"use client";
import { cva } from "class-variance-authority";
import { buttonVariants } from "fumadocs-ui/components/ui/button";
import {
	Popover,
	PopoverContent,
	PopoverTrigger,
} from "fumadocs-ui/components/ui/popover";
import { useCopyButton } from "fumadocs-ui/utils/use-copy-button";
import {
	Check,
	ChevronDown,
	Copy,
	ExternalLinkIcon,
	MessageCircleIcon,
	SearchIcon,
} from "lucide-react";
import { useMemo, useState } from "react";
import { cn } from "../../../lib/cn";

const cache = new Map<string, string>();

export function LLMCopyButton({
	/**
	 * A URL to fetch the raw Markdown/MDX content of page
	 */
	markdownUrl,
}: {
	markdownUrl: string;
}) {
	const [isLoading, setLoading] = useState(false);
	const [checked, onClick] = useCopyButton(async () => {
		const cached = cache.get(markdownUrl);
		if (cached) return navigator.clipboard.writeText(cached);

		setLoading(true);

		try {
			await navigator.clipboard.write([
				new ClipboardItem({
					"text/plain": fetch(markdownUrl).then(async (res) => {
						const content = await res.text();
						cache.set(markdownUrl, content);

						return content;
					}),
				}),
			]);
		} finally {
			setLoading(false);
		}
	});

	return (
		<button
			type="button"
			disabled={isLoading}
			className={cn(
				buttonVariants({
					color: "secondary",
					size: "sm",
					className: "gap-2 [&_svg]:size-3.5 [&_svg]:text-fd-muted-foreground",
				}),
			)}
			onClick={onClick}
		>
			{checked ? <Check /> : <Copy />}
			Copy Markdown
		</button>
	);
}

const optionVariants = cva(
	"inline-flex items-center gap-2 rounded-lg p-2 text-sm hover:bg-fd-accent hover:text-fd-accent-foreground [&_svg]:size-4",
);

export function ViewOptions({
	markdownUrl,
	githubUrl,
}: {
	/**
	 * A URL to the raw Markdown/MDX content of page
	 */
	markdownUrl: string;

	/**
	 * Source file URL on GitHub
	 */
	githubUrl: string;
}) {
	const items = useMemo(() => {
		const fullMarkdownUrl =
			typeof window !== "undefined"
				? new URL(markdownUrl, window.location.origin)
				: "loading";
		const q = `Read ${fullMarkdownUrl}, I want to ask questions about it.`;

		return [
			{
				title: "Open in GitHub",
				href: githubUrl,
				icon: (
					<svg fill="currentColor" role="img" viewBox="0 0 24 24">
						<title>GitHub</title>
						<path d="M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12" />
					</svg>
				),
			},
			{
				title: "Open in ChatGPT",
				href: `https://chatgpt.com/?${new URLSearchParams({
					hints: "search",
					q,
				})}`,
				icon: (
					<svg
						role="img"
						viewBox="0 0 24 24"
						fill="currentColor"
						xmlns="http://www.w3.org/2000/svg"
					>
						<title>OpenAI</title>
						<path d="M22.2819 9.8211a5.9847 5.9847 0 0 0-.5157-4.9108 6.0462 6.0462 0 0 0-6.5098-2.9A6.0651 6.0651 0 0 0 4.9807 4.1818a5.9847 5.9847 0 0 0-3.9977 2.9 6.0462 6.0462 0 0 0 .7427 7.0966 5.98 5.98 0 0 0 .511 4.9107 6.051 6.051 0 0 0 6.5146 2.9001A5.9847 5.9847 0 0 0 13.2599 24a6.0557 6.0557 0 0 0 5.7718-4.2058 5.9894 5.9894 0 0 0 3.9977-2.9001 6.0557 6.0557 0 0 0-.7475-7.0729zm-9.022 12.6081a4.4755 4.4755 0 0 1-2.8764-1.0408l.1419-.0804 4.7783-2.7582a.7948.7948 0 0 0 .3927-.6813v-6.7369l2.02 1.1686a.071.071 0 0 1 .038.052v5.5826a4.504 4.504 0 0 1-4.4945 4.4944zm-9.6607-4.1254a4.4708 4.4708 0 0 1-.5346-3.0137l.142.0852 4.783 2.7582a.7712.7712 0 0 0 .7806 0l5.8428-3.3685v2.3324a.0804.0804 0 0 1-.0332.0615L9.74 19.9502a4.4992 4.4992 0 0 1-6.1408-1.6464zM2.3408 7.8956a4.485 4.485 0 0 1 2.3655-1.9728V11.6a.7664.7664 0 0 0 .3879.6765l5.8144 3.3543-2.0201 1.1685a.0757.0757 0 0 1-.071 0l-4.8303-2.7865A4.504 4.504 0 0 1 2.3408 7.872zm16.5963 3.8558L13.1038 8.364 15.1192 7.2a.0757.0757 0 0 1 .071 0l4.8303 2.7913a4.4944 4.4944 0 0 1-.6765 8.1042v-5.6772a.79.79 0 0 0-.407-.667zm2.0107-3.0231l-.142-.0852-4.7735-2.7818a.7759.7759 0 0 0-.7854 0L9.409 9.2297V6.8974a.0662.0662 0 0 1 .0284-.0615l4.8303-2.7866a4.4992 4.4992 0 0 1 6.6802 4.66zM8.3065 12.863l-2.02-1.1638a.0804.0804 0 0 1-.038-.0567V6.0742a4.4992 4.4992 0 0 1 7.3757-3.4537l-.142.0805L8.704 5.459a.7948.7948 0 0 0-.3927.6813zm1.0976-2.3654l2.602-1.4998 2.6069 1.4998v2.9994l-2.5974 1.4997-2.6067-1.4997Z" />
					</svg>
				),
			},
			{
				title: "Open in Claude",
				href: `https://claude.ai/new?${new URLSearchParams({
					q,
				})}`,
				icon: (
					<svg
						fill="currentColor"
						role="img"
						viewBox="0 0 24 24"
						xmlns="http://www.w3.org/2000/svg"
					>
						<title>Anthropic</title>
						<path d="M17.3041 3.541h-3.6718l6.696 16.918H24Zm-10.6082 0L0 20.459h3.7442l1.3693-3.5527h7.0052l1.3693 3.5528h3.7442L10.5363 3.5409Zm-.3712 10.2232 2.2914-5.9456 2.2914 5.9456Z" />
					</svg>
				),
			},
			{
				title: "Open in T3 Chat",
				href: `https://t3.chat/new?${new URLSearchParams({
					q,
				})}`,
				icon: <MessageCircleIcon />,
			},
			{
				title: "Open in Scira AI",
				href: `https://scira.ai/?${new URLSearchParams({
					q,
				})}`,
				icon: <SearchIcon />,
			},
		];
	}, [githubUrl, markdownUrl]);

	return (
		<Popover>
			<PopoverTrigger
				className={cn(
					buttonVariants({
						color: "secondary",
						size: "sm",
						className: "gap-2",
					}),
				)}
			>
				Open
				<ChevronDown className="size-3.5 text-fd-muted-foreground" />
			</PopoverTrigger>
			<PopoverContent className="flex flex-col overflow-auto">
				{items.map((item) => (
					<a
						key={item.href}
						href={item.href}
						rel="noreferrer noopener"
						target="_blank"
						className={cn(optionVariants())}
					>
						{item.icon}
						{item.title}
						<ExternalLinkIcon className="ms-auto size-3.5 text-fd-muted-foreground" />
					</a>
				))}
			</PopoverContent>
		</Popover>
	);
}