Imports DigitalData.Modules.Base
Imports DigitalData.Modules.Database
Imports DigitalData.Modules.Logging
Imports DigitalData.Modules.Language

Public Class SearchLoader
    Inherits BaseClass

    Private Config As Config
    Private Database As MSSQLServer

    Public Searches As New List(Of Search)
    Public Parameters As New List(Of SearchParameter)

    Public Enum ReturnTypeEnum
        Undefined
        Table
        TreeView
    End Enum

    Public Enum DataTypeEnum
        Undefined
        [Boolean]
        [String]
        [Integer]
        [Date]
    End Enum

    Public Enum ItemTypeEnum
        Undefined
        List
        SQL
    End Enum

    Public Sub New(pLogConfig As LogConfig, pConfig As Config, pDatabase As MSSQLServer)
        MyBase.New(pLogConfig)
        Config = pConfig
        Database = pDatabase
    End Sub

    Public Sub LoadSearches()
        Try
            Dim oSQL = Config.SearchSQL
            Dim oTable = Database.GetDatatable(oSQL)

            For Each oRow As DataRow In oTable.Rows
                Dim oSearchId = oRow.ItemEx("GUID", 0)
                Dim oParams = Parameters.
                    Where(Function(param) param.SearchId = oSearchId).
                    ToList()

                Searches.Add(New Search With {
                    .Id = oSearchId,
                    .Title = oRow.ItemEx("TITLE", String.Empty),
                    .Description = oRow.ItemEx("CAPTION", String.Empty),
                    .ReturnType = GetReturnType(oRow.ItemEx("RETURN_TYPE", String.Empty)),
                    .SQLCommand = oRow.ItemEx("EXEC_SQL", String.Empty),
                    .Parameters = oParams
                })
            Next
        Catch ex As Exception
            Logger.Error(ex)
            Throw ex

        End Try
    End Sub

    Public Function GetItemType(pTypeString As String) As ItemTypeEnum
        Select Case pTypeString
            Case "LIST"
                Return ItemTypeEnum.List
            Case "SQL"
                Return ItemTypeEnum.SQL
            Case Else
                Return ItemTypeEnum.Undefined
        End Select
    End Function

    Public Function GetReturnType(pTypeString As String) As ReturnTypeEnum
        Select Case pTypeString
            Case "Table"
                Return ReturnTypeEnum.Table
            Case "TreeView"
                Return ReturnTypeEnum.TreeView
            Case Else
                Return ReturnTypeEnum.Undefined
        End Select
    End Function

    Public Function GetDataType(pTypeString As String) As DataTypeEnum
        Select Case pTypeString
            Case "BIT"
                Return DataTypeEnum.Boolean
            Case "VARCHAR"
                Return DataTypeEnum.String
            Case "INT"
                Return DataTypeEnum.Integer
            Case "DATE"
                Return DataTypeEnum.Date
            Case Else
                Return DataTypeEnum.Undefined
        End Select
    End Function

    Public Sub LoadSearchParameters()
        Dim oSQL As String = $"SELECT * FROM TBMON_PROFILE_PARAM WHERE ACTIVE = 1 ORDER BY SEQUENCE"
        Dim oTable As DataTable = Database.GetDatatable(oSQL)
        Dim oParameters As New List(Of SearchParameter)

        For Each oRow As DataRow In oTable.Rows
            oParameters.Add(New SearchParameter With {
                .Id = oRow.ItemEx("GUID", 0),
                .Title = oRow.ItemEx("CAPTION", String.Empty),
                .Description = oRow.ItemEx("DESCRIPTION", String.Empty),
                .DataType = GetDataType(oRow.ItemEx("DATA_TYPE", "VARCHAR")),
                .ItemString = oRow.ItemEx("ITEMS", String.Empty),
                .ItemType = GetItemType(oRow.ItemEx("ITEM_TYPE", String.Empty)),
                .Required = oRow.ItemEx("REQUIRED", True),
                .PatternTitle = oRow.ItemEx("PATTERN", String.Empty),
                .SearchId = oRow.ItemEx("PROFILE_ID", 0)
            })
        Next

        Parameters = oParameters
    End Sub

    Public Class Search
        Public Id As Integer
        Public Title As String
        Public Description As String
        Public SQLCommand As String
        Public ReturnType As ReturnTypeEnum

        Public Parameters As List(Of SearchParameter)

        Public Overrides Function ToString() As String
            Return Title
        End Function
    End Class

    Public Class SearchParameter
        Public Id As Integer
        Public Title As String
        Public PatternTitle As String
        Public Description As String
        Public DataType As DataTypeEnum
        Public ItemString As String
        Public ItemType As ItemTypeEnum
        Public Required As Boolean
        Public SearchId As Integer

        Public ReadOnly Property HasItems As Boolean
            Get
                Return ItemType <> ItemTypeEnum.Undefined
            End Get
        End Property

        Public Overrides Function ToString() As String
            Return Title
        End Function
    End Class

End Class