import {
  Divider,
  Flex,
  Heading,
  Text,
  useColorModeValue,
  VStack,
} from "@chakra-ui/react";
import React, { useEffect } from "react";
import { Navigate, useNavigate } from "react-router-dom";
import SignUpButton from "../utils/SignUpButton";
import { signUpBtnDesigns } from "../utils/signUpBtnDesign";
import { signInWithPopup } from "firebase/auth";
import { useAuth } from "../context/auth";
import { auth } from "../config/firebase";
import { createUser } from "../lib/api";
import { useState } from "react";
import useGenerateUserName from "../hooks/useGenerateUserName";
import { useSelector } from "react-redux";

const SignUp = ({ type }) => {
  //scroll top
  useEffect(() => window.scrollTo(0, 0), []);

  const navigate = useNavigate();
  const getUsername = useGenerateUserName();

  const [signingIn, setSigningIn] = useState(false);

  const { profileData } = useSelector((state) => state.profileData);

  const user = useAuth();

  const cardBg = useColorModeValue("light.cardBg", "dark.cardBg");
  const color = useColorModeValue("light.primary", "dark.primary");
  const dividerColor = useColorModeValue("light.cardBorder", "dark.cardBorder");

  if (!signingIn && user) {
    return <Navigate to="/" />;
  }

  const signin = (provider) => {
    setSigningIn(true);
    signInWithPopup(auth, provider)
      .then((res) => {
        const userId = res.user.uid;
        const authenticatedUser = profileData?.find(
          (userData) => userData.id === userId
        );

        const username = authenticatedUser
          ? authenticatedUser.username
          : getUsername(res.user.displayName, userId);

        const userData = {
          name: res.user.displayName,
          username,
          profile: res.user.photoURL,
          createdAt: res.user.metadata.createdAt,
        };

        createUser(userId, userData)
          .then((_) => {
            navigate(-1);

            console.log("created user successfully");
          })
          .catch((err) => {
            console.log("failed to create user");
          });
      })
      .catch((err) => {
        setSigningIn(false);
        console.log(err.message);
      });
  };

  return (
    <VStack mx="auto" justify="center" maxW="640px" flex="1">
      <VStack
        bg={cardBg}
        className="shadow"
        p={{ base: "2rem 1rem", sm: "3rem" }}
        textAlign="center"
        borderRadius="5px"
      >
        <Heading fontSize="1.7rem">Welcome to DEV Community</Heading>

        <Text mb="1rem !important">
          <Text
            as="span"
            color={color}
            cursor="pointer"
            onClick={() => navigate("/")}
          >
            DEV Community 👩‍💻👨‍💻
          </Text>{" "}
          is a community of 890,178 amazing developers
        </Text>

        {signUpBtnDesigns.map((obj) => (
          <SignUpButton
            {...obj}
            onClick={() => signin(obj.signInMethod)}
            key={obj.logo}
            type={type === "login" ? "Continue with" : "Sign up with"}
          />
        ))}

        {type !== "login" && (
          <Flex w="100%" align="center" mt="1.5rem !important">
            <Divider flex={1} bg={dividerColor} h="1.5px" />
            <Text fontSize="14px" mx="1rem">
              Already have an account?{" "}
              <Text
                as="span"
                color={color}
                cursor="pointer"
                onClick={() => navigate("/login")}
              >
                Log in
              </Text>
              .
            </Text>
            <Divider flex={1} bg={dividerColor} h="1.5px" />
          </Flex>
        )}
      </VStack>
    </VStack>
  );
};

export default SignUp;