58 lines
1.4 KiB
TypeScript
58 lines
1.4 KiB
TypeScript
/* eslint-disable @typescript-eslint/no-unsafe-return */
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import scoreinfo from './scoreinfo'
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const AUTH_MODULE_ID = 'FNf8'
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type FileType = 'img' | 'mp3' | 'midi'
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const getApiUrl = (type: FileType, index: number): string => {
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// proxy
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return `https://musescore.now.sh/api/jmuse?id=${scoreinfo.id}&type=${type}&index=${index}`
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}
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/**
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* Retrieve (webpack_require) a module from the page's webpack package
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*
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* I know this is super hacky.
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*/
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const webpackHook = (moduleId: string, globalWebpackJson = window['webpackJsonpmusescore']) => {
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const pack = globalWebpackJson.find(x => x[1][moduleId])
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const t = Object.assign((id: string) => {
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const r: any = {}
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pack[1][id](r, r, t)
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if (r.exports) return r.exports
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return r
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}, {
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d (exp, name, fn) {
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return Object.defineProperty(exp, name, { value: fn })
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},
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n (e) {
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return () => e
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},
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})
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return t(moduleId)
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}
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const getApiAuth = (type: FileType, index: number): string => {
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const authModule = webpackHook(AUTH_MODULE_ID)
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const fn: (id: number, type: string, index: number) => string = authModule.a()
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return fn(scoreinfo.id, type, index)
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}
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export const getFileUrl = async (type: FileType, index = 0): Promise<string> => {
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const url = getApiUrl(type, index)
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const auth = getApiAuth(type, index)
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const r = await fetch(url, {
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headers: {
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Authorization: auth,
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},
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})
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const { info } = await r.json()
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return info.url as string
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}
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