Sebastian Krüger
1771ca42eb
- Add Next.js 16 with Turbopack and React 19 - Add Tailwind CSS 4 with OKLCH color system - Implement FFmpeg.wasm for video/audio conversion - Implement ImageMagick WASM for image conversion - Add file upload with drag-and-drop - Add format selector with fuzzy search - Add conversion preview and download - Add conversion history with localStorage - Add dark/light theme support - Support 22+ file formats across video, audio, and images 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
96 lines
2.6 KiB
TypeScript
96 lines
2.6 KiB
TypeScript
/**
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* Format file size in human-readable format
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*/
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export function formatFileSize(bytes: number): string {
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if (bytes === 0) return '0 Bytes';
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const k = 1024;
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const sizes = ['Bytes', 'KB', 'MB', 'GB'];
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const i = Math.floor(Math.log(bytes) / Math.log(k));
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return `${Math.round(bytes / Math.pow(k, i) * 100) / 100} ${sizes[i]}`;
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}
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/**
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* Validate file size (max 500MB for browser processing)
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*/
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export function validateFileSize(file: File, maxSizeMB: number = 500): boolean {
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const maxBytes = maxSizeMB * 1024 * 1024;
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return file.size <= maxBytes;
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}
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/**
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* Get file extension from filename
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*/
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export function getFileExtension(filename: string): string {
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const lastDot = filename.lastIndexOf('.');
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return lastDot === -1 ? '' : filename.substring(lastDot + 1).toLowerCase();
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}
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/**
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* Get filename without extension
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*/
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export function getFilenameWithoutExtension(filename: string): string {
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const lastDot = filename.lastIndexOf('.');
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return lastDot === -1 ? filename : filename.substring(0, lastDot);
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}
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/**
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* Generate output filename
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*/
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export function generateOutputFilename(inputFilename: string, outputExtension: string): string {
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const basename = getFilenameWithoutExtension(inputFilename);
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return `${basename}.${outputExtension}`;
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}
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/**
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* Download blob as file
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*/
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export function downloadBlob(blob: Blob, filename: string): void {
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const url = URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = url;
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a.download = filename;
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document.body.appendChild(a);
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a.click();
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document.body.removeChild(a);
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URL.revokeObjectURL(url);
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}
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/**
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* Read file as ArrayBuffer
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*/
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export async function readFileAsArrayBuffer(file: File): Promise<ArrayBuffer> {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.onload = () => resolve(reader.result as ArrayBuffer);
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reader.onerror = () => reject(reader.error);
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reader.readAsArrayBuffer(file);
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});
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}
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/**
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* Read file as Data URL
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*/
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export async function readFileAsDataURL(file: File): Promise<string> {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.onload = () => resolve(reader.result as string);
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reader.onerror = () => reject(reader.error);
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reader.readAsDataURL(file);
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});
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}
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/**
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* Validate file type against allowed MIME types
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*/
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export function validateFileType(file: File, allowedTypes: string[]): boolean {
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return allowedTypes.some((type) => {
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if (type.endsWith('/*')) {
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const category = type.split('/')[0];
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return file.type.startsWith(`${category}/`);
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}
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return file.type === type;
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});
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}
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