import { getFetch, escapeFilename } from './utils' export abstract class ScoreInfo { private readonly RADIX = 20; abstract id: number; abstract title: string; public store = new Map(); get idLastDigit (): number { return (+this.id) % this.RADIX } get fileName (): string { return escapeFilename(this.title) } public getMsczIpfsRef (mainCid: string): string { return `/ipfs/${mainCid}/${this.idLastDigit}/${this.id}.mscz` } public getMsczCidUrl (mainCid: string): string { return `https://ipfs.infura.io:5001/api/v0/block/stat?arg=${this.getMsczIpfsRef(mainCid)}` } } export class ScoreInfoObj extends ScoreInfo { constructor (public id: number, public title: string) { super() } } 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 class ScoreInfoHtml extends ScoreInfo { private readonly ID_REG = // private readonly TITLE_REG = // constructor (private html: string) { super() } get id (): number { const m = this.html.match(this.ID_REG) if (!m) return 0 return +m[1] } get title (): string { const m = this.html.match(this.TITLE_REG) if (!m) return '' return m[1] } static async request (url: string, _fetch = getFetch()): Promise { const r = await _fetch(url) if (!r.ok) return new ScoreInfoHtml('') const html = await r.text() return new ScoreInfoHtml(html) } } export abstract class SheetInfo { abstract pageCount: number; abstract thumbnailUrl: string; get imgType (): 'svg' | 'png' { const thumbnail = this.thumbnailUrl const imgtype = thumbnail.match(/score_0\.(\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] } }