File download etc extension functions

//|---------------------------------------------------------------|

//|                     WEB API DATA STREAMING                    |

//|---------------------------------------------------------------|

//|                       Developed by Wonde Tadesse              |

//|                                  Copyright ©2014              |

//|---------------------------------------------------------------|

//|                     WEB API DATA STREAMING                    |

//|---------------------------------------------------------------|

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Net;

using System.Threading.Tasks;

using System.Web;

using System.Web.Http;

using System.Web.Http.Controllers;

using System.Web.Http.WebHost;

namespace WebAPIDataStreaming.Common

{

    /// <summary>

    /// File utility extension class

    /// </summary>

    public static class FileUtilityExtension

    {

        /// <summary>

        /// Get Context object

        /// </summary>

        /// <param name="controller">ApiController value</param>

        /// <returns>HttpContextWrapper object</returns>

        public static HttpContextWrapper GetContext(this ApiController controller)

        {

            return ((HttpContextWrapper)controller.Request.Properties["MS_HttpContext"]);

        }

        /// <summary>

        /// Get upload path

        /// </summary>

        /// <param name="controller">ApiController value</param>

        /// <returns>string value</returns>

        public static string GetUploadPath(this ApiController controller)

        {

            return controller.GetContext().Server.MapPath("~/Uploads");

        }

        /// <summary>

        /// Get Request object

        /// </summary>

        /// <param name="controller">ApiController value</param>

        /// <returns>HttpRequestBase object</returns>

        public static HttpRequestBase Request(this ApiController controller)

        {

            return controller.GetContext().Request;

        }

        /// <summary>

        /// Get request content length

        /// </summary>

        /// <param name="controller">ApiController value</param>

        /// <returns>long value</returns>

        public static long GetRequestContentLength(this ApiController controller)

        {

            return controller.GetContext().Request.ContentLength;

        }

        /// <summary>

        /// Get Download Path

        /// </summary>

        /// <param name="controller">ApiController value</param>

        /// <returns>String value</returns>

        public static string GetDownloadPath(this ApiController controller)

        {

            return controller.GetContext().Server.MapPath("~/Downloads");

        }

        /// <summary>

        /// Write stream to a file

        /// </summary>

        /// <param name="inputStream">InputStream value</param>

        /// <param name="filePath">FilePath valye</param>

        /// <returns>true/false</returns>

        public static bool WriteStream(this Stream inputStream, string filePath)

        {

            try

            {

                using (FileStream outPutStream = new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.None))

                {

                    byte[] buffer = new byte[1048575]; // 1MB buffer

                    while (true)

                    {

                        int read = inputStream.Read(buffer, 0, buffer.Length);

                        if (read > 0)

                            outPutStream.Write(buffer, 0, read);

                        else

                            return true;

                    }

                }

            }

            catch (Exception)

            {

                return false;

            }

        }

        /// <summary>

        /// Write stream to a file

        /// </summary>

        /// <param name="httpPostedFile">HttpPostedFile value</param>

        /// <param name="filePath">FilePath value</param>

        /// <returns>true/false</returns>

        public static bool WriteStream(this HttpPostedFileBase httpPostedFile, string filePath)

        {

            try

            {

                return httpPostedFile.InputStream.WriteStream(filePath);

            }

            catch (Exception)

            {

                return false;

            }

        }

        /// <summary>

        /// Read stream value

        /// </summary>

        /// <param name="fileStream">FileStream to be read</param>

        /// <param name="filePath">FilePath value</param>

        /// <returns>Stream object</returns>

        public static Stream ReadStream(this FileInfo fileInfo)

        {

            int bufferSize = 1048575; // 1MB

            return new FileStream(fileInfo.FullName, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize);;

        }

    }

}