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date-utils.ts
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date-utils.ts
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import { MuiPickersAdapter } from '../../models';
interface FindClosestDateParams<TDate> {
date: TDate;
disableFuture?: boolean;
disablePast?: boolean;
maxDate: TDate;
minDate: TDate;
isDateDisabled: (date: TDate) => boolean;
utils: MuiPickersAdapter<TDate>;
}
export const findClosestEnabledDate = <TDate>({
date,
disableFuture,
disablePast,
maxDate,
minDate,
isDateDisabled,
utils,
}: FindClosestDateParams<TDate>) => {
const today = utils.startOfDay(utils.date()!);
if (disablePast && utils.isBefore(minDate!, today)) {
minDate = today;
}
if (disableFuture && utils.isAfter(maxDate, today)) {
maxDate = today;
}
let forward: TDate | null = date;
let backward: TDate | null = date;
if (utils.isBefore(date, minDate)) {
forward = minDate;
backward = null;
}
if (utils.isAfter(date, maxDate)) {
if (backward) {
backward = maxDate;
}
forward = null;
}
while (forward || backward) {
if (forward && utils.isAfter(forward, maxDate)) {
forward = null;
}
if (backward && utils.isBefore(backward, minDate)) {
backward = null;
}
if (forward) {
if (!isDateDisabled(forward)) {
return forward;
}
forward = utils.addDays(forward, 1);
}
if (backward) {
if (!isDateDisabled(backward)) {
return backward;
}
backward = utils.addDays(backward, -1);
}
}
return null;
};
export const clamp = <TDate>(
utils: MuiPickersAdapter<TDate>,
value: TDate,
minDate: TDate,
maxDate: TDate,
): TDate => {
if (utils.isBefore(value, minDate)) {
return minDate;
}
if (utils.isAfter(value, maxDate)) {
return maxDate;
}
return value;
};
export const replaceInvalidDateByNull = <TDate>(
utils: MuiPickersAdapter<TDate>,
value: TDate | null,
) => (value == null || !utils.isValid(value) ? null : value);
export const applyDefaultDate = <TDate>(
utils: MuiPickersAdapter<TDate>,
value: TDate | null | undefined,
defaultValue: TDate,
): TDate => {
if (value == null || !utils.isValid(value)) {
return defaultValue;
}
return value;
};
export const areDatesEqual = <TDate>(utils: MuiPickersAdapter<TDate>, a: TDate, b: TDate) => {
if (!utils.isValid(a) && a != null && !utils.isValid(b) && b != null) {
return true;
}
return utils.isEqual(a, b);
};