Soil Quality (Nitrates)
${avgSoil.toFixed(1)} mg/kg
`;
};
const renderDataTable = () => {
dataTableBody.innerHTML = '';
const sortedReadings = [...state.readings].sort((a, b) => new Date(b.date) - new Date(a.date));
sortedReadings.forEach(r => {
const row = `
| ${r.date} |
${r.location} |
${r.type} |
${r.metric} |
${r.value} ${r.unit} |
`;
dataTableBody.innerHTML += row;
});
};
const renderCharts = () => {
// Trend Chart
const sortedReadings = [...state.readings].sort((a, b) => new Date(a.date) - new Date(b.date));
const airData = sortedReadings.filter(r => r.metric === 'PM2.5').map(r => ({x: r.date, y: r.value}));
const waterData = sortedReadings.filter(r => r.metric === 'Lead').map(r => ({x: r.date, y: r.value}));
if (trendChart) trendChart.destroy();
trendChart = new Chart(trendCanvas.getContext('2d'), {
type: 'line',
data: {
datasets: [
{ label: 'Air (PM2.5)', data: airData, borderColor: '#38bdf8', yAxisID: 'yAir' },
{ label: 'Water (Lead)', data: waterData, borderColor: '#60a5fa', yAxisID: 'yWater' }
]
},
options: {
responsive: true, maintainAspectRatio: false,
scales: {
x: { type: 'time', time: { unit: 'day' } },
yAir: { type: 'linear', position: 'left', title: {display: true, text: 'µg/m³'} },
yWater: { type: 'linear', position: 'right', title: {display: true, text: 'ppb'}, grid: {drawOnChartArea: false} }
}
}
});
// Type Chart
const readingsByType = state.readings.reduce((acc, r) => {
acc[r.type] = (acc[r.type] || 0) + 1;
return acc;
}, {});
const typeLabels = Object.keys(readingsByType);
const typeData = typeLabels.map(label => readingsByType[label]);
if (typeChart) typeChart.destroy();
typeChart = new Chart(typeCanvas.getContext('2d'), {
type: 'pie',
data: {
labels: typeLabels,
datasets: [{ data: typeData, backgroundColor: ['#7dd3fc', '#93c5fd', '#fcd34d'] }]
},
options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { position: 'top' } } }
});
};
const renderConfigRows = () => {
configRowsContainer.innerHTML = '';
const sortedReadings = [...state.readings].sort((a,b) => b.id - a.id);
sortedReadings.forEach(r => {
configRowsContainer.innerHTML += `
`.replaceAll('class="config-input"', 'class="config-input w-full border-gray-300 rounded-md shadow-sm"');
});
addConfigEventListeners();
};
// --- EVENT HANDLERS ---
const handleConfigChange = (e) => {
const id = parseInt(e.target.dataset.id);
const field = e.target.dataset.field;
const value = (e.target.type === 'number') ? parseFloat(e.target.value) || 0 : e.target.value;
const reading = state.readings.find(r => r.id === id);
if (reading) reading[field] = value;
renderAll();
};
const handleAddLog = () => {
const newId = state.readings.length > 0 ? Math.max(...state.readings.map(l => l.id)) + 1 : 1;
const today = new Date().toISOString().split('T')[0];
state.readings.push({ id: newId, date: today, location: "New Location", type: "Air", metric: "PM2.5", value: 0, unit: "µg/m³" });
renderAll();
};
const handleRemoveLog = (e) => {
const id = parseInt(e.target.dataset.id);
state.readings = state.readings.filter(r => r.id !== id);
renderAll();
};
const addConfigEventListeners = () => {
document.querySelectorAll('.config-input').forEach(input => input.addEventListener('change', handleConfigChange));
document.querySelectorAll('.remove-btn').forEach(button => button.addEventListener('click', handleRemoveLog));
};
const handleDownloadPdf = () => {
const { jsPDF } = window.jspdf;
const pdfContent = document.getElementById('pdf-content');
document.querySelectorAll('.no-print').forEach(el => el.style.visibility = 'hidden');
Chart.defaults.animation = false;
html2canvas(pdfContent, { scale: 2, useCORS: true, backgroundColor: '#ffffff' }).then(canvas => {
document.querySelectorAll('.no-print').forEach(el => el.style.visibility = 'visible');
Chart.defaults.animation = true;
const imgData = canvas.toDataURL('image/png');
const pdf = new jsPDF({ orientation: 'p', unit: 'mm', format: 'a4' });
const pdfWidth = pdf.internal.pageSize.getWidth();
const imgWidth = pdfWidth - 20;
const imgHeight = canvas.height * imgWidth / canvas.width;
pdf.addImage(imgData, 'PNG', 10, 10, imgWidth, imgHeight);
pdf.save('Pollution-Levels-Dashboard.pdf');
});
};
// --- TABBING LOGIC ---
let currentTabIndex = 0;
const updateTabButtons = () => {
prevTabBtn.disabled = currentTabIndex === 0;
nextTabBtn.disabled = currentTabIndex === tabContents.length - 1;
};
const switchTab = (index) => {
tabButtons.forEach(btn => btn.classList.remove('active'));
tabContents.forEach(content => content.classList.remove('active'));
tabButtons[index].classList.add('active');
tabContents[index].classList.add('active');
currentTabIndex = index;
updateTabButtons();
};
tabButtons.forEach((button, index) => button.addEventListener('click', () => switchTab(index)));
prevTabBtn.addEventListener('click', () => { if (currentTabIndex > 0) switchTab(currentTabIndex - 1); });
nextTabBtn.addEventListener('click', () => { if (currentTabIndex < tabContents.length - 1) switchTab(currentTabIndex + 1); });
// --- INITIALIZATION ---
if (kpiContainer && addLogBtn && downloadPdfBtn) {
addLogBtn.addEventListener('click', handleAddLog);
downloadPdfBtn.addEventListener('click', handleDownloadPdf);
renderAll();
updateTabButtons();
} else {
console.error("Essential dashboard elements could not be found.");
}
});
