package eu.eudat.logic.managers;

import eu.eudat.data.entities.LoginConfirmationEmail;
import eu.eudat.data.entities.UserInfo;
import eu.eudat.exceptions.emailconfirmation.HasConfirmedEmailException;
import eu.eudat.exceptions.emailconfirmation.TokenExpiredException;
import eu.eudat.logic.services.ApiContext;
import eu.eudat.models.data.security.Principal;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.UUID;

@Component
public class EmailConfirmationManager {
	private ApiContext apiContext;

	@Autowired
	public EmailConfirmationManager(ApiContext apiContext) {
		this.apiContext = apiContext;
	}

	public void confirmEmail(String token) throws TokenExpiredException, HasConfirmedEmailException {
		LoginConfirmationEmail loginConfirmationEmail = apiContext.getOperationsContext()
				.getDatabaseRepository().getLoginConfirmationEmailDao().asQueryable()
				.where((builder, root) -> builder.equal(root.get("token"), UUID.fromString(token))).getSingle();
		if (loginConfirmationEmail.getExpiresAt().compareTo(new Date()) < 0)
			throw new TokenExpiredException("Token has expired.");
		UserInfo user = apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao().asQueryable()
				.where((builder, root) -> builder.equal(root.get("id"), loginConfirmationEmail.getUserId())).getSingle();
		if (user.getEmail() != null)
			throw new HasConfirmedEmailException("User already has confirmed his Email.");
		loginConfirmationEmail.setIsConfirmed(true);
		user.setEmail(loginConfirmationEmail.getEmail());
		apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao().createOrUpdate(user);
		apiContext.getOperationsContext().getDatabaseRepository().getLoginConfirmationEmailDao().createOrUpdate(loginConfirmationEmail);
	}

	public void sendConfirmationEmail(String email, Principal principal) throws HasConfirmedEmailException {
		UserInfo user = apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao().find(principal.getId());
		if (user.getEmail() != null)
			throw new HasConfirmedEmailException("User already has confirmed his Email.");
		apiContext.getUtilitiesService().getConfirmationEmailService().createConfirmationEmail(
				apiContext.getOperationsContext().getDatabaseRepository().getLoginConfirmationEmailDao(),
				apiContext.getUtilitiesService().getMailService(),
				email,
				principal.getId());
	}
}