42 lines
1.4 KiB
TypeScript
42 lines
1.4 KiB
TypeScript
/**
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* 生成唯一ID
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* @param prefix - 可选的ID前缀
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* @returns 唯一ID字符串
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*/
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export function generateUniqueId(prefix?: string): string {
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// 获取当前时间戳
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const timestamp = Date.now();
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// 生成随机数部分
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const randomPart = Math.random().toString(36).substring(2, 8);
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// 获取环境特定的额外随机性
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const environmentPart =
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typeof window !== "undefined"
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? window.crypto.getRandomValues(new Uint32Array(1))[0].toString(36)
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: require("crypto").randomBytes(4).toString("hex");
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// 组合所有部分
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const uniquePart = `${timestamp}${randomPart}${environmentPart}`;
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// 如果提供了前缀，则添加前缀
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return prefix ? `${prefix}_${uniquePart}` : uniquePart;
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}
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export const formatFileSize = (bytes: number) => {
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if (bytes < 1024) return `${bytes} B`;
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if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
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if (bytes < 1024 * 1024 * 1024)
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return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
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return `${(bytes / (1024 * 1024 * 1024)).toFixed(2)} GB`;
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};
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// 压缩图片路径生成函数
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export const getCompressedImageUrl = (originalUrl: string): string => {
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if (!originalUrl) {
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return originalUrl;
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}
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const cleanUrl = originalUrl.split(/[?#]/)[0]; // 移除查询参数和哈希
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const lastSlashIndex = cleanUrl.lastIndexOf("/");
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return `${cleanUrl.slice(0, lastSlashIndex)}/compressed/${cleanUrl.slice(lastSlashIndex + 1).replace(/\.[^.]+$/, ".webp")}`;
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};
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export * from "./types";
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