feature(lib): add event type query

lib/queries.js

@@ -501,6 +501,41 @@ export function getEventMetrics(
   );
 }
 
+export function getEventTypes(
+  website_id,
+  start_at,
+  end_at,
+  timezone = 'utc',
+  unit = 'day',
+  filters = {},
+) {
+  const params = [website_id, start_at, end_at];
+  const { url } = filters;
+
+  let urlFilter = '';
+
+  if (url) {
+    urlFilter = `and url=$${params.length + 1}`;
+    params.push(decodeURIComponent(url));
+  }
+
+  return rawQuery(
+    `
+    select
+      event_type x,
+      ${getDateQuery('created_at', unit, timezone)} t,
+      count(*) y
+    from event
+    where website_id=$1
+    and created_at between $2 and $3
+    ${urlFilter}
+    group by 1, 2
+    order by 2
+    `,
+    params,
+  );
+}
+
 export async function getRealtimeData(websites, time) {
   const [pageviews, sessions, events] = await Promise.all([
     getPageviews(websites, time),