# Set the compression algorithm options
$options = "XPRESS4K", "XPRESS8K", "XPRESS16K", "LZX"

# Prompt the user to choose a compression algorithm
Write-Host "Please choose a compression algorithm from the following options:"
Write-Host $options
Write-Host ""

# Loop until the user enters a valid option
do {
  $choice = Read-Host "Enter your choice"
  if ($options -contains $choice) {
    $algorithm = $choice
    break
  }
  else {
    Write-Host "Invalid choice. Please enter one of the options."
    Write-Host ""
  }
}
while ($true)

# Prompt the user to enter a directory to compress
Write-Host "Please enter a directory to compress. You can copy the path by shift-right clicking on the folder and selecting 'Copy as path'."
Write-Host ""

# Loop until the user enters a valid directory
do {
  $dir = Read-Host "Enter the directory"
  if (Test-Path $dir) {
    break
  }
  else {
    Write-Host "Invalid directory. Please enter a valid path."
    Write-Host ""
  }
}
while ($true)

# Check if the user entered multiple directories
$count = ($dir -split '"').Count - 1

# If the user entered multiple directories, ask them to format them correctly
if ($count -gt 1) {
  Write-Host "You entered multiple directories. Please remove all spaces after any `"` and add a `*` after any `\` prior to `"` for the script to continue successfully."
  Write-Host "For example: `"`C:\Users\User\Documents\Assassin's Creed Valhalla\*`" `"`C:\Users\User\Documents\3DMark\*`" `"`C:\Users\User\Documents\4a games\*`""
  Write-Host ""
  exit
}

# Notify the user of the compression level
switch ($algorithm) {
  "XPRESS4K" { $level = "low" }
  "XPRESS8K" { $level = "medium" }
  "XPRESS16K" { $level = "high" }
  "LZX" { $level = "max" }
}

Write-Host "You chose $algorithm compression, which is $level level of compression."
Write-Host ""

# Exclude the windows directory and its subdirectories
$exclude = "windows"
Get-ChildItem $dir -Directory | ForEach-Object {
  if ($_.Name -eq $exclude) {
    $dir = "$dir /EXCLUDE:$_.FullName"
  }
}

# Compress the directory and its subdirectories using the chosen algorithm
Write-Host "Compressing $dir using $algorithm algorithm..."
compact /c /s /a /i /exe:$algorithm $dir
Write-Host ""

# Display the compression results
Write-Host "Compression completed. Here are the results:"
compact /q $dir
Write-Host ""

# End the script
pause