Imports Bytescout.PDFExtractor
Imports System.IO
Imports Newtonsoft.Json

Class Program

    Friend Shared Sub Main(args As String())

        Try

            ' Get all settings VM
            Dim allSettings As SettingsVM = GetSettingsVM("settings.json")

            ' Create Bytescout.PDFExtractor.TextExtractor instance
            Dim extractor As New TextExtractor()
            extractor.RegistrationName = "demo"
            extractor.RegistrationKey = "demo"

            For Each fileName As String In Directory.GetFiles("InputFiles")

                ' Load sample PDF document
                extractor.LoadDocumentFromFile(fileName)

                ' Enable regex search
                extractor.RegexSearch = True

                ' Get Number of pages PDF contains
                Dim pageCount As Int32 = extractor.GetPageCount()

                For iPage As Int32 = 0 To pageCount - 1

                    ' Loop through all search settings
                    For Each itmSearchSetting As Settings In allSettings.Settings

                        ' If found, then copy file to sub-category folder
                        If extractor.Find(iPage, itmSearchSetting.regex, False) Then

                            ' If Directory does Not exists, then create them
                            If (Not Directory.Exists($"{allSettings.MainFolderName}/{itmSearchSetting.category}")) Then
                                Directory.CreateDirectory($"{allSettings.MainFolderName}/{itmSearchSetting.category}")
                            End If

                            ' Copy File
                            File.Copy(fileName, $"{allSettings.MainFolderName}/{itmSearchSetting.category}/{Path.GetFileName(fileName)}", True)

                        End If
                    Next
                Next
            Next

            ' Cleanup
            extractor.Dispose()

        Catch ex As Exception

            Console.WriteLine("Error: " + ex.Message)

        End Try

        Console.WriteLine()
        Console.WriteLine("Press any key to continue...")
        Console.ReadLine()

    End Sub

    Shared Function GetSettingsVM(ByVal settingsFileName As String) As SettingsVM

        Dim allJson As String = File.ReadAllText(settingsFileName)

        Return JsonConvert.DeserializeObject(Of SettingsVM)(allJson)

    End Function


End Class

Imports System.Collections.Generic

Public Class SettingsVM

    Public MainFolderName As String

    Public Settings As List(Of Settings)

End Class

Public Class Settings

    Public category As String
    Public regex As String

End Class

{
  "MainFolderName": "Outputs",
  "Settings": [
    {
      "category": "Invoices",
      "regex": "invoice|bill"
    },
    {
      "category": "User Details",
      "regex": "email"
    },
    {
      "category": "Products",
      "regex": "product|quantity"
    }
  ]
}