org.ng200.openolympus.services.UserService.java Source code

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Here is the source code for org.ng200.openolympus.services.UserService.java

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/**
 * The MIT License
 * Copyright (c) 2014-2015 Nick Guletskii
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.ng200.openolympus.services;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.List;
import java.util.stream.Collectors;

import org.ng200.openolympus.SecurityExpressionConstants;
import org.ng200.openolympus.dto.UserRanking;
import org.ng200.openolympus.model.Role;
import org.ng200.openolympus.model.User;
import org.ng200.openolympus.repositories.ContestParticipationRepository;
import org.ng200.openolympus.repositories.ContestTimeExtensionRepository;
import org.ng200.openolympus.repositories.SolutionRepository;
import org.ng200.openolympus.repositories.UserRepository;
import org.ng200.openolympus.repositories.VerdictRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Sort;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Service;

@Service
public class UserService {

    @Autowired
    private UserRepository userRepository;

    @Autowired
    private VerdictRepository verdictRepository;

    @Autowired
    private RoleService roleService;

    @Autowired
    private SolutionRepository solutionRepository;

    @Autowired
    private ContestParticipationRepository contestParticipationRepository;
    @Autowired
    private ContestTimeExtensionRepository contestTimeExtensionRepository;

    public UserService() {

    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public long countUnapprovedUsers() {
        return this.userRepository.countUnapproved();
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN + SecurityExpressionConstants.OR + '('
            + SecurityExpressionConstants.IS_USER + SecurityExpressionConstants.AND
            + SecurityExpressionConstants.NO_CONTEST_CURRENTLY + ')')
    public long countUsers() {
        return this.userRepository.count();
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public void deleteUser(final User user) {
        // TODO: use SQL
        this.solutionRepository.findByUser(user).forEach(solution -> {
            this.verdictRepository.delete(this.verdictRepository.findBySolution(solution));
            this.solutionRepository.delete(solution);
        });
        this.contestParticipationRepository.delete(this.contestParticipationRepository.findByUser(user));
        this.contestTimeExtensionRepository.delete(this.contestTimeExtensionRepository.findByUser(user));
        this.userRepository.delete(user);
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public void deleteUsers(List<User> users) {
        // TODO: use SQL
        users.forEach(this::deleteUser);
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public List<User> findAFewUsersWithNameContaining(final String name) {
        return this.userRepository.findFirst30Like("%" + name + "%");
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN + SecurityExpressionConstants.OR + '('
            + SecurityExpressionConstants.IS_USER + SecurityExpressionConstants.AND
            + SecurityExpressionConstants.NO_CONTEST_CURRENTLY + ')')
    public List<UserRanking> getArchiveRankPage(final long page, final long pageSize) {
        return this.userRepository.getRankPage(pageSize, (page - 1) * pageSize).stream()
                .map(arr -> new UserRanking((BigInteger) arr[2],
                        this.userRepository.findOne(((BigInteger) arr[0]).longValue()), (BigDecimal) arr[1]))
                .collect(Collectors.toList());
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public List<User> getUnapprovedUsers(int pageNumber, int pageSize) {
        final PageRequest request = new PageRequest(pageNumber - 1, pageSize, Sort.Direction.DESC, "firstNameMain");
        return this.userRepository.findUnapproved(request);
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public User getUserById(final Long id) {
        return this.userRepository.findOne(id);
    }

    public User getUserByUsername(final String username) {
        return this.userRepository.findByUsername(username);
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public List<User> getUsersAlphabetically(final Integer pageNumber, final int pageSize) {
        final PageRequest request = new PageRequest(pageNumber - 1, pageSize, Sort.Direction.DESC, "firstNameMain");
        return this.userRepository.findAll(request).getContent();
    }

    @PreAuthorize(SecurityExpressionConstants.IS_ADMIN)
    public boolean isUserApproved(User user) {
        return user.getRoles().contains(this.roleService.getRoleByName(Role.USER));
    }

    public User saveUser(User user) {
        return user = this.userRepository.save(user);
    }
}