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import Moon from '@components/atoms/icons/moon';
import Sun from '@components/atoms/icons/sun';
import { type PrismTheme, usePrismTheme } from '@utils/providers/prism-theme';
import { FC } from 'react';
import { useIntl } from 'react-intl';
import RadioGroup, {
type RadioGroupCallback,
type RadioGroupCallbackProps,
type RadioGroupOption,
type RadioGroupProps,
} from './radio-group';
export type PrismThemeToggleProps = Pick<
RadioGroupProps,
'groupClassName' | 'legendClassName'
>;
/**
* PrismThemeToggle component
*
* Render a Toggle component to set code blocks theme.
*/
const PrismThemeToggle: FC<PrismThemeToggleProps> = (props) => {
const intl = useIntl();
const { theme, setTheme, resolvedTheme } = usePrismTheme();
/**
* Check if the resolved or chosen theme is dark theme.
*
* @returns {boolean} True if it is dark theme.
*/
const isDarkTheme = (prismTheme?: PrismTheme): boolean => {
if (prismTheme === 'system') return resolvedTheme === 'dark';
return prismTheme === 'dark';
};
/**
* Update the theme.
*
* @param {string} newTheme - A theme name.
*/
const updateTheme = (newTheme: string) => {
setTheme(newTheme === 'light' ? 'light' : 'dark');
};
/**
* Handle change events.
*
* @param {RadioGroupCallbackProps} props - An object with choices.
*/
const handleChange: RadioGroupCallback = ({
choices,
updateChoice,
}: RadioGroupCallbackProps) => {
if (choices.new === choices.prev) {
const newTheme = choices.new === 'light' ? 'dark' : 'light';
updateChoice(newTheme);
updateTheme(newTheme);
} else {
updateTheme(choices.new);
}
};
const themeLabel = intl.formatMessage({
defaultMessage: 'Code blocks:',
description: 'PrismThemeToggle: theme label',
id: 'ftXN+0',
});
const lightThemeLabel = intl.formatMessage({
defaultMessage: 'Light theme',
description: 'PrismThemeToggle: light theme label',
id: 'tsWh8x',
});
const darkThemeLabel = intl.formatMessage({
defaultMessage: 'Dark theme',
description: 'PrismThemeToggle: dark theme label',
id: 'og/zWL',
});
const options: RadioGroupOption[] = [
{
id: 'code-blocks-light',
label: <Sun title={lightThemeLabel} />,
name: 'code-blocks',
value: 'light',
},
{
id: 'code-blocks-dark',
label: <Moon title={darkThemeLabel} />,
name: 'code-blocks',
value: 'dark',
},
];
return (
<RadioGroup
initialChoice={isDarkTheme(theme) ? 'dark' : 'light'}
kind="toggle"
legend={themeLabel}
onChange={handleChange}
options={options}
{...props}
/>
);
};
export default PrismThemeToggle;
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