import { User } from '../models/user.model.js'

const registerUser = async (req, res) => {
  try {
    const { username, email, password } = req.body

    if (!username || !email || !password) {
      return res.status(400).json({ message: 'All fields are important!'})
    }

    const existing = await User.findOne({ email: email.toLowerCase() })
    if (existing) {
      return res.status(400).json({ message: 'User already exists.'})
    }

    const user = await User.create({
      username,
      email: email.toLowerCase(),
      password,
    })

    res.status(201).json({ 
      message: 'User registered.',
      user: { id: user._id, email: user.email, username: user.username }
    })
  } catch (error) {
    res.status(500).json({ message: 'Internal server error!', error: error.message })
  }
}

export {
  registerUser
}