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Imports System.Web.Script.Serialization
Imports System.IO
Imports System.Net


Public Class Form1
    Public username As String = My.Settings.username.ToString()

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        Me.Hide()
        SettingForms.Show()
    End Sub

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Timer1.Start()
    End Sub

    Private Sub FetchData(username As String)
        Dim url_string = "https://tmi.twitch.tv/group/user/" + username + "/chatters"

        Try
            ListBox1.Items.Clear()
            ListBox2.Items.Clear()
            ListBox3.Items.Clear()
            ListBox4.Items.Clear()

            'Request JSON
            Dim Req As HttpWebRequest
            Dim Ret As HttpWebResponse = Nothing
            Dim SR As StreamReader
            Req = DirectCast(WebRequest.Create(url_string), HttpWebRequest)
            Ret = DirectCast(Req.GetResponse(), HttpWebResponse)
            SR = New StreamReader(Ret.GetResponseStream())
            Dim Raw As String = Nothing
            Raw = SR.ReadToEnd()

            'Process the requested JSON into usable dictionaries
            Dim DATA_OBJECT As New Chatters()
            Dim JavaScriptSerialization As New JavaScriptSerializer()
            DATA_OBJECT = JavaScriptSerialization.Deserialize(Raw, DATA_OBJECT.GetType)

            'Viewers
            For Each member In DATA_OBJECT.chatters.viewers
                ListBox1.Items.Add(member)
            Next

            'Moderators
            For Each member In DATA_OBJECT.chatters.moderators
                ListBox2.Items.Add(member)
            Next

            'Others
            For Each member In DATA_OBJECT.chatters.admins
                ListBox3.Items.Add(member)
            Next
            For Each member In DATA_OBJECT.chatters.staff
                ListBox3.Items.Add(member)
            Next
            For Each member In DATA_OBJECT.chatters.global_mods
                ListBox3.Items.Add(member)
            Next

            'Subscribers
            For Each member In DATA_OBJECT.chatters.vips
                ListBox4.Items.Add(member)
            Next
        Catch ex As Exception
            'debugging exceptions
            MessageBox.Show(ex.ToString)
        End Try
    End Sub

    'Automatically refresh userlist every 30 seconds
    Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
        FetchData(username)
    End Sub

    'Refresh userlist manually
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        FetchData(username)
    End Sub
End Class

'Serialization Classes
<Serializable>
Public Class Chatters
    Public _links
    <Runtime.Serialization.DataMember>
    Public chatter_count As Integer
    <Runtime.Serialization.DataMember>
    Public chatters As Groups
End Class

<SerializableAttribute>
Public Class Groups
    <Runtime.Serialization.DataMember>
    Public vips As String()
    <Runtime.Serialization.DataMember>
    Public moderators As String()
    <Runtime.Serialization.DataMember>
    Public staff As String()
    <Runtime.Serialization.DataMember>
    Public admins As String()
    <Runtime.Serialization.DataMember>
    Public global_mods As String()
    <Runtime.Serialization.DataMember>
    Public viewers As String()
End Class