import {
	RepostNote,
	TextNote,
	useArk,
	useProfile,
	useStorage,
} from "@lume/ark";
import { ArrowLeftIcon, ArrowRightCircleIcon, LoaderIcon } from "@lume/icons";
import { NIP05 } from "@lume/ui";
import { FETCH_LIMIT, displayNpub } from "@lume/utils";
import { NDKEvent, NDKKind } from "@nostr-dev-kit/ndk";
import { useInfiniteQuery } from "@tanstack/react-query";
import { useEffect, useMemo, useState } from "react";
import { Link, useNavigate, useParams } from "react-router-dom";
import { toast } from "sonner";
import { WVList } from "virtua";

export function UserRoute() {
	const ark = useArk();
	const storage = useStorage();
	const navigate = useNavigate();

	const { id } = useParams();
	const { user } = useProfile(id);
	const { data, hasNextPage, isLoading, isFetchingNextPage, fetchNextPage } =
		useInfiniteQuery({
			queryKey: ["user-posts", id],
			initialPageParam: 0,
			queryFn: async ({
				signal,
				pageParam,
			}: {
				signal: AbortSignal;
				pageParam: number;
			}) => {
				const events = await ark.getInfiniteEvents({
					filter: {
						kinds: [NDKKind.Text, NDKKind.Repost],
						authors: [id],
					},
					limit: FETCH_LIMIT,
					pageParam,
					signal,
				});

				return events;
			},
			getNextPageParam: (lastPage) => {
				const lastEvent = lastPage.at(-1);
				if (!lastEvent) return;
				return lastEvent.created_at - 1;
			},
			refetchOnWindowFocus: false,
		});

	const [followed, setFollowed] = useState(false);

	const allEvents = useMemo(
		() => (data ? data.pages.flatMap((page) => page) : []),
		[data],
	);

	const follow = async (pubkey: string) => {
		try {
			const add = await ark.createContact({ pubkey });
			if (add) {
				setFollowed(true);
			} else {
				toast.success("You already follow this user");
			}
		} catch (error) {
			console.log(error);
		}
	};

	const unfollow = async (pubkey: string) => {
		try {
			const remove = await ark.deleteContact({ pubkey });
			if (remove) {
				setFollowed(false);
			}
		} catch (error) {
			console.log(error);
		}
	};

	const renderItem = (event: NDKEvent) => {
		switch (event.kind) {
			case NDKKind.Text:
				return <TextNote key={event.id} event={event} className="mt-3" />;
			case NDKKind.Repost:
				return <RepostNote key={event.id} event={event} className="mt-3" />;
			default:
				return <TextNote key={event.id} event={event} className="mt-3" />;
		}
	};

	useEffect(() => {
		if (storage.account.contacts.includes(id)) {
			setFollowed(true);
		}
	}, []);

	return (
		<WVList className="pb-5 overflow-y-auto">
			<div className="h-11 bg-neutral-50 dark:bg-neutral-950 border-b flex items-center px-3 border-neutral-100 dark:border-neutral-900 mb-3">
				<button
					type="button"
					className="inline-flex items-center gap-2.5 text-sm font-medium"
					onClick={() => navigate(-1)}
				>
					<ArrowLeftIcon className="size-4" />
					Back
				</button>
			</div>
			<div className="px-3">
				<div className="flex flex-col gap-2">
					<div className="flex items-center justify-between">
						<img
							src={user?.picture || user?.image}
							alt={id}
							className="h-12 w-12 shrink-0 rounded-lg object-cover"
							loading="lazy"
							decoding="async"
						/>
						<div className="inline-flex items-center gap-2">
							{followed ? (
								<button
									type="button"
									onClick={() => unfollow(id)}
									className="inline-flex h-9 w-28 items-center justify-center rounded-lg bg-neutral-200 text-sm font-medium hover:bg-blue-500 hover:text-white dark:bg-neutral-800"
								>
									Unfollow
								</button>
							) : (
								<button
									type="button"
									onClick={() => follow(id)}
									className="inline-flex h-9 w-28 items-center justify-center rounded-lg bg-neutral-200 text-sm font-medium hover:bg-blue-500 hover:text-white dark:bg-neutral-800"
								>
									Follow
								</button>
							)}
							<Link
								to={`/chats/${id}`}
								className="inline-flex h-9 w-28 items-center justify-center rounded-lg bg-neutral-200 text-sm font-medium hover:bg-blue-500 hover:text-white dark:bg-neutral-800"
							>
								Message
							</Link>
						</div>
					</div>
					<div className="flex flex-1 flex-col gap-1.5">
						<div className="flex flex-col">
							<h5 className="text-lg font-semibold">
								{user?.name ||
									user?.display_name ||
									user?.displayName ||
									"Anon"}
							</h5>
							{user?.nip05 ? (
								<NIP05
									pubkey={id}
									nip05={user?.nip05}
									className="max-w-[15rem] truncate text-sm text-neutral-600 dark:text-neutral-400"
								/>
							) : (
								<span className="max-w-[15rem] truncate text-sm text-neutral-600 dark:text-neutral-400">
									{displayNpub(id, 16)}
								</span>
							)}
						</div>
						<div className="max-w-[500px] select-text break-words text-neutral-900 dark:text-neutral-100">
							{user?.about}
						</div>
					</div>
				</div>
				<div className="pt-2 mt-2 border-t border-neutral-100 dark:border-neutral-900">
					<h3 className="text-lg font-semibold text-neutral-900 dark:text-neutral-100">
						Latest posts
					</h3>
					<div className="flex h-full w-full flex-col justify-between gap-1.5 pb-10">
						{isLoading ? (
							<div className="flex items-center justify-center">
								<LoaderIcon className="h-4 w-4 animate-spin" />
							</div>
						) : (
							allEvents.map((item) => renderItem(item))
						)}
						<div className="flex h-16 items-center justify-center px-3 pb-3">
							{hasNextPage ? (
								<button
									type="button"
									onClick={() => fetchNextPage()}
									disabled={!hasNextPage || isFetchingNextPage}
									className="inline-flex h-10 w-max items-center justify-center gap-2 rounded-full bg-blue-500 px-6 font-medium text-white hover:bg-blue-600 focus:outline-none"
								>
									{isFetchingNextPage ? (
										<LoaderIcon className="h-4 w-4 animate-spin" />
									) : (
										<>
											<ArrowRightCircleIcon className="h-5 w-5" />
											Load more
										</>
									)}
								</button>
							) : null}
						</div>
					</div>
				</div>
			</div>
		</WVList>
	);
}