'##############################################################################

' Author: Kevin Koch

' Description:  This class represents a web service providing functionality

'              regarding Orders. The Web service is locked down and secured

'              through its Web.config file residing in the /ws/ directory.

'               Authentication is provided via a custom soap header, which must

'              be present in each method invocation.

'##############################################################################

Imports System.Web.Services

Imports System.Web.Security

Imports System.Web.Services.Protocols

Imports System.Threading

' Class defining the SOAP Header security context for this Web Service

Public Class OrderSecurityContext

    Inherits SoapHeader

    Public WSToken As String

End Class

<WebService(Namespace:="http://tempuri.org/")> _

Public Class OrderWS

    Inherits System.Web.Services.WebService

#Region " Web Services Designer Generated Code "

    Public Sub New()

        MyBase.New()

        'This call is required by the Web Services Designer.

        InitializeComponent()

       'Add your own initialization code after the InitializeComponent() call

    End Sub

    'Required by the Web Services Designer

    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Web Services Designer

    'It can be modified using the Web Services Designer.

    'Do not modify it using the code editor.

    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

        components = New System.ComponentModel.Container()

    End Sub

    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)

        'CODEGEN: This procedure is required by the Web Services Designer

        'Do not modify it using the code editor.

        If disposing Then

            If Not (components Is Nothing) Then

                components.Dispose()

            End If

        End If

        MyBase.Dispose(disposing)

    End Sub

#End Region

    Public OrderSecurityCtx As OrderSecurityContext

    Private Const CLASS_NAME As String = "OrderWS"

    Private WebUtil As New WSUtil()

    '================================================================================================================================

   ' This method uses the SOAP Header parameters to determine the Web service consumer.

   ' If authenticated, the method creates a new customer order.

    ' The information regarding the order and the books contained in the order as passed to us from John's app in the OrderDs parameter

    '================================================================================================================================

    <WebMethod(), SoapHeader("OrderSecurityCtx", Required:=True)> _

    Public Function ConfirmOrder(ByVal OrderId As Int32, ByVal OrderDs As DataSet) As Int32

       Const METHOD_NAME As String = "ConfirmOrder"

        Try

            If WebUtil.Authenticate(OrderSecurityCtx) = False Then Throw New System.Security.SecurityException("Unauthorized access")

            ' Ensure the Id is valid

            Utils.Assert(OrderId)

            Dim OrderObj As New OrderServices()

            ' Complete the order and retrieve the customer Id who placed the order

            Dim CustIdDs As DataSet = OrderObj.ConfirmOrder(OrderId)

            ' Retrieve the full profile of the customer who placed this order and email them confirmation

            Dim CustObj As New CustomerServices()

            Dim CustDs As DataSet = CustObj.GetCustomerById(Convert.ToInt32(CustIdDs.Tables(0).Rows(0).Item(CustomerDb.FIELD_CUSTOMER_ID)))

           With CustDs.Tables(0).Rows(0)

                Dim EmailObj As New EmailUtil(OrderDs, .Item(CustomerDb.FIELD_EMAIL), .Item(CustomerDb.FIELD_FIRST_NAME) + " " + .Item(CustomerDb.FIELD_LAST_NAME))

                Dim asyncOpIsDone As New AutoResetEvent(False)

                ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf EmailObj.SendCompletedOrderConfirmation), asyncOpIsDone)

            End With

            Return OrderId

        Catch BizEx As BizTierException

            'Exception has already been logged, just throw it to the consumer

            Throw BizEx

        Catch DbEx As DbTierException

            'Exception has already been logged, just throw it to the consumer

            Throw DbEx

        Catch ex As Exception

            Log.WriteLogEntry(ex, Me.CLASS_NAME, METHOD_NAME)

            Throw New WSException(ex.Message, ex)

        End Try

    End Function

End Class