Add-Type -AssemblyName System.Windows.Forms

# Create the form
$form = New-Object System.Windows.Forms.Form
$form.Text = "Instructions"
$form.Size = New-Object System.Drawing.Size(800, 550)
$form.StartPosition = "CenterScreen"

# Create a label to display the instructions
$label = New-Object System.Windows.Forms.Label
$label.Text = @"
This script will read a CSV file with users in samaccountname format in a column named 'username' and will set the -ChangePasswordAtLogon property to $true.

Please select the CSV file.

Clicking Accept will proceed with the operation. Make sure you have confirmed the CSV file is correct before proceeding.
"@
$label.AutoSize = $true
$label.MaximumSize = New-Object System.Drawing.Size(560, 0) # Set maximum width and allow height to adjust
$label.Location = New-Object System.Drawing.Point(10, 80)
$form.Controls.Add($label)

# Define author information
$authorName = "Zak Bearman"
$department = "Wintel Platforms"
$year = "2025"

# Create a label to display the author
$label2 = New-Object System.Windows.Forms.Label
$label2.Text = "Written by $authorName - $department $year."
$label2.AutoSize = $true
$label2.MaximumSize = New-Object System.Drawing.Size(560, 0) # Set maximum width and allow height to adjust
$label2.Location = New-Object System.Drawing.Point(160, 420)
$form.Controls.Add($label2)

# Create a TextBox to display the CSV content
$textBox = New-Object System.Windows.Forms.TextBox
$textBox.Multiline = $true
$textBox.ScrollBars = "Vertical"
$textBox.ReadOnly = $true
$textBox.Size = New-Object System.Drawing.Size(200, 500)
$textBox.Location = New-Object System.Drawing.Point(568, 5)
$form.Controls.Add($textBox)

# Create a button to browse for the CSV file
$browseButton = New-Object System.Windows.Forms.Button
$browseButton.Text = "Browse"
$browseButton.Location = New-Object System.Drawing.Point(250, 240)
$script:csvPath = $null
$browseButton.Add_Click({
    $script:csvPath = $null
    $openFileDialog = New-Object System.Windows.Forms.OpenFileDialog
    $openFileDialog.Filter = "CSV files (*.csv)|*.csv"
    if ($openFileDialog.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {
        $script:csvPath = $openFileDialog.FileName
        $textBox.Text = Get-Content -Path $script:csvPath -Raw
    }
})
$form.Controls.Add($browseButton)

# Create an Accept button
$acceptButton = New-Object System.Windows.Forms.Button
$acceptButton.Text = "Accept"
$acceptButton.Location = New-Object System.Drawing.Point(200, 300)
$acceptButton.Add_Click({
    if (-not $script:csvPath) {
        [System.Windows.Forms.MessageBox]::Show("No CSV file selected. Please select a CSV file to proceed.", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
        return
    }
    $form.Tag = "Accept"
    $form.Close()
})
$form.Controls.Add($acceptButton)

# Create a Cancel button
$cancelButton = New-Object System.Windows.Forms.Button
$cancelButton.Text = "Cancel"
$cancelButton.Location = New-Object System.Drawing.Point(300, 300)
$cancelButton.Add_Click({
    $form.Tag = "Cancel"
    $form.Close()
})
$form.Controls.Add($cancelButton)

# Show the form
$form.ShowDialog()

# Check the form result
if ($form.Tag -eq "Cancel") {
    Write-Output "Operation cancelled by the user."
    exit
}

# Import the CSV file
$userList = Import-Csv -Path $script:csvPath

# Check if the path exists, if not create it
$destinationPath = "C:\temp\useroutput\done"
if (-not (Test-Path -Path $destinationPath)) {
    New-Item -ItemType Directory -Path $destinationPath | Out-Null
}

# Get today's date
$todaysDate = Get-Date -Format "yyyyMMdd"

# Set the output CSV file path
$outputCsvPath = "$destinationPath\users-done-$todaysDate.csv"

# Loop through each user in the CSV
foreach ($user in $userList) {
    $samAccountName = $user.username

    try {
        # Get the user object by SamAccountName
        $userObject = Get-ADUser -Filter {SamAccountName -eq $samAccountName}

        if ($null -eq $userObject) {
            throw "User '$samAccountName' does not exist."
        }

        # Set the password to expired
        Set-ADUser -Identity $samAccountName -ChangePasswordAtLogon $true

        Write-Output "Password for user '$samAccountName' has been set to expired."
    }
    catch {
        Write-Output "Failed to set password for user '$samAccountName': $_"
    }
}
    catch {
        Write-Output "Failed to set password for user '$samAccountName': $_"
    }
# Export the updated user list to the new CSV file
$userList | Export-Csv -Path $outputCsvPath -NoTypeInformation

Write-Output "The updated user list has been exported to $outputCsvPath."

# Rename the source CSV file
$originalFileName = [System.IO.Path]::GetFileNameWithoutExtension($script:csvPath)
$originalFileExtension = [System.IO.Path]::GetExtension($script:csvPath)
$directory = [System.IO.Path]::GetDirectoryName($script:csvPath)
$newFileName = "$originalFileName-done-$todaysDate$originalFileExtension"
$newFilePath = [System.IO.Path]::Combine($directory, $newFileName)

Rename-Item -Path $script:csvPath -NewName $newFileName

Write-Output "The original CSV file has been renamed to $newFilePath."

# Open the folder containing the renamed CSV file
Start-Process -FilePath "explorer.exe" -ArgumentList "/select,`"$newFilePath`""


# Clear all variables from active memory
Remove-Variable -Name form, label, label2, textBox, browseButton, acceptButton, cancelButton, csvPath, userList, destinationPath, todaysDate, outputCsvPath, originalFileName, originalFileExtension, directory, newFileName, newFilePath -ErrorAction SilentlyContinue