/*
 * <copyright>
 * Copyright (c) 2003-2013 SETECH Inc.  All Rights Reserved.
 * 903 Industrial Drive, Murfreesboro, TN 37129.
 *
 * This file is part of SETECH MROVelocity Hub
 * </copyright>
 *
 * $Id$
 */
package com.setech.mrovelocityhub.services.security.model;

import java.util.List;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.springframework.security.core.GrantedAuthority;

import com.setech.mrovelocityhub.persistence.security.model.AuthorizationValue;

/**
 *
 * @version $Revision$
 * @since   7.0.0
 */
public class SessionUserGrantedAuthority implements GrantedAuthority {

    private static final long serialVersionUID = -3937521692967089258L;

    private String      authority;
    private List<Long>  values;

    /**
     * @param authority
     */
    public SessionUserGrantedAuthority(String authority, List<Long> values) {
        this.authority = authority;
        this.values    = values;
    }

    /* (non-Javadoc)
     * @see org.springframework.security.core.GrantedAuthority#getAuthority()
     */
    @Override
    public String getAuthority() {
        return authority;
    }

    /**
     * @return
     */
    public List<Long> getValues() {
        return values;
    }

    /**
     * @param value
     * @return
     */
    public boolean hasValue(Long value) {
        // No value specified and no values provided for the role,
        // then the user is permitted with no restrictions.
        if(value == null && values.size() == 0)
            return true;
        // if value is null but there are values to restrict the
        // authority, then indicate that the match failed.
        if(value == null)
            return false;
        // If the values contains the ALL indicator, no need to then
        // check the specified value, allow it.
        if(values.contains(AuthorizationValue.ALL))
            return true;
        // check if the value exists in the collection.
        return values.contains((Long)value);
    }

    /**
     * @param values
     * @return
     */
    public boolean hasAllValues(List<Long> values) {
        // if the input is null but values contain values,
        // then indicate that specified values were not
        // found.
        if(values == null && this.values.size() != 0)
            return false;
        // if the input contains the ALL indicator
        if(values.contains(AuthorizationValue.ALL))
            return true;
        // check all specific values match
        for(Long value : values) {
            if(!hasValue(value))
                return false;
        }
        return true;
    }

    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return new ToStringBuilder(this)
            .append("authority", authority)
            .append("values", values)
            .toString();
    }
}