♻️(react) extract duplicated utility functions and types

DateRangePicker and DatePicker would share quite a lot of
common logics. Make sure the code elements are factorised
easily reusable in each components.

packages/react/src/components/Forms/DatePicker/utils.ts

@@ -0,0 +1,48 @@
+import {
+  CalendarDate,
+  parseAbsoluteToLocal,
+  toCalendarDate,
+} from "@internationalized/date";
+import { DateRange } from "react-aria";
+import {
+  StringOrDate,
+  StringsOrDateRange,
+} from ":/components/Forms/DatePicker/types";
+import { DatePickerAuxSubProps } from ":/components/Forms/DatePicker/DatePickerAux";
+
+export const parseCalendarDate = (
+  rawDate: StringOrDate | undefined
+): undefined | CalendarDate => {
+  if (!rawDate) {
+    return undefined;
+  }
+  try {
+    const ISODateString = new Date(rawDate).toISOString();
+    return toCalendarDate(parseAbsoluteToLocal(ISODateString));
+  } catch (e) {
+    throw new Error(
+      "Invalid date format when initializing props on DatePicker component"
+    );
+  }
+};
+
+export const parseRangeCalendarDate = (
+  rawRange: StringsOrDateRange | undefined
+): DateRange | undefined => {
+  if (!rawRange || !rawRange[0] || !rawRange[1]) {
+    return undefined;
+  }
+  return {
+    start: parseCalendarDate(rawRange[0])!,
+    end: parseCalendarDate(rawRange[1])!,
+  };
+};
+
+export const getDefaultPickerOptions = (props: DatePickerAuxSubProps): any => ({
+  minValue: parseCalendarDate(props.minValue),
+  maxValue: parseCalendarDate(props.maxValue),
+  shouldCloseOnSelect: true,
+  granularity: "day",
+  isDisabled: props.disabled,
+  label: props.label,
+});