/*----------------------------------------------------------------------------------

// Copyright 2019 Huawei Technologies Co.,Ltd.

// 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.

//----------------------------------------------------------------------------------*/

using System;

using System.Collections.Generic;

using System.Text;



namespace OBS.Model

{

    public abstract class AbstractAccessControlList

    {

        private IList<Grant> grants;



        /// <summary>

        /// User or user group ACL

        /// </summary>

        /// <remarks>

        /// <para>

        /// Optional parameter

        /// </para>

        /// </remarks>

        public IList<Grant> Grants

        {

            get

            {



                return this.grants ?? (this.grants = new List<Grant>());

            }

            set { this.grants = value; }

        }







        /// <summary>

        /// Grant permissions to a user or user group (grantee).

        /// </summary>

        /// <param name="grantee"> Grantee name </param>

        /// <param name="permission">Permission information</param>

        public void AddGrant(Grantee grantee, PermissionEnum permission)

        {

            Grant grant = new Grant { };

            grant.Grantee = grantee;

            grant.Permission = permission;

            Grants.Add(grant);

        }



        /// <summary>

        /// Remove permissions from a grantee.

        /// </summary>

        /// <param name="grantee"> Grantee name </param>

        /// <param name="permission">Permission information</param>

        public void RemoveGrant(Grantee grantee, PermissionEnum permission)

        {

            foreach (Grant grant in Grants)

            {

                if (grant.Grantee.Equals(grantee) && grant.Permission == permission)

                {

                    Grants.Remove(grant);

                    break;

                }

            }

        }



        /// <summary>

        /// Remove all permissions from a grantee.

        /// </summary>

        /// <param name="grantee"> Grantee name </param>

        public void RemoveGrant(Grantee grantee)

        {

            IList<Grant> removeList = new List<Grant>();

            foreach (Grant grant in Grants)

            {

                if (grant.Grantee.Equals(grantee))

                {

                    removeList.Add(grant);

                }

            }

            foreach (Grant grant in removeList)

            {

                this.Grants.Remove(grant);

            }

        }

    }

}