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

// 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 OBS.Internal;

using System;

using System.Collections.Generic;

using System.Text;



namespace OBS.Model

{

    /// <summary>

    /// Data transmission status

    /// </summary>

    public class TransferStatus : EventArgs

    {

        private long _newlyTransferredBytes;

        private long _transferredBytes;

        private long _totalBytes;

        private double _intervalSeconds;

        private double _totalSeconds;

        private IList<BytesUnit> _instantaneousBytes;



        internal TransferStatus(long newlyTransferredBytes, long transferredBytes, long totalBytes,

            double intervalSeconds, double totalSeconds)

        {

            this._newlyTransferredBytes = newlyTransferredBytes;

            this._transferredBytes = transferredBytes;

            this._totalBytes = totalBytes;

            this._intervalSeconds = intervalSeconds;

            this._totalSeconds = totalSeconds;

        }



        internal void SetInstantaneousBytes(IList<BytesUnit> instantaneousBytes)

        {

            this._instantaneousBytes = instantaneousBytes;

        }



        /// <summary>

        /// Instantaneous rate

        /// </summary>

        public double InstantaneousSpeed

        {

            get {

                if(this._instantaneousBytes != null)

                {

                    long instantaneousSpeed = 0;

                    foreach (BytesUnit item in this._instantaneousBytes)

                    {

                        instantaneousSpeed += item.Bytes;

                    }

                    return instantaneousSpeed;

                }

                return this._newlyTransferredBytes / this._intervalSeconds;

            }

        }



        /// <summary>

        /// Average rate

        /// </summary>

        public double AverageSpeed

        {

           get { return this._transferredBytes / this._totalSeconds; }

        }



        /// <summary>

        /// Transmission progress

        /// </summary>

        public int TransferPercentage

        {

            get {

                if(this._totalBytes < 0)

                {

                    return -1;

                }else if(this._totalBytes == 0)

                {

                    return 100;

                }

                return (int)((this._transferredBytes * 100) / this._totalBytes);

            }

        }



        /// <summary>

        /// Number of bytes transmitted since last progress refresh

        /// </summary>

        public long NewlyTransferredBytes

        {

            get { return this._newlyTransferredBytes; }

        }



        /// <summary>

        /// Number of bytes that have been transmitted

        /// </summary>

        public long TransferredBytes

        {

            get { return this._transferredBytes; }

        }



        /// <summary>

        /// Number of bytes being transmitted

        /// </summary>

        public long TotalBytes

        {

            get { return this._totalBytes; }

        }



    }

}