Imports DigitalData.GUIs.Common
Imports DigitalData.Modules.Base
Imports DigitalData.Modules.Logging
Imports DigitalData.Modules.ZooFlow

Public Class SearchRunner
    Inherits BaseClass

    Private Const SEARCH_FACT_DATE_DEFAULT As String = "ADDED_WHEN"

    Private Const CREATED_TOMORROW As String = "TOMORROW"
    Private Const CREATED_TODAY As String = "ECM_CREATED_TODAY"
    Private Const CREATED_YESTERDAY As String = "ECM_CREATED_YESTERDAY"
    Private Const CREATED_LAST_7_DAYS As String = "ECM_CREATED_LAST7DAYS"
    Private Const CREATED_YEAR_CURRENT As String = "ECM_CREATED_YEAR_CURRENT"
    Private Const CREATED_YEAR_LAST As String = "ECM_CREATED_YEAR_LAST"
    Private Const CREATED_MONTH_CURR As String = "ECM_CREATED_MONTH_CURRENT"
    Private Const CREATED_MONTH_LAST As String = "ECM_CREATED_MONTH_LAST"

    Public Enum DateConstraint
        Today
        Tomorrow
        Yesterday
        Last7Days
        CurrentMonth
        LastMonth
        CurrentYear
        LastYear
    End Enum

    Public Event NeedsRefresh As EventHandler(Of Integer)

    Private _ActiveDateConstraint As String = String.Empty
    Public ReadOnly Property ActiveDateConstraint As String
        Get
            Return _ActiveDateConstraint
        End Get
    End Property

    Private _ActiveDateAttribute As String = SEARCH_FACT_DATE_DEFAULT
    Public ReadOnly Property ActiveDateAttribute As String
        Get
            Return _ActiveDateAttribute
        End Get
    End Property

    Public Property BaseSearchSQL As String
    Public Property ExplicitDate As Boolean = False

    Private Environment As Environment
    Private SearchTitle As String

    Public Sub New(pLogConfig As LogConfig, pEnvironment As Environment, pSearchTitle As String)
        MyBase.New(pLogConfig)
        Environment = pEnvironment
        SearchTitle = pSearchTitle
    End Sub

    Public Async Function Run(pSearchTerm As String) As Threading.Tasks.Task(Of SearchResult)
        Return Await Run(pSearchTerm, Nothing, Nothing)
    End Function

    Public Async Function Run(pSearchTerm As String, pDateFrom As Date, pDateTo As Date) As Threading.Tasks.Task(Of SearchResult)
        If pDateFrom.Equals(Date.MinValue) = False Then
            ExplicitDate = True
        End If

        Dim oSearchTerm = pSearchTerm
        Dim oParams = New DocumentResultList.Params() With {
            .WindowGuid = SearchTitle,
            .WindowTitle = GetResultWindowString(oSearchTerm),
            .OperationModeOverride = Modules.ZooFlow.Constants.OperationMode.ZooFlow,
            .ProfileGuid = 35452,
            .ColumnNames = New DocumentResultList.ColumnNames With {
                .ObjectIdColumn = "DocID"
            },
            .ShowBackNavigation = False
        }

        Dim oP3 = $"{_ActiveDateAttribute}~{_ActiveDateConstraint}"

        If ExplicitDate Then
            Dim oDate2 As Date
            If pDateTo.Equals(Date.MinValue) Then
                oDate2 = pDateTo
            Else
                oDate2 = pDateFrom
            End If
            Dim oProc = $"EXEC PRIDB_SEARCH_ADD_USR_DATE {My.Application.User.UserId},'{pDateFrom}','{oDate2}'"
            If Await My.Database.ExecuteNonQueryIDBAsync(oProc) = True Then
                oP3 = $"{_ActiveDateAttribute}~DATEPART"
            End If
        End If

        Dim oSQL = $"EXEC PRIDB_SEARCH_TEXT_GET_RESULTS {My.Application.User.UserId},'{oSearchTerm}','{oP3}'"

        If Await My.Database.ExecuteNonQueryIDBAsync(oSQL) = True Then
            Dim oDTDocResult = Await My.Database.GetDatatableIDBAsync(BaseSearchSQL)
            If oDTDocResult.Rows.Count > 0 Then
                oParams.Results.Add(New DocumentResultList.DocumentResult() With {
                    .Title = SearchTitle,
                    .Datatable = oDTDocResult
                })

                If oDTDocResult.Rows.Count = 1 Then
                    oParams.ShowFileList = False
                End If

                Dim oForm As New frmDocumentResultList(My.LogConfig, Environment, oParams)

                ' TODO: Implement, not needed right now
                'AddHandler oForm.NeedsRefresh, AddressOf Form_NeedsRefresh

                oForm.Show()

                Return New SearchResult With {
                    .OK = True
                }
            Else
                'bsiStatus.Caption = "No Results"
                Return New SearchResult With {
                    .OK = False,
                    .ErrorMessage = "No Results"
                }
            End If
        Else
            'bsiStatus.Caption = "Error in FlowSearch - Check Your log"
            Return New SearchResult With {
                .OK = False,
                .ErrorMessage = "Error in FlowSearch - Check Your log"
            }
        End If
    End Function



    Private Function GetResultWindowString(SearchContent As String) As String
        If SearchContent <> String.Empty Then
            If My.Application.User.Language = State.UserState.LANG_DE_DE Then

                Return $"Suche Nach '{SearchContent}'"
            Else
                Return $"Search For '{SearchContent}'"
            End If
        Else
            If My.Application.User.Language = State.UserState.LANG_DE_DE Then
                Return $"Suche Datumsbegrenzt"
            Else
                Return $"Search via date"
            End If
        End If
    End Function

    Public Sub SetDateConstraint()
        _ActiveDateConstraint = String.Empty
    End Sub

    Public Sub SetDateConstraint(pConstraintName As String)
        _ActiveDateConstraint = pConstraintName
    End Sub

    Public Sub SetDateConstraint(pConstraint As DateConstraint)
        Select Case pConstraint
            Case DateConstraint.Today
                _ActiveDateConstraint = CREATED_TODAY

            Case DateConstraint.Yesterday
                _ActiveDateConstraint = CREATED_YESTERDAY

            Case DateConstraint.Tomorrow
                _ActiveDateConstraint = CREATED_TOMORROW

            Case DateConstraint.Last7Days
                _ActiveDateConstraint = CREATED_LAST_7_DAYS

            Case DateConstraint.CurrentMonth
                _ActiveDateConstraint = CREATED_MONTH_CURR

            Case DateConstraint.LastMonth
                _ActiveDateConstraint = CREATED_MONTH_LAST

            Case DateConstraint.CurrentYear
                _ActiveDateConstraint = CREATED_YEAR_CURRENT

            Case DateConstraint.LastYear
                _ActiveDateConstraint = CREATED_YEAR_LAST

            Case Else
                _ActiveDateAttribute = String.Empty

        End Select
    End Sub

    Public Sub SetDateAttribute(pAttributeName As String)
        _ActiveDateAttribute = pAttributeName
    End Sub

    Public Sub SetDateAttribute()
        _ActiveDateAttribute = SEARCH_FACT_DATE_DEFAULT
    End Sub

    Public Class SearchResult
        Public OK As Boolean
        Public ErrorMessage As String
    End Class
End Class