AssetModel.cs

using System;
using System.IO;
using System.Net.Http;
using Contentstack.Management.Core.Abstractions;
using Contentstack.Management.Core.Utils;

namespace Contentstack.Management.Core.Models
{
    public class AssetModel: IUploadInterface
    {
        public string Title { get; set; }
        public string Description { get; set; }
        public string ParentUID { get; set; }
        public string Tags { get; set; }
        public string FileName { get; set; }
        public string ContentType { get; set; }

        internal ByteArrayContent byteArray;

        public AssetModel(string fileName, string filePath, string contentType, string title = null, string description = null, string parentUID = null, string tags = null):
            this(fileName, File.OpenRead(filePath), contentType, title, description, parentUID, tags){ }

        public AssetModel(string fileName, Stream stream, string contentType, string title = null, string description = null, string parentUID = null, string tags = null):
            this(fileName, getBytes(stream), contentType, title, description, parentUID, tags){ }

        public AssetModel(string fileName, byte[] bytes, string contentType, string title = null, string description = null, string parentUID = null, string tags = null) :
            this(fileName, getByteArray(bytes), contentType, title, description, parentUID, tags){ }

        public AssetModel(string fileName, ByteArrayContent byteArray, string contentType, string title = null, string description = null, string parentUID = null, string tags = null)
        {
            if (fileName == null)
            {
                throw new ArgumentNullException("fileName", CSConstants.FileNameRequired);
            }
            if (byteArray == null)
            {
                throw new ArgumentNullException("byteArray", CSConstants.UploadContentRequired);
            }
            FileName = fileName;
            Title = title;
            Description = description;
            ParentUID = parentUID;
            Tags = tags;
            ContentType = contentType;
            this.byteArray = byteArray;
            this.byteArray.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(ContentType);

        }

        static private byte[] getBytes(Stream stream)
        {
            byte[] bytes = new byte[stream.Length];
            stream.Read(bytes, 0, (int)stream.Length);
            return bytes;
        }

        static private ByteArrayContent getByteArray(byte[] bytes)
        {
            return new ByteArrayContent(bytes);
        }

        public HttpContent GetHttpContent()
        {
            MultipartFormDataContent content = new MultipartFormDataContent();

            content.Add(byteArray, "asset[upload]", FileName);

            if (Title != null)
            {
                content.Add(new StringContent(Title), "asset[title]");
            }
            if (Description != null)
            {
                content.Add(new StringContent(Description), "asset[description]");
            }
            if (ParentUID != null)
            {
                StringContent contenst = new StringContent(ParentUID);
                //contenst.Headers.Remove("Content-Type");
                //contenst.Headers.ContentType.CharSet = string.Empty;
                //contenst.Headers.Add("Content-Type", content.Headers.ContentType.ToString());
                content.Add(contenst, "asset[parent_uid]");
            }
            if (Tags != null)
            {
                content.Add(new StringContent(Tags), "asset[tags]");
            }
            return content;
        }
    }
}