Imports DevExpress.XtraGrid.Views.Tile
Imports DigitalData.Modules.Database
Imports DigitalData.Modules.Logging

Public Class ChatControl
    Private ReadOnly IdColumn As String = "GUID"
    Private ReadOnly IdentificationColumn As String = "USER_FROM"
    Private ReadOnly MessageColumn As String = "MESSAGE_TEXT"
    Private ReadOnly DateColumn As String = "ADDED_WHEN"

    Private Db As MSSQLServer
    Private LogConfig As LogConfig
    Private Logger As Logger

    Private ReadOnly UsernameColorsDict As New Dictionary(Of String, Color)
    Private ReadOnly UsernameColors As New List(Of Color) From {
        Color.Purple,
        Color.Red,
        Color.LightBlue,
        Color.DarkSeaGreen
    }

    Public IDBObjectId As Long
    Public ConnStringIDB As String
    Public ConversationIdentification As String
    Public Username As String
    Public CurrentConversation As Long

    Public Sub New()
        InitializeComponent()
    End Sub

    Public Sub Init(LogConfig As LogConfig, ConnectionStringIDB As String, ConversationIdentification As String, Username As String)
        Me.LogConfig = LogConfig
        Me.Logger = LogConfig.GetLogger()
        Me.ConnStringIDB = ConnectionStringIDB
        Me.ConversationIdentification = ConversationIdentification
        Me.Username = Username

        Me.Db = New MSSQLServer(LogConfig, ConnStringIDB)
    End Sub

    Public Function GetConversations(IDBObjectId As Long)
        Dim oSQL As String = $"SELECT * FROM VWIDB_CONVERSATION WHERE IDB_OBJ_ID = {IDBObjectId} ORDER BY CONVERSATION_ID DESC"
        Dim oDatatable As DataTable = Db.GetDatatable(oSQL)
        Dim oConversations As New List(Of String)
        If Not IsNothing(oDatatable) Then
            If oDatatable.Rows.Count = 1 Then
                Dim oItem = oDatatable.Rows(0).Item("CONVERSATION_ID").ToString + "|" + oDatatable.Rows(0).Item("TITLE").ToString
                oConversations.Insert(0, oItem)
                CurrentConversation = oDatatable.Rows(0).Item("CONVERSATION_ID")
                LoadConversation(CurrentConversation)
            Else
                For Each oROW As DataRow In oDatatable.Rows
                    Dim oItem = oROW.Item("CONVERSATION_ID").ToString + "|" + oROW.Item("TITLE").ToString
                    oConversations.Insert(0, oItem)
                    If oROW.Item("CONVERSATION_STATE") = "Started" Then
                        CurrentConversation = oROW.Item("CONVERSATION_ID")
                        LoadConversation(CurrentConversation)
                    End If
                Next
            End If
        End If
        Return oConversations
    End Function

    Private Sub tsCBConversations_SelectedIndexChanged(sender As Object, e As EventArgs)
        'If tsCBConversations.SelectedIndex <> -1 Then
        '    Dim oValues As List(Of String) = tsCBConversations.Text.Split("|").ToList()
        '    CurrentConversation = oValues(0)
        '    LoadConversation(CurrentConversation)

        'End If
    End Sub
    Public Sub LoadConversation(ConversationId As Long)
        Dim oSQL As String = $"SELECT * FROM VWIDB_CONV_MESSAGES WHERE CONV_ID = {ConversationId} ORDER BY GUID"
        Dim oDatatable As DataTable = Db.GetDatatable(oSQL)
        BuildUsernameColorDict(oDatatable)
        oSQL = $"SELECT * FROM VWIDB_CONVERSATION WHERE CONVERSATION_ID = {ConversationId}"
        Dim oDatatable2 As DataTable = Db.GetDatatable(oSQL)
        GridChat.DataSource = ChatSource
        ChatSource.DataSource = oDatatable
        lblTitle.Text = oDatatable2.Rows(0).Item("TITLE")

    End Sub

    Public Sub NewMessage(MessageText As String)
        Try
            Dim oSQL As String = $"EXEC [PRIDB_NEW_CONVERSATION_MESSAGE] {CurrentConversation},'{MessageText}', '{ConversationIdentification}'"
            Dim oResult = Db.GetScalarValue(oSQL)
            LoadConversation(CurrentConversation)
            txtMessage.Text = String.Empty
            ChatView.MoveLast()
        Catch ex As Exception
            Logger.Error(ex)
        End Try
    End Sub

    Private Sub BuildUsernameColorDict(Datatable As DataTable)
        Dim oIndex = 0

        UsernameColorsDict.Clear()

        Datatable.AsEnumerable().
            Select(Function(Row) Row.Item(IdentificationColumn)).
            Distinct().ToList().
            ForEach(Sub(Name)
                        UsernameColorsDict.Add(Name, UsernameColors.Item(oIndex))
                        oIndex += 1
                    End Sub)
    End Sub

    Private Sub ChatView_CustomItemTemplate(sender As Object, e As TileViewCustomItemTemplateEventArgs) Handles ChatView.CustomItemTemplate
        Dim oRow As DataRow = ChatView.GetDataRow(e.RowHandle)
        Dim oUsername As String = oRow.Item(IdentificationColumn)

        If oUsername = ConversationIdentification Or oUsername = Username Then
            e.Template = e.Templates.Item("ChatRight")
        Else
            e.Template = e.Templates.Item("ChatLeft")
        End If
    End Sub

    Private Sub ChatView_ItemCustomize(sender As Object, e As TileViewItemCustomizeEventArgs) Handles ChatView.ItemCustomize
        Dim oRow As DataRow = ChatView.GetDataRow(e.RowHandle)

        Dim oUsername As String = oRow.Item(IdentificationColumn)
        Dim oMessage As String = oRow.Item(MessageColumn)
        Dim oColor As Color = UsernameColorsDict.Item(oUsername)

        If oUsername = ConversationIdentification Or oUsername = Username Then
            e.Item.AppearanceItem.Normal.BackColor = Color.PaleTurquoise
        End If
        e.Item.AppearanceItem.Focused.BackColor = Color.Turquoise
        e.Item.Item(IdentificationColumn).Appearance.Normal.ForeColor = oColor
    End Sub



    Private Sub txtMessage_KeyUp(sender As Object, e As KeyEventArgs)

    End Sub

    Private Sub SimpleButton1_Click(sender As Object, e As EventArgs) Handles btnSendMessage.Click
        If txtMessage.Text.Count > 0 Then
            NewMessage(txtMessage.Text)
        End If
    End Sub

    Private Sub TextBox1_KeyUp(sender As Object, e As KeyEventArgs) Handles txtMessage.KeyUp
        If e.Control And e.KeyCode = Keys.Enter And txtMessage.Text.Count > 0 Then
            NewMessage(txtMessage.Text)
        End If
    End Sub

    Private Sub ChatControl_Click(sender As Object, e As EventArgs) Handles MyBase.Click

    End Sub

    Private Sub ChatControl_Leave(sender As Object, e As EventArgs) Handles Me.Leave

    End Sub
End Class