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`; } function textToMarkdown(content, filename) { return `# ${filename} \`\`\` ${content} \`\`\` *Converted on ${new Date().toLocaleDateString()}*`; } function cleanTextContent(content) { return content.replace(/<[^>]*>/g, '').replace(/&[^;]+;/g, ' ').trim(); } function getMimeType(format) { const mimeTypes = { // Images 'jpg': 'image/jpeg', 'jpeg': 'image/jpeg', 'png': 'image/png', 'gif': 'image/gif', 'bmp': 'image/bmp', 'tiff': 'image/tiff', 'webp': 'image/webp', 'svg': 'image/svg+xml', // Documents 'txt': 'text/plain', 'json': 'application/json', 'csv': 'text/csv', 'xml': 'text/xml', 'yaml': 'text/yaml', 'yml': 'text/yaml', 'html': 'text/html', 'htm': 'text/html', 'md': 'text/markdown', 'rtf': 'application/rtf', 'pdf': 'application/pdf', // Audio 'mp3': 'audio/mpeg', 'wav': 'audio/wav', 'flac': 'audio/flac', 'aac': 'audio/aac', 'ogg': 'audio/ogg', // Video 'mp4': 'video/mp4', 'avi': 'video/x-msvideo', 'mov': 'video/quicktime', // Archives 'zip': 'application/zip', 'rar': 'application/x-rar-compressed', '7z': 'application/x-7z-compressed' }; return mimeTypes[format.toLowerCase()] || 'application/octet-stream'; } function createSimpleZip(filename, content) { // Simple ZIP file creation (very basic implementation) // In production, you'd use a proper ZIP library const zipHeader = new Uint8Array([0x50, 0x4B, 0x03, 0x04]); // ZIP signature const blob = new Blob([zipHeader, content], { type: 'application/zip' }); return blob; } function parseCsv(content) { const lines = content.split('\n').filter(line => line.trim()); return lines.map(line => line.split(',').map(cell => cell.replace(/"/g, '').trim())); } function parseXml(content) { try { const parser = new DOMParser(); const xmlDoc = parser.parseFromString(content, 'text/xml'); return xmlDoc; } catch (error) { return content; } } // Fallback function for unsupported conversions function createConvertedContent(content, file, fromFormat, toFormat) { const defaultContent = `File: ${file.name} Original Format: ${fromFormat.toUpperCase()} Converted To: ${toFormat.toUpperCase()} Conversion Date: ${new Date().toLocaleString()} File Size: ${(file.size / 1024 / 1024).toFixed(2)} MB Content Preview: ${typeof content === 'string' ? content.substring(0, 1000) : 'Binary content'} --- Converted with Premium File Converter`; return { content: defaultContent, mimeType: getMimeType(toFormat) }; } // Alternative sample file creation for fallback function createSampleFile() { const originalName = selectedFile.name.split('.')[0]; const newFileName = `${originalName}_converted.${selectedFormat}`; let content = `Conversion Result: Original File: ${selectedFile.name} Target Format: ${selectedFormat.toUpperCase()} Converted on: ${new Date().toLocaleString()} Status: Successfully converted Note: This is a sample conversion output.`; const blob = new Blob([content], { type: getMimeType(selectedFormat) }); const downloadUrl = URL.createObjectURL(blob); downloadBtn.onclick = () => { const a = document.createElement('a'); a.href = downloadUrl; a.download = newFileName; document.body.appendChild(a); a.click(); document.body.removeChild(a); URL.revokeObjectURL(downloadUrl); }; } // New conversion newConversionBtn.addEventListener('click', () => { successOverlay.style.display = 'none'; selectedFile = null; selectedFormat = null; uploadZone.style.display = 'block'; filePreview.style.display = 'none'; formatSelection.style.display = 'none'; convertButton.style.display = 'none'; fileInput.value = ''; // Reset format selection document.querySelectorAll('.format-btn').forEach(btn => { btn.classList.remove('selected'); }); }); });