From 7e4b5e2c15b4c12793d0e2173c06d78eaaa2e8b9 Mon Sep 17 00:00:00 2001
From: Xmader <xmader@outlook.com>
Date: Fri, 29 Nov 2019 18:09:03 -0500
Subject: [PATCH] v0.1.7 - fix - #1

---
 dist/main.js | 91 +++++++++++++++++++++++++++++++---------------------
 package.json |  2 +-
 2 files changed, 56 insertions(+), 37 deletions(-)

diff --git a/dist/main.js b/dist/main.js
index 3973ec1..2b5da35 100644
--- a/dist/main.js
+++ b/dist/main.js
@@ -3,7 +3,7 @@
 // @namespace    https://www.xmader.com/
 // @homepageURL  https://github.com/Xmader/musescore-downloader/
 // @supportURL   https://github.com/Xmader/musescore-downloader/issues
-// @version      0.1.6
+// @version      0.1.7
 // @description  免登录、免 Musescore Pro，下载 musescore.com 上的曲谱
 // @author       Xmader
 // @match        https://musescore.com/*/*
@@ -20,48 +20,67 @@
     const getIndexPath = (id) => {
         const idStr = String(id);
         // 获取最后三位，倒序排列
+        // x, y, z are the reversed last digits of the score id. Example: id 123456789, x = 9, y = 8, z = 7
+        // https://developers.musescore.com/#/file-urls
         // "5449062" -> ["2", "6", "0"]
         const indexN = idStr.split("").reverse().slice(0, 3);
         return indexN.join("/");
     };
-
-    // @ts-ignore
-    const scorePlayer = window.UGAPP.store.jmuse_settings.score_player;
-    const { id, vid } = scorePlayer.json;
-    const baseURL = scorePlayer.urls.image_path;
-    const scoreHexId = baseURL.split("/").filter(Boolean).reverse()[0];
-    const msczURL = `https://musescore.com/static/musescore/scoredata/score/${getIndexPath(id)}/${id}/score_${vid}_${scoreHexId}.mscz`;
-    const pdfURL = baseURL + "score_full.pdf";
-    const mxlURL = baseURL + "score.mxl";
-    const { midi: midiURL, mp3: mp3URL } = scorePlayer.urls;
-    const btnsDiv = document.querySelector(".score-right .buttons-wrapper") || document.querySelectorAll("aside section > div")[3];
-    const downloadBtn = btnsDiv.querySelector("button, .button");
-    downloadBtn.onclick = null;
-    const downloadURLs = {
-        "Musescore": msczURL,
-        "PDF": pdfURL,
-        "MusicXML": mxlURL,
-        "MIDI": midiURL,
-        "MP3": mp3URL,
-    };
-    const newDownloadBtns = Object.keys(downloadURLs).map((name) => {
-        const url = downloadURLs[name];
-        const btn = downloadBtn.cloneNode(true);
-        btn.onclick = () => {
-            window.open(url);
-        };
-        if (btn.nodeName.toLowerCase() == "button") {
-            btn.setAttribute("style", "width: 205px !important");
+    const waitForDocumentLoaded = () => {
+        if (document.readyState !== "complete") {
+            return new Promise(resolve => {
+                document.addEventListener("readystatechange", () => {
+                    if (document.readyState == "complete") {
+                        resolve();
+                    }
+                }, { once: true });
+            });
         }
         else {
-            btn.dataset.target = "";
+            return Promise.resolve();
         }
-        const span = [...btn.childNodes].find((x) => {
-            return x.textContent.includes("Download");
+    };
+
+    const main = () => {
+        // @ts-ignore
+        const scorePlayer = window.UGAPP.store.jmuse_settings.score_player;
+        const { id, vid } = scorePlayer.json;
+        const baseURL = scorePlayer.urls.image_path;
+        const scoreHexId = baseURL.split("/").filter(Boolean).reverse()[0];
+        const msczURL = `https://musescore.com/static/musescore/scoredata/score/${getIndexPath(id)}/${id}/score_${vid}_${scoreHexId}.mscz`;
+        const pdfURL = baseURL + "score_full.pdf";
+        const mxlURL = baseURL + "score.mxl";
+        const { midi: midiURL, mp3: mp3URL } = scorePlayer.urls;
+        const btnsDiv = document.querySelector(".score-right .buttons-wrapper") || document.querySelectorAll("aside section > div")[3];
+        const downloadBtn = btnsDiv.querySelector("button, .button");
+        downloadBtn.onclick = null;
+        const downloadURLs = {
+            "Musescore": msczURL,
+            "PDF": pdfURL,
+            "MusicXML": mxlURL,
+            "MIDI": midiURL,
+            "MP3": mp3URL,
+        };
+        const newDownloadBtns = Object.keys(downloadURLs).map((name) => {
+            const url = downloadURLs[name];
+            const btn = downloadBtn.cloneNode(true);
+            btn.onclick = () => {
+                window.open(url);
+            };
+            if (btn.nodeName.toLowerCase() == "button") {
+                btn.setAttribute("style", "width: 205px !important");
+            }
+            else {
+                btn.dataset.target = "";
+            }
+            const span = [...btn.childNodes].find((x) => {
+                return x.textContent.includes("Download");
+            });
+            span.textContent = `Download ${name}`;
+            return btn;
         });
-        span.textContent = `Download ${name}`;
-        return btn;
-    });
-    downloadBtn.replaceWith(...newDownloadBtns);
+        downloadBtn.replaceWith(...newDownloadBtns);
+    };
+    waitForDocumentLoaded().then(main);
 
 }());
diff --git a/package.json b/package.json
index 08fff8d..6d2277f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "musescore-downloader",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "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",
   "repository": {