using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;

using Microsoft.BizTalk.Component.Interop;
using Microsoft.BizTalk.Message.Interop;

namespace Paulb.BizTalk {

    /// <summary>
    /// Custom pipeline component to change the received filename, 
    /// to something usefull.
    /// </summary>
    [ComponentCategory(CategoryTypes.CATID_PipelineComponent)]
    [ComponentCategory(CategoryTypes.CATID_Decoder)]
    [System.Runtime.InteropServices.Guid(FixFileName.ClassID)]
    public class FixFileName :
        Microsoft.BizTalk.Component.Interop.IBaseComponent,
        Microsoft.BizTalk.Component.Interop.IComponent,
        Microsoft.BizTalk.Component.Interop.IPersistPropertyBag,
        Microsoft.BizTalk.Component.Interop.IComponentUI {



        /// <summary>
        /// Default empty constructor.
        /// </summary>
        public FixFileName() {
            // ...
        }


        #region IComponent Members

        IBaseMessage IComponent.Execute(IPipelineContext pContext, IBaseMessage pInMsg) {

            // make sure we have something to work with
            if (pInMsg == null) {
                return pInMsg;
            }

            string receivedFileName = pInMsg.Context.Read("ReceivedFileName", "http://schemas.microsoft.com/BizTalk/2003/file-properties") as string;
            if (string.IsNullOrEmpty(receivedFileName)) {
                // nothing we can do
                return pInMsg;
            }

            string newFileName = Path.GetFileNameWithoutExtension(receivedFileName);

            pInMsg.Context.Promote("ReceivedFileName", "http://schemas.microsoft.com/BizTalk/2003/file-properties", newFileName);

            return pInMsg;
        }

        #endregion

        #region IPersistPropertyBag Members

        void IPersistPropertyBag.GetClassID(out Guid classID) {
            classID = new Guid(ClassID);
        }

        void IPersistPropertyBag.InitNew() {
            // no propertybag, so not implemented
        }

        void IPersistPropertyBag.Load(IPropertyBag propertyBag, int errorLog) {
            // no propertybag, so not implemented
        }

        void IPersistPropertyBag.Save(IPropertyBag propertyBag, bool clearDirty, bool saveAllProperties) {
            // no propertybag, so not implemented
        }

        #endregion

        #region IComponentUI Members

        [System.ComponentModel.Browsable(false)]
        IntPtr IComponentUI.Icon {
            get {
                // no fancy icon
                return IntPtr.Zero;
            }
        }

        IEnumerator IComponentUI.Validate(object projectSystem) {
            // no properties to validate
            return ((IEnumerable)(new string[0])).GetEnumerator();
        }

        #endregion


        #region IBaseComponent Members

        /// <summary>
        /// Gets the description.
        /// </summary>
        [System.ComponentModel.Browsable(false)]
        string IBaseComponent.Description {
            get { return "FixFileName Pipeline Component"; }
        }

        /// <summary>
        /// Gets the name.
        /// </summary>
        [System.ComponentModel.Browsable(false)]
        string IBaseComponent.Name {
            get { return "FixFileName Component"; }
        }

        /// <summary>
        /// Gets the version.
        /// </summary>
        [System.ComponentModel.Browsable(false)]
        string IBaseComponent.Version {
            get { return "1.0.0.0"; }
        }

        #endregion



        internal const string ClassID = "5C9DFEEC-D344-42ce-A087-98A4E5C6A91C";
    }
}