1 files changed, 31 insertions, 0 deletions
diff --git a/src/lib/filters.ts b/src/lib/filters.ts
new file mode 100644
index 0000000..3da268d
--- /dev/null
+++ b/src/lib/filters.ts
@@ -0,0 +1,31 @@
+export const percentFilter = (data: any[]) => {
+  if (!Array.isArray(data)) return [];
+  const total = data.reduce((n, { y }) => n + y, 0);
+  return data.map(({ x, y, ...props }) => ({ x, y, z: total ? (y / total) * 100 : 0, ...props }));
+};
+
+export const paramFilter = (data: any[]) => {
+  const map = data.reduce((obj, { x, y }) => {
+    try {
+      const searchParams = new URLSearchParams(x);
+
+      for (const [key, value] of searchParams) {
+        if (!obj[key]) {
+          obj[key] = { [value]: y };
+        } else if (!obj[key][value]) {
+          obj[key][value] = y;
+        } else {
+          obj[key][value] += y;
+        }
+      }
+    } catch {
+      // Ignore
+    }
+
+    return obj;
+  }, {});
+
+  return Object.keys(map).flatMap(key =>
+    Object.keys(map[key]).map(n => ({ x: `${key}=${n}`, p: key, v: n, y: map[key][n] })),
+  );
+};