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zero-knowledge file sharing
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596export const IMAGE_EXTS = new Set(["png", "jpg", "jpeg", "gif", "webp", "ico", "bmp", "avif"]);
export const TEXT_EXTS = new Set([ "txt", "md", "js", "ts", "jsx", "tsx", "json", "yaml", "yml", "toml", "xml", "html", "css", "sh", "py", "rb", "go", "rs", "java", "c", "cpp", "h", "php", "sql", "csv", "log", "ini", "env",]);
export const VIDEO_EXTS = new Set(["mp4", "webm", "ogv", "mov"]);
export const AUDIO_EXTS = new Set(["mp3", "wav", "ogg", "flac", "aac", "m4a"]);
export const VIDEO_MIME: Record<string, string> = { mp4: "video/mp4", webm: "video/webm", ogv: "video/ogg", mov: "video/mp4",};
export const AUDIO_MIME: Record<string, string> = { mp3: "audio/mpeg", wav: "audio/wav", ogg: "audio/ogg", flac: "audio/flac", aac: "audio/aac", m4a: "audio/mp4",};
export const IMAGE_MIME: Record<string, string> = { png: "image/png", jpg: "image/jpeg", jpeg: "image/jpeg", gif: "image/gif", webp: "image/webp", ico: "image/x-icon", bmp: "image/bmp", avif: "image/avif",};
export function getExt(name: string): string { const parts = name.split("."); return parts.length > 1 ? parts[parts.length - 1].toLowerCase() : "";}
export function formatBytes(n: number): string { if (n < 1000) return `${n} B`; if (n < 1e6) return `${parseFloat((n / 1e3).toFixed(1))} KB`; if (n < 1e9) return `${parseFloat((n / 1e6).toFixed(1))} MB`; return `${parseFloat((n / 1e9).toFixed(2))} GB`;}
export function formatExpiry(unixSec: number): string { const secs = unixSec - Math.floor(Date.now() / 1000); if (secs < 60) return "expires in less than a minute"; const mins = Math.floor(secs / 60); if (secs < 3600) return `expires in ${mins} ${mins === 1 ? "minute" : "minutes"}`; const hours = Math.floor(secs / 3600); if (secs < 86400) return `expires in ${hours} ${hours === 1 ? "hour" : "hours"}`; const days = Math.floor(secs / 86400); return `expires in ${days} ${days === 1 ? "day" : "days"}`;}
export function triggerDownload(blob: Blob, fileName: string) { const url = URL.createObjectURL(blob); const a = document.createElement("a"); a.href = url; a.download = fileName; a.click(); setTimeout(() => URL.revokeObjectURL(url), 60000);}