× `; workoutLogList.appendChild(li); }); } window.removeWorkout = function(id) { workoutLog = workoutLog.filter(w => w.id !== id); renderWorkoutLog(); }; function calculateAndDisplayDashboard() { if (workoutLog.length === 0) { // Reset dashboard to empty state totalWorkoutsEl.textContent = '0'; totalDurationEl.innerHTML = '0min'; totalDistanceEl.innerHTML = '0mi'; activityChart.innerHTML = '

No data to display in chart.

'; resultsTableBody.innerHTML = 'No workouts logged.'; return; } // Calculations const totalWorkouts = workoutLog.length; const totalDuration = workoutLog.reduce((sum, w) => sum + w.duration, 0); // Normalize distances to miles for total calculation const totalDistanceMiles = workoutLog.reduce((sum, w) => { const distanceInMiles = w.unit === 'km' ? w.distance * 0.621371 : w.distance; return sum + distanceInMiles; }, 0); // Update summary cards totalWorkoutsEl.textContent = totalWorkouts; totalDurationEl.innerHTML = `${totalDuration}min`; totalDistanceEl.innerHTML = `${totalDistanceMiles.toFixed(1)}mi`; // Update table resultsTableBody.innerHTML = ''; const sortedLog = [...workoutLog].sort((a, b) => new Date(b.date) - new Date(a.date)); sortedLog.forEach(w => { const row = resultsTableBody.insertRow(); const formattedDate = new Date(w.date).toLocaleDateString('en-US', { month: '2-digit', day: '2-digit', year: 'numeric' }); row.innerHTML = ` ${formattedDate} ${w.activity} ${w.duration} min ${w.distance.toFixed(1)} ${w.unit} `; }); // Update chart const activityData = {}; workoutLog.forEach(w => { activityData[w.activity] = (activityData[w.activity] || 0) + w.duration; }); const maxDuration = Math.max(...Object.values(activityData), 1); activityChart.innerHTML = ''; Object.entries(activityData).forEach(([activity, duration]) => { const barHeight = (duration / maxDuration) * 100; const barWrapper = document.createElement('div'); barWrapper.className = 'chart-bar-wrapper'; barWrapper.innerHTML = ` `; activityChart.appendChild(barWrapper); }); } // --- TAB NAVIGATION --- window.changeTab = function(tabNumber) { if (tabNumber === currentTab) return; if (tabNumber === 2) { calculateAndDisplayDashboard(); } document.getElementById(`tab-panel-${currentTab}`).classList.add('hidden'); document.getElementById(`tab-btn-${currentTab}`).classList.remove('active', 'border-indigo-500'); document.getElementById(`tab-btn-${currentTab}`).classList.add('inactive'); document.getElementById(`tab-panel-${tabNumber}`).classList.remove('hidden'); document.getElementById(`tab-btn-${tabNumber}`).classList.add('active', 'border-indigo-500'); document.getElementById(`tab-btn-${tabNumber}`).classList.remove('inactive'); currentTab = tabNumber; updateNavButtons(); }; window.navigateTabs = function(direction) { const newTab = direction === 'next' ? currentTab + 1 : currentTab - 1; if (newTab >= 1 && newTab <= 2) { changeTab(newTab); } }; function updateNavButtons() { prevBtn.disabled = (currentTab === 1); nextBtn.disabled = (currentTab === 2); } // --- PDF GENERATION --- function generatePdf() { const contentToPrint = document.getElementById('pdf-content-container'); const pdfButtonWrapper = document.getElementById('pdf-button-wrapper'); if (!contentToPrint) { console.error("PDF content container not found."); return; } // Hide button wrapper before capture if (pdfButtonWrapper) pdfButtonWrapper.style.display = 'none'; html2canvas(contentToPrint, { scale: 2, useCORS: true, logging: false }).then(canvas => { // Restore button immediately after capture if (pdfButtonWrapper) pdfButtonWrapper.style.display = 'block'; const imgData = canvas.toDataURL('image/png'); const { jsPDF } = window.jspdf; const pdf = new jsPDF({ orientation: 'portrait', unit: 'pt', format: 'a4' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const pdfHeight = pdf.internal.pageSize.getHeight(); const canvasAspectRatio = canvas.width / canvas.height; let imgWidth = pdfWidth - 80; // 40pt margins let imgHeight = imgWidth / canvasAspectRatio; // If content is too tall, scale it down to fit one page if (imgHeight > pdfHeight - 80) { imgHeight = pdfHeight - 80; imgWidth = imgHeight * canvasAspectRatio; } const x = (pdfWidth - imgWidth) / 2; const y = 40; pdf.addImage(imgData, 'PNG', x, y, imgWidth, imgHeight); pdf.save('Cardio-Workout-Dashboard.pdf'); }).catch(err => { if (pdfButtonWrapper) pdfButtonWrapper.style.display = 'block'; console.error("Error generating PDF:", err); alert("Sorry, an error occurred while creating the PDF."); }); } // --- START THE APP --- initialize(); });