web app

static/app.js

@@ -0,0 +1,28 @@
+const form = document.querySelector('#review-form');
+const statusBox = document.querySelector('#status');
+const resultBox = document.querySelector('#result');
+const button = form.querySelector('button');
+
+form.addEventListener('submit', async (event) => {
+  event.preventDefault(); button.disabled = true; resultBox.hidden = true;
+  statusBox.className = 'status'; statusBox.textContent = 'Odczytuję dokładne liczniki…';
+  try {
+    const response = await fetch('/api/reviews', {method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify({url: document.querySelector('#maps-url').value})});
+    const data = await response.json();
+    if (!response.ok) throw new Error(data.error || 'Nie udało się pobrać danych.');
+    document.querySelector('#total').textContent = data.total.toLocaleString('pl-PL');
+    document.querySelector('#average').textContent = data.average.toLocaleString('pl-PL', {minimumFractionDigits: 2});
+    const max = Math.max(...Object.values(data.ratings), 1);
+    const rows = Object.entries(data.ratings).map(([stars, count]) => {
+      const row = document.createElement('div'); row.className = 'rating-row';
+      const label = document.createElement('span'); label.textContent = `${stars} ★`;
+      const bar = document.createElement('div'); bar.className = 'bar';
+      const fill = document.createElement('i'); fill.style.width = `${count / max * 100}%`; bar.append(fill);
+      const value = document.createElement('strong'); value.textContent = count.toLocaleString('pl-PL');
+      row.append(label, bar, value); return row;
+    });
+    document.querySelector('#ratings').replaceChildren(...rows);
+    statusBox.textContent = ''; resultBox.hidden = false;
+  } catch (error) { statusBox.className = 'status error'; statusBox.textContent = error.message; }
+  finally { button.disabled = false; }
+});