form-validation

    class LogInFragment : Fragment() {
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)


        //TODO events
        binding.buttonLogIn.setOnClickListener {
            if(validForm()) {
                showMessage()
            }
        }
    }
    
    //TODO validate form  S. O. L. I. D
    private fun validForm() :Boolean {
        binding.textInputLayoutUsername.error = null
        binding.textInputLayoutPassword.error = null

        val username = binding.textInputLayoutUsername.editText?.text.toString().trim()
        val password = binding.textInputLayoutPassword.editText?.text.toString().trim()

        if(username.isEmpty()) {
            binding.textInputLayoutUsername.error = "Ingresar username"
            return false
        }

        if(!username.isValidEmail()) {
            binding.textInputLayoutUsername.error = "Username campo inválido"
            return false
        }

        if(password.isEmpty()) {
            binding.textInputLayoutPassword.error = "Ingresar password"
            return false
        }
        return true
    }
    }