@echo off

if "%~1"=="" (
    echo -----------------------------------------------------
    echo Invalid parameter!
    echo -----------------------------------------------------
    echo Usage: pdf-to-json.bat folder_path
    echo Example: pdf-to-json.bat "c:\documents"
    echo -----------------------------------------------------
    if not "%NOPAUSE%"=="1" pause
    exit /b 1
)

powershell -NoProfile -ExecutionPolicy Bypass -Command "& .\pdf-to-json.ps1" "%1"
echo Script finished with errorlevel=%errorlevel%

pause
        

Param(
    [Parameter(Mandatory = $true)]
    [string] $InputFolder = ""
)

# Add reference to Bytescout.PDFExtractor.dll assembly
Add-Type -Path "c:\Program Files\Bytescout PDF Extractor SDK\net4.00\Bytescout.PDFExtractor.dll"

# Check input folder exists
if ((Test-Path $InputFolder) -eq $false) {
    Write-Host "Target folder does not exist." -ForegroundColor Red
    exit 0
}

# Create and activate JSONExtractor instance
$jsonExtractor = New-Object Bytescout.PDFExtractor.JSONExtractor
$jsonExtractor.RegistrationName = "demo"
$jsonExtractor.RegistrationKey = "demo"

try {
    # Get PDF files from input folder
    $files = Get-ChildItem -Path $InputFolder -Recurse -Include "*.pdf"
    foreach ($file in $files) {
        Write-Host "Input file" $file.FullName
        # Construct output file name
        $jsonFileName = [System.IO.Path]::ChangeExtension($file.FullName, "json")
        Write-Host "  Output file" $jsonFileName
        # Load PDF document
        $jsonExtractor.LoadDocumentFromFile($file.FullName)
        # Disable the formatting reconstruction
        $jsonExtractor.PreserveFormattingOnTextExtraction = $false
        # Extract first page to JSON
        $jsonExtractor.SaveJSONToFile(0, $jsonFileName)
        # Reset extractor
        $jsonExtractor.Reset()
    }
}
catch {
    Write-Host $_.Exception.Message
}

$jsonExtractor.Dispose()