musescore-downloader/src/scoreinfo.ts

69 lines
1.7 KiB
TypeScript

/* eslint-disable @typescript-eslint/no-unsafe-return */
const IPNS_KEY = 'QmSdXtvzC8v8iTTZuj5cVmiugnzbR1QATYRcGix4bBsioP'
const RADIX = 20
export abstract class ScoreInfo {
abstract id: number;
abstract title: string;
public store = new Map<symbol, any>();
get idLastDigit (): number {
return (+this.id) % RADIX
}
get fileName (): string {
return this.title.replace(/[\s<>:{}"/\\|?*~.\0\cA-\cZ]+/g, '_')
}
get msczIpfsRef (): string {
return `/ipns/${IPNS_KEY}/${this.idLastDigit}/${this.id}.mscz`
}
get msczCidUrl (): string {
return `https://ipfs.infura.io:5001/api/v0/block/stat?arg=${this.msczIpfsRef}`
}
}
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+)$/) as RegExpMatchArray
return +m[1]
}
get title (): string {
const el = this.document.querySelector("meta[property='og:title']") as HTMLMetaElement
return el.content
}
}
export abstract class SheetInfo {
abstract pageCount: number;
abstract thumbnailUrl: string;
get imgType (): 'svg' | 'png' {
const thumbnail = this.thumbnailUrl
const imgtype = thumbnail.match(/\.(\w+)$/)![1]
return imgtype as 'svg' | 'png'
}
}
export class SheetInfoInPage extends SheetInfo {
constructor (private document: Document) { super() }
get pageCount (): number {
return this.document.querySelectorAll('.gXB83').length
}
get thumbnailUrl (): string {
// url to the image of the first page
const el = this.document.querySelector('link[as=image]') as HTMLLinkElement
const url = el.href
return url.split('@')[0]
}
}