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refactor: scoreinfo mscz url

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This commit is contained in:
Xmader 2020-11-24 04:03:06 -05:00
parent 141dac44ac
commit 92619ab3f7
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GPG key ID: A20B97FB9EB730E4
2 changed files with 15 additions and 10 deletions
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8
src/mscz.ts
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@ -4,16 +4,16 @@ import { ScoreInfo } from './scoreinfo'
const MSCZ_BUF_SYM = Symbol('msczBufferP')
export const fetchMscz = async (scoreinfo: ScoreInfo): Promise<ArrayBuffer> => {
export const fetchMscz = async (scoreinfo: ScoreInfo, _fetch = fetch): Promise<ArrayBuffer> => {
let msczBufferP = scoreinfo.store.get(MSCZ_BUF_SYM) as Promise<ArrayBuffer> | undefined
if (!msczBufferP) {
const url = scoreinfo.msczCidUrl
msczBufferP = (async (): Promise<ArrayBuffer> => {
const r0 = await fetch(url)
const r0 = await _fetch(url)
assertRes(r0)
const { Key } = await r0.json()
const r = await fetch(`https://ipfs.infura.io/ipfs/${Key as string}`)
const cidRes = await r0.json()
const r = await _fetch(scoreinfo.getMsczUrl(cidRes))
assertRes(r)
const data = await r.arrayBuffer()
return data

17
src/scoreinfo.ts
View file

@ -1,16 +1,15 @@
/* eslint-disable @typescript-eslint/no-unsafe-return */
const IPNS_KEY = 'QmSdXtvzC8v8iTTZuj5cVmiugnzbR1QATYRcGix4bBsioP'
const RADIX = 20
export abstract class ScoreInfo {
private readonly IPNS_KEY = 'QmSdXtvzC8v8iTTZuj5cVmiugnzbR1QATYRcGix4bBsioP';
private readonly RADIX = 20;
abstract id: number;
abstract title: string;
public store = new Map<symbol, any>();
get idLastDigit (): number {
return (+this.id) % RADIX
return (+this.id) % this.RADIX
}
get fileName (): string {
@ -18,12 +17,18 @@ export abstract class ScoreInfo {
}
get msczIpfsRef (): string {
return `/ipns/${IPNS_KEY}/${this.idLastDigit}/${this.id}.mscz`
return `/ipns/${this.IPNS_KEY}/${this.idLastDigit}/${this.id}.mscz`
}
get msczCidUrl (): string {
return `https://ipfs.infura.io:5001/api/v0/block/stat?arg=${this.msczIpfsRef}`
}
getMsczUrl (cidRes: { Key: string }): string {
const cid = cidRes.Key
if (!cid) throw new Error('score not in dataset')
return `https://ipfs.infura.io/ipfs/${cid}`
}
}
export class ScoreInfoInPage extends ScoreInfo {