<%@ Language="VBScript" %>
<%
Response.ContentType = "application/json"
Response.Buffer = True

' Slides folder path (local to IIS)
Dim SLIDES_FOLDER
SLIDES_FOLDER = Server.MapPath("slides")

' Valid image extensions
Dim validExtensions
validExtensions = Array("jpg", "jpeg", "png", "gif", "bmp", "webp")

On Error Resume Next

Dim fso, folder, file, slides, ext, i
Set fso = Server.CreateObject("Scripting.FileSystemObject")

' Check if folder exists
If Not fso.FolderExists(SLIDES_FOLDER) Then
    Response.Write("{""success"":false,""message"":""Slides folder not found""}")
    Set fso = Nothing
    Response.End
End If

Set folder = fso.GetFolder(SLIDES_FOLDER)

' Build array of image files
Dim fileList()
Dim fileCount
fileCount = 0

For Each file In folder.Files
    ext = LCase(fso.GetExtensionName(file.Name))

    ' Check if valid image extension
    For i = 0 To UBound(validExtensions)
        If ext = validExtensions(i) Then
            ReDim Preserve fileList(fileCount)
            fileList(fileCount) = file.Name
            fileCount = fileCount + 1
            Exit For
        End If
    Next
Next

' Sort files alphabetically (simple bubble sort)
Dim j, temp
If fileCount > 1 Then
    For i = 0 To fileCount - 2
        For j = i + 1 To fileCount - 1
            If fileList(i) > fileList(j) Then
                temp = fileList(i)
                fileList(i) = fileList(j)
                fileList(j) = temp
            End If
        Next
    Next
End If

' Build JSON response
Dim json
json = "{""success"":true,""basepath"":""slides/"",""slides"":["

If fileCount > 0 Then
    For i = 0 To fileCount - 1
        If i > 0 Then json = json & ","
        json = json & "{""filename"":""" & fileList(i) & """}"
    Next
End If

json = json & "]}"

Response.Write(json)

Set folder = Nothing
Set fso = Nothing
%>