'; return; } let html = ''; for (let item of fileItems) { let statusIcon = ''; let statusText = ''; switch (item.status) { case 'pending': statusIcon = '⏳'; statusText='Pending'; break; case 'ready': statusIcon = '📄'; statusText='Ready'; break; case 'needs_password': statusIcon = '🔒'; statusText='Password required'; break; case 'compressing': statusIcon = '⚙️'; statusText=`Compressing ${item.progress}%`; break; case 'done': statusIcon = '✅'; statusText='Compressed'; break; case 'error': statusIcon = '❌'; statusText='Error'; break; } html += ` `; } fileListContainer.innerHTML = html; const anyDone = fileItems.some(f => f.status === 'done'); downloadAllZipBtn.disabled = !anyDone; } window.removeFile = function(id) { fileItems = fileItems.filter(f => f.id !== id); renderFileList(); if(fileItems.length === 0) previewCard.style.display = 'none'; }; window.retryWithPassword = async function(id) { const item = fileItems.find(f => f.id === id); if (!item) return; const pwd = prompt(`Enter password for ${item.name}:`); if (pwd === null) return; try { const load = pdfjsLib.getDocument({ data: await item.file.arrayBuffer(), password: pwd }); const doc = await load.promise; item.originalPdfDoc = doc; item.pdfData = await item.file.arrayBuffer(); item.pageCount = doc.numPages; item.passwordRequired = false; item.status = 'ready'; } catch(e) { alert('Wrong password or corrupted file'); item.status = 'error'; } renderFileList(); }; window.downloadSingle = function(id) { const item = fileItems.find(f => f.id === id); if (item && item.compressedBlob) { let finalName = renameFileInput.value.trim() || 'compressed'; finalName += `_${item.name.replace(/\.pdf$/i, '')}.pdf`; const url = URL.createObjectURL(item.compressedBlob); const a = document.createElement('a'); a.href = url; a.download = finalName; a.click(); URL.revokeObjectURL(url); } }; async function batchCompress() { if (activeCompression) { alert("Compression already in progress"); return; } const readyItems = fileItems.filter(f => f.status === 'ready' || (f.status === 'needs_password' && globalPassword.value) || f.status === 'done'); if (readyItems.length === 0) { alert("No valid PDFs ready. Upload PDFs and ensure password is correct."); return; } activeCompression = true; batchCompressBtn.disabled = true; const settings = { quality: parseInt(qualitySlider.value), scale: parseInt(scaleSlider.value), grayscale: grayscaleOpt.checked, removeMetadata: removeMetaOpt.checked, optimizeStructure: optimizeStructOpt.checked }; for (let item of readyItems) { if (item.status === 'done') continue; if (item.status === 'needs_password' && globalPassword.value) { await retryWithPassword(item.id); await new Promise(r => setTimeout(r, 200)); } if (item.status !== 'ready') continue; await compressSinglePDF(item, settings); } activeCompression = false; batchCompressBtn.disabled = false; renderFileList(); } batchCompressBtn.addEventListener('click', batchCompress); downloadAllZipBtn.addEventListener('click', async () => { const zip = new JSZip(); const doneFiles = fileItems.filter(f => f.status === 'done' && f.compressedBlob); if (!doneFiles.length) return; for (let item of doneFiles) { let name = renameFileInput.value.trim() ? renameFileInput.value.trim() + '_' + item.name : item.name.replace(/\.pdf$/i, '_compressed.pdf'); const blob = item.compressedBlob; zip.file(name, blob); } const content = await zip.generateAsync({ type: 'blob' }); const url = URL.createObjectURL(content); const a = document.createElement('a'); a.href = url; a.download = 'compressed_pdfs_batch.zip'; a.click(); URL.revokeObjectURL(url); }); function escapeHtml(str) { return str.replace(/[&<>]/g, function(m){if(m==='&') return '&'; if(m==='<') return '<'; if(m==='>') return '>'; return m;}); } // initial preview support renderFileList();