33 lines
856 B
TypeScript
33 lines
856 B
TypeScript
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import scoreinfo from './scoreinfo'
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import md5 from 'md5'
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const MAGIC = String(4 * 11 * 1607 * 2767) // '195649036' // I don't know what this is
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const AUTH_LEN = 4
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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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const getApiAuth = (type: FileType, index: number): string => {
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const str = String(scoreinfo.id) + type + String(index) + MAGIC
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return md5(str).slice(0, AUTH_LEN)
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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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