`; // Close ubot-pdf-output
const pdfOutputEl = toolContainer.querySelector('#ubot-pdfOutput');
if (pdfOutputEl) pdfOutputEl.innerHTML = pdfHtml;
const opt = {
margin: [0.5, 0.4, 0.5, 0.4],
filename: `Utility_Optimization_Report_${new Date().toISOString().slice(0,10)}.pdf`,
image: { type: 'jpeg', quality: 0.95 },
html2canvas: { scale: 2, useCORS: true, logging: false, scrollX: 0, scrollY: 0, windowWidth: pdfOutputEl ? pdfOutputEl.scrollWidth : 1200, windowHeight: pdfOutputEl ? pdfOutputEl.scrollHeight + 50 : 1600},
jsPDF: { unit: 'in', format: 'letter', orientation: 'portrait' },
pagebreak: { mode: ['avoid-all', 'css', 'legacy'] }
};
if (html2pdf && pdfOutputEl) { // Check if html2pdf is loaded and pdfOutputEl exists
html2pdf().from(pdfOutputEl).set(opt).save()
.catch(err => console.error("PDF generation failed:", err));
} else {
alert("PDF generation library or output element not ready.");
}
});
// --- Tab Navigation ---
window.ubot_openTab = function(evt, tabName) {
tabs.forEach(tab => tab.style.display = 'none');
tabLinks.forEach(link => link.classList.remove('active'));
const activeTabContent = toolContainer.querySelector('#' + tabName);
if(activeTabContent) activeTabContent.style.display = 'block';
else { console.error(`Tab content for ${tabName} not found.`); return; }
let clickedIndex = -1;
if (evt && evt.currentTarget) {
evt.currentTarget.classList.add('active');
clickedIndex = tabLinks.indexOf(evt.currentTarget);
} else {
clickedIndex = tabLinks.findIndex(link => {
const onclickAttr = link.getAttribute('onclick');
return onclickAttr && onclickAttr.includes(tabName);
});
if (clickedIndex !== -1) tabLinks[clickedIndex].classList.add('active');
}
currentTabIndex = clickedIndex !== -1 ? clickedIndex : 0;
ubot_updateNavButtons();
if (tabName === 'ubot-tab2') { if(billUtilitySelectEl.value) handleBillUtilitySelectChange(); }
else if (tabName === 'ubot-tab3') { if(analysisUtilitySelectEl.value) ubot_renderAnalysis(); }
else if (tabName === 'ubot-tab4') { if(optimizeUtilitySelectEl.value) ubot_setupOptimizationTab(); }
}
window.ubot_navigateTab = function(direction) {
let newIndex = currentTabIndex;
if (direction === 'next' && currentTabIndex < tabs.length - 1) newIndex++;
else if (direction === 'prev' && currentTabIndex > 0) newIndex--;
if (tabLinks[newIndex] && newIndex !== currentTabIndex) tabLinks[newIndex].click();
}
function ubot_updateNavButtons() {
if(prevButton) prevButton.disabled = currentTabIndex === 0;
if(nextButton) nextButton.disabled = currentTabIndex >= tabs.length - 1; // >= in case tabs array is off
}
// --- Initialization ---
function initializeTool() {
if (!Chart || !html2pdf) {
alert("Required libraries (Chart.js or html2pdf.js) not loaded. Some features may not work.");
// return; // Or continue with degraded functionality
}
loadData();
renderUtilityConfigs();
populateUtilitySelects();
const today = new Date();
if(billPeriodEl) billPeriodEl.value = `${today.getFullYear()}-${String(today.getMonth() + 1).padStart(2, '0')}`;
ubot_openTab(null, 'ubot-tab1');
}
// Defensive check for Chart.js and html2pdf.js (if loaded via CDN, they might take time)
let attempts = 0;
function checkLibrariesAndInit() {
if (typeof Chart !== 'undefined' && typeof html2pdf !== 'undefined') {
initializeTool();
} else if (attempts < 20) { // Try for 2 seconds
attempts++;
setTimeout(checkLibrariesAndInit, 100);
} else {
alert("Error: Essential libraries (Chart.js, html2pdf.js) could not be loaded. Please check your internet connection or try again later. The tool may not function correctly.");
// Fallback initialization without charts or PDF perhaps, or just show an error.
// For now, it will proceed but chart/pdf functions will fail more gracefully due to checks.
initializeTool(); // Try to init anyway, functions have internal checks
}
}
checkLibrariesAndInit();
})();
