"use client";
import { Dispatch, SetStateAction, useEffect, useState } from "react";
import type { PublicKey } from "@solana/web3.js";
import { PhantomProvider } from "typings";
import { useRouter } from "next/navigation";
import { BiLoaderAlt } from "react-icons/bi";

export default function Navbar({
  setUserId,
}: {
  setUserId: Dispatch<SetStateAction<string>>;
}) {
  const router = useRouter();

  const [provider, setProvider] = useState<PhantomProvider>();
  const [walletAddress, setWalletAddress] = useState("");
  const [showErrorMessage, setShowErrorMessage] = useState(false);
  const [isLoading, setIsLoading] = useState(true);

  useEffect(() => {
    const provider = getProvider();
    setProvider(provider);

    if (provider) {
      provider.on("connect", async (publicKey: PublicKey) => {
        setIsLoading(true);
        const body = { wallet: publicKey };
        const res = await fetch("/api/user/login", {
          method: "POST",
          body: JSON.stringify(body),
          headers: { "Content-Type": "application/json" },
        });
        if (res.status === 200) {
          const { userId } = await res.json();
          localStorage.setItem("userId", userId);
          setWalletAddress(publicKey.toBase58());
          setUserId(userId);
        }
        if (res.status === 404) {
          setShowErrorMessage(true);
          setTimeout(() => {
            setShowErrorMessage(false);
          }, 3000);
        }
        setIsLoading(false);
      });
    }

    const localStorageUserId = localStorage.getItem("userId");
    if (localStorageUserId) {
      setUserId(localStorageUserId);
      const fetchWallet = async () => {
        const res = await fetch(`/api/user/${localStorageUserId}/wallet`);
        if (res.status === 200) {
          const { wallet } = await res.json();
          setWalletAddress(wallet);
          setIsLoading(false);
        }
      };
      fetchWallet();
      return;
    }
    setIsLoading(false);
  }, []);

  const getProvider = () => {
    if ("phantom" in window) {
      const anyWindow: any = window;
      const provider = anyWindow.phantom.solana;
      if (provider.isPhantom) return provider;
    }
  };

  const connectWallet = () => {
    if (!provider) return console.log("no provider");
    provider.connect();
  };

  const logout = () => {
    localStorage.removeItem("userId");
    setUserId("");
    setWalletAddress("");
    provider?.disconnect();
    router.refresh();
  };

  return (
    <nav className="text-white flex justify-between mt-4">
      <button
        onClick={() => router.push("/")}
        className="p-2 m-4 text-3xl font-bold"
      >
        Moon Miners
      </button>
      {showErrorMessage && (
        <div className="p-2 m-4 bg-red-800 rounded-lg">
          Wallet address not registered!
        </div>
      )}
      {walletAddress.length === 0 ? (
        <button
          onClick={connectWallet}
          className="p-2 m-4 bg-slate-800 rounded-lg"
        >
          {isLoading ? (
            <BiLoaderAlt className="animate-spin w-28" />
          ) : (
            "Connect Wallet"
          )}
        </button>
      ) : (
        <div className="flex items-stretch">
          <button className="p-2 m-4 bg-slate-800 rounded-lg">
            {walletAddress}
          </button>
          <button onClick={logout} className="p-2 m-4 bg-slate-800 rounded-lg">
            Logout
          </button>
        </div>
      )}
    </nav>
  );
}