/*
 * Copyright 2014 NAVER Corp.
 *
 * 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.navercorp.pinpoint.web.filter.agent;

import org.apache.commons.lang3.StringUtils;

/**
 * @author emeroad
 */
public class AgentFilterFactory {

    private final String fromAgent;
    private final String toAgent;

    public AgentFilterFactory(String fromAgent, String toAgent) {
        this.fromAgent = fromAgent;
        this.toAgent = toAgent;
    }

    public AgentFilter createFromAgentFilter() {
        return createAgentFilter(fromAgent);
    }

    public AgentFilter createToAgentFilter() {
        return createAgentFilter(toAgent);
    }

    private AgentFilter createAgentFilter(String agentId) {
        if (StringUtils.isBlank(agentId)) {
            return SkipAgentFilter.SKIP_FILTER;
        }
        return new DefaultAgentFilter(agentId);
    }

    public boolean fromAgentExist() {
        return isNotBlank(fromAgent);
    }

    public boolean toAgentExist() {
        return isNotBlank(toAgent);
    }

    private boolean isNotBlank(String toAgent) {
        return StringUtils.isNotBlank(toAgent);
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("AgentFilterFactory{");
        sb.append("fromAgent='").append(fromAgent).append('\'');
        sb.append(", toAgent='").append(toAgent).append('\'');
        sb.append('}');
        return sb.toString();
    }
}