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'; } finally { loadingEl.classList.add('hidden'); containerEl.classList.remove('hidden'); } } elements.analyzeStepsBtn.addEventListener('click', analyzeStepsWithGemini); // --- PDF DOWNLOAD FUNCTIONALITY --- async function downloadPDF() { const { jsPDF } = window.jspdf; const pdf = new jsPDF({ orientation: 'p', unit: 'mm', format: 'a4' }); const contentArea = elements.pdfContentAreaSteps; if (!contentArea) { console.error("PDF content area not found!"); return; } document.body.classList.add('pdf-export-mode'); try { const canvas = await html2canvas(contentArea, { scale: 2, useCORS: true, logging: false }); const imgData = canvas.toDataURL('image/png'); const imgProps = pdf.getImageProperties(imgData); const pdfWidth = pdf.internal.pageSize.getWidth(); const pdfHeight = (imgProps.height * pdfWidth) / imgProps.width; let heightLeft = pdfHeight; let position = 0; const pageHeight = pdf.internal.pageSize.getHeight(); pdf.addImage(imgData, 'PNG', 0, position, pdfWidth, pdfHeight); heightLeft -= pageHeight; while (heightLeft > 0) { position = heightLeft - pdfHeight; pdf.addPage(); pdf.addImage(imgData, 'PNG', 0, position, pdfWidth, pdfHeight); heightLeft -= pageHeight; } pdf.save('Daily_Steps_Progress_Report.pdf'); } catch (error) { console.error("Error generating PDF:", error); alert("An error occurred while generating the PDF. Please try again."); } finally { document.body.classList.remove('pdf-export-mode'); } } elements.downloadStepsPdfBtn.addEventListener('click', downloadPDF); // --- INITIALIZATION --- function initializeTool() { elements.stepsDate.valueAsDate = new Date(); updateStepTrackerView(); } initializeTool(); });