Imports System.IO
Imports System.Xml
Imports System.Xml.Schema

Imports System.Data
Imports System.Data.SqlTypes
Imports System.Data.SqlClient

Public Class Action

#Region "Members"

    Private Shared _actionSingleton As Action

    Private _actionType As ActionType
    Private _creatorTgNr As String
    Private _sourceApplication As String
    Private _parameters As Parameter()
    Private _validationSuccess As Boolean

#End Region

#Region "Public methods"

    '''<summary>Lädt externes Xml file für automatisierte Aktionen</summary>
    '''<param name="xmlImportFile">Das Xml File mit den entsprechenden Parametern</param>
    Public Sub Load(ByVal xmlImportFile As FileInfo)
        Try
            'Validate source
            'If Not IsValid(xmlImportFile) Then
            '    'xml file is invalid
            '    Throw New ActionException(1, "Specified file " & xmlImportFile.FullName & " hasn't got a valid strucure which is specified by his schema")
            'End If
            Dim doc As New XmlDocument()
            Try
                doc.Load(xmlImportFile.FullName)
            Catch ex As Exception
                'MsgBox(ex.Message)
            End Try

            'read header elements
            _actionType = CType(doc.SelectSingleNode("action/actionId").InnerText, ActionType)
            _creatorTgNr = doc.SelectSingleNode("action/creatorTg").InnerText
            _sourceApplication = doc.SelectSingleNode("action/sourceApplication").InnerText

            Dim RootNode As XmlElement = doc.DocumentElement
            Dim nodeList As XmlNodeList = RootNode.ChildNodes
            If nodeList.Count > 0 Then
                'set correct array size
                ReDim _parameters(nodeList.Count - 1)

                Dim value As String
                Dim name As String
                Dim parameterCounter As Integer = 0

                Dim i As Integer

                For i = 0 To nodeList.Count - 1
                    value = nodeList.Item(i).InnerText
                    name = nodeList.Item(i).LocalName
                    'append new parameter
                    _parameters(parameterCounter) = New Parameter(name, value)

                    parameterCounter = parameterCounter + 1
                Next
            End If
            'Rel 4.02
        Catch ex As Exception
            Throw ex
            TKBLib.Errorhandling.TraceHelper.Msg("EdokaLib.Common.Action.Load", ex.Message & ex.StackTrace, TraceLevel.Error)
        End Try
    End Sub

    '''<summary>Returns a parameter identified by his name</summary>
    '''<param name="paramName"></param>
    '''<returns></returns>
    Public Function GetParameterByName(ByVal paramName As String) As Parameter
        Try
            Dim param As Parameter
            For Each param In _parameters
                If param.Name = paramName Then
                    Return param
                End If
            Next
        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EdokaLib.Common.Action.GetParameterByName", ex.Message & ex.StackTrace, TraceLevel.Error)
            Throw ex
        End Try
    End Function

    '''<summary>Zerstört die statische Instanz</summary>
    Public Sub Destroy()
        Try
            _actionSingleton = Nothing
        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EdokaLib.Common.Action.Destroy", ex.Message & ex.StackTrace, TraceLevel.Error)
            Throw ex
        End Try
    End Sub
#End Region

#Region "Private methods/subs"

    '''<summary>Überprüft ob das Xml file dem angegebenen Schema entspricht</summary>
    '''<param name="xmlImportFile"></param>
    '''<returns></returns>
    Private Function IsValid(ByVal xmlImportFile As FileInfo) As Boolean
        Dim reader As New XmlTextReader(xmlImportFile.FullName)
        'We pass the xmltextreader into the xmlvalidatingreader
        'This will validate the xml doc with the schema file
        'NOTE the xml file it self points to the schema file

        Dim validator As New XmlValidatingReader(reader)
        Try
            'First we create the xmltextreader


            ' Set the validation event handler
            'AddHandler validator.ValidationEventHandler, _
            'AddressOf ValidationCallback
            _validationSuccess = True            'make sure to reset the success var

            ' Read XML data
            While (validator.Read)
            End While
            'Close the reader.
            validator.Close()

            reader.Close()

            'The validationeventhandler is the only thing that would 
            'set m_Success to false
            Return _validationSuccess
        Catch ex As Exception
            validator.Close()
            reader.Close()

            _validationSuccess = False
            TKBLib.Errorhandling.TraceHelper.Msg("EdokaLib.Common.Action.IsValid", ex.Message & ex.StackTrace, TraceLevel.Warning)
            _validationSuccess = False
            Return _validationSuccess
            Throw ex
        End Try
    End Function

    Private Sub ValidationCallback(ByVal sender As Object, ByVal args As ValidationEventArgs)
        Try
            'Display the validation error.  This is only called on error
            _validationSuccess = False           'Validation failed
            Debug.Write("Validation error: " + args.Message + Environment.NewLine)
            Throw New ActionException(1, "Fehler bei der Validierung")
        Catch ex As Exception
            Throw ex
        End Try
    End Sub

#End Region

#Region "Properties"

    Public Shared ReadOnly Property Action() As Action
        Get
            If IsNothing(_actionSingleton) Then
                _actionSingleton = New Action()
            End If

            Return _actionSingleton
        End Get
    End Property
    Public ReadOnly Property valtionOK() As Boolean
        Get
            Return _validationSuccess
        End Get
    End Property

    Public ReadOnly Property ActionType() As ActionType
        Get
            Return _actionType
        End Get
    End Property
    Public ReadOnly Property CreatorTgNr() As String
        Get
            Return _creatorTgNr
        End Get
    End Property
    Public ReadOnly Property SourceApplication() As String
        Get
            Return _sourceApplication
        End Get
    End Property
    Public ReadOnly Property Parameters() As Parameter()
        Get
            Return _parameters
        End Get
    End Property

   
#End Region

End Class

#Region "ActionException"

Public Class ActionException
    Inherits Exception

    Private _number As Integer
    Private _description As String

    Public Sub New(ByVal number As Integer, ByVal description As String)
        _number = number
        _description = description
    End Sub

    Public Overrides ReadOnly Property Message() As String
        Get
            Return _description
        End Get
    End Property

    Public ReadOnly Property Number() As Integer
        Get
            Return _number
        End Get
    End Property

End Class

#End Region

'''<summary>Struct für einzelne Parameter</summary>
Public Structure Parameter


    Private _value As String
    Private _name As String


    Public Sub New(ByVal name As String, ByVal value As String)
        Try
            _value = value
            _name = name

        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EdokaLib.Common.Parameter.New", ex.Message & ex.StackTrace, TraceLevel.Error)
            Throw ex
        End Try
    End Sub


    Public ReadOnly Property Value() As String
        Get
            Return _value
        End Get
    End Property
    Public ReadOnly Property Name() As String
        Get
            Return _name
        End Get
    End Property

End Structure

Public Enum ActionType
    AnzeigePartnerdossier = 1
    DokumentAnzeige = 2
    DokumentErstellung = 3
    DokumentBearbeitung = 4
    Statusmutation = 5
    HostDokumentAnzeige = 6
    UVMDokumentanzeige = 7
    ZVDokumentanzeige = 8
    DokLoeschung = 9
    AusHyperlink = 10
End Enum