/*
 * Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 * 
 *  http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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.Xml.Serialization;
using System.Text;
using System.IO;

using Amazon.Runtime;
using Amazon.Runtime.Internal;

namespace Amazon.S3.Model
{
    /// <summary>
    /// The parameters to request upload of a part in a multipart upload operation.
    /// </summary>
    /// <remarks>
    /// <para>
    /// If PartSize is not specified then the rest of the content from the file
    /// or stream will be sent to Amazon S3.
    /// </para>
    /// <para>
    /// You must set either the FilePath or InputStream.  If FilePath is set then the FilePosition
    /// property must be set.
    /// </para>
    /// </remarks>
    public partial class UploadPartRequest : AmazonWebServiceRequest
    {
        private Stream inputStream;
        private string bucketName;
        private string key;
        private int? partNumber;
        private string uploadId;
        private long? partSize;
        private string md5Digest;

        private ServerSideEncryptionCustomerMethod serverSideCustomerEncryption;
        private string serverSideEncryptionCustomerProvidedKey;
        private string serverSideEncryptionCustomerProvidedKeyMD5;

        private string filePath;
        private long? filePosition;
        private bool useChunkEncoding = true;

        private bool lastPart;
        private RequestPayer requestPayer;
        
        internal int IVSize { get; set; }

        /// <summary>
        /// Caller needs to set this to true when uploading the last part. This property only needs to be set
        /// when using the AmazonS3EncryptionClient.
        /// </summary>
        public bool IsLastPart
        {
            get { return this.lastPart; }
            set { this.lastPart = value; }
        }

        /// <summary>
        /// Input stream for the request; content for the request will be read from the stream.
        /// </summary>
        public Stream InputStream
        {
            get { return this.inputStream; }
            set { this.inputStream = value; }
        }

        // Check to see if Body property is set
        internal bool IsSetInputStream()
        {
            return this.inputStream != null;
        }

        /// <summary>
        /// The name of the bucket containing the object to receive the part.
        /// </summary>
        public string BucketName
        {
            get { return this.bucketName; }
            set { this.bucketName = value; }
        }

        // Check to see if Bucket property is set
        internal bool IsSetBucketName()
        {
            return this.bucketName != null;
        }

        /// <summary>
        /// The key of the object.
        /// </summary>
        public string Key
        {
            get { return this.key; }
            set { this.key = value; }
        }

        // Check to see if Key property is set
        internal bool IsSetKey()
        {
            return this.key != null;
        }

        /// <summary>
        /// Part number of part being uploaded.
        ///  
        /// </summary>
        public int PartNumber
        {
            get { return this.partNumber.GetValueOrDefault(); }
            set { this.partNumber = value; }
        }

        // Check to see if PartNumber property is set
        internal bool IsSetPartNumber()
        {
            return this.partNumber.HasValue;
        }

        /// <summary>
        /// The size of the part to be uploaded.
        /// </summary>
        public long PartSize
        {
            get { return this.partSize.GetValueOrDefault(); }
            set { this.partSize = value; }
        }

        /// <summary>
        /// Checks if PartSize property is set.
        /// </summary>
        /// <returns>true if PartSize property is set.</returns>
        internal bool IsSetPartSize()
        {
            return this.partSize.HasValue;
        }

        /// <summary>
        /// Upload ID identifying the multipart upload whose part is being uploaded.
        ///  
        /// </summary>
        public string UploadId
        {
            get { return this.uploadId; }
            set { this.uploadId = value; }
        }

        // Check to see if UploadId property is set
        internal bool IsSetUploadId()
        {
            return this.uploadId != null;
        }

        /// <summary>
        /// An MD5 digest for the part.
        /// </summary>
        public string MD5Digest
        {
            get { return this.md5Digest; }
            set { this.md5Digest = value; }
        }

        /// <summary>
        /// The Server-side encryption algorithm to be used with the customer provided key.
        ///  
        /// </summary>
        public ServerSideEncryptionCustomerMethod ServerSideEncryptionCustomerMethod
        {
            get { return this.serverSideCustomerEncryption; }
            set { this.serverSideCustomerEncryption = value; }
        }

        // Check to see if ServerSideEncryptionCustomerMethod property is set
        internal bool IsSetServerSideEncryptionCustomerMethod()
        {
            return this.serverSideCustomerEncryption != null && this.serverSideCustomerEncryption != ServerSideEncryptionCustomerMethod.None;
        }

        /// <summary>
        /// The base64-encoded encryption key for Amazon S3 to use to encrypt the object
        /// <para>
        /// Using the encryption key you provide as part of your request Amazon S3 manages both the encryption, as it writes 
        /// to disks, and decryption, when you access your objects. Therefore, you don't need to maintain any data encryption code. The only 
        /// thing you do is manage the encryption keys you provide.
        /// </para>
        /// <para>
        /// When you retrieve an object, you must provide the same encryption key as part of your request. Amazon S3 first verifies 
        /// the encryption key you provided matches, and then decrypts the object before returning the object data to you.
        /// </para>
        /// <para>
        /// Important: Amazon S3 does not store the encryption key you provide.
        /// </para>
        /// </summary>
        public string ServerSideEncryptionCustomerProvidedKey
        {
            get { return this.serverSideEncryptionCustomerProvidedKey; }
            set { this.serverSideEncryptionCustomerProvidedKey = value; }
        }

        /// <summary>
        /// Checks if ServerSideEncryptionCustomerProvidedKey property is set.
        /// </summary>
        /// <returns>true if ServerSideEncryptionCustomerProvidedKey property is set.</returns>
        internal bool IsSetServerSideEncryptionCustomerProvidedKey()
        {
            return !System.String.IsNullOrEmpty(this.serverSideEncryptionCustomerProvidedKey);
        }

        /// <summary>
        /// The MD5 of the customer encryption key specified in the ServerSideEncryptionCustomerProvidedKey property. The MD5 is
        /// base 64 encoded. This field is optional, the SDK will calculate the MD5 if this is not set.
        /// </summary>
        public string ServerSideEncryptionCustomerProvidedKeyMD5
        {
            get { return this.serverSideEncryptionCustomerProvidedKeyMD5; }
            set { this.serverSideEncryptionCustomerProvidedKeyMD5 = value; }
        }

        /// <summary>
        /// Checks if ServerSideEncryptionCustomerProvidedKeyMD5 property is set.
        /// </summary>
        /// <returns>true if ServerSideEncryptionCustomerProvidedKey property is set.</returns>
        internal bool IsSetServerSideEncryptionCustomerProvidedKeyMD5()
        {
            return !System.String.IsNullOrEmpty(this.serverSideEncryptionCustomerProvidedKeyMD5);
        }	

        /// <summary>
		/// <para>
        /// Full path and name of a file from which the content for the part is retrieved.
		/// </para>
        /// <para>
        /// For WinRT and Windows Phone this property must be in the form of "ms-appdata:///local/file.txt".
        /// </para>
        /// </summary>
        public string FilePath
        {
            get { return this.filePath; }
            set { this.filePath = value; }
        }

        /// <summary>
        /// Checks if the FilePath property is set.
        /// </summary>
        /// <returns>true if FilePath property is set.</returns>
        internal bool IsSetFilePath()
        {
            return !string.IsNullOrEmpty(this.filePath);
        }

        /// <summary>
        /// Position in the file specified by FilePath from which to retrieve the content of the part. 
        /// This field is required when a file path is specified. It is ignored when using the InputStream property.
        /// </summary>
        public long FilePosition
        {
            get { return this.filePosition.GetValueOrDefault(); }
            set { this.filePosition = value; }
        }

        /// <summary>
        /// If this value is set to true then a chunked encoding upload will be used for the request.
        /// Default: true.
        /// </summary>
        public bool UseChunkEncoding
        {
            get { return this.useChunkEncoding; }
            set { this.useChunkEncoding = value; }
        }

        /// <summary>
        /// Checks if the FilePosition property is set.
        /// </summary>
        /// <returns>true if FilePosition property is set.</returns>
        internal bool IsSetFilePosition()
        {
            return this.filePosition.HasValue;
        }

        /// <summary>
        /// Checks if the MD5Digest property is set.
        /// </summary>
        /// <returns>true if Md5Digest property is set.</returns>
        internal bool IsSetMD5Digest()
        {
            return !string.IsNullOrEmpty(this.md5Digest);
        }

        /// <summary>
        /// Attach a callback that will be called as data is being sent to the AWS Service.
        /// </summary>
        public EventHandler<Amazon.Runtime.StreamTransferProgressArgs> StreamTransferProgress
        {
            get
            {
                return ((Amazon.Runtime.Internal.IAmazonWebServiceRequest)this).StreamUploadProgressCallback;
            }
            set
            {
                ((Amazon.Runtime.Internal.IAmazonWebServiceRequest)this).StreamUploadProgressCallback = value;
            }
        }


        /// <summary>
        /// Overriden to turn off sending SHA256 header.
        /// </summary>
        protected override bool IncludeSHA256Header
        {
            get
            {
                return false;
            }
        }

        /// <summary>
        /// Overriden to turn on Expect 100 continue.
        /// </summary>
        protected override bool Expect100Continue
        {
            get
            {
                return true;
            }
        }

        /// <summary>
        /// Confirms that the requester knows that she or he will be charged for the list objects request.
        /// Bucket owners need not specify this parameter in their requests.
        /// </summary>
        public RequestPayer RequestPayer
        {
            get { return this.requestPayer; }
            set { this.requestPayer = value; }
        }

        /// <summary>
        /// Checks to see if RequetsPayer is set.
        /// </summary>
        /// <returns>true, if RequestPayer property is set.</returns>
        internal bool IsSetRequestPayer()
        {
            return requestPayer != null;
        }
    }
}