Please enter valid positive values for Base SqFt Value, Square Footage, Bedrooms, and Bathrooms.

"; factorBreakdownEl.innerHTML = ""; notesContainerEl.style.display = 'none'; downloadPdfBtn.style.display = 'none'; inputSummaryForPdfEl.innerHTML = ""; valuationTitleEl.textContent = `"AI-Based" Valuation Estimate`; return; } valuationTitleEl.textContent = `"AI-Based" Valuation Estimate for ${escapeHtml(propertyName)}`; inputSummaryForPdfEl.innerHTML = `

Property Input Summary:

• Property Name: ${escapeHtml(propertyName)}
• Location: ${locationType}, Type: ${propertyType}
• Sq. Footage: ${sqFt.toLocaleString()} sqft (Base Value: $${baseSqftValue.toLocaleString()}/sqft)
• Beds: ${bedrooms}, Baths: ${bathrooms}, Lot: ${lotSize} acres
• Age: ${propertyAge} years, Condition: ${condition}
• Recent Renovations: ${recentRenovations ? 'Yes' : 'No'}

`; let estimatedValue = baseSqftValue * sqFt; let breakdownHTML = "

Illustrative Valuation Factors:

"; breakdownHTML += `
• Base Value (from Sq. Footage): $${estimatedValue.toLocaleString(undefined, {minimumFractionDigits:0, maximumFractionDigits:0})}
`; // Location Multiplier let locMultiplier = 1.0; let locAdj = 0; if (locationType === 'Urban') locMultiplier = 1.15; // +15% else if (locationType === 'Rural') locMultiplier = 0.85; // -15% locAdj = estimatedValue * (locMultiplier - 1); estimatedValue *= locMultiplier; breakdownHTML += `
• Location Type (${locationType}) Adjustment: ${locAdj >= 0 ? '+' : ''}$${locAdj.toLocaleString(undefined, {minimumFractionDigits:0, maximumFractionDigits:0})}
`; // Property Type Multiplier (relative to SingleFamily) let typeMultiplier = 1.0; let typeAdj = 0; if (propertyType === 'Condo') typeMultiplier = 0.90; // -10% else if (propertyType === 'Townhouse') typeMultiplier = 0.95; // -5% else if (propertyType === 'MultiFamily') typeMultiplier = 1.20; // +20% (assuming per unit value is handled by sqft) typeAdj = estimatedValue * (typeMultiplier - 1); // Apply to current value after location estimatedValue *= typeMultiplier; breakdownHTML += `
• Property Type (${propertyType}) Adjustment: ${typeAdj >= 0 ? '+' : ''}$${typeAdj.toLocaleString(undefined, {minimumFractionDigits:0, maximumFractionDigits:0})}
`; // Bedrooms/Bathrooms (simple addition) let bedBathAdj = 0; bedBathAdj += (bedrooms - 2) * 10000; // $10k per bedroom above/below 2 bedBathAdj += (bathrooms - 1.5) * 5000; // $5k per 0.5 bath above/below 1.5 estimatedValue += bedBathAdj; breakdownHTML += `
• Bedrooms/Bathrooms Adjustment: ${bedBathAdj >= 0 ? '+' : ''}$${bedBathAdj.toLocaleString(undefined, {minimumFractionDigits:0, maximumFractionDigits:0})}
`; // Lot Size (very simplified) let lotAdj = 0; if (lotSize > 0.5 && propertyType === 'SingleFamily') lotAdj = (lotSize - 0.5) * 20000; // $20k per 0.5 acre above 0.5 estimatedValue += lotAdj; breakdownHTML += `
• Lot Size Adjustment: ${lotAdj >= 0 ? '+' : ''}$${lotAdj.toLocaleString(undefined, {minimumFractionDigits:0, maximumFractionDigits:0})}
`; // Age & Condition let ageCondMultiplier = 1.0; let ageCondAdj = 0; if (propertyAge > 50) ageCondMultiplier -= 0.10; // -10% for very old else if (propertyAge > 20) ageCondMultiplier -= 0.05; // -5% for old if (condition === 'Excellent') ageCondMultiplier += 0.10; else if (condition === 'Fair') ageCondMultiplier -= 0.07; else if (condition === 'Poor') ageCondMultiplier -= 0.15; if (recentRenovations && condition !== 'Excellent') ageCondMultiplier += 0.08; // Renovation bonus if not already excellent ageCondAdj = estimatedValue * (ageCondMultiplier -1); // Apply to current value estimatedValue *= ageCondMultiplier; breakdownHTML += `
• Age, Condition & Renovations Adjustment: ${ageCondAdj >= 0 ? '+' : ''}$${ageCondAdj.toLocaleString(undefined, {minimumFractionDigits:0, maximumFractionDigits:0})}
`; breakdownHTML += "

"; factorBreakdownEl.innerHTML = breakdownHTML; valuationResultsEl.innerHTML = `

$${estimatedValue.toLocaleString(undefined, {minimumFractionDigits:0, maximumFractionDigits:0})}

`; notesContainerEl.style.display = 'block'; downloadPdfBtn.style.display = 'block'; } // --- PDF Download --- downloadPdfBtn?.addEventListener('click', function () { const { jsPDF } = window.jspdf; const pdfOutputArea = document.getElementById('aivPdfOutputArea'); if (!pdfOutputArea || valuationResultsEl.innerHTML.includes("Please enter property details")) { alert('Please estimate the value first before downloading PDF.'); return; } // Ensure notes are visible for PDF capture document.getElementById('aivNotesContainer').style.display = 'block'; document.getElementById('aivInputSummaryForPdf').style.display = 'block'; // Ensure summary is visible html2canvas(pdfOutputArea, { scale: 1.5, useCORS: true, backgroundColor: '#ffffff', windowWidth: pdfOutputArea.scrollWidth }) .then(canvas => { const imgData = canvas.toDataURL('image/jpeg', 0.9); const pdf = new jsPDF({ orientation: 'portrait', unit: 'pt', format: 'a4' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const pdfHeight = pdf.internal.pageSize.getHeight(); const margin = 30; let contentWidth = pdfWidth - 2 * margin; const canvasWidth = canvas.width; const canvasHeight = canvas.height; const ratio = canvasWidth / canvasHeight; let imgWidth = contentWidth; let imgHeight = imgWidth / ratio; if (imgHeight > pdfHeight - 2 * margin) { imgHeight = pdfHeight - 2 * margin; imgWidth = imgHeight * ratio; if (imgWidth > contentWidth) { imgWidth = contentWidth; imgHeight = imgWidth / ratio; } } const x = (pdfWidth - imgWidth) / 2; pdf.addImage(imgData, 'JPEG', x, margin, imgWidth, imgHeight, undefined, 'MEDIUM'); pdf.save('AI_Property_Valuation_Demo.pdf'); }) .catch(err => { console.error("Error generating PDF:", err); alert("Error generating PDF. See console for details."); }); }); // --- Utility --- function escapeHtml(unsafe) { if (typeof unsafe !== 'string') return unsafe === undefined || unsafe === null ? '' : String(unsafe); return unsafe.replace(/&/g, "&").replace(//g, ">").replace(/"/g, """).replace(/'/g, "'"); } // --- Initial Setup --- switchTab('propertyDetailsTab'); });