import React, { useState, useRef, useEffect, useGlobal } from "reactn";
import {
  Text,
  View,
  KeyboardAvoidingView,
  Image,
  Pressable,
} from "react-native";
import AsyncStorage from "@react-native-async-storage/async-storage";

import {
  responsiveHeight,
  responsiveWidth,
} from "../actions/responsiveSizes.js";

import firebase from "../config/firebase";

import Button from "../components/Button";
import { Input } from "../components/Input";

import { Fonts, gutters, Palette, Style } from "../styles";
import { Routes } from "../navigation";
import { art, mockups } from "../assets";
import {
  checkIfEmailIsValid,
  checkIfPasswordIsStrongEnough,
  handleFirebaseError,
} from "../actions/signupActions";

import useLayoutType from "../hooks/useLayoutType.js";
import { capitalize } from "../helpers/index.js";

export default ({ navigation }) => {
  console.log("LOGINSCREEN");
  const [, setTooltip] = useGlobal("_tooltip");
  const [, setIsLoading] = useGlobal("_isLoading");

  const [mode, setMode] = useState("LOGIN");

  const [emailIsStatic, setEmailIsStatic] = useState(false);

  const [email, setEmail] = useState("login@minuit.com");
  const [password, setPassword] = useState("password");

  const [firstName, setFirstName] = useState("");
  const [lastName, setLastName] = useState("");

  const passwordInputRef = useRef();

  const { isDesktop } = useLayoutType();

  useEffect(() => {
    const checkIfUserIsLoggedIn = async () => {
      const userEmail = await AsyncStorage.getItem("userEmail");

      if (userEmail) {
        setEmail(userEmail);
        setEmailIsStatic(true);
      }
    };

    checkIfUserIsLoggedIn();
  }, []);

  const onLogin = async () => {
    try {
      setIsLoading(true);

      let trimmedEmail = email.trim();

      await firebase.auth().signInWithEmailAndPassword(trimmedEmail, password);
      await AsyncStorage.setItem("userEmail", trimmedEmail);

      onAuthSuccess();
    } catch (error) {
      console.log(error);
      setTooltip({
        text: handleFirebaseError(error.code),
        type: "error",
      });
    } finally {
      setIsLoading(false);
    }
  };

  const onSignup = async () => {
    try {
      setIsLoading(true);

      if (!checkIfPasswordIsStrongEnough({ password })) {
        throw new Error(
          "Votre mot de passe doit contenir au moins 6 caractères, une majuscule et un chiffre."
        );
      }

      if (!checkIfEmailIsValid({ email })) {
        throw new Error("Veuillez renseigner une adresse email valide.");
      }

      const { user = null } = await firebase
        .auth()
        .createUserWithEmailAndPassword(email, password);

      if (!user) {
        throw new Error("Erreur lors de la création du compte");
      }

      let userObject = {
        firstName: capitalize(firstName.trim()),
        lastName: capitalize(lastName.trim()),
      };

      // push user data to firestore

      onAuthSuccess();

      setTooltip({
        text: "Votre compte a été créé avec succès!",
        type: "success",
      });
    } catch (error) {
      console.log(error);
      setTooltip({
        text: error?.code?.startsWith("auth/")
          ? handleFirebaseError(error.code)
          : error.message,
        type: "error",
      });
    } finally {
      setIsLoading(false);
    }
  };

  const onAuthSuccess = async () => {
    navigation.reset({
      index: 0,
      routes: [{ name: Routes.Splash }],
    });
  };

  return (
    <View
      headerType="NONE"
      style={{
        flex: 1,
        backgroundColor: Palette.lightPurple,
        ...Style.containerRow,
      }}
    >
      <View
        style={{
          position: "relative",
          flex: 1,
          padding: 2 * gutters,
          backgroundColor: Palette.darkPurple,
          height: "100%",
          ...Style.containerCenter,
        }}
      >
        <Image
          resizeMode="contain"
          source={art.gradientTriangle}
          style={{
            position: "absolute",
            top: responsiveHeight(20),
            right: responsiveHeight(5),
            width: responsiveWidth(140),
            height: responsiveWidth(140),
          }}
        />

        <KeyboardAvoidingView
          style={{ ...Style.containerCenter, width: "100%" }}
          behavior="padding"
          keyboardVerticalOffset={responsiveHeight(10)}
        >
          <Text
            style={{
              ...Fonts({ type: "megaTitle" }),
              marginBottom: responsiveHeight(10),
            }}
          >
            minuit.starter
          </Text>

          {emailIsStatic && mode === "LOGIN" ? (
            <>
              <Text
                style={{
                  ...Fonts({
                    type: "default",
                    color: Palette.white,
                    style: { marginBottom: 20, textAlign: "center" },
                  }),
                }}
              >
                {`Vous êtes connecté(e) avec l'adresse ${email},`}
              </Text>

              <Pressable
                onPress={async () => {
                  await AsyncStorage.removeItem("userEmail");

                  setEmailIsStatic(false);
                }}
              >
                <Text
                  style={{
                    ...Fonts({
                      type: "default",
                      color: Palette.primary,
                      style: {
                        marginBottom: 20,
                        textAlign: "center",
                        textDecorationLine: "underline",
                      },
                    }),
                  }}
                >
                  Modifier
                </Text>
              </Pressable>
            </>
          ) : (
            <Input
              layout="line"
              type="email"
              label="Adresse email"
              placeholder="Votre adresse email"
              value={email}
              setValue={setEmail}
              containerStyle={{ marginBottom: 20 }}
              textInputProps={{
                returnKeyType: "next",
                onSubmitEditing: () => passwordInputRef.current.focus(),
              }}
            />
          )}

          <Input
            layout="line"
            inputRef={passwordInputRef}
            label="Mot de passe"
            placeholder="Votre mot de passe"
            value={password}
            setValue={setPassword}
            type="password"
            containerStyle={{ marginBottom: gutters }}
            textInputProps={{
              returnKeyType: "done",
              onSubmitEditing: onLogin,
            }}
          />

          {mode === "LOGIN" ? (
            <Pressable
              onPress={() => navigation.navigate("ForgotPassword")}
              style={{ marginBottom: gutters }}
            >
              <Text
                style={{
                  ...Fonts({
                    type: "default",
                    style: { textDecorationLine: "underline" },
                  }),
                }}
              >
                Mot de passe oublié?
              </Text>
            </Pressable>
          ) : (
            <>
              <Input
                layout="line"
                label="Prénom"
                placeholder="Votre prénom"
                value={firstName}
                setValue={setFirstName}
                containerStyle={{ marginBottom: gutters }}
              />

              <Input
                layout="line"
                label="Nom"
                placeholder="Votre nom"
                value={lastName}
                setValue={setLastName}
                containerStyle={{ marginBottom: gutters }}
              />
            </>
          )}

          <Button
            {...(mode === "LOGIN"
              ? { text: "Connexion", onPress: onLogin }
              : {
                  text: "Inscription",
                  onPress: onSignup,
                })}
            containerStyle={{ marginBottom: gutters }}
          />

          <Pressable onPress={() => navigation.navigate("TermsOfUse")}>
            <Text
              style={Fonts({
                type: "default",
                style: { textAlign: "center", opacity: 1 },
              })}
            >
              En vous {mode === "LOGIN" ? "connectant" : "inscrivant"}, vous
              acceptez sans réserve les{" "}
              <Text
                style={{
                  color: Palette.primary,
                  textDecorationLine: "underline",
                }}
              >
                conditions générales d'utilisation
              </Text>{" "}
              de minuit.starter.
            </Text>
          </Pressable>
        </KeyboardAvoidingView>
      </View>

      {isDesktop && (
        <View style={{ flex: 2, height: "100%", overflow: "hidden" }}>
          <Image
            resizeMode="contain"
            source={mockups.loginAppDashboard}
            style={{
              position: "absolute",
              top: 0,
              right: 0,
              bottom: 0,
              width: "100%",
              height: "100%",
            }}
          />
        </View>
      )}
    </View>
  );
};