npm package: @inter-digital/react-native-ui-datepicker
Description: Customizable date picker for React Native
Author: hendra
Latest version: 3.0.7-patch-4

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</p>

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DateTimePicker component for React Native that allows you to create a customizable datetime picker. The component uses extensive set of props that allows you to customizing the calendar based on your own UI design. Please visit [demo](https://farhoudshapouran.github.io/react-native-ui-datepicker/).

## Features

- 📅 Supports different selection modes: single, range, and multiple days.
- 🌿 Unstyled by default, every component is minimally styled and fully customizable.
- 🛠️ Extensive set of props for fine-tuned calendar customization.
- 🎨 Fully compatible with [NativeWind](https://www.nativewind.dev/).
- 🌎 Easily localizable into any language.
- 🕗 Handles different time zones seamlessly.
- ⚙️ Customizable components allow extending rendered elements. 
- ⚡ Fast & lightweight, only re-renders the elements that actually change.

## Installation

```sh
npm install react-native-ui-datepicker
```

Or

```sh
yarn add react-native-ui-datepicker
```

## Basic Usage

1. Import the component and default styles or classNames from  `react-native-ui-datepicker`.
2. Choose a selection mode using the `mode` prop. The available modes are: `single`, `range`, and `multiple`.

```jsx
import { useState } from  'react';
import DateTimePicker, { DateType, useDefaultStyles } from 'react-native-ui-datepicker';

export function Calendar() {
  const defaultStyles = useDefaultStyles();
  const [selected, setSelected] = useState<DateType>();

  return (
    <DateTimePicker
      mode="single"
      date={selected}
      onChange={({ date }) =>  setSelected(date)}
      styles={defaultStyles}
    />
  );
}
```

## Calendar Base Props

| Name               | Type                              | Description                                        |
| ------------------ | --------------------------------- | -------------------------------------------------- |
| `mode`               | `"single"` \| `"range"` \| `"multiple"`   | Defines the DatePicker mode.                       |
| `minDate`            | `DateType`                        | Defines the minimum selectable date in the DatePicker.   |
| `maxDate`            | `DateType`                        | Defines the maximum selectable date in the DatePicker.   |
| `enabledDates`   | `DateType[]` \| `(date: DateType) => boolean` | Defines an array of enabled dates or a function that returns `true` for enabled dates. It takes precedence over disabledDates. |
| `disabledDates`      | `DateType[]` \| `(date: DateType) => boolean` | Defines an array of disabled dates or a function that returns `true` for disabled dates.  |
| `firstDayOfWeek`     | `number`                          | Defines the first day of the week: 0-6 (0 = Sunday, 6 = Saturday). |
| `initialView`        | `"day"` \| `"month"` \| `"year"` \| `"time"` | Defines the initial view of the DatePicker |
| `month`              | `number`                              | Defines the currently selected month.     |
| `year`              | `number`                              | Defines the currently selected year.      |
| `onMonthChange`      | `(month: number) => void`             | Callback function triggered when the current month changes.   |
| `onYearChange`       | `(year: number) => void`              | Callback function triggered when the current year changes.    |

## Example

```jsx
export function Calendar() {
  let today = new Date();
  const [selected, setSelected] = useState<DateType>();

  return (
    <DateTimePicker
      mode="single"
      date={selected}
      onChange={({ date }) =>  setSelected(date)}
      minDate={today} // Set the minimum selectable date to today
      enabledDates={(date) => dayjs(date).day() === 1} // Enable only Mondays (takes precedence over disabledDates)
      disabledDates={(date) => [0, 6].includes(dayjs(date).day())} // Disable weekends
    />
  );
}
```

<p align="center">
<img src="/.github/images/modes-screenshot.png" />
</p>

## Single Mode props

| Name         | Type               | Description                                                   |
| ------------ | ------------------ | ------------------------------------------------------------- |
| `date`       | `DateType`         | Specifies the currently selected date.                        |
| `onChange`   | `({date}) => void` | Callback function triggered when the date change.             |
| `timePicker` | `boolean`          | Whether to enable the time picker.                            |
| `use12Hours` | `boolean`          | Whether to use a 12-hour format (AM/PM) in the time picker.   |

## Range Mode props

| Name        | Type                             | Description                                                |
| ----------- | -------------------------------- | -----------------------------------------------------------|
| `startDate` | `DateType`                       | Defines the start date for a range selection.              |
| `endDate`   | `DateType`                       | Defines the end date for a range selection.                |
| `onChange`  | `({startDate, endDate}) => void` | Callback function triggered when the start and end change. |
| `min`       | `number`                         | Defines the minimum allowed nights.                        |
| `max`       | `number`                         | Defines the maximum allowed nights.                        |

## Multiple Mode props

| Name              | Type                | Description                                                 |
| ----------------- | ------------------- | ----------------------------------------------------------- |
| `dates`           | `DateType[]`        | Defines the selected dates for multiple date selection.     |
| `onChange`        | `({dates}) => void` | Callback function triggered when the dates change.          |
| `max`             | `number`            | Defines the maximum allowed days to select.                 |
| `multiRangeMode`  | `boolean`           | Whether to display selecting multiple dates in a range row. |

![react-native-ui-datepicker-styles](https://user-images.githubusercontent.com/7857656/227260476-30ee8c25-f809-4dcf-bccf-cd1ffab8795a.jpg)

## Customization

| Name                 | Type                                | Description                                               |
| -------------------- | ----------------------------------- | --------------------------------------------------------- |
| `showOutsideDays`    | `boolean`                           | Whether to show the days of the previous and next months. |
| `navigationPosition` | `"around"` \| `"right"` \| `"left"` | Defines the position of the navigation.                   |
| `containerHeight`    | `number`                            | Defines the height of the calendar days container.        |
| `weekdaysHeight`     | `number`                            | Defines the height of the weekdays row.                   |
| `weekdaysFormat`     | `"short"` \| `"full"` \| `"min"`    | Defines the format for displaying weekdays.               |
| `monthsFormat`       | `"short"` \| `"full"`               | Defines the format for displaying months.                 |
| `monthCaptionFormat` | `"short"` \| `"full"`               | Defines the format for displaying the month caption.      |
| `hideHeader`         | `boolean`                           | Whether to hide the calendar header.                      |
| `hideWeekdays`       | `boolean`                           | Whether to hide the weekdays row.                         |
| `disableMonthPicker` | `boolean`                           | Whether to disable the month picker.                      |
| `disableYearPicker`  | `boolean`                           | Whether to disable the year picker.                       |

## Styling

DateTimePicker comes with a minimal style, making it easy to extend and customize according to your needs.

| Name              | Type            | Description                                                     |
| ----------------- | --------------- | --------------------------------------------------------------- |
| `style`           | `ViewStyle`     | style for the calendar container.                               |
| `className`       | `string`        | className for the calendar container.                           |
| `styles`          | `Styles`        | Custom styles for specific components inside the calendar.      |
| `classNames`      | `ClassNames`    | Custom classNames for specific components inside the calendar.  |

## Custom Styles

Use the `styles` prop to apply custom styles instead of the default ones.

These styles are mapped to the values of the [UI Theme](https://github.com/farhoudshapouran/react-native-ui-datepicker/blob/main/src/ui.ts) enums.

```jsx
import DateTimePicker, { useDefaultStyles } from 'react-native-ui-datepicker';

export function Calendar() {
  const defaultStyles = useDefaultStyles();

  return (
    <DateTimePicker
      styles={{
        ...defaultStyles,
        today: { borderColor: 'blue', borderWidth: 1 }, // Add a border to today's date
        selected: { backgroundColor: 'blue' }, // Highlight the selected day
        selected_label: { color: 'white' }, // Highlight the selected day label
      }}
    />
  );
}
```

## NativeWind (Tailwind CSS)

If you're using [NativeWind](https://www.nativewind.dev/) in your project, apply Tailwind CSS class names to style the calendar.
Use the `classNames` prop to apply custom class names instead of the default ones.

These class names are mapped to the values of the [UI Theme](https://github.com/farhoudshapouran/react-native-ui-datepicker/blob/main/src/ui.ts) enums.

```jsx
import DateTimePicker, { useDefaultClassNames } from 'react-native-ui-datepicker';

export function Calendar() {
  const defaultClassNames = useDefaultClassNames();

  return (
    <DateTimePicker
      classNames={{
        ...defaultClassNames,
        today: 'border-amber-500', // Add a border to today's date
        selected: 'bg-amber-500 border-amber-500', // Highlight the selected day
        selected_label: "text-white", // Highlight the selected day label
        day: `${defaultClassNames.day} hover:bg-amber-100`, // Change background color on hover
        disabled: 'opacity-50', // Make disabled dates appear more faded
      }}
    />
  );
}
```

## Time Zones

Use the `timeZone` prop to set the time zone for the calendar.

| Name           | Type               | Description                                |
| -------------- | ------------------ | ------------------------------------------ |
| `timeZone`     | `string`           | Defines the timezone for the DatePicker.   |

The time zone can be set using either an [IANA time zone](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) identifier or a UTC offset.

```jsx
<DateTimePicker timeZone="UTC" /> // Use Coordinated Universal Time
<DateTimePicker timeZone="Asia/Tokyo" /> //  Use Japan Standard Time (JST)
```

## Localization

DateTimePicker offers multiple options to customize the calendar for different languages.

| Name         | Type                                 | Description                                                  |
| ------------ | ------------------------------------ | ------------------------------------------------------------ |
| `locale`     | `string`                             | Defines the locale of the DateTimePicker. Default is `en`    |
| `numerals`   | [Numerals](#list-of-numeral-systems) | Specifies the numeral system to use (e.g., Arabic, Persian). |

## Custom Components

Use the `components` prop to replace the default rendered elements with your own custom components.

| Name            | Type                      | Description                                              |
| --------------- | ------------------------- | -------------------------------------------------------- |
| `components`    | `CalendarComponents`      | Custom components to replace default calendar elements.  |


## Implementing a Custom Component

Pass the custom components to the `components` prop. Refer to the list below for available [custom components](#list-of-custom-components).

```jsx
import DateTimePicker, {
  CalendarDay,
  CalendarMonth,
  CalendarComponents,
} from 'react-native-ui-datepicker';

const components: CalendarComponents = {
  Day: (day: CalendarDay) => <YourCustomDay day={day} />,
  Month: (month: CalendarMonth) => <YourCustomMonth month={month} />
  // etc
};

export function Calendar() {
  return (
      <DateTimePicker
        components={components}
      />
  );
}
```

## List of Custom Components

| Name       | Type                                   | Description                                            |
| ---------- | -------------------------------------- | ------------------------------------------------------ |
| `Day`      | `(day: CalendarDay) => ReactNode`      | The component containing the day in the days grid.     |
| `Month`    | `(month: CalendarMonth) => ReactNode`  | The component containing the month in the months grid. |
| `Year`     | `(year: CalendarYear) => ReactNode`    | The component containing the year in the years grid.   |
| `Weekday`  | `(weekday: CalendarWeek) => ReactNode` | The component containing the weekday in the header.    |
| `IconPrev` | `ReactNode`                            | The previous month/year button icon in the header.     |
| `IconNext` | `ReactNode`                            | The next month button/year icon in the header.         |

## Type Definitions

```typescript
type DateType = string | number | Dayjs | Date | null | undefined;

type CalendarMode = 'single' | 'range' | 'multiple';

type NavigationPosition = 'around' | 'right' | 'left';

type WeekdayFormat = 'min' | 'short' | 'full';

type MonthFormat = 'short' | 'full';

type CalendarDay = {
  number: number;
  text: string;
  date: string;
  isDisabled: boolean;
  isCurrentMonth: boolean;
  dayOfMonth?: number;
  isToday: boolean;
  isSelected: boolean;
  inRange: boolean;
  leftCrop: boolean;
  rightCrop: boolean;
  isStartOfWeek: boolean;
  isEndOfWeek: boolean;
  isCrop: boolean;
  inMiddle: boolean;
  rangeStart: boolean;
  rangeEnd: boolean;
};

type CalendarWeek = {
  index: number;
  name: {
    full: string;
    short: string;
    min: string;
  };
};

type CalendarMonth = {
  index: number;
  name: {
    full: string;
    short: string;
  };
  isSelected: boolean;
};

type CalendarYear = {
  number: number;
  text: string;
  isSelected: boolean;
  isActivated: boolean;
};
```

## List of Numeral Systems

| Name       | Description                                   |
| ---------- | --------------------------------------------- |
| `latn`     | Western Latin.                                |
| `arab`     | Standard Arabic.                              |
| `arabext`  | Eastern Arabic-Indic (Persian).               |
| `deva`     | Devanagari, used in Indian languages.         |
| `beng`     | Bengali, used in Bengali and Assamese.        |
| `guru`     | Gurmukhi, used in Punjab, India.              |
| `gujr`     | Gujarati, used in Gujarat, India.             |
| `orya`     | Odia, used in Odisha, India.                  |
| `tamldec`  | Tamil, used in Tamil-speaking regions.        |
| `telu`     | Telugu, used in Andhra Pradesh and Telangana. |
| `knda`     | Kannada, used in Karnataka, India.            |
| `mlym`     | Malayalam, used in Kerala, India.             |

<p align="center">
<img src="https://user-images.githubusercontent.com/7857656/227187674-93012672-495d-4955-b4d3-46c3d016684e.jpg" alt="react-native-ui-datepicker" />
</p>

## License

MIT. See the [LICENSE](https://github.com/farhoudshapouran/react-native-ui-datepicker/blob/main/LICENSE) file for more details.

## Contributing

Contributions are welcome! Please feel free to submit a PR.