mirror of
https://github.com/algerkong/AlgerMusicPlayer.git
synced 2026-04-15 07:20:49 +08:00
136 lines
3.7 KiB
TypeScript
136 lines
3.7 KiB
TypeScript
import type { SongResult } from '@/types/music';
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/**
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* 从 localStorage 获取项目，带类型安全和错误处理
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*/
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export function getLocalStorageItem<T>(key: string, defaultValue: T): T {
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try {
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const item = localStorage.getItem(key);
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return item ? JSON.parse(item) : defaultValue;
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} catch {
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return defaultValue;
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}
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}
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/**
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* 设置 localStorage 项目，自动序列化
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*/
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export function setLocalStorageItem<T>(key: string, value: T): void {
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try {
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localStorage.setItem(key, JSON.stringify(value));
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} catch (error) {
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console.error(`Failed to save to localStorage: ${key}`, error);
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}
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}
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/**
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* 比较B站视频ID的辅助函数
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*/
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export const isBilibiliIdMatch = (id1: string | number, id2: string | number): boolean => {
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const str1 = String(id1);
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const str2 = String(id2);
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// 如果两个ID都不包含--分隔符，直接比较
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if (!str1.includes('--') && !str2.includes('--')) {
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return str1 === str2;
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}
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// 处理B站视频ID
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if (str1.includes('--') || str2.includes('--')) {
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// 尝试从ID中提取bvid和cid
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const extractBvIdAndCid = (str: string) => {
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if (!str.includes('--')) return { bvid: '', cid: '' };
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const parts = str.split('--');
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if (parts.length >= 3) {
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// bvid--pid--cid格式
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return { bvid: parts[0], cid: parts[2] };
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} else if (parts.length === 2) {
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// 旧格式或其他格式
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return { bvid: '', cid: parts[1] };
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}
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return { bvid: '', cid: '' };
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};
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const { bvid: bvid1, cid: cid1 } = extractBvIdAndCid(str1);
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const { bvid: bvid2, cid: cid2 } = extractBvIdAndCid(str2);
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// 如果两个ID都有bvid，比较bvid和cid
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if (bvid1 && bvid2) {
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return bvid1 === bvid2 && cid1 === cid2;
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}
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// 其他情况，只比较cid部分
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if (cid1 && cid2) {
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return cid1 === cid2;
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}
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}
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// 默认情况，直接比较完整ID
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return str1 === str2;
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};
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/**
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* Fisher-Yates 洗牌算法
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* @param list 歌曲列表
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* @param currentSong 当前歌曲（会被放在第一位）
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*/
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export const performShuffle = (list: SongResult[], currentSong?: SongResult): SongResult[] => {
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if (list.length <= 1) return [...list];
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const result: SongResult[] = [];
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const remainingSongs = [...list];
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// 如果指定了当前歌曲，先把它放在第一位
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if (currentSong && currentSong.id) {
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const currentSongIndex = remainingSongs.findIndex((song) => song.id === currentSong.id);
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if (currentSongIndex !== -1) {
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// 把当前歌曲放在第一位
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result.push(remainingSongs.splice(currentSongIndex, 1)[0]);
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}
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}
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// 对剩余歌曲进行洗牌
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if (remainingSongs.length > 0) {
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// Fisher-Yates 洗牌算法
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for (let i = remainingSongs.length - 1; i > 0; i--) {
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const j = Math.floor(Math.random() * (i + 1));
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[remainingSongs[i], remainingSongs[j]] = [remainingSongs[j], remainingSongs[i]];
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}
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// 把洗牌后的歌曲添加到结果中
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result.push(...remainingSongs);
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}
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return result;
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};
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/**
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* 预加载封面图片
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*/
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export const preloadCoverImage = (
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picUrl: string,
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getImgUrl: (url: string, size: string) => string
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) => {
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if (!picUrl) return;
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try {
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const imageUrl = getImgUrl(picUrl, '500y500');
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console.log('预加载封面图片:', imageUrl);
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// 创建一个 Image 对象来预加载图片
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const img = new Image();
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img.src = imageUrl;
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// 可选：添加加载完成和错误的回调
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img.onload = () => {
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console.log('封面图片预加载成功:', imageUrl);
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};
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img.onerror = () => {
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console.error('封面图片预加载失败:', imageUrl);
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};
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} catch (error) {
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console.error('预加载封面图片出错:', error);
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}
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};
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