Add new Datepicker component

app/soapbox/components/ui/datepicker/__tests__/datepicker.test.tsx

@@ -0,0 +1,83 @@
+import userEvent from '@testing-library/user-event';
+import React from 'react';
+
+import { queryAllByRole, render, screen } from '../../../../jest/test-helpers';
+import Datepicker from '../datepicker';
+
+describe('<Datepicker />', () => {
+  it('defaults to the current date', () => {
+    const handler = jest.fn();
+    render(<Datepicker onChange={handler} />);
+    const today = new Date();
+
+    expect(screen.getByTestId('datepicker-month')).toHaveValue(String(today.getMonth()));
+    expect(screen.getByTestId('datepicker-day')).toHaveValue(String(today.getDate()));
+    expect(screen.getByTestId('datepicker-year')).toHaveValue(String(today.getFullYear()));
+  });
+
+  it('changes number of days based on selected month and year', async() => {
+    const handler = jest.fn();
+    render(<Datepicker onChange={handler} />);
+
+    await userEvent.selectOptions(
+      screen.getByTestId('datepicker-month'),
+      screen.getByRole('option', { name: 'February' }),
+    );
+
+    await userEvent.selectOptions(
+      screen.getByTestId('datepicker-year'),
+      screen.getByRole('option', { name: '2020' }),
+    );
+
+    let daySelect: HTMLElement;
+    daySelect = document.querySelector('[data-testid="datepicker-day"]');
+    expect(queryAllByRole(daySelect, 'option')).toHaveLength(29);
+
+    await userEvent.selectOptions(
+      screen.getByTestId('datepicker-year'),
+      screen.getByRole('option', { name: '2021' }),
+    );
+
+    daySelect = document.querySelector('[data-testid="datepicker-day"]') as HTMLElement;
+    expect(queryAllByRole(daySelect, 'option')).toHaveLength(28);
+  });
+
+  it('ranges from the current year to 120 years ago', () => {
+    const handler = jest.fn();
+    render(<Datepicker onChange={handler} />);
+    const today = new Date();
+
+    const yearSelect = document.querySelector('[data-testid="datepicker-year"]') as HTMLElement;
+    expect(queryAllByRole(yearSelect, 'option')).toHaveLength(121);
+    expect(queryAllByRole(yearSelect, 'option')[0]).toHaveValue(String(today.getFullYear()));
+    expect(queryAllByRole(yearSelect, 'option')[120]).toHaveValue(String(today.getFullYear() - 120));
+  });
+
+  it('calls the onChange function when the inputs change', async() => {
+    const handler = jest.fn();
+    render(<Datepicker onChange={handler} />);
+
+    expect(handler.mock.calls.length).toEqual(1);
+
+    await userEvent.selectOptions(
+      screen.getByTestId('datepicker-month'),
+      screen.getByRole('option', { name: 'February' }),
+    );
+
+    expect(handler.mock.calls.length).toEqual(2);
+
+    await userEvent.selectOptions(
+      screen.getByTestId('datepicker-year'),
+      screen.getByRole('option', { name: '2020' }),
+    );
+
+    expect(handler.mock.calls.length).toEqual(3);
+
+    await userEvent.selectOptions(
+      screen.getByTestId('datepicker-day'),
+      screen.getByRole('option', { name: '5' }),
+    );
+
+    expect(handler.mock.calls.length).toEqual(4);
+  });
+});

app/soapbox/components/ui/datepicker/datepicker.tsx

@@ -0,0 +1,94 @@
+import React, { useEffect, useMemo, useState } from 'react';
+import { FormattedMessage, useIntl } from 'react-intl';
+
+import Select from '../select/select';
+import Stack from '../stack/stack';
+import Text from '../text/text';
+
+const getDaysInMonth = (month: number, year: number) => new Date(year, month + 1, 0).getDate();
+const currentYear = new Date().getFullYear();
+
+interface IDatepicker {
+  onChange(date: Date): void
+}
+
+/**
+ * Datepicker that allows a user to select month, day, and year.
+ */
+const Datepicker = ({ onChange }: IDatepicker) => {
+  const intl = useIntl();
+
+  const [month, setMonth] = useState<number>(new Date().getMonth());
+  const [day, setDay] = useState<number>(new Date().getDate());
+  const [year, setYear] = useState<number>(2022);
+
+  const numberOfDays = useMemo(() => {
+    return getDaysInMonth(month, year);
+  }, [month, year]);
+
+  useEffect(() => {
+    onChange(new Date(year, month, day));
+  }, [month, day, year]);
+
+  return (
+    <div className='grid grid-cols-1 gap-y-2 gap-x-2 sm:grid-cols-3'>
+      <div className='sm:col-span-1'>
+        <Stack>
+          <Text size='sm' weight='medium' theme='muted'>
+            <FormattedMessage id='datepicker.month' defaultMessage='Month' />
+          </Text>
+
+          <Select
+            value={month}
+            onChange={(event) => setMonth(Number(event.target.value))}
+            data-testid='datepicker-month'
+          >
+            {[...Array(12)].map((_, idx) => (
+              <option key={idx} value={idx}>
+                {intl.formatDate(new Date(year, idx, 1), { month: 'long' })}
+              </option>
+            ))}
+          </Select>
+        </Stack>
+      </div>
+
+      <div className='sm:col-span-1'>
+        <Stack>
+          <Text size='sm' weight='medium' theme='muted'>
+            <FormattedMessage id='datepicker.day' defaultMessage='Day' />
+          </Text>
+
+          <Select
+            value={day}
+            onChange={(event) => setDay(Number(event.target.value))}
+            data-testid='datepicker-day'
+          >
+            {[...Array(numberOfDays)].map((_, idx) => (
+              <option key={idx} value={idx + 1}>{idx + 1}</option>
+            ))}
+          </Select>
+        </Stack>
+      </div>
+
+      <div className='sm:col-span-1'>
+        <Stack>
+          <Text size='sm' weight='medium' theme='muted'>
+            <FormattedMessage id='datepicker.year' defaultMessage='Year' />
+          </Text>
+
+          <Select
+            value={year}
+            onChange={(event) => setYear(Number(event.target.value))}
+            data-testid='datepicker-year'
+          >
+            {[...Array(121)].map((_, idx) => (
+              <option key={idx} value={currentYear - idx}>{currentYear - idx}</option>
+            ))}
+          </Select>
+        </Stack>
+      </div>
+    </div>
+  );
+};
+
+export default Datepicker;

app/soapbox/components/ui/index.ts

@@ -4,6 +4,7 @@ export { Card, CardBody, CardHeader, CardTitle } from './card/card';
 export { default as Checkbox } from './checkbox/checkbox';
 export { default as Column } from './column/column';
 export { default as Counter } from './counter/counter';
+export { default as Datepicker } from './datepicker/datepicker';
 export { default as Emoji } from './emoji/emoji';
 export { default as EmojiSelector } from './emoji-selector/emoji-selector';
 export { default as FileInput } from './file-input/file-input';

app/soapbox/locales/en.json

@@ -344,6 +344,9 @@
   "crypto_donate_panel.actions.view": "Click to see {count} {count, plural, one {wallet} other {wallets}}",
   "crypto_donate_panel.heading": "Donate Cryptocurrency",
   "crypto_donate_panel.intro.message": "{siteTitle} accepts cryptocurrency donations to fund our service. Thank you for your support!",
+  "datepicker.month": "Month",
+  "datepicker.day": "Day",
+  "datepicker.year": "Year",
   "datepicker.hint": "Scheduled to post at…",
   "datepicker.next_month": "Next month",
   "datepicker.next_year": "Next year",