/*******************************************************************************
 * ============LICENSE_START====================================================
 * * org.onap.aai
 * * ===========================================================================
 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * * Copyright © 2017 Amdocs
 * * ===========================================================================
 * * 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.
 * * ============LICENSE_END====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package com.att.cadi.filter;

import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;

import com.att.cadi.Access;
import com.att.cadi.Access.Level;
import com.att.cadi.config.Get;

/*
 * A private method to query the Filter config and if not exists, return the default.  This
 * cleans up the initialization code.
 */
class FCGet implements Get {
	/**
	 * 
	 */
	private final Access access;
	private FilterConfig filterConfig;
	private ServletContext context;

	public FCGet(Access access, ServletContext context, FilterConfig filterConfig) {
		this.access = access;
		this.context = context;
		this.filterConfig = filterConfig;
	}

	public String get(String name, String def, boolean print) {
		String str = null;
		// Try Server Context First
		if(context!=null) {
			str = context.getInitParameter(name);
		}
		
		// Try Filter Context next
		if(str==null && filterConfig != null) {
			str = filterConfig.getInitParameter(name);
		}
		
		if(str==null) {
			str = access.getProperty(name, def);
		}
		// Take def if nothing else
		if(str==null) {
			str = def;
			// don't log defaults
		} else {
			str = str.trim(); // this is vital in Property File based values, as spaces can hide easily
			if(print) {
				access.log(Level.INFO,"Setting", name, "to", str);
			}
		}
		return str;
	}
}