"use client"

import React, { useEffect, useState } from "react"
import { atom, useAtom } from "jotai"
import { atomWithStorage } from "jotai/utils"
import {
	AlertDialog,
	AlertDialogAction,
	AlertDialogCancel,
	AlertDialogContent,
	AlertDialogDescription,
	AlertDialogFooter,
	AlertDialogHeader,
	AlertDialogTitle
} from "@/components/ui/alert-dialog"
import { isExistingUser } from "@/app/actions"
import { usePathname } from "next/navigation"

const hasVisitedAtom = atomWithStorage("hasVisitedLearnAnything", false)
const isDialogOpenAtom = atom(true)

export function LearnAnythingOnboarding() {
	const pathname = usePathname()
	const [hasVisited, setHasVisited] = useAtom(hasVisitedAtom)
	const [isOpen, setIsOpen] = useAtom(isDialogOpenAtom)
	const [isFetching, setIsFetching] = useState(true)
	const [isExisting, setIsExisting] = useState(false)

	useEffect(() => {
		const loadUser = async () => {
			try {
				const existingUser = await isExistingUser()
				setIsExisting(existingUser)
				setIsOpen(true)
			} catch (error) {
				console.error("Error loading user:", error)
			} finally {
				setIsFetching(false)
			}
		}

		if (!hasVisited && pathname !== "/") {
			loadUser()
		}
	}, [hasVisited, pathname, setIsOpen])

	const handleClose = () => {
		setIsOpen(false)
		setHasVisited(true)
	}

	if (hasVisited || isFetching) return null

	return (
		<AlertDialog open={isOpen} onOpenChange={setIsOpen}>
			<AlertDialogContent className="max-w-xl">
				<AlertDialogHeader>
					<AlertDialogTitle>
						<h1 className="text-2xl font-bold">Welcome to Learn Anything!</h1>
					</AlertDialogTitle>
				</AlertDialogHeader>

				<AlertDialogDescription className="text-foreground/70 space-y-4 text-base leading-5">
					{isExisting && (
						<>
							<p className="font-medium">Existing Customer Notice</p>
							<p>
								We noticed you are an existing Learn Anything customer. We sincerely apologize for any broken experience
								you may have encountered on the old website. We&apos;ve been working hard on this new version, which
								addresses previous issues and offers more features. As an early customer, you&apos;re locked in at the{" "}
								<strong>$3</strong> price for our upcoming pro version. Thank you for your support!
							</p>
						</>
					)}
					<p>
						Learn Anything is a learning platform that organizes knowledge in a social way. You can create pages, add
						links, track learning status of any topic, and more things in the future.
					</p>
					<p>Try do these quick onboarding steps to get a feel for the product:</p>
					<ul className="list-inside list-disc">
						<li>Create your first page</li>
						<li>Add a link to a resource</li>
						<li>Update your learning status on a topic</li>
					</ul>
					<p>
						If you have any questions, don&apos;t hesitate to reach out. Click on question mark button in the bottom
						right corner and enter your message.
					</p>
				</AlertDialogDescription>

				<AlertDialogFooter className="mt-4">
					<AlertDialogCancel onClick={handleClose}>Close</AlertDialogCancel>
					<AlertDialogAction onClick={handleClose}>Get Started</AlertDialogAction>
				</AlertDialogFooter>
			</AlertDialogContent>
		</AlertDialog>
	)
}

export default LearnAnythingOnboarding