"use client";
import { useEffect, useState } from "react";
import Image from "next/image";
import Link from "next/link";
import { RiArrowRightLine } from "react-icons/ri";
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { NDKEvent } from "@nostr-dev-kit/ndk";
import { BANNER } from "@/constants/app";
import { getNameToShow } from "@/lib/utils";
import { nip19 } from "nostr-tools";
import useProfile from "@/lib/hooks/useProfile";
import useEvents from "@/lib/hooks/useEvents";
import { getTagAllValues, getTagValues } from "@/lib/nostr/utils";
import { useNDK } from "@/app/_providers/ndk";

type CalendarCardProps = {
  calendar: NDKEvent;
};

export default function CalendarCard({ calendar }: CalendarCardProps) {
  const { pubkey, tags, content } = calendar;
  const { ndk } = useNDK();
  const npub = nip19.npubEncode(pubkey);
  const { profile } = useProfile(pubkey);
  const encodedEvent = calendar.encode();
  const [upcomingEvents, setUpcomingEvents] = useState<NDKEvent[]>([]);
  const [isFetching, setIsFetching] = useState(false);
  const name = getTagValues("name", tags);
  const description = content ?? getTagValues("about", tags);
  const calendarEvents = getTagAllValues("a", tags);
  const calendarEventIdentifiers = calendarEvents
    .map((e) => nip19.decode(e))
    .filter(({ type }) => type === "naddr")
    .map((e) => e.data as nip19.AddressPointer);

  async function handleFetchEvents(data: nip19.AddressPointer[]) {
    if (!ndk) return;
    setIsFetching(true);
    const events: NDKEvent[] = [];
    const promiseArray = [];
    for (const info of data) {
      const calendarEventPromise = ndk
        .fetchEvent({
          authors: [info.pubkey],
          ["#d"]: [info.identifier],
          kinds: [info.kind],
        })
        .then((e) => e && events.push(e))
        .catch((err) => console.log("err"));
      promiseArray.push(calendarEventPromise);
    }
    await Promise.all(promiseArray);
    setUpcomingEvents(events);
    setIsFetching(false);
  }

  useEffect(() => {
    if (
      !ndk ||
      calendarEventIdentifiers.length === 0 ||
      isFetching ||
      upcomingEvents.length
    )
      return;
    handleFetchEvents(calendarEventIdentifiers);
  }, [ndk, calendarEventIdentifiers]);

  return (
    <Card className="relative h-[350px] w-[250px] min-w-[250] overflow-hidden">
      <Image
        alt="background"
        src={profile?.banner ?? BANNER}
        className="absolute inset-0 object-cover"
        fill
        unoptimized
      />
      <div className="absolute inset-0 bg-zinc-800/20 backdrop-blur-lg transition-all">
        <div className="group relative flex h-full w-full flex-col items-center justify-end transition-all">
          <CardHeader className="absolute inset-x-0 top-[59%] transform pt-4 text-center transition-all duration-300 group-hover:top-[8px] group-hover:ml-[75px] group-hover:text-left">
            <Link href={`/calendar/${encodedEvent}`}>
              <CardTitle className="text-zinc-100 hover:underline">
                {name}
              </CardTitle>
            </Link>
            <CardDescription className="line-clamp-3 text-zinc-200 group-hover:text-xs">
              {description}
            </CardDescription>
          </CardHeader>
          <Image
            alt="user"
            src={
              profile?.image ??
              profile?.picture ??
              `https://bitcoinfaces.xyz/api/get-image?name=${npub}&onchain=false`
            }
            className="absolute left-1/2 top-1/2 aspect-square -translate-x-1/2 -translate-y-[70%] transform overflow-hidden rounded-lg bg-muted object-cover transition-all duration-300 group-hover:left-[50px] group-hover:top-[65px] group-hover:w-[70px]"
            height={100}
            width={100}
            unoptimized
          />
          <Card className="absolute top-full min-h-full w-5/6 overflow-hidden transition-all duration-300 group-hover:top-1/3">
            <CardHeader className="border-b p-4 pb-3">
              <CardTitle>Upcoming Events:</CardTitle>
            </CardHeader>
            <CardContent className="overflow-hidden px-0">
              <ul className="w-full">
                {upcomingEvents.map((item) => {
                  const { tags, content } = item;
                  const encodedEvent = item.encode();
                  const name = getTagValues("name", tags);
                  const description = content;
                  return (
                    <li key={item.id} className="w-full overflow-hidden">
                      <Link
                        href={`/event/${encodedEvent}`}
                        className="flex max-w-full items-center justify-between overflow-hidden py-1.5 pl-4 pr-2 transition-colors hover:bg-muted hover:text-primary"
                      >
                        <div className="shrink overflow-x-hidden">
                          <h4 className="line-clamp-1 text-sm font-semibold text-card-foreground">
                            {name}
                          </h4>
                          <p className="line-clamp-2 text-[10px] leading-4 text-muted-foreground">
                            {description ?? ""}
                          </p>
                        </div>
                        <div className="center ml-auto shrink-0 pl-2">
                          <RiArrowRightLine className="h-5 w-5" />
                        </div>
                      </Link>
                    </li>
                  );
                })}
              </ul>
            </CardContent>
          </Card>
        </div>
      </div>
    </Card>
  );
}