"use client";
import { useState, useRef, useEffect } from "react";
import Template from "./Template";
import { Button } from "@/components/ui/button";
import { useModal } from "@/app/_providers/modal/provider";
import { nip19 } from "nostr-tools";
// import { useKeys } from "@/app/_providers/keysProvider";
import { useNDK } from "@/app/_providers/ndk";
import useCurrentUser from "@/lib/hooks/useCurrentUser";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import AddPassphrase from "./AddPassphrase";
import { decryptMessage } from "@/lib/nostr";
import { toast } from "sonner";

export default function LoginModal() {
  const { loginWithNip07, loginWithSecret } = useNDK();
  const { loginWithPubkey, currentUser } = useCurrentUser();
  const [isLoading, setIsLoading] = useState(false);
  const [showExtensionLogin, setShowExtensionLogin] = useState(true);
  const [showPassphraseLogin, setShowPassphraseLogin] = useState(false);
  const [nsec, setNsec] = useState("");
  const [passphrase, setPassphrase] = useState("");
  const [encryptedNsec, setEncryptedNsec] = useState("");
  const modal = useModal();

  useEffect(() => {
    const shouldReconnect = localStorage.getItem("shouldReconnect");
    const encryptedNsec_ = localStorage.getItem("encrypted-nsec");

    const getConnected = async (shouldReconnect: string) => {
      let enabled: boolean | void = false;

      if (typeof window.nostr === "undefined") {
        return setShowExtensionLogin(false);
      }

      if (shouldReconnect === "true") {
        const user = await loginWithNip07();
        if (!user) {
          throw new Error("NO auth");
        }
        await loginWithPubkey(nip19.decode(user.npub).data.toString());
        // keys?.setKeys({
        //   privkey: "",
        //   pubkey: ,
        // });
      }

      if (typeof window.webln === "undefined") {
        return;
      }

      if (shouldReconnect === "true" && !window.webln.executing) {
        try {
          enabled = await window.webln.enable();
        } catch (e: any) {
          console.log(e.message);
        }
      }
      return enabled;
    };
    if (encryptedNsec_) {
      setEncryptedNsec(encryptedNsec_);
      setShowPassphraseLogin(true);
    } else if (shouldReconnect === "true") {
      getConnected(shouldReconnect);
    }
  }, []);

  useEffect(() => {
    if (currentUser) {
      modal?.hide();
    }
  }, [currentUser]);

  async function handleLogin() {
    setIsLoading(true);
    if (typeof window.nostr !== "undefined") {
      const user = await loginWithNip07();
      if (!user) {
        throw new Error("NO auth");
      }
      await loginWithPubkey(nip19.decode(user.npub).data.toString());
      localStorage.setItem("shouldReconnect", "true");
    }

    if (typeof window.webln !== "undefined") {
      await window.webln.enable();
    }
    console.log("connected ");
    setIsLoading(false);
    modal?.hide();
  }
  async function handleLoginPassphrase() {
    if (!encryptedNsec || !passphrase) return;
    setIsLoading(true);

    const decryptedNsec = decryptMessage(encryptedNsec, passphrase);
    if (!decryptedNsec) {
      setIsLoading(false);
      toast.error("An error has occured");
      return;
    }
    const user = await loginWithSecret(decryptedNsec);
    if (!user) {
      throw new Error("NO auth");
    }
    await loginWithPubkey(nip19.decode(user.npub).data.toString());
    if (typeof window.webln !== "undefined") {
      await window.webln.enable();
    }
    setIsLoading(false);
    modal?.hide();
  }
  async function handleLoginNsec(nsec_?: string) {
    setIsLoading(true);
    console.log("loging in");

    const user = await loginWithSecret(nsec_ ?? nsec);
    if (!user) {
      throw new Error("NO auth");
    }
    console.log("LOGIN", user);
    await loginWithPubkey(nip19.decode(user.npub).data.toString());
    if (typeof window.webln !== "undefined") {
      await window.webln.enable();
    }
    setIsLoading(false);
    modal?.swap(<AddPassphrase nsec={nsec} />);
  }

  return (
    <Template title="Login" className="md:max-w-[400px]">
      <div className="flex flex-col gap-y-5">
        {showExtensionLogin && (
          <Button onClick={() => void handleLogin()} loading={isLoading}>
            Connect with extension
          </Button>
        )}
        {showPassphraseLogin ? (
          <div className="space-y-3">
            <Label>Passphrase</Label>
            <Input
              value={passphrase}
              onChange={(e) => setPassphrase(e.target.value)}
              placeholder="passphrase..."
              type="password"
              className="text-[16px]"
            />
            <Button
              variant={"outline"}
              onClick={() => void handleLoginPassphrase()}
              loading={isLoading}
              className="w-full"
            >
              Login with Passphrase
            </Button>
            <div className="center">
              <Button
                variant={"link"}
                size={"sm"}
                className="h-0 pt-1"
                onClick={() => setShowPassphraseLogin(false)}
              >
                Or, use Nsec
              </Button>
            </div>
          </div>
        ) : (
          <div className="space-y-3">
            <Label>Nsec</Label>
            <Input
              value={nsec}
              onChange={(e) => setNsec(e.target.value)}
              placeholder="nsec..."
              className="text-[16px]"
            />
            <Button
              variant={"outline"}
              onClick={() => void handleLoginNsec()}
              loading={isLoading}
              className="w-full"
            >
              Connect with Nsec
            </Button>
            {!!encryptedNsec && (
              <div className="center">
                <Button
                  variant={"link"}
                  size={"sm"}
                  className="h-0 pt-1"
                  onClick={() => setShowPassphraseLogin(true)}
                >
                  Or, use Passphrase
                </Button>
              </div>
            )}
          </div>
        )}
      </div>
    </Template>
  );
}