#Fase 1, hacer Lista de HASHes

$fecha = Get-Date -Format 'yyyy-MM-dd_HH-mm'

$Path = read-host "RUTA* ejemplo c:\users\"
$HashFile = join-path $PSScriptRoot "$($fecha)_hash.csv"

$Count = 0 #contar hashes

Get-ChildItem -Path $Path -File -Recurse | ForEach-Object {

    $Hash = Get-FileHash -Path $_.FullName -Algorithm md5
$Count++

Write-Host "`rConstruyendo lista... $Count hashes" -NoNewline

    [PSCustomObject]@{
        Path   = $_.FullName
        Size   = $_.Length
        SizeMB = [math]::Round($_.Length / 1MB, 2)
        Hash   = $Hash.Hash
    }

} | Export-Csv -Path $HashFile -NoTypeInformation -Encoding UTF8


#Fase 2, comparacion de HASHes


$Files = Import-Csv $HashFile

$Duplicates = $Files |
    Group-Object Hash |
    Where-Object { $_.Count -gt 1 } |
    ForEach-Object {
        $_.Group
    }


if ($duplicates.count -gt 0) {
$DuplicateFile = join-path $PSScriptRoot "$($fecha)_duplicados.csv"
$Duplicates |
    Export-Csv $DuplicateFile -NoTypeInformation -Encoding UTF8
    
Write-Host "Duplicados encontrados: $($Duplicates.Count)" -ForegroundColor Green
Write-Host "Resultado guardado en: $DuplicateFile" -ForegroundColor Yellow
$duplicados_content = Get-Content $DuplicateFile
write-output $duplicados_content
read-host "Presione cualquier tecla para salir"
exit
    }


elseif ($duplicates.count -eq 0) {
write-host "no se encontraron duplicados en $path" -ForegroundColor Green
read-host "presione una tecla para salir"
exit
}
read-host "presione una tecla para salir"