more refactor

src/features/local/utils/settingsUtils.tsx

@@ -0,0 +1,50 @@
+import {
+  getDateFromStringOrThrow,
+  getDateOnlyMarkdownString,
+} from "./timeUtils";
+
+export const parseHolidays = (
+  inputText: string
+): {
+  name: string;
+  days: string[];
+}[] => {
+  let holidays: {
+    name: string;
+    days: string[];
+  }[] = [];
+
+  const lines = inputText.split("\n").filter((line) => line.trim() !== "");
+  let currentHoliday: string | null = null;
+
+  lines.forEach((line) => {
+    if (line.includes(":")) {
+      const holidayName = line.split(":")[0].trim();
+      currentHoliday = holidayName;
+      holidays = [...holidays, { name: holidayName, days: [] }];
+    } else if (currentHoliday && line.startsWith("-")) {
+      const date = line.replace("-", "").trim();
+      const dateObject = getDateFromStringOrThrow(date, "parsing holiday text");
+
+      const holiday = holidays.find((h) => h.name == currentHoliday);
+      holiday?.days.push(getDateOnlyMarkdownString(dateObject));
+    }
+  });
+
+  return holidays;
+};
+
+export const holidaysToString = (
+  holidays: {
+    name: string;
+    days: string[];
+  }[]
+) => {
+  const entries = holidays.map((holiday) => {
+    const title = holiday.name + ":\n";
+    const days = holiday.days.map((d) => `- ${d}\n`);
+    return title + days.join("");
+  });
+
+  return entries.join("");
+};