExt: string;
-        action (score: WebMscore): Promise<Uint8Array>;
-      }
-
-      const downloads: IndividualDownload[] = [
-        {
-          name: i18n('DOWNLOAD')('PDF'),
-          fileExt: 'pdf',
-          action: (score) => score.savePdf(),
-        },
-        {
-          name: i18n('DOWNLOAD')('MSCZ'),
-          fileExt: 'mscz',
-          action: (score) => score.saveMsc('mscz'),
-        },
-        {
-          name: i18n('DOWNLOAD')('MusicXML'),
-          fileExt: 'mxl',
-          action: (score) => score.saveMxl(),
-        },
-        {
-          name: i18n('DOWNLOAD')('MIDI'),
-          fileExt: 'mid',
-          action: (score) => score.saveMidi(true, true),
-        },
-        {
-          name: i18n('DOWNLOAD_AUDIO')('FLAC'),
-          fileExt: 'flac',
-          action: (score) => loadSoundFont(score).then(() => score.saveAudio('flac')),
-        },
-        {
-          name: i18n('DOWNLOAD_AUDIO')('OGG'),
-          fileExt: 'ogg',
-          action: (score) => loadSoundFont(score).then(() => score.saveAudio('ogg')),
-        },
-      ]
 
       // part selection
       const DEFAULT_PART = -1 // initially select "full score"
@@ -150,7 +121,7 @@ const main = (): void => {
           const partName = checked.alt
 
           const data = new Blob([await d.action(score)])
-          saveAs(data, `${filename} - ${partName}.${d.fileExt}`)
+          saveAs(data, `${fileName} - ${partName}.${d.fileExt}`)
 
           // unlock button
           initBtn()
@@ -161,8 +132,17 @@ const main = (): void => {
     }),
   })
 
+  btnList.add({
+    name: i18n('VIEW_IN_LIBRESCORE')(),
+    action: BtnAction.openUrl(() => getLibreScoreLink(scoreinfo)),
+    tooltip: 'BETA',
+    icon: ICON.LIBRESCORE,
+    lightTheme: true,
+  })
+
+  // eslint-disable-next-line @typescript-eslint/no-floating-promises
   btnList.commit(BtnListMode.InPage)
 }
 
 // eslint-disable-next-line @typescript-eslint/no-floating-promises
-waitForDocumentLoaded().then(main)
+waitForSheetLoaded().then(main)

src/meta.js

@@ -8,9 +8,14 @@
 // @version      %VERSION%
 // @description  download sheet music from musescore.com for free, no login or Musescore Pro required | 免登录、免 Musescore Pro，免费下载 musescore.com 上的曲谱
 // @author       Xmader
+// @icon         https://librescore.org/img/icons/logo.svg
 // @match        https://musescore.com/*/*
+// @match        https://s.musescore.com/*/*
 // @license      MIT
-// @copyright    Copyright (c) 2019-2020 Xmader
+// @copyright    Copyright (c) 2019-2021 Xmader
-// @grant        none
+// @grant        unsafeWindow
+// @grant        GM.registerMenuCommand
+// @grant        GM.addElement
+// @grant        GM.openInTab
 // @run-at       document-start
 // ==/UserScript==

src/mscore.ts

@@ -1,19 +1,27 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
+/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
 import { fetchMscz } from './mscz'
 import { fetchData } from './utils'
+import { ScoreInfo } from './scoreinfo'
+import isNodeJs from 'detect-node'
+import i18n from './i18n'
+import { dependencies as depVers } from '../package.json'
 
-const WEBMSCORE_URL = 'https://cdn.jsdelivr.net/npm/webmscore@0.10/webmscore.js'
+const WEBMSCORE_URL = `https://cdn.jsdelivr.net/npm/webmscore@${depVers.webmscore}/webmscore.js`
 
 // fonts for Chinese characters (CN) and Korean hangul (KR)
 // JP characters are included in the CN font
-const FONT_URLS = ['CN', 'KR'].map(l => `https://cdn.jsdelivr.net/npm/@librescore/fonts/SourceHanSans${l}-Regular.woff2`)
+const FONT_URLS = ['CN', 'KR'].map(l => `https://cdn.jsdelivr.net/npm/@librescore/fonts@${depVers['@librescore/fonts']}/SourceHanSans${l}.min.woff2`)
 
-const SF3_URL = 'https://cdn.jsdelivr.net/npm/@librescore/sf3/FluidR3Mono_GM.sf3'
+const SF3_URL = `https://cdn.jsdelivr.net/npm/@librescore/sf3@${depVers['@librescore/sf3']}/FluidR3Mono_GM.sf3`
 const SOUND_FONT_LOADED = Symbol('SoundFont loaded')
 
 export type WebMscore = import('webmscore').default
+export type WebMscoreConstr = typeof import('webmscore').default
 
-const initMscore = async (w: Window) => {
+const initMscore = async (w: Window): Promise<WebMscoreConstr> => {
+  if (!isNodeJs) { // attached to a page
     if (!w['WebMscore']) {
       // init webmscore (https://github.com/LibreScore/webmscore)
       const script = w.document.createElement('script')
@@ -21,6 +29,10 @@ const initMscore = async (w: Window) => {
       w.document.body.append(script)
       await new Promise(resolve => { script.onload = resolve })
     }
+    return w['WebMscore'] as WebMscoreConstr
+  } else { // nodejs
+    return require('webmscore').default as WebMscoreConstr
+  }
 }
 
 let fonts: Promise<Uint8Array[]> | undefined
@@ -28,17 +40,37 @@ const initFonts = () => {
   // load CJK fonts
   // CJK (East Asian) characters will be rendered as "tofu" if there is no font
   if (!fonts) {
+    if (isNodeJs) {
+      // module.exports.CN = ..., module.exports.KR = ...
+      const FONTS = Object.values(require('@librescore/fonts'))
+
+      const fs = require('fs')
+      fonts = Promise.all(
+        FONTS.map((path: string) => fs.promises.readFile(path) as Promise<Buffer>),
+      )
+    } else {
       fonts = Promise.all(
         FONT_URLS.map(url => fetchData(url)),
       )
     }
   }
+}
 
 export const loadSoundFont = (score: WebMscore): Promise<void> => {
   if (!score[SOUND_FONT_LOADED]) {
     const loadPromise = (async () => {
+      let data: Uint8Array
+      if (isNodeJs) {
+        // module.exports.FluidR3Mono = ...
+        const SF3 = Object.values(require('@librescore/sf3'))[0]
+        const fs = require('fs')
+        data = await fs.promises.readFile(SF3)
+      } else {
+        data = await fetchData(SF3_URL)
+      }
+
       await score.setSoundFont(
-        await fetchData(SF3_URL),
+        data,
       )
     })()
     score[SOUND_FONT_LOADED] = loadPromise
@@ -46,17 +78,60 @@ export const loadSoundFont = (score: WebMscore): Promise<void> => {
   return score[SOUND_FONT_LOADED] as Promise<void>
 }
 
-export const loadMscore = async (w: Window): Promise<WebMscore> => {
+export const loadMscore = async (scoreinfo: ScoreInfo, w?: Window): Promise<WebMscore> => {
   initFonts()
-  await initMscore(w)
+  const WebMscore = await initMscore(w!)
 
-  const WebMscore: typeof import('webmscore').default = w['WebMscore']
   // parse mscz data
   const data = new Uint8Array(
-    new Uint8Array(await fetchMscz()), // copy its ArrayBuffer
+    new Uint8Array(await fetchMscz(scoreinfo)), // copy its ArrayBuffer
   )
   const score = await WebMscore.load('mscz', data, await fonts)
   await score.generateExcerpts()
 
   return score
 }
+
+export interface IndividualDownload {
+  name: string;
+  fileExt: string;
+  action (score: WebMscore): Promise<Uint8Array>;
+}
+
+export const INDV_DOWNLOADS: IndividualDownload[] = [
+  {
+    name: i18n('DOWNLOAD')('PDF'),
+    fileExt: 'pdf',
+    action: (score) => score.savePdf(),
+  },
+  {
+    name: i18n('DOWNLOAD')('MSCZ'),
+    fileExt: 'mscz',
+    action: (score) => score.saveMsc('mscz'),
+  },
+  {
+    name: i18n('DOWNLOAD')('MusicXML'),
+    fileExt: 'mxl',
+    action: (score) => score.saveMxl(),
+  },
+  {
+    name: i18n('DOWNLOAD')('MIDI'),
+    fileExt: 'mid',
+    action: (score) => score.saveMidi(true, true),
+  },
+  {
+    name: i18n('DOWNLOAD_AUDIO')('MP3'),
+    fileExt: 'mp3',
+    action: (score) => loadSoundFont(score).then(() => score.saveAudio('mp3')),
+  },
+  {
+    name: i18n('DOWNLOAD_AUDIO')('FLAC'),
+    fileExt: 'flac',
+    action: (score) => loadSoundFont(score).then(() => score.saveAudio('flac')),
+  },
+  {
+    name: i18n('DOWNLOAD_AUDIO')('OGG'),
+    fileExt: 'ogg',
+    action: (score) => loadSoundFont(score).then(() => score.saveAudio('ogg')),
+  },
+]

src/mscz.ts

@@ -1,28 +1,88 @@
 
-import { saveAs, assertRes } from './utils'
+import { assertRes, getFetch } from './utils'
-import scoreinfo from './scoreinfo'
+import { ScoreInfo } from './scoreinfo'
 
-let msczBufferP: Promise<ArrayBuffer> | undefined
+export const MSCZ_BUF_SYM = Symbol('msczBufferP')
+export const MSCZ_URL_SYM = Symbol('msczUrl')
+export const MAIN_CID_SYM = Symbol('mainCid')
 
-export const fetchMscz = async (): Promise<ArrayBuffer> => {
+const IPNS_KEY = 'QmSdXtvzC8v8iTTZuj5cVmiugnzbR1QATYRcGix4bBsioP'
-  if (!msczBufferP) {
+const IPNS_RS_URL = `https://ipfs.io/api/v0/dag/resolve?arg=/ipns/${IPNS_KEY}`
-    const url = scoreinfo.msczCidUrl
+
-    msczBufferP = (async (): Promise<ArrayBuffer> => {
+export const getMainCid = async (scoreinfo: ScoreInfo, _fetch = getFetch()): Promise<string> => {
-      const r0 = await fetch(url)
+  // look for the persisted msczUrl inside scoreinfo
+  let result = scoreinfo.store.get(MAIN_CID_SYM) as string
+  if (result) {
+    return result
+  }
+
+  const r = await _fetch(IPNS_RS_URL)
+  assertRes(r)
+  const json = await r.json()
+  result = json.Cid['/']
+
+  scoreinfo.store.set(MAIN_CID_SYM, result) // persist to scoreinfo
+  return result
+}
+
+export const loadMsczUrl = async (scoreinfo: ScoreInfo, _fetch = getFetch()): Promise<string> => {
+  // look for the persisted msczUrl inside scoreinfo
+  let result = scoreinfo.store.get(MSCZ_URL_SYM) as string
+  if (result) {
+    return result
+  }
+
+  const mainCid = await getMainCid(scoreinfo, _fetch)
+
+  const url = scoreinfo.getMsczCidUrl(mainCid)
+  const r0 = await _fetch(url)
+  // ipfs-http-gateway specific error
+  // may read further error msg as json
+  if (r0.status !== 500) {
     assertRes(r0)
-      const { Key } = await r0.json()
+  }
-      const r = await fetch(`https://ipfs.infura.io/ipfs/${Key as string}`)
+  const cidRes: { Key: string; Message: string } = await r0.json()
+
+  const cid = cidRes.Key
+  if (!cid) {
+    // read further error msg
+    const err = cidRes.Message
+    if (err.includes('no link named')) { // file not found
+      throw new Error('Score not in dataset')
+    } else {
+      throw new Error(err)
+    }
+  }
+  result = `https://ipfs.infura.io/ipfs/${cid}`
+
+  scoreinfo.store.set(MSCZ_URL_SYM, result) // persist to scoreinfo
+  return result
+}
+
+export const fetchMscz = async (scoreinfo: ScoreInfo, _fetch = getFetch()): Promise<ArrayBuffer> => {
+  let msczBufferP = scoreinfo.store.get(MSCZ_BUF_SYM) as Promise<ArrayBuffer> | undefined
+
+  if (!msczBufferP) {
+    msczBufferP = (async (): Promise<ArrayBuffer> => {
+      const url = await loadMsczUrl(scoreinfo, _fetch)
+      const r = await _fetch(url)
       assertRes(r)
       const data = await r.arrayBuffer()
       return data
     })()
+    scoreinfo.store.set(MSCZ_BUF_SYM, msczBufferP)
   }
 
   return msczBufferP
 }
 
-export const downloadMscz = async (): Promise<void> => {
+// eslint-disable-next-line @typescript-eslint/require-await
-  const data = new Blob([await fetchMscz()])
+export const setMscz = async (scoreinfo: ScoreInfo, buffer: ArrayBuffer): Promise<void> => {
+  scoreinfo.store.set(MSCZ_BUF_SYM, Promise.resolve(buffer))
+}
+
+export const downloadMscz = async (scoreinfo: ScoreInfo, saveAs: typeof import('file-saver').saveAs): Promise<void> => {
+  const data = new Blob([await fetchMscz(scoreinfo)])
   const filename = scoreinfo.fileName
   saveAs(data, `${filename}.mscz`)
 }

src/msdl/cli.js

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+require("musescore-downloader/dist/cli.js")

src/msdl/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "msdl",
+  "version": "%VERSION%",
+  "author": "Xmader",
+  "bin": "cli.js",
+  "description": "Alias for musescore-downloader",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Xmader/musescore-downloader.git"
+  },
+  "bugs": {
+    "url": "https://github.com/Xmader/musescore-downloader/issues"
+  },
+  "homepage": "https://github.com/Xmader/musescore-downloader#readme",
+  "license": "MIT",
+  "dependencies": {
+    "musescore-downloader": "%VERSION%"
+  }
+}

src/npm-data.ts

@@ -0,0 +1,34 @@
+/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
+
+import { name as pkgName, version as pkgVer } from '../package.json'
+import { getFetch } from './utils'
+
+const IS_NPX_REG = /_npx(\/|\\)\d+\1/
+const NPM_REGISTRY = 'https://registry.npmjs.org'
+
+export function isNpx (): boolean {
+  // file is in a npx cache dir
+  // TODO: installed locally?
+  return __dirname.match(IS_NPX_REG) !== null
+}
+
+export function getSelfVer (): string {
+  return pkgVer
+}
+
+export async function getLatestVer (_fetch = getFetch()): Promise<string> {
+  // fetch pkg info from the npm registry
+  const r = await _fetch(`${NPM_REGISTRY}/${pkgName}`)
+  const json = await r.json()
+  return json['dist-tags'].latest as string
+}
+
+export async function getVerInfo () {
+  const installed = getSelfVer()
+  const latest = await getLatestVer()
+  return {
+    installed,
+    latest,
+    isLatest: installed === latest,
+  }
+}

src/pdf.ts

@@ -1,14 +1,14 @@
 
 import { PDFWorkerHelper } from './worker-helper'
 import { getFileUrl } from './file'
-import { saveAs } from './utils'
+import FileSaver from 'file-saver'
-import scoreinfo from './scoreinfo'
+import { ScoreInfo, SheetInfo } from './scoreinfo'
 
 let pdfBlob: Blob
 
 const _downloadPDF = async (imgURLs: string[], imgType: 'svg' | 'png', name = ''): Promise<void> => {
   if (pdfBlob) {
-    return saveAs(pdfBlob, `${name}.pdf`)
+    return FileSaver.saveAs(pdfBlob, `${name}.pdf`)
   }
 
   const cachedImg = document.querySelector('img[src*=score_]') as HTMLImageElement
@@ -20,18 +20,18 @@ const _downloadPDF = async (imgURLs: string[], imgType: 'svg' | 'png', name = ''
 
   pdfBlob = new Blob([pdfArrayBuffer])
 
-  saveAs(pdfBlob, `${name}.pdf`)
+  FileSaver.saveAs(pdfBlob, `${name}.pdf`)
 }
 
-export const downloadPDF = async (): Promise<void> => {
+export const downloadPDF = async (scoreinfo: ScoreInfo, sheet: SheetInfo): Promise<void> => {
-  const imgType = scoreinfo.sheetImgType
+  const imgType = sheet.imgType
-  const pageCount = scoreinfo.pageCount
+  const pageCount = sheet.pageCount
 
   const rs = Array.from({ length: pageCount }).map((_, i) => {
     if (i === 0) { // The url to the first page is static. We don't need to use API to obtain it.
-      return scoreinfo.baseUrl + `score_${i}.${imgType}`
+      return sheet.thumbnailUrl
     } else { // obtain image urls using the API
-      return getFileUrl('img', i)
+      return getFileUrl(scoreinfo.id, 'img', i)
     }
   })
   const sheetImgURLs = await Promise.all(rs)

src/scoreinfo.ts

@@ -1,99 +1,154 @@
-/* eslint-disable @typescript-eslint/no-unsafe-return */
 
-import { console } from './utils'
+import { getFetch, escapeFilename, assertRes } from './utils'
+import { getMainCid } from './mscz'
 
-// run at document-start
+export abstract class ScoreInfo {
-export const ugappJsStore: Record<string, any> | null = (() => {
+  private readonly RADIX = 20;
-  try {
+  private readonly INDEX_RADIX = 32;
-    const l = document.body.children as HTMLCollectionOf<HTMLElement>
+
-    const el = [...l].find(e => Object.keys(e.dataset).length > 0) as HTMLDivElement
+  abstract id: number;
-    const json = Object.values(el.dataset)[0] as string
+  abstract title: string;
-    return JSON.parse(json)
+
-  } catch (err) {
+  public store = new Map<symbol, any>();
-    console.error(err)
+
-    return null
+  get idLastDigit (): number {
+    return (+this.id) % this.RADIX
   }
-})()
 
-const IPNS_KEY = 'QmSdXtvzC8v8iTTZuj5cVmiugnzbR1QATYRcGix4bBsioP'
+  get fileName (): string {
-const RADIX = 20
+    return escapeFilename(this.title)
+  }
 
-export const scoreinfo = {
+  public getMsczIpfsRef (mainCid: string): string {
+    return `/ipfs/${mainCid}/${this.idLastDigit}/${this.id}.mscz`
+  }
 
-  get playerdata (): any {
+  public getMsczCidUrl (mainCid: string): string {
-    // @ts-ignore
+    return `https://ipfs.infura.io:5001/api/v0/block/stat?arg=${this.getMsczIpfsRef(mainCid)}`
-    return ugappJsStore.store.page.data.score
+  }
-  },
 
-  get id (this: typeof scoreinfo): number {
+  public getScorepackRef (mainCid: string): string {
-    try {
+    return `/ipfs/${mainCid}/index/${(+this.id) % this.INDEX_RADIX}/${this.id}`
-      return this.playerdata.id
+  }
-    } catch {
+}
-      const el = document.querySelector("meta[property='al:ios:url']") as HTMLMetaElement
+
+export class ScoreInfoObj extends ScoreInfo {
+  constructor (public id: number = 0, public title: string = '') { super() }
+}
+
+export class ScoreInfoInPage extends ScoreInfo {
+  constructor (private document: Document) { super() }
+
+  get id (): number {
+    const el = this.document.querySelector("meta[property='al:ios:url']") as HTMLMetaElement
     const m = el.content.match(/(\d+)$/) as RegExpMatchArray
     return +m[1]
   }
-  },
 
-  get idLastDigit (this: typeof scoreinfo): number {
+  get title (): string {
-    return (+this.id) % RADIX
+    const el = this.document.querySelector("meta[property='og:title']") as HTMLMetaElement
-  },
-
-  get title (this: typeof scoreinfo): string {
-    try {
-      return this.playerdata.title
-    } catch {
-      const el = document.querySelector("meta[property='og:title']") as HTMLMetaElement
     return el.content
   }
-  },
 
-  get fileName (this: typeof scoreinfo): string {
+  get baseUrl (): string {
-    return this.title.replace(/[\s<>:{}"/\\|?*~.\0\cA-\cZ]+/g, '_')
+    const el = this.document.querySelector("meta[property='og:image']") as HTMLMetaElement
-  },
+    const m = el.content.match(/^(.+\/)score_/) as RegExpMatchArray
-
+    return m[1]
-  get pageCount (this: typeof scoreinfo): number {
-    try {
-      return this.playerdata.pages_count
-    } catch {
-      return document.querySelectorAll('.gXB83').length
   }
-  },
-
-  get baseUrl (this: typeof scoreinfo): string {
-    let thumbnailUrl: string
-    try {
-      thumbnailUrl = this.playerdata.thumbnails.original
-    } catch {
-      const el = document.querySelector("meta[property='og:image']") as HTMLMetaElement
-      thumbnailUrl = el.content
 }
 
-    const { origin, pathname } = new URL(thumbnailUrl)
+export class ScoreInfoHtml extends ScoreInfo {
-    // remove the last part
+  private readonly ID_REG = /<meta property="al:ios:url" content="musescore:\/\/score\/(\d+)">/
-    return origin + pathname.split('/').slice(0, -1).join('/') + '/'
+  private readonly TITLE_REG = /<meta property="og:title" content="(.*)">/
-  },
+  private readonly BASEURL_REG = /<meta property="og:image" content="(.+\/)score_.*">/
 
-  get msczIpfsRef (this: typeof scoreinfo): string {
+  constructor (private html: string) { super() }
-    return `/ipns/${IPNS_KEY}/${this.idLastDigit}/${this.id}.mscz`
-  },
 
-  get msczCidUrl (this: typeof scoreinfo): string {
+  get id (): number {
-    return `https://ipfs.infura.io:5001/api/v0/block/stat?arg=${this.msczIpfsRef}`
+    const m = this.html.match(this.ID_REG)
-  },
+    if (!m) return 0
+    return +m[1]
+  }
 
-  get sheetImgType (): 'svg' | 'png' {
+  get title (): string {
-    try {
+    const m = this.html.match(this.TITLE_REG)
-      const imgE = document.querySelector('img[src*=score_]') as HTMLImageElement
+    if (!m) return ''
-      const { pathname } = new URL(imgE.src)
+    return m[1]
-      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+  }
-      const imgtype = pathname.match(/\.(\w+)$/)![1]
+
+  get baseUrl (): string {
+    const m = this.html.match(this.BASEURL_REG)
+    if (!m) return ''
+    return m[1]
+  }
+
+  static async request (url: string, _fetch = getFetch()): Promise<ScoreInfoHtml> {
+    const r = await _fetch(url)
+    if (!r.ok) return new ScoreInfoHtml('')
+
+    const html = await r.text()
+    return new ScoreInfoHtml(html)
+  }
+}
+
+export abstract class SheetInfo {
+  abstract pageCount: number;
+  abstract thumbnailUrl: string;
+
+  get imgType (): 'svg' | 'png' {
+    const thumbnail = this.thumbnailUrl
+    const imgtype = thumbnail.match(/score_0\.(\w+)/)![1]
     return imgtype as 'svg' | 'png'
-    } catch (_) {
-      // return null
-      return 'svg'
   }
-  },
 }
 
-export default scoreinfo
+export class SheetInfoInPage extends SheetInfo {
+  constructor (private document: Document) { super() }
+
+  private get sheet0Img (): HTMLImageElement | null {
+    return this.document.querySelector('img[src*=score_]')
+  }
+
+  get pageCount (): number {
+    const sheet0Div = this.sheet0Img?.parentElement
+    if (!sheet0Div) {
+      throw new Error('no sheet images found')
+    }
+    return this.document.getElementsByClassName(sheet0Div.className).length
+  }
+
+  get thumbnailUrl (): string {
+    // url to the image of the first page
+    const el = this.document.querySelector<HTMLLinkElement>('link[as=image]')
+    const url = (el?.href || this.sheet0Img?.src) as string
+    return url.split('@')[0]
+  }
+}
+
+export const getActualId = async (scoreinfo: ScoreInfoInPage | ScoreInfoHtml, _fetch = getFetch()): Promise<number> => {
+  if (scoreinfo.id <= 1000000000000) {
+    // actual id already
+    return scoreinfo.id
+  }
+
+  const mainCid = await getMainCid(scoreinfo, _fetch)
+  const ref = `${mainCid}/sid2id/${scoreinfo.id}`
+  const url = `https://ipfs.infura.io:5001/api/v0/dag/get?arg=${ref}`
+
+  const r0 = await _fetch(url)
+  if (r0.status !== 500) {
+    assertRes(r0)
+  }
+  const res: { Message: string } | number = await r0.json()
+  if (typeof res !== 'number') {
+    // read further error msg
+    throw new Error(res.Message)
+  }
+
+  // assign the actual id back to scoreinfo
+  Object.defineProperty(scoreinfo, 'id', {
+    get () { return res },
+  })
+
+  return res
+}

src/utils.ts

@@ -1,7 +1,12 @@
 
-import FileSaver from 'file-saver/dist/FileSaver.js'
+import isNodeJs from 'detect-node'
+import { isGmAvailable, _GM } from './gm'
 
-export const saveAs: typeof import('file-saver').saveAs = FileSaver.saveAs
+export const DISCORD_URL = 'https://discord.gg/gSsTUvJmD8'
+
+export const escapeFilename = (s: string): string => {
+  return s.replace(/[\s<>:{}"/\\|?*~.\0\cA-\cZ]+/g, '_')
+}
 
 export const getIndexPath = (id: number): string => {
   const idStr = String(id)
@@ -13,6 +18,25 @@ export const getIndexPath = (id: number): string => {
   return indexN.join('/')
 }
 
+const NODE_FETCH_HEADERS = {
+  'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0',
+  'Accept-Language': 'en-US,en;q=0.8',
+}
+
+export const getFetch = (): typeof fetch => {
+  if (!isNodeJs) {
+    return fetch
+  } else {
+    // eslint-disable-next-line @typescript-eslint/no-var-requires
+    const nodeFetch = require('node-fetch')
+    return (input: RequestInfo, init?: RequestInit) => {
+      init = Object.assign({ headers: NODE_FETCH_HEADERS }, init)
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-return
+      return nodeFetch(input, init)
+    }
+  }
+}
+
 export const fetchData = async (url: string, init?: RequestInit): Promise<Uint8Array> => {
   const r = await fetch(url, init)
   const data = await r.arrayBuffer()
@@ -36,19 +60,68 @@ export const useTimeout = async <T> (promise: T | Promise<T>, ms: number): Promi
   })
 }
 
-export const getSandboxWindow = (): Window => {
+export const getSandboxWindowAsync = async (targetEl: Element | undefined = undefined): Promise<Window> => {
-  const iframe = document.createElement('iframe')
+  if (typeof document === 'undefined') return {} as any as Window
+
+  if (isGmAvailable('addElement')) {
+    // create iframe using GM_addElement API
+    const iframe = await _GM.addElement('iframe', {})
     iframe.style.display = 'none'
-  document.body.append(iframe)
+    return iframe.contentWindow as Window
+  }
+
+  if (!targetEl) {
+    return new Promise((resolve) => {
+      // You need ads in your pages, right?
+      const observer = new MutationObserver(() => {
+        for (let i = 0; i < window.frames.length; i++) {
+          // find iframe windows created by ads
+          const frame = frames[i]
+          try {
+            const href = frame.location.href
+            if (href === location.href || href === 'about:blank') {
+              resolve(frame)
+              return
+            }
+          } catch { }
+        }
+      })
+      observer.observe(document.body, { subtree: true, childList: true })
+    })
+  }
+
+  return new Promise((resolve) => {
+    const eventName = 'onmousemove'
+    const id = Math.random().toString()
+
+    targetEl[id] = (iframe: HTMLIFrameElement) => {
+      delete targetEl[id]
+      targetEl.removeAttribute(eventName)
+
+      iframe.style.display = 'none'
+      targetEl.append(iframe)
       const w = iframe.contentWindow
-  return w as Window
+      resolve(w as Window)
     }
 
-export const windowOpen: Window['open'] = (...args): Window | null => {
+    targetEl.setAttribute(eventName, `this['${id}'](document.createElement('iframe'))`)
-  return getSandboxWindow().open(...args)
+  })
 }
 
-export const console: Console = getSandboxWindow()['console']
+export const getUnsafeWindow = (): Window => {
+  // eslint-disable-next-line no-eval
+  return window.eval('window') as Window
+}
+
+export const console: Console = (window || global).console // Object.is(window.console, unsafeWindow.console) == false
+
+export const windowOpenAsync = (targetEl: Element | undefined, ...args: Parameters<Window['open']>): Promise<Window | null> => {
+  return getSandboxWindowAsync(targetEl).then(w => w.open(...args))
+}
+
+export const attachShadow = (el: Element): ShadowRoot => {
+  return Element.prototype.attachShadow.call(el, { mode: 'closed' }) as ShadowRoot
+}
 
 export const waitForDocumentLoaded = (): Promise<void> => {
   if (document.readyState !== 'complete') {
@@ -65,3 +138,23 @@ export const waitForDocumentLoaded = (): Promise<void> => {
     return Promise.resolve()
   }
 }
+
+/**
+ * Run script before the page is fully loaded
+ */
+export const waitForSheetLoaded = (): Promise<void> => {
+  if (document.readyState !== 'complete') {
+    return new Promise(resolve => {
+      const observer = new MutationObserver(() => {
+        const img = document.querySelector('img')
+        if (img) {
+          resolve()
+          observer.disconnect()
+        }
+      })
+      observer.observe(document, { childList: true, subtree: true })
+    })
+  } else {
+    return Promise.resolve()
+  }
+}

src/webpack-hook.ts

@@ -2,7 +2,7 @@
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
 import { hookNative } from './anti-detection'
-import { console } from './utils'
+import { console, getUnsafeWindow } from './utils'
 
 const CHUNK_PUSH_FN = /^function [^r]\(\w\){/
 
@@ -86,9 +86,10 @@ export const [webpackGlobalOverride, onPackLoad] = (() => {
   }
 
   // hook `webpackJsonpmusescore.push` as soon as `webpackJsonpmusescore` is available
-  let jsonp = window['webpackJsonpmusescore']
+  const _w = getUnsafeWindow()
+  let jsonp = _w['webpackJsonpmusescore']
   let hooked = false
-  Object.defineProperty(window, 'webpackJsonpmusescore', {
+  Object.defineProperty(_w, 'webpackJsonpmusescore', {
     get () { return jsonp },
     set (v: WebpackJson) {
       jsonp = v

src/worker-helper.ts

@@ -4,7 +4,7 @@ import { PDFWorker } from '../dist/cache/worker'
 
 const scriptUrlFromFunction = (fn: () => any): string => {
   const blob = new Blob(['(' + fn.toString() + ')()'], { type: 'application/javascript' })
-  return URL.createObjectURL(blob)
+  return window.URL.createObjectURL(blob)
 }
 
 export class PDFWorkerHelper extends Worker {

src/worker.ts

@@ -6,7 +6,9 @@ import SVGtoPDF from 'svg-to-pdfkit'
 
 type ImgType = 'svg' | 'png'
 
-const getDataURL = (blob: Blob): Promise<string> => {
+type DataResultType = 'dataUrl' | 'text'
+
+const readData = (blob: Blob, type: DataResultType): Promise<string> => {
   return new Promise((resolve, reject) => {
     const reader = new FileReader()
     reader.onload = (): void => {
@@ -14,22 +16,22 @@ const getDataURL = (blob: Blob): Promise<string> => {
       resolve(result as string)
     }
     reader.onerror = reject
+    if (type === 'dataUrl') {
       reader.readAsDataURL(blob)
+    } else {
+      reader.readAsText(blob)
+    }
   })
 }
 
-const fetchDataURL = async (imgUrl: string): Promise<string> => {
+const fetchBlob = async (imgUrl: string): Promise<Blob> => {
-  const r = await fetch(imgUrl)
+  const r = await fetch(imgUrl, {
-  const blob = await r.blob()
+    cache: 'no-cache',
-  return getDataURL(blob)
+  })
+  return r.blob()
 }
 
-const fetchText = async (imgUrl: string): Promise<string> => {
+const generatePDF = async (imgBlobs: Blob[], imgType: ImgType, width: number, height: number): Promise<ArrayBuffer> => {
-  const r = await fetch(imgUrl)
-  return r.text()
-}
-
-const generatePDF = async (imgURLs: string[], imgType: ImgType, width: number, height: number): Promise<ArrayBuffer> => {
   // @ts-ignore
   const pdf = new (PDFDocument as typeof import('pdfkit'))({
     // compress: true,
@@ -40,7 +42,7 @@ const generatePDF = async (imgURLs: string[], imgType: ImgType, width: number, h
   })
 
   if (imgType === 'png') {
-    const imgDataUrlList: string[] = await Promise.all(imgURLs.map(fetchDataURL))
+    const imgDataUrlList: string[] = await Promise.all(imgBlobs.map(b => readData(b, 'dataUrl')))
 
     imgDataUrlList.forEach((data) => {
       pdf.addPage()
@@ -50,7 +52,7 @@ const generatePDF = async (imgURLs: string[], imgType: ImgType, width: number, h
       })
     })
   } else { // imgType == "svg"
-    const svgList = await Promise.all(imgURLs.map(fetchText))
+    const svgList = await Promise.all(imgBlobs.map(b => readData(b, 'text')))
 
     svgList.forEach((svg) => {
       pdf.addPage()
@@ -70,14 +72,16 @@ export type PDFWorkerMessage = [string[], ImgType, number, number];
 
 onmessage = async (e): Promise<void> => {
   const [
-    imgURLs,
+    imgUrls,
     imgType,
     width,
     height,
   ] = e.data as PDFWorkerMessage
 
+  const imgBlobs = await Promise.all(imgUrls.map(url => fetchBlob(url)))
+
   const pdfBuf = await generatePDF(
-    imgURLs,
+    imgBlobs,
     imgType,
     width,
     height,

src/wrapper.js

@@ -0,0 +1,52 @@
+/* eslint-disable */
+const w = typeof unsafeWindow == 'object' ? unsafeWindow : window;
+
+// GM APIs glue
+const _GM = typeof GM == 'object' ? GM : undefined;
+const gmId = '' + Math.random();
+w[gmId] = _GM;
+
+if (_GM && _GM.registerMenuCommand && _GM.openInTab) {
+  // add buttons to the userscript manager menu
+  _GM.registerMenuCommand(
+    `** Version: ${_GM.info.script.version} **`,
+    () => _GM.openInTab("https://github.com/Xmader/musescore-downloader/releases", { active: true })
+  )
+
+  _GM.registerMenuCommand(
+    '** Source Code **',
+    () => _GM.openInTab(_GM.info.script.homepage, { active: true })
+  )
+
+  _GM.registerMenuCommand(
+    '** Discord **',
+    () => _GM.openInTab("https://discord.gg/DKu7cUZ4XQ", { active: true })
+  )
+}
+
+function getRandL () {
+  return String.fromCharCode(97 + Math.floor(Math.random() * 26))
+}
+
+// script loader
+new Promise(resolve => {
+  const id = '' + Math.random();
+  w[id] = resolve;
+
+  const stackN = 9
+  let loaderIntro = ''
+  for (let i = 0; i < stackN; i++) {
+    loaderIntro += `(function ${getRandL()}(){`
+  }
+  const loaderOutro = '})()'.repeat(stackN)
+  const mockUrl = "https://c.amazon-adsystem.com/aax2/apstag.js"
+
+  Function(`${loaderIntro}const d=new Image();window['${id}'](d);delete window['${id}'];document.body.prepend(d)${loaderOutro}//# sourceURL=${mockUrl}`)()
+}).then(d => {
+  d.style.display = 'none';
+  d.src = 'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==';
+  d.once = false;
+  d.setAttribute('onload', `if(this.once)return;this.once=true;this.remove();const GM=window['${gmId}'];delete window['${gmId}'];(` + function a () {
+  /** script code here */
+
+}.toString() + ')()')})