import { __ } from '@wordpress/i18n';
import { type AnyColor, colord } from 'colord';
import type { Attributes } from '../../../types';
import { findBackgroundColor, findTextColor } from '../../../util/colors';

export const RoundCenter = (
	attributes: Partial<Attributes> & { context?: string },
) => {
	const {
		bgColor,
		textColor,
		seeMoreString,
		context,
		footerType,
		seeMoreCollapse,
		seeMoreCollapseString,
	} = attributes;
	let bgTop, color, bg;
	if (bgColor?.startsWith('var(')) {
		bgTop = findBackgroundColor(attributes) ?? bgColor;
		bg = bgTop;
		color = findTextColor(attributes) ?? textColor;
	} else {
		const bgC = colord(bgColor as AnyColor);
		const textC = colord(textColor as AnyColor);
		color = bgC.isDark()
			? textC.lighten(0.15).toHex()
			: textC.darken(0.15).toHex();
		bg = bgC.isDark() ? bgC.lighten(0.1).toHex() : bgC.darken(0.1).toHex();
		bgTop = bgC.toHex();
	}
	const hasFooter = footerType !== 'none';
	const inEditor = context === 'editor';
	const seeMore = seeMoreString || __('Expand', 'code-block-pro');

	return (
		<div
			className="cbp-see-more-container"
			// If the user opted to collapse, store strings
			data-see-more-collapse-string={
				seeMoreCollapse
					? seeMoreCollapseString || __('Collapse', 'code-block-pro')
					: undefined
			}
			data-see-more-string={seeMoreCollapse ? seeMore : undefined}
			style={{
				display: context === 'front' ? 'none' : 'flex',
				flexDirection: 'column',
				alignItems: 'center',
				width: '100%',
				fontSize: '12px',
				lineHeight: '1',
				position: 'relative',
				paddingTop: hasFooter ? 0 : '4px',
				marginBottom: hasFooter || inEditor ? 0 : '-16px',
				height: hasFooter && !inEditor ? 0 : '32px',
			}}
		>
			{/* bg 50% height at top */}
			{!hasFooter && (
				<div
					style={{
						backgroundColor: bgTop,
						height: '50%',
						position: 'absolute',
						top: 0,
						left: 0,
						right: 0,
					}}
					aria-hidden="true"
				/>
			)}
			{/* span is used to avoid theme button styling */}
			<span
				role={inEditor ? 'presentation' : 'button'}
				tabIndex={inEditor ? -1 : 0}
				className="cbp-see-more-simple-btn cbp-see-more-simple-btn-hover"
				style={{
					color,
					backgroundColor: bg,
					padding: '6px 14px',
					cursor: 'default',
					position: 'relative',
					borderRadius: '6px',
					transform: hasFooter ? 'translateY(-50%)' : undefined,
				}}
			>
				{seeMore}
			</span>
		</div>
	);
};