feat: add trash utils

src/utils.ts

@@ -0,0 +1,25 @@
+import { trash } from "./data";
+import { closestTo, format } from "date-fns";
+
+const trashMap: Record<number, string> = {
+  0: "Papiertonne",
+  1: "Restabfalltonne",
+  2: "Biotonne",
+  3: "Wertstofftonne",
+  4: "Sperrgut, Grünabfall",
+};
+
+const parseDate = (date: string) => {
+  const [year, month, day] = date.split("-").map(Number);
+  return new Date(year, month - 1, day);
+};
+
+export const getTrash = () => {
+  const dates = Object.keys(trash)
+    .map(parseDate)
+    .filter((d) => d > new Date());
+  const closest = closestTo(new Date(), dates);
+  if (!closest) return [];
+  const date = format(closest, "yyyy-MM-dd");
+  return trash[date].map((t) => trashMap[t]);
+};