import React, { useEffect } from "react";
import {
  SafeAreaView,
  View,
  Text,
  TouchableOpacity,
  StyleSheet,
} from "react-native";
import MaterialIcons from "@expo/vector-icons/MaterialIcons";
import Ionicons from "@expo/vector-icons/Ionicons";

import LoginSVG from "../assets/images/login.svg";
import GoogleSVG from "../assets/images/google.svg";
import FacebookSVG from "../assets/images/facebook.svg";
import TwitterSVG from "../assets/images/twitter.svg";

import CustomButton from "../components/Buttons/CustomButton";
import InputField from "../components/InputField";
import { globalStyles } from "../styles/global";
import Loader from "../components/Loader";
import { Formik } from "formik";
import { loginSchema } from "../schemas/loginSchema";
import { useDispatch, useSelector } from "react-redux";
import { selectLoginError } from "../store/selectors/loginSelectors";
import {
  clearLoginErrors,
  fetchUser,
} from "../store/actions/login/loginActions";
import { selectIsLoadingByActionType } from "../store/selectors/loadingSelectors";
import { LOGIN_USER_SCOPE } from "../store/actions/login/loginActionConstants";
import { fetchAuthProvider } from "../store/actions/authProvider/authProviderActions";
import useAuthHook from "../hooks/useAuthHook";
import { storeData } from "../service/asyncStorage";
import { ACCESS_TOKEN } from "../constants/localStorage";

const LoginScreen = ({ navigation }) => {
  const { response, promptAsync } = useAuthHook();
  const dispatch = useDispatch();
  const error = useSelector(selectLoginError);

  const isLoading = useSelector(selectIsLoadingByActionType(LOGIN_USER_SCOPE));

  const storeToken = async (token) => {
    await storeData(ACCESS_TOKEN, token);
  }

  useEffect(() => {
    if (response?.type === "success") {
      const accessToken = response.authentication.accessToken;
      if (accessToken) {
        storeToken(accessToken);
        dispatch(fetchAuthProvider({ accessToken }));
      }
    }
  }, [response]);

  const handleGoogleAuth = () => {
    promptAsync({ useProxy: true, showInRecents: true });
  };

  const handleLogin = (values) => {
    const { email, password } = values;
    dispatch(clearLoginErrors());
    dispatch(
      fetchUser({
        identifier: email,
        password,
      })
    );
  };

  return (
    <SafeAreaView style={globalStyles.safeArea}>
      <Loader visible={isLoading} />
      <View style={{ paddingHorizontal: 25 }}>
        <View style={{ alignItems: "center" }}>
          <LoginSVG height={300} width={300} />
        </View>
        <Formik
          initialValues={{
            email: "",
            password: "",
          }}
          validationSchema={loginSchema}
          onSubmit={handleLogin}
          validateOnChange={false}
          validateOnBlur={false}
        >
          {({
            handleChange,
            handleBlur,
            handleSubmit,
            values,
            isValid,
            errors,
          }) => (
            <>
              <Text style={globalStyles.boldText}>Sign In</Text>
              <InputField
                name="email"
                label={"Email"}
                keyboardType="email-address"
                onChangeText={handleChange("email")}
                text={values.email}
                handleBlur={handleBlur("email")}
                icon={
                  <MaterialIcons
                    name="alternate-email"
                    size={20}
                    color="#666"
                    style={{ marginRight: 5 }}
                  />
                }
              />
              {errors.email && (
                <Text style={styles.errorMessage}>{errors.email}</Text>
              )}
              <InputField
                name="password"
                label={"Password"}
                filedButtonLabel={"Forgot?"}
                fieldButtonFunction={() => {}}
                inputType="password"
                handleBlur={handleBlur("password")}
                text={values.password}
                onChangeText={handleChange("password")}
                icon={
                  <Ionicons
                    name="ios-lock-closed-outline"
                    size={20}
                    color="#666"
                    style={{ marginRight: 5 }}
                  />
                }
              />
              {errors.password && (
                <Text style={styles.errorMessage}>{errors.password}</Text>
              )}
              {error && <Text style={styles.errorMessage}>{error}</Text>}
              <CustomButton label={"Login"} onPress={handleSubmit} />
            </>
          )}
        </Formik>
        <Text style={globalStyles.regularCenteredText}>Or login with ...</Text>
        <View style={styles.providersContainer}>
          <TouchableOpacity
            onPress={handleGoogleAuth}
            style={globalStyles.iconButton}
          >
            <GoogleSVG height={24} width={24} />
          </TouchableOpacity>
          <TouchableOpacity onPress={() => {}} style={globalStyles.iconButton}>
            <FacebookSVG height={24} width={24} />
          </TouchableOpacity>
          <TouchableOpacity onPress={() => {}} style={globalStyles.iconButton}>
            <TwitterSVG height={24} width={24} />
          </TouchableOpacity>
        </View>
        <View style={styles.registerContainer}>
          <Text style={globalStyles.regularText}>Need account? </Text>
          <TouchableOpacity onPress={() => navigation.navigate("Register")}>
            <Text style={styles.registerButtonText}>Sign Up</Text>
          </TouchableOpacity>
        </View>
      </View>
    </SafeAreaView>
  );
};

const styles = StyleSheet.create({
  providerText: {
    textAlign: "center",
    color: "#666",
    marginBottom: 30,
    fontFamily: "poppins-regular",
  },
  providersContainer: {
    flexDirection: "row",
    justifyContent: "space-between",
    marginBottom: 30,
  },
  registerContainer: {
    flexDirection: "row",
    justifyContent: "center",
    marginBottom: 30,
  },
  registerButtonText: {
    color: "#AD40AF",
    fontWeight: "700",
    fontFamily: "poppins-semibold",
  },
  errorMessage: {
    marginBottom: 30,
    color: "red",
  },
});

export default LoginScreen;