import { useRouter, usePathname } from 'expo-router';
import { useCallback, useMemo, useState } from 'react';
import { Platform } from 'react-native';

import useSocialAuth from './useSocialAuth';
import { useAuth } from '../providers/auth-context';
import { useLoading } from '../providers/loading-context';
import { useTooltip } from '../providers/tooltip-context';

const normalizeEmail = rawEmail =>
  typeof rawEmail === 'string' ? rawEmail.trim().toLowerCase() : '';

const normalizePassword = rawPassword =>
  typeof rawPassword === 'string' ? rawPassword.trim() : '';

const MIN_PASSWORD_LENGTH = 6;

const useRegisterForm = () => {
  const router = useRouter();
  const pathname = usePathname();
  const { registerWithEmail, redirectUser } = useAuth();
  const { withLoading, isLoading } = useLoading();
  const { showTooltip } = useTooltip();
  const defaultEmail = __DEV__ ? `test@${Platform.OS}.com` : '';
  const defaultPassword = __DEV__ ? 'Minuit33' : '';
  const [email, setEmail] = useState(defaultEmail);
  const [password, setPassword] = useState(defaultPassword);
  const [confirmPassword, setConfirmPassword] = useState(defaultPassword);

  const { signInWithGoogle, signInWithApple, isAppleSignInAvailable } =
    useSocialAuth({ defaultAction: 'register' });

  const handleSubmit = useCallback(async () => {
    if (isLoading) {
      return;
    }

    const trimmedEmail = normalizeEmail(email);
    const trimmedPassword = normalizePassword(password);
    const trimmedConfirm = normalizePassword(confirmPassword);

    if (!trimmedEmail || !trimmedPassword || !trimmedConfirm) {
      showTooltip({
        message: 'Merci de renseigner tous les champs requis.',
        type: 'error',
      });
      return;
    }

    if (trimmedPassword.length < MIN_PASSWORD_LENGTH) {
      showTooltip({
        message: `Le mot de passe doit contenir au moins ${MIN_PASSWORD_LENGTH} caractères.`,
        type: 'error',
      });
      return;
    }

    if (trimmedPassword !== trimmedConfirm) {
      showTooltip({
        message: 'Les mots de passe ne correspondent pas.',
        type: 'error',
      });
      return;
    }

    try {
      await withLoading(async () => {
        await registerWithEmail(trimmedEmail, trimmedPassword);
      });
      await redirectUser({ router, pathname, isInitial: false });
      showTooltip({
        message: 'Compte créé ! Bienvenue chez Minuit.',
        type: 'success',
      });
    } catch (error) {
      showTooltip({
        message:
          error?.message || 'Impossible de créer votre compte pour le moment.',
        type: 'error',
      });
    }
  }, [
    confirmPassword,
    email,
    isLoading,
    password,
    redirectUser,
    registerWithEmail,
    router,
    pathname,
    showTooltip,
    withLoading,
  ]);

  const submitDisabled = useMemo(() => {
    const trimmedEmail = normalizeEmail(email);
    const trimmedPassword = normalizePassword(password);
    const trimmedConfirm = normalizePassword(confirmPassword);
    return (
      !trimmedEmail ||
      !trimmedPassword ||
      !trimmedConfirm ||
      trimmedPassword.length < MIN_PASSWORD_LENGTH ||
      isLoading
    );
  }, [confirmPassword, email, isLoading, password]);

  return {
    email,
    setEmail,
    password,
    setPassword,
    confirmPassword,
    setConfirmPassword,
    isLoading,
    submitDisabled,
    handleSubmit,
    signInWithGoogle,
    signInWithApple,
    isAppleSignInAvailable,
  };
};

export default useRegisterForm;