/**
 * Copyright 2010 JBoss Inc
 *
 * 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 org.drools.guvnor.server.security;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.drools.repository.RulesRepository;
import org.drools.repository.security.PermissionManager;
import org.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;

@Name("org.drools.guvnor.server.security.RoleBasedPermissionStore")
@AutoCreate
public class RoleBasedPermissionStore {

	@In
	public RulesRepository repository;


	public RoleBasedPermissionStore() {
	}


	public List<RoleBasedPermission> getRoleBasedPermissionsByUserName(
			String userName) {
		PermissionManager permissionManager = new PermissionManager(repository);
		List<RoleBasedPermission> permissions = new ArrayList<RoleBasedPermission>();
		Map<String, List<String>> perms = permissionManager
				.retrieveUserPermissions(userName);
		for (String roleType : perms.keySet()) {
			if(RoleTypes.ADMIN.equals(roleType)) {
				permissions.add(new RoleBasedPermission(userName, RoleTypes.ADMIN,
						null, null));
			}

			List<String> permissionsPerRole = perms.get(roleType);
			for (String permissionPerRole : permissionsPerRole) {
				if (permissionPerRole.startsWith("package=")) {
					String packageName = permissionPerRole.substring("package="
							.length());
					permissions.add(new RoleBasedPermission(userName, roleType,
							packageName, null));
				} else if (permissionPerRole.startsWith("category=")) {
					String categoryPath = permissionPerRole
							.substring("category=".length());
					permissions.add(new RoleBasedPermission(userName, roleType,
							null, categoryPath));
				}
			}
		}

		return permissions;
	}


	public void addRoleBasedPermissionForTesting(String userName, RoleBasedPermission rbp) {
		PermissionManager permissionManager = new PermissionManager(repository);
		Map<String, List<String>> perms = permissionManager
				.retrieveUserPermissions(userName);
		Object permissionsPerRole = perms.get(rbp.getRole());
		if (permissionsPerRole != null) {
			if (rbp.getPackageName() != null) {
				((List<String>) permissionsPerRole).add("package="
						+ rbp.getPackageName());
			} else if (rbp.getCategoryPath() != null) {
				((List<String>) permissionsPerRole).add("category="
						+ rbp.getPackageName());
			}

		} else {
			List<String> perm = new ArrayList<String>();
			if (rbp.getPackageName() != null) {
				perm.add("package=" + rbp.getPackageName());
			} else if (rbp.getCategoryPath() != null) {
				perm.add("category=" + rbp.getCategoryPath());
			}
			perms.put(rbp.getRole(), perm);
		}

		permissionManager.updateUserPermissions(userName, perms);
	}

}