export async function POST(req) {
  try {
    const body = await req.json();
    const { email, password } = body;

    //fetch
    const user = await User.findOne({ email });

    // Hash password
    const validPassword = await bcrypt.compare(password, user.password);

    if (!validPassword) {
      return NextResponse.json({ message: "Wrong Credientials.", success: false }, { status: 400 });
    }
    //create token data
    const tokenData = {
      id: user._id,
      username: user.username,
      email: user.email
    }

    // Option to prevent dots in the token
    const token = jwt.sign(tokenData, process.env.TOKEN, {
      expiresIn: '7d',
      // Ensure no dots in the resulting token
      jwtid: 'unique-id-without-dots'
    });


    const response = NextResponse.json({
      message: "Login successful",
      success: true,
    })
    response.cookies.set("token", token, {
      httpOnly: true,

    })
    return response;

  } catch (error) {
    console.log('jo');
    return NextResponse.json({ error: error.message }, { status: 500 })
  }
}

  console.log(process.env.DOMAIN);
  const checkEmailExists = async (email) => {
    try {
      const response = await axios.get(`/api/user/signup/email?email=${email}`);
      return response.data.exists;
    } catch (error) {
      throw new Error('Error checking email');
    }
  };

  const matchUser = async (email, password) => {
    try {
      const response = await axios.post(`/api/user/login`, { email, password });
      return response;
    } catch (error) {
      throw new Error('Error checking email and password');
    }
  };

  const handleSubmit = (e) => {
    e.preventDefault();
    setLoading(true);
    setError('');

    if (!email || password.length === 0) {
      setLoading(false);
      setError('Please fill all the fields');
      return;
    }

    checkEmailExists(email)
      .then((emailExists) => {
        if (!emailExists) {
          setLoading(false);
          showAlert('Error', 'You have not signed up before, please Sign Up.');
          router.push('/signup');
          return Promise.reject('Email does not exist');
        }

        return matchUser(email, password);
      })
      .then((response) => {
        if (response.status === 200) {
          setLoading(false);
          setUser(response.data.data);
          fetchCurrentUser();
          showAlert('Success', 'You have logged in successfully!');
          setEmail('');
          setPassword('');
          router.push(nextPath);
        } else {
          setLoading(false);
          showAlert('Error', 'There was an error logging in. Please try again.');
        }
      })
      .catch((error) => {
        if (error.message === 'Email does not exist') {
          setError('Email does not exist');
        } else {
          setError('Invalid email or password');
        }
        setLoading(false);
      });
  };