implemented basic ui

app/static/assets/js/helper.js

@@ -0,0 +1,94 @@
+async function fetchOriginsWithLeases(element) {
+    let xhr = new XMLHttpRequest();
+    xhr.open("GET", '/-/origins?leases=true', true);
+    xhr.onreadystatechange = function () {
+        if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) {
+            const x = JSON.parse(xhr.response)
+            console.debug(x)
+
+            element.innerHTML = ''
+            let table = document.createElement('table')
+            table.classList.add('table', 'mt-4');
+            let thead = document.createElement('thead');
+            thead.innerHTML = `
+                    <tr>
+                        <th scope="col">origin</th>
+                        <th scope="col">hostname</th>
+                        <th scope="col">OS</th>
+                        <th scope="col">driver version</th>
+                        <th scope="col">leases</th>
+                    </tr>`
+            table.appendChild(thead)
+            let tbody = document.createElement('thead');
+            x.forEach((o) => {
+                let row = document.createElement('tr');
+                row.innerHTML = `
+                        <td><code>${o.origin_ref}</code></td>
+                        <td>${o.hostname}</td>
+                        <td>${o.os_platform}</td>
+                        <td>${o.os_version}</td>
+                        <td>${o.leases.map(x => `<code title="expires: ${x.lease_expires}">${x.lease_ref}</code>`).join(', ')}</td>`
+                tbody.appendChild(row);
+            })
+            table.appendChild(tbody)
+            element.appendChild(table)
+        }
+    };
+    xhr.send();
+}
+
+async function fetchLeases(element) {
+    let xhr = new XMLHttpRequest();
+    xhr.open("GET", '/-/leases?origin=true', true);
+    xhr.onreadystatechange = function () {
+        if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) {
+            const x = JSON.parse(xhr.response)
+            console.debug(x)
+
+            element.innerHTML = ''
+            let table = document.createElement('table')
+            table.classList.add('table', 'mt-4');
+            let thead = document.createElement('thead');
+            thead.innerHTML = `
+                    <tr>
+                        <th scope="col">lease</th>
+                        <th scope="col">created</th>
+                        <th scope="col">updated</th>
+                        <th scope="col">expires</th>
+                        <th scope="col">origin</th>
+                    </tr>`
+            table.appendChild(thead)
+            let tbody = document.createElement('thead');
+            x.forEach((o) => {
+                let row = document.createElement('tr');
+                row.innerHTML = `
+                        <td><code>${o.lease_ref}</code></td>
+                        <td>${o.lease_created}</td>
+                        <td>${o.lease_updated}</td>
+                        <td>${o.lease_expires}</td>
+                        <td><code>${o.origin_ref}</code></td>`
+                tbody.appendChild(row);
+            })
+            table.appendChild(tbody)
+            element.appendChild(table)
+        }
+    };
+    xhr.send();
+}
+
+async function deleteOrigins() {
+    let xhr = new XMLHttpRequest();
+    xhr.open("DELETE", '/-/origins', true);
+    xhr.send();
+    await fetchOriginsWithLeases()
+}
+
+async function deleteLease(lease_ref) {
+    if (lease_ref === undefined)
+        lease_ref = window.prompt("Please enter 'lease_ref' which should be deleted");
+    if (lease_ref === null || lease_ref === "")
+        return
+    let xhr = new XMLHttpRequest();
+    xhr.open("DELETE", `/-/lease/${{lease_ref}}`, true);
+    xhr.send();
+}