65 lines
1.8 KiB
TypeScript
65 lines
1.8 KiB
TypeScript
import {DecryptResult} from "@/decrypt/entity";
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export enum FilenamePolicy {
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ArtistAndTitle,
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TitleOnly,
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TitleAndArtist,
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SameAsOriginal,
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}
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export const FilenamePolicies: { key: FilenamePolicy, text: string }[] = [
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{key: FilenamePolicy.ArtistAndTitle, text: "歌手-歌曲名"},
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{key: FilenamePolicy.TitleOnly, text: "歌曲名"},
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{key: FilenamePolicy.TitleAndArtist, text: "歌曲名-歌手"},
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{key: FilenamePolicy.SameAsOriginal, text: "同源文件名"},
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]
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export function DownloadBlobMusic(data: DecryptResult, policy: FilenamePolicy) {
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const a = document.createElement('a');
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a.href = data.file;
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switch (policy) {
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default:
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case FilenamePolicy.ArtistAndTitle:
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a.download = data.artist + " - " + data.title + "." + data.ext;
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break;
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case FilenamePolicy.TitleOnly:
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a.download = data.title + "." + data.ext;
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break;
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case FilenamePolicy.TitleAndArtist:
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a.download = data.title + " - " + data.artist + "." + data.ext;
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break;
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case FilenamePolicy.SameAsOriginal:
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a.download = data.rawFilename + "." + data.ext;
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break;
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}
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document.body.append(a);
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a.click();
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a.remove();
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}
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export function RemoveBlobMusic(data: DecryptResult) {
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URL.revokeObjectURL(data.file);
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if (data.picture?.startsWith("blob:")) {
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URL.revokeObjectURL(data.picture);
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}
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}
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export class DecryptQueue {
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private readonly pending: (() => Promise<void>)[];
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constructor() {
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this.pending = []
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}
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queue(fn: () => Promise<void>) {
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this.pending.push(fn)
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this.consume()
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}
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private consume() {
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const fn = this.pending.shift()
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if (fn) fn().then(() => this.consume).catch(console.error)
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}
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}
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