Initial commit

index.js

@@ -0,0 +1,42 @@
+// Register service worker
+if ('serviceWorker' in navigator) {
+  navigator.serviceWorker.register('./sw.js', {
+    type: 'module'
+  })
+    .then(() => console.log('sw ok'))
+    .catch(() => console.log('sw not ok'))
+}
+
+var data = {}
+
+const infoEl = document.getElementById('info')
+const formEl = document.getElementById('search')
+
+// Register event listeners
+formEl.addEventListener('submit', (event) => {
+  if ('instances' in data && data.instances.length > 0) {
+    event.preventDefault()
+    // Random instance
+    const n = Math.floor(Math.random() * data.instances.length)
+    const instanceURL = data.instances[n]
+    // Assign URL
+    const params = new URLSearchParams({
+      q: formEl.query.value
+    })
+    const url = `${instanceURL}?${params.toString()}`
+    location.assign(url)
+  }
+})
+
+// Fetch data
+await fetch('./data.json')
+  .then(req => req.json())
+  .then(newData => { data = newData })
+  .then(() => {
+    infoEl.textContent = `${data.instances.length} instances`
+  })
+  .catch(err => {
+    console.error(err)
+    infoEl.textContent = err.toString()
+    infoEl.classList.add('error')
+  })