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import { cn } from '@/lib/core';
import { ButtonProps } from '@/types/ui';
import { Icon } from '@/components/ui/icons';
/**
* Button Component
*
* A flexible, accessible button component with multiple variants and sizes.
* Built with design system tokens for consistency.
*
* Supports both legacy props (loading, disabled) and standard props
* (isLoading, isDisabled) for backward compatibility.
*
* @example
* ```tsx
* // Standard props (recommended)
* <Button variant="primary" size="md" isLoading>
* Processing...
* </Button>
*
* <Button variant="outline" leftIcon={<Icon name="plus" />} isDisabled>
* Add Item
* </Button>
*
* // Legacy props (still supported)
* <Button variant="danger" loading>
* Processing...
* </Button>
* ```
*/
export const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
(
{
variant = 'primary',
size = 'md',
fullWidth,
// Standard props
isLoading,
isDisabled,
// Legacy props
loading,
disabled,
// Common props
leftIcon,
rightIcon,
className,
children,
...props
},
ref
) => {
// Resolve loading state (prefer standard prop)
const resolvedLoading = isLoading ?? loading;
// Resolve disabled state (prefer standard prop)
const resolvedDisabled = isDisabled ?? disabled;
const baseStyles = `
inline-flex items-center justify-center gap-2
font-medium rounded-lg
transition-all duration-200
focus:outline-none focus:ring-2 focus:ring-offset-2
disabled:opacity-50 disabled:cursor-not-allowed
`;
const variantStyles = {
primary: `
bg-blue text-white
hover:bg-blue-dark hover:text-white active:bg-blue-darker
focus:ring-blue/50
`,
secondary: `
bg-gray-600 text-white
hover:bg-gray-700 active:bg-gray-800
focus:ring-gray-500/50
`,
outline: `
border-2 border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-800 text-gray-700 dark:text-gray-200
hover:bg-gray-50 dark:hover:bg-gray-700 hover:border-gray-400
active:bg-gray-100 dark:active:bg-gray-600
focus:ring-gray-500/50
`,
ghost: `
bg-transparent text-gray-700 dark:text-gray-200
hover:bg-gray-100 dark:hover:bg-gray-700 active:bg-gray-200 dark:active:bg-gray-600
focus:ring-gray-500/50
`,
danger: `
bg-red text-white
hover:bg-red-600 active:bg-red-700
focus:ring-red/50
`};
const sizeStyles = {
sm: 'px-4 py-2.5 text-sm min-h-[44px]', // WCAG 2.5 minimum touch target
md: 'px-5 py-3 text-base min-h-[44px]', // WCAG 2.5 minimum touch target
lg: 'px-6 py-3.5 text-lg min-h-[48px]' // Comfortable touch target
};
const widthStyles = fullWidth ? 'w-full' : '';
const isButtonDisabled = resolvedDisabled || resolvedLoading;
return (
<button
ref={ref}
className={cn(
baseStyles,
variantStyles[variant],
sizeStyles[size],
widthStyles,
className
)}
disabled={isButtonDisabled}
aria-disabled={isButtonDisabled || undefined}
aria-busy={resolvedLoading || undefined}
{...props}
>
{resolvedLoading ? (
<>
<Icon name="spinner" size={16} className="animate-spin" aria-hidden="true" />
<span className="sr-only">Loading</span>
<span aria-hidden="true">Loading...</span>
</>
) : (
<>
{leftIcon && <span className="inline-flex">{leftIcon}</span>}
{children}
{rightIcon && <span className="inline-flex">{rightIcon}</span>}
</>
)}
</button>
);
}
);
Button.displayName = 'Button';
export default Button;
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