/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.ranger.plugin.util;

import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

import org.apache.commons.collections.MapUtils;
import org.apache.commons.lang.StringUtils;


public class SearchFilter {
	public static final String SERVICE_TYPE    = "serviceType";   // search, sort
	public static final String SERVICE_TYPE_ID = "serviceTypeId"; // search, sort
	public static final String SERVICE_NAME    = "serviceName";   // search, sort
	public static final String SERVICE_ID      = "serviceId";     // search, sort
	public static final String POLICY_NAME     = "policyName";    // search, sort
	public static final String POLICY_ID       = "policyId";      // search, sort
	public static final String IS_ENABLED      = "isEnabled";     // search
	public static final String IS_RECURSIVE    = "isRecursive";   // search
	public static final String TAG_SERVICE_NAME = "tagServiceName";  // search
	public static final String TAG_SERVICE_ID  = "tagServiceId";  // search
	public static final String USER            = "user";          // search
	public static final String GROUP           = "group";         // search
	public static final String ROLE            = "role";         // search
	public static final String RESOURCE_PREFIX = "resource:";     // search
	public static final String RESOURCE_MATCH_SCOPE = "resourceMatchScope"; // search - valid values: "self", "ancestor", "self_or_ancestor"
	public static final String POL_RESOURCE    = "polResource";   // search
	public static final String POLICY_NAME_PARTIAL = "policyNamePartial";    // search, sort
	public static final String CREATE_TIME     = "createTime";    // sort
	public static final String UPDATE_TIME     = "updateTime";    // sort
	public static final String START_INDEX     = "startIndex";
	public static final String PAGE_SIZE       = "pageSize";
	public static final String SORT_BY         = "sortBy";
	public static final String RESOURCE_SIGNATURE = "resourceSignature:";     // search
	public static final String POLICY_TYPE     = "policyType";    // search
	public static final String POLICY_PRIORITY     = "policyPriority";    // search
    public static final String GUID		   = "guid"; //search
    public static final String POLICY_LABEL     = "policyLabel";    // search
    public static final String POLICY_LABELS_PARTIAL     = "policyLabelsPartial";    // search
    public static final String POLICY_LABEL_ID       = "policyLabelId";      // search, sort
    public static final String ZONE_ID               = "zoneId";      // search, sort
    public static final String ZONE_NAME             = "zoneName";      // search, sort
	public static final String ROLE_ID               = "roleId";      // search, sort
	public static final String ROLE_NAME             = "roleName";      // search, sort
	public static final String GROUP_NAME            = "groupName";      // search, sort
	public static final String USER_NAME             = "userName";      // search, sort
	public static final String ROLE_NAME_PARTIAL     = "roleNamePartial";      // search
	public static final String GROUP_NAME_PARTIAL    = "groupNamePartial";      // search
	public static final String USER_NAME_PARTIAL     = "userNamePartial";      // search

	public static final String TAG_DEF_ID                = "tagDefId";            // search
	public static final String TAG_DEF_GUID              = "tagDefGuid";          // search
	public static final String TAG_TYPE                  = "tagType";             // search
	public static final String TAG_ID                    = "tagId";               // search
	public static final String TAG_GUID                  = "tagGuid";             // search
	public static final String TAG_RESOURCE_ID           = "resourceId";          // search
	public static final String TAG_RESOURCE_GUID         = "resourceGuid";        // search
	public static final String TAG_RESOURCE_SERVICE_NAME = "resourceServiceName"; // search
	public static final String TAG_RESOURCE_SIGNATURE    = "resourceSignature";   // search
	public static final String TAG_MAP_ID                = "tagResourceMapId";    // search
	public static final String TAG_MAP_GUID              = "tagResourceMapGuid";  // search

	public static final String SERVICE_NAME_PARTIAL      = "serviceNamePartial";

	public static final String PLUGIN_HOST_NAME          = "pluginHostName";
	public static final String PLUGIN_APP_TYPE           = "pluginAppType";
	public static final String PLUGIN_ENTITY_TYPE        = "pluginEntityType";
	public static final String PLUGIN_IP_ADDRESS         = "pluginIpAddress";
	public static final String CLUSTER_NAME              = "clusterName";
	public static final String FETCH_ZONE_UNZONE_POLICIES        = "fetchZoneAndUnzonePolicies";
	public static final String FETCH_TAG_POLICIES        = "fetchTagPolicies";

	private Map<String, String> params;
	private int                 startIndex;
	private int                 maxRows    = Integer.MAX_VALUE;
	private boolean             getCount   = true;
	private String              sortBy;
	private String              sortType;

	public SearchFilter() {
		this(null);
	}

	public SearchFilter(String name, String value) {
		setParam(name, value);
	}

	public SearchFilter(Map<String, String> values) {
		setParams(values);
	}

	public Map<String, String> getParams() {
		return params;
	}

	public void setParams(Map<String, String> params) {
		this.params = params;
	}

	public String getParam(String name) {
		return params == null ? null : params.get(name);
	}

	public void setParam(String name, String value) {
		if(StringUtils.isEmpty(name) || StringUtils.isEmpty(value)) {
			return;
		}

		if(params == null) {
			params = new HashMap<String, String>();
		}

		params.put(name, value);
	}
	public void removeParam(String name) {

		params.remove(name);
	}

	public Map<String, String> getParamsWithPrefix(String prefix, boolean stripPrefix) {
		Map<String, String> ret = null;

		if(prefix == null) {
			prefix = StringUtils.EMPTY;
		}

		if(params != null) {
			for(Map.Entry<String, String> e : params.entrySet()) {
				String name = e.getKey();

				if(name.startsWith(prefix)) {
					if(ret == null) {
						ret = new HashMap<>();
					}

					if(stripPrefix) {
						name = name.substring(prefix.length());
					}

					ret.put(name, e.getValue());
				}
			}
		}

		return ret;
	}

	public boolean isEmpty() {
		return MapUtils.isEmpty(params);
	}
	
	public int getStartIndex() {
		return startIndex;
	}
	
	public void setStartIndex(int startIndex) {
		this.startIndex = startIndex;
	}

	public int getMaxRows() {
		return maxRows;
	}

	public void setMaxRows(int maxRows) {
		this.maxRows = maxRows;
	}
	
	public boolean isGetCount() {
		return getCount;
	}

	public void setGetCount(boolean getCount) {
		this.getCount = getCount;
	}
	
	public String getSortBy() {
		return sortBy;
	}

	public void setSortBy(String sortBy) {
		this.sortBy = sortBy;
	}
	
	public String getSortType() {
		return sortType;
	}

	public void setSortType(String sortType) {
		this.sortType = sortType;
	}

	@Override
	public boolean equals(Object object) {
		if (object == null || !(object instanceof SearchFilter)) {
			return false;
		}
		SearchFilter that = (SearchFilter)object;
		return Objects.equals(params, that.params);
	}
	
	@Override
	public int hashCode() {
		return Objects.hash(params);
	}
	
	@Override
	public String toString( ) {
		StringBuilder sb = new StringBuilder();

		toString(sb);

		return sb.toString();
	}

	public StringBuilder toString(StringBuilder sb) {
		sb.append("SearchFilter={");

		sb.append("getCount={").append(getCount).append("} ");
		sb.append("maxRows={").append(maxRows).append("} ");
		sb.append("params={").append(params).append("} ");
		sb.append("sortBy={").append(sortBy).append("} ");
		sb.append("sortType={").append(sortType).append("} ");
		sb.append("startIndex={").append(startIndex).append("} ");
		sb.append("}");

		return sb;
	}
}