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/*
 * Copyright (c) 2017 simplity.org
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package org.simplity.tp;

import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.naming.directory.SearchControls;

import org.simplity.kernel.ApplicationError;
import org.simplity.kernel.comp.ValidationContext;
import org.simplity.kernel.value.Value;
import org.simplity.service.DataExtractor;
import org.simplity.service.ServiceContext;

import org.simplity.kernel.ldap.Exists;
import org.simplity.kernel.ldap.MultiAttrs;
import org.simplity.kernel.ldap.SingleAttr;

/**
 * @author simplity.org
 *
 */
public class LdapLookup extends Action {

	Exists exists;

	SingleAttr singleAttr;

	MultiAttrs multiAttrs;

	/**
	 * object instance for re-use
	 */
	private DataExtractor dataExtractor;

	@Override
	protected Value doAct(ServiceContext ctx) {
		boolean returnValue = false;

		try {

			if (exists != null) {
				exists.getfieldValues(ctx);
				returnValue = exists.doesObjectExist(ctx);
			}

			if (singleAttr != null) {
				singleAttr.getfieldValues(ctx);
				returnValue = singleAttr.getAttribute(ctx);
				if (ctx.isInError()) {
					return Value.VALUE_FALSE;
				}
			}

			if (multiAttrs != null) {
				multiAttrs.getfieldValues(ctx);
				returnValue = multiAttrs.getAttributes(ctx);
				if (ctx.isInError()) {
					return Value.VALUE_FALSE;
				}
			}

		} catch (NamingException e) {
			e.printStackTrace();
		}
		return Value.newBooleanValue(returnValue);
	}


	public NamingEnumeration getObjects(String base, String filter, SearchControls controls) {
		NamingEnumeration answer = null;
		DirContext ldapCtx = null;
		try {
			answer = ldapCtx.search(base, filter, controls);
		} catch (NamingException ne) {
			throw new ApplicationError("LdapRead : NamingException" + ne.getMessage());
		}
		return answer;
	}

	@Override
	public void getReady(int idx, Service service) {
		super.getReady(idx, service);
	}

	@Override
	public int validate(ValidationContext ctx, Service service) {
		int count = super.validate(ctx, service);
		if ((this.exists == null ^ singleAttr == null ^ multiAttrs == null)
				^ (this.exists == null && singleAttr == null && multiAttrs == null)) {
			ctx.addError("one of lookup types are required");
			count++;
		}
		return count;

	}


}