/*
 * Copyright (C) 2013-2016 Universit√© Toulouse 3 Paul Sabatier
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Affero General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Affero General Public License for more details.
 *
 *     You should have received a copy of the GNU Affero General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.tsaap.directory

import org.apache.commons.lang.builder.HashCodeBuilder

class UserRole implements Serializable {

    User user
    Role role

    boolean equals(other) {
        if (!(other instanceof UserRole)) {
            return false
        }

        other.user?.id == user?.id &&
                other.role?.id == role?.id
    }

    int hashCode() {
        def builder = new HashCodeBuilder()
        if (user) builder.append(user.id)
        if (role) builder.append(role.id)
        builder.toHashCode()
    }

    static UserRole get(long userId, long roleId) {
        find 'from UserRole where user.id=:userId and role.id=:roleId',
                [userId: userId, roleId: roleId]
    }

    static UserRole create(User user, Role role, boolean flush = false) {
        new UserRole(user: user, role: role).save(flush: flush, insert: true)
    }

    static boolean remove(User user, Role role, boolean flush = false) {
        UserRole instance = UserRole.findByUserAndRole(user, role)
        if (!instance) {
            return false
        }

        instance.delete(flush: flush)
        true
    }

    static void removeAll(User user) {
        executeUpdate 'DELETE FROM UserRole WHERE user=:user', [user: user]
    }

    static void removeAll(Role role) {
        executeUpdate 'DELETE FROM UserRole WHERE role=:role', [role: role]
    }

    static mapping = {
        id composite: ['role', 'user']
        version false
    }
}
