package eu.eudat.services;

import eu.eudat.dao.entities.UserInfoDao;
import eu.eudat.dao.entities.security.UserTokenDao;
import eu.eudat.entities.Credential;
import eu.eudat.entities.UserInfo;
import eu.eudat.entities.UserToken;
import eu.eudat.models.criteria.UserInfoCriteria;
import eu.eudat.models.loginprovider.LoginProviderUser;
import eu.eudat.models.security.Principal;
import eu.eudat.security.validators.TokenValidatorFactoryImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.xml.ws.ServiceMode;
import java.util.*;

/**
 * Created by ikalyvas on 12/15/2017.
 */
@Service("authenticationService ")
public class AuthenticationService {
    private ApiContext apiContext;

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

    public Principal Touch(UUID token)
    {
        UserToken tokenEntry = this.apiContext.getDatabaseRepository().getUserTokenDao().read(token);
        if (tokenEntry == null || tokenEntry.getExpiresAt().before(new Date())) return null;

        Principal principal = this.Touch(tokenEntry);

        return principal;
    }

    public void Logout(UUID token)
    {
        UserToken tokenEntry = this.apiContext.getDatabaseRepository().getUserTokenDao().read(token);
        this.apiContext.getDatabaseRepository().getUserTokenDao().delete(tokenEntry);
    }

    private Principal Touch(UserToken token)
    {
        if (token == null || token.getExpiresAt().before(new Date())) return null;

        UserInfo user = this.apiContext.getDatabaseRepository().getUserInfoDao().find(token.getUser().getId());
        if (user == null /*|| user.Status != ActivityStatus.Active*/) return null;

        //List<UserRole> appRoles = this._unitOfWork.UserRoles.GetAll().Where(x => x.UserId == token.UserId /*&& x.Status == ActivityStatus.Active*/).ToList();

        Principal principal = new Principal();
        principal.setId(user.getId());
        principal.setToken(token.getToken());
        principal.setExpiresAt(token.getExpiresAt());
        principal.setName(user.getName());

        /*foreach (UserRole item in appRoles)
        {
            if (principal.AppRoles == null) principal.AppRoles = new HashSet<AppRole>();
            principal.AppRoles.Add(item.Role);
        }

        if (this._config.Refresh) token.ExpiresAt = DateTime.UtcNow.AddMinutes(this._config.Lifetime);
        */
        return principal;
    }

    public Principal Touch(LoginProviderUser profile){
        UserInfoCriteria criteria = new UserInfoCriteria();
        criteria.setEmail(profile.getEmail());
        List<UserInfo> users = apiContext.getDatabaseRepository().getUserInfoDao().getWithCriteria(criteria).toList();
        UserInfo userInfo = null;
        if(users.size()>0)userInfo = users.get(0);
        final Credential credential = new Credential();
        credential.setId(UUID.randomUUID());
        credential.setCreationTime(new Date());
        credential.setStatus(1);
        credential.setLastUpdateTime(new Date());
        credential.setProvider((int) TokenValidatorFactoryImpl.LoginProvider.FACEBOOK.getValue());
        credential.setSecret(profile.getSecret());
        if(userInfo == null) {
            userInfo = new UserInfo();
            userInfo.setName((String)profile.getName());
            userInfo.setVerified_email(profile.getIsVerified());
            userInfo.setEmail(profile.getEmail());
            userInfo.setCreated(new Date());
            userInfo.setLastloggedin(new Date());
            userInfo.setAuthorization_level(new Short("1"));
            userInfo.setUsertype(new Short("1"));
            userInfo = apiContext.getDatabaseRepository().getUserInfoDao().createOrUpdate(userInfo);
            credential.setPublicValue(userInfo.getName());
            credential.setUserInfo(userInfo);
            apiContext.getDatabaseRepository().getCredentialDao().createOrUpdate(credential);
        }
        else {
            userInfo.setLastloggedin(new Date());
            Set<Credential> credentials = userInfo.getCredentials();
            if(credentials.contains(credential)){
                Credential oldCredential = credentials.stream().filter(item->credential.getProvider().equals(item.getProvider())).findFirst().get();
                credential.setId(oldCredential.getId());
            }
            else{
                credential.setUserInfo(userInfo);
                credential.setId(UUID.randomUUID());
                credential.setPublicValue(userInfo.getName());
                apiContext.getDatabaseRepository().getCredentialDao().createOrUpdate(credential);
                userInfo.getCredentials().add(credential);
            }
            userInfo = apiContext.getDatabaseRepository().getUserInfoDao().createOrUpdate(userInfo);
        }

        UserToken userToken = new UserToken();
        userToken.setUser(userInfo);
        userToken.setIssuedAt(new Date());
        userToken.setToken(UUID.randomUUID());
        userToken.setExpiresAt(addADay(new Date()));
        apiContext.getDatabaseRepository().getUserTokenDao().create(userToken);
        return Touch(userToken.getToken());
    }

    private Date addADay(Date date){
        Date dt = new Date();
        Calendar c = Calendar.getInstance();
        c.setTime(dt);
        c.add(Calendar.DATE, 1);
        dt = c.getTime();
        return dt;
    }
}