demarches-normaliennes/app/javascript/components/shared/FlashMessage.tsx

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import React from 'react';
import { createPortal } from 'react-dom';
import invariant from 'tiny-invariant';
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export function FlashMessage({
message,
level,
sticky,
fixed
}: {
message: string;
level: string;
sticky?: boolean;
fixed?: boolean;
}) {
const element = document.getElementById('flash_messages');
invariant(element, 'Flash messages root element not found');
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return createPortal(
<div className="flash_message center">
<div className={flashClassName(level, sticky, fixed)}>{message}</div>
</div>,
element
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);
}
function flashClassName(level: string, sticky = false, fixed = false) {
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const className =
level == 'notice' ? ['alert', 'alert-success'] : ['alert', 'alert-danger'];
if (sticky) {
className.push('sticky');
}
if (fixed) {
className.push('alert-fixed');
}
return className.join(' ');
}