/*
 * Copyright (c) 2002-2012 Alibaba Group Holding Limited.
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.citrus.turbine.auth.impl;

import static com.alibaba.citrus.util.ObjectUtil.*;

import com.alibaba.citrus.util.ToStringBuilder;
import com.alibaba.citrus.util.ToStringBuilder.MapBuilder;

/**
 * 代表一组patterns和grants授权的组合。
 *
 * @author Michael Zhou
 */
public class AuthMatch {
    private final static AuthGrant[] NO_GRANTS = new AuthGrant[0];
    private final AuthPattern pattern;
    private final AuthGrant[] grants;

    public AuthMatch(String pattern, AuthGrant[] grants) {
        this.pattern = new AuthTargetPattern(pattern);
        this.grants = defaultIfNull(grants, NO_GRANTS);
    }

    public AuthPattern getPattern() {
        return pattern;
    }

    public AuthGrant[] getGrants() {
        return grants;
    }

    @Override
    public String toString() {
        return toString(-1);
    }

    public String toString(int matchedGrantIndex) {
        MapBuilder mb = new MapBuilder();

        mb.append("pattern", pattern);

        if (matchedGrantIndex < 0 || matchedGrantIndex >= grants.length) {
            mb.append("grants", grants);
        } else {
            mb.append("grants[" + matchedGrantIndex + "]", grants[matchedGrantIndex]);
        }

        return new ToStringBuilder().append("Match").append(mb).toString();
    }
}