Imports System.Data
Imports System.Data.SqlClient
Imports DigitalData.Modules.Base

Public Class ElementModel
    Inherits BaseModel

    Public Sub New(pState As State)
        MyBase.New(pState)
    End Sub

    Private Function ToElement(pRow As DataRow) As EnvelopeDocumentElement
        Return New EnvelopeDocumentElement() With {
            .Id = pRow.ItemEx("GUID", 0),
            .DocumentId = pRow.ItemEx("DOCUMENT_ID", 0),
            .ReceiverId = pRow.ItemEx("RECEIVER_ID", 0),
            .ElementType = [Enum].Parse(GetType(Constants.ElementType), pRow.ItemEx("ELEMENT_TYPE", Constants.ElementType.Signature.ToString)),
            .X = pRow.ItemEx("POSITION_X", 0.0),
            .Y = pRow.ItemEx("POSITION_Y", 0.0),
            .Width = pRow.ItemEx("WIDTH", 0.0),
            .Height = pRow.ItemEx("HEIGHT", 0.0),
            .Page = pRow.ItemEx("PAGE", 0)
        }
    End Function

    Public Function ElementsExist(pEnvelopeId As Integer, pReceiverId As Integer) As Boolean
        Try
            Dim oSql = $"SELECT COUNT(*) FROM [dbo].[TBSIG_DOCUMENT_RECEIVER_ELEMENT] T
                JOIN TBSIG_ENVELOPE_DOCUMENT T2 ON T.DOCUMENT_ID = T2.GUID
                WHERE T.RECEIVER_ID = {pReceiverId} AND T2.ENVELOPE_ID = {pEnvelopeId}"
            Dim oElementCount As Integer = Database.GetScalarValue(oSql)

            Return oElementCount > 0

        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function

    Public Function List(pDocumentId As Integer) As List(Of EnvelopeDocumentElement)
        Try
            Dim oSql = $"SELECT * FROM [dbo].[TBSIG_DOCUMENT_RECEIVER_ELEMENT] WHERE DOCUMENT_ID = {pDocumentId} ORDER BY PAGE ASC"
            Dim oTable = Database.GetDatatable(oSql)

            Return oTable?.Rows.Cast(Of DataRow).
                Select(AddressOf ToElement).
                ToList()

        Catch ex As Exception
            Logger.Error(ex)
            Return Nothing
        End Try
    End Function

    Public Function Insert(pElement As EnvelopeDocumentElement) As Boolean
        Try
            Dim oSql = "INSERT INTO [dbo].[TBSIG_DOCUMENT_RECEIVER_ELEMENT]
                   ([DOCUMENT_ID]
                   ,[RECEIVER_ID]
                   ,[ELEMENT_TYPE]
                   ,[POSITION_X]
                   ,[POSITION_Y]
                   ,[WIDTH]
                   ,[HEIGHT]
                   ,[REQUIRED]
                   ,[READ_ONLY]
                   ,[STATUS]
                   ,[PAGE])
                VALUES
                   (@DOCUMENT_ID
                   ,@RECEIVER_ID
                   ,@ELEMENT_TYPE
                   ,@POSITION_X
                   ,@POSITION_Y
                   ,@WIDTH
                   ,@HEIGHT
                   ,@REQUIRED
                   ,@READ_ONLY
                   ,@STATUS
                   ,@PAGE)"

            Dim oCommand As New SqlCommand(oSql)
            oCommand.Parameters.Add("DOCUMENT_ID", SqlDbType.NVarChar).Value = pElement.DocumentId
            oCommand.Parameters.Add("RECEIVER_ID", SqlDbType.NVarChar).Value = pElement.ReceiverId
            oCommand.Parameters.Add("ELEMENT_TYPE", SqlDbType.NVarChar).Value = pElement.ElementType
            oCommand.Parameters.Add("POSITION_X", SqlDbType.Float).Value = pElement.X
            oCommand.Parameters.Add("POSITION_Y", SqlDbType.Float).Value = pElement.Y
            oCommand.Parameters.Add("WIDTH", SqlDbType.Float).Value = pElement.Width
            oCommand.Parameters.Add("HEIGHT", SqlDbType.Float).Value = pElement.Height
            oCommand.Parameters.Add("REQUIRED", SqlDbType.Bit).Value = pElement.Required
            oCommand.Parameters.Add("READ_ONLY", SqlDbType.Bit).Value = pElement.ReadOnly
            oCommand.Parameters.Add("STATUS", SqlDbType.NVarChar).Value = pElement.Status.ToString
            oCommand.Parameters.Add("PAGE", SqlDbType.Int).Value = pElement.Page

            If Database.ExecuteNonQuery(oCommand) Then
                pElement.Id = GetElementId(pElement)
                Return True
            Else
                Return False
            End If

        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function

    Public Function Update(pElement As EnvelopeDocumentElement) As Boolean
        Try
            Dim oSql = "UPDATE [dbo].[TBSIG_DOCUMENT_RECEIVER_ELEMENT]
                   SET [POSITION_X] = @POSITION_X
                      ,[POSITION_Y] = @POSITION_Y
                      ,[WIDTH] = @WIDTH
                      ,[HEIGHT] = @HEIGHT
                 WHERE GUID = @GUID"

            Dim oCommand As New SqlCommand(oSql)
            oCommand.Parameters.Add("GUID", SqlDbType.NVarChar).Value = pElement.Id
            oCommand.Parameters.Add("POSITION_X", SqlDbType.Float).Value = pElement.X
            oCommand.Parameters.Add("POSITION_Y", SqlDbType.Float).Value = pElement.Y
            oCommand.Parameters.Add("WIDTH", SqlDbType.Float).Value = pElement.Width
            oCommand.Parameters.Add("HEIGHT", SqlDbType.Float).Value = pElement.Height

            Return Database.ExecuteNonQuery(oCommand)

        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function

    Private Function GetElementId(pElement As EnvelopeDocumentElement) As Integer
        Try
            Return Database.GetScalarValue($"SELECT MAX(GUID) FROM TBSIG_DOCUMENT_RECEIVER_ELEMENT 
                WHERE DOCUMENT_ID = {pElement.DocumentId} AND RECEIVER_ID = {pElement.ReceiverId}")

        Catch ex As Exception
            Logger.Error(ex)
            Return Nothing
        End Try
    End Function

    Public Function DeleteElement(pElement As EnvelopeDocumentElement) As Boolean
        Try
            Dim oSql = $"DELETE FROM TBSIG_DOCUMENT_RECEIVER_ELEMENT WHERE GUID = {pElement.Id}"
            Return Database.ExecuteNonQuery(oSql)
        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function

    Public Function DeleteElements(pReceiverId As Integer, pDocumentId As Integer, pTransaction As SqlTransaction) As Boolean
        Try
            Dim oSql = $"DELETE FROM TBSIG_DOCUMENT_RECEIVER_ELEMENT WHERE RECEIVER_ID = {pReceiverId} AND DOCUMENT_ID = {pDocumentId}"
            Return Database.ExecuteNonQuery(oSql, pTransaction)
        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function

    Public Function DeleteElements(pDocumentId As Integer, pTransaction As SqlTransaction) As Boolean
        Try
            Dim oSql = $"DELETE FROM TBSIG_DOCUMENT_RECEIVER_ELEMENT WHERE DOCUMENT_ID = {pDocumentId}"
            Return Database.ExecuteNonQuery(oSql, pTransaction)
        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function
End Class