Solution:
${escapeHtml(solutionSteps)}
`;
// Hide solution by default
wpgShowSolution(false);
};
window.wpgShowSolution = function(show) {
const solutionBox = document.getElementById('wpg-solution-display');
if (solutionBox) {
solutionBox.classList.toggle('hidden', !show);
}
};
// --- PDF Download ---
window.wpgDownloadPDF = function() {
// Ensure problem is generated
if (lastProblem.text === "Problem not yet generated.") {
wpgGenerateProblem();
}
const element = document.getElementById('wpg-print-area');
// Ensure solution is visible for PDF generation
wpgShowSolution(true);
document.body.classList.add('wpg-generating-pdf');
const opt = {
margin: [0.5, 0.5],
filename: `Word_Problem_Sheet_${new Date().toISOString().split('T')[0]}.pdf`,
image: { type: 'jpeg', quality: 0.98 },
html2canvas: { scale: 2, useCORS: true },
jsPDF: { unit: 'in', format: 'letter', orientation: 'portrait' }
};
html2pdf().set(opt).from(element).save().then(() => {
document.body.classList.remove('wpg-generating-pdf');
// Re-hide solution after PDF generation
wpgShowSolution(false);
});
};
// Utility: HTML Escape
function escapeHtml(text) {
if (!text) return '';
// Use monospace font to display the code/math cleanly
if (text.startsWith('\nFormula')) {
return text; // Already formatted as pre-wrap content
}
return text.replace(/[&<>"']/g, function(m) {
switch (m) {
case '&': return '&';
case '<': return '<';
case '>': return '>';
case '"': return '"';
case "'": return ''';
default: return m;
}
});
}
