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/* 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 { dependencies as depVers } from "../package.json";
import isNodeJs from "detect-node";
import i18nextInit, { i18next } from "./i18n/index";
import { InputFileFormat } from "webmscore/schemas";
(async () => {
await i18nextInit;
})();
const WEBMSCORE_URL = `https://cdn.jsdelivr.net/npm/webmscore@${depVers.webmscore}/webmscore.js`;
// fonts for Chinese characters (CN) and Korean hangul (KR)
// JP characters are included in the CN font
const FONT_URLS = ["CN", "KR"].map(
(l) =>
`https://cdn.jsdelivr.net/npm/@librescore/fonts@${depVers["@librescore/fonts"]}/SourceHanSans${l}.min.woff2`
);
const SF3_URL = `https://cdn.jsdelivr.net/npm/@librescore/sf3@${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): Promise<WebMscoreConstr> => {
if (!isNodeJs) {
// attached to a page
if (!w["WebMscore"]) {
// init webmscore (https://github.com/LibreScore/webmscore)
const script = w.document.createElement("script");
script.src = WEBMSCORE_URL;
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;
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(data);
})();
score[SOUND_FONT_LOADED] = loadPromise;
}
return score[SOUND_FONT_LOADED] as Promise<void>;
};
export const loadMscore = async (
fileExt: InputFileFormat,
scoreinfo: ScoreInfo,
w?: Window
): Promise<WebMscore> => {
initFonts();
const WebMscore = await initMscore(w!);
// parse mscz data
const data = new Uint8Array(
new Uint8Array(await fetchMscz(scoreinfo)) // copy its ArrayBuffer
);
const score = await WebMscore.load(fileExt, 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: i18next.t("download", { fileType: "PDF" }),
fileExt: "pdf",
action: (score) => score.savePdf(),
},
{
name: i18next.t("download", { fileType: "MSCZ" }),
fileExt: "mscz",
action: (score) => score.saveMsc("mscz"),
},
{
name: i18next.t("download", { fileType: "MSCX" }),
fileExt: "mscx",
action: (score) => score.saveMsc("mscx"),
},
{
name: i18next.t("download", { fileType: "MusicXML" }),
fileExt: "mxl",
action: (score) => score.saveMxl(),
},
{
name: i18next.t("download", { fileType: "MIDI" }),
fileExt: "mid",
action: (score) => score.saveMidi(true, true),
},
{
name: i18next.t("download_audio", { fileType: "MP3" }),
fileExt: "mp3",
action: (score) =>
loadSoundFont(score).then(() => score.saveAudio("mp3")),
},
{
name: i18next.t("download_audio", { fileType: "FLAC" }),
fileExt: "flac",
action: (score) =>
loadSoundFont(score).then(() => score.saveAudio("flac")),
},
{
name: i18next.t("download_audio", { fileType: "OGG" }),
fileExt: "ogg",
action: (score) =>
loadSoundFont(score).then(() => score.saveAudio("ogg")),
},
];
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