com.daon.identityx.rest.model.pojo.PermissionSelector Maven / Gradle / Ivy

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/*
* Copyright Daon.
*
* 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.daon.identityx.rest.model.pojo;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import com.daon.identityx.rest.model.def.ResourcePaths;


public class PermissionSelector {

	public enum SelectorNamesEnum {
		WITHIN,
		GENERIC,
		WITHIN_CURRENT_USER,
		WITHIN_CURRENT_INSTANCE,
	}
	
	private String selectorType = null;
	private RestResource resource = null;
	
	protected final static Map selectorTypes;
	protected final static Map selectorEntities;
	static {
        Map aMap = new HashMap();
        aMap.put(SelectorNamesEnum.WITHIN.toString(), "__Within");
        aMap.put(SelectorNamesEnum.WITHIN_CURRENT_USER.toString(), "__WithinCurrentUser");
        aMap.put(SelectorNamesEnum.WITHIN_CURRENT_INSTANCE.toString(), "__WithinCurrentInstance");
        aMap.put(SelectorNamesEnum.GENERIC.toString(), "*");  // generic must be *
        selectorTypes = Collections.unmodifiableMap(aMap);
        
        aMap = new HashMap();
        aMap.put(ResourcePaths.defaultTenantPath, "Tenant");
        aMap.put(ResourcePaths.defaultApplicationPath, "Application");
        selectorEntities = Collections.unmodifiableMap(aMap);

    }
	
	/*
	 * Creates a generic selector type (*) - includes all entities
	 */
	public PermissionSelector() { 
		this.selectorType = SelectorNamesEnum.GENERIC.toString();
	}
	

	/*
	 * Creates a subset selector type - includes all entities associated with the resource specified
	 * If a tenant is specified, the permission that includes this permissionSelector will only be applied to entities belonging to the tenant
	 * Possible values: a Tenant or a Application 
	 */
	public PermissionSelector(RestResource resource) { 
		if (resource == null || resource.getHref() == null) throw new IllegalArgumentException();
		
		String parts[] = resource.getHref().split("/"); 
		if (parts.length < 3) {
			throw new IllegalArgumentException("Bad href");
		}
		String entity = parts[parts.length - 2];
		if (!selectorEntities.keySet().contains(entity)) {
			throw new IllegalArgumentException("Entity type not allowed or bad href");
		}
		
		this.selectorType = SelectorNamesEnum.WITHIN.toString();
		this.resource = new RestResource(resource.getHref());		

	}

	
	
	public String getSelectorType() {
		return selectorType;
	}
	public void setSelectorType(String selectorType) {
		if (selectorTypes.containsKey(selectorType)) {
			this.selectorType = selectorType;
		}
		else {
			throw new IllegalArgumentException("A value of " + selectorType + " is invalid");
		}
	}
	public RestResource getResource() {
		return resource;
	}
	public void setResource(RestResource resource) {
		this.resource = resource;
	}

	public String toString() {
		
		if (this.selectorType.equals("GENERIC")) return "*";

		if (!selectorTypes.keySet().contains(selectorType)) {
			throw new IllegalStateException();
		}		
		
		if (this.selectorType.equals("WITHIN") && (resource == null || resource.getHref() == null)) {
			throw new IllegalStateException();
		}
		
		if (resource != null && resource.getHref() != null) {
		
			String parts[] = resource.getHref().split("/"); 
			if (parts.length < 3) {
				throw new IllegalStateException();
			}
			String entity = parts[parts.length - 2];
			if (!selectorEntities.keySet().contains(entity)) {
				throw new IllegalStateException();
			}
			
			String entityId = parts[parts.length - 1];
			return selectorTypes.get(selectorType) + selectorEntities.get(entity) + "(" + entityId + ")"; 
		}
		return selectorTypes.get(selectorType);
	}
}