<script lang="ts">
	import type { HTMLAnchorAttributes, HTMLButtonAttributes } from 'svelte/elements';
	import { type VariantProps, cva } from 'class-variance-authority';

	import { cn } from '$lib/utils';

	export const buttonVariants = cva(
		'inline-flex items-center justify-center rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50',
		{
			variants: {
				variant: {
					default: 'bg-primary text-primary-foreground hover:bg-primary/90',
					destructive: 'bg-destructive text-destructive-foreground hover:bg-destructive/90',
					outline: 'border border-input hover:bg-accent hover:text-accent-foreground',
					secondary: 'bg-secondary text-secondary-foreground hover:bg-secondary/80',
					ghost: 'hover:bg-accent hover:text-accent-foreground',
					link: 'underline-offset-4 hover:underline text-primary',
					brand: 'bg-gradient-to-tl from-brand to-brand-accent transition-opacity hover:opacity-90'
				},
				size: {
					default: 'h-10 py-2 px-4',
					sm: 'h-9 px-3 rounded-md',
					lg: 'h-11 px-8 rounded-md'
				}
			},
			defaultVariants: {
				variant: 'default',
				size: 'default'
			}
		}
	);

	let className: string | undefined | null = undefined;

	export { className as class };
	export let href: HTMLAnchorAttributes['href'] = undefined;
	export let type: HTMLButtonAttributes['type'] = undefined;
	export let variant: VariantProps<typeof buttonVariants>['variant'] = 'default';
	export let size: VariantProps<typeof buttonVariants>['size'] = 'default';

	type Props = {
		class?: string | null;
		variant?: VariantProps<typeof buttonVariants>['variant'];
		size?: VariantProps<typeof buttonVariants>['size'];
	};

	interface AnchorElement extends Props, HTMLAnchorAttributes {
		href?: HTMLAnchorAttributes['href'];
		type?: never;
	}

	interface ButtonElement extends Props, HTMLButtonAttributes {
		type?: HTMLButtonAttributes['type'];
		href?: never;
	}

	type $$Props = AnchorElement | ButtonElement;
</script>

<svelte:element
	this={href ? 'a' : 'button'}
	type={href ? undefined : type}
	{href}
	class={cn(buttonVariants({ variant, size, className }))}
	{...$$restProps}
	on:click
	on:change
	on:keydown
	on:keyup
	on:mouseenter
	on:mouseleave
	role="button"
	tabindex="0"
>
	<slot />
</svelte:element>
