# vim: set sts=2 sw=2 et :

function Get-MSYS2 {
  # Handle some default paths first. This also works if a user installed a
  # system-wide instance of msys64 in these locations, and in that case the
  # shortcuts won't be found by the code in the rest of this function.
  if (Test-Path "C:\msys64") {
    return "C:\msys64"
  }
  if (Test-Path "D:\msys64") {
    return "D:\msys64"
  }

  $Shortcuts = Get-ChildItem -Recurse "$env:AppData\Microsoft\Windows\Start Menu" -Include *.lnk
  $Shell = New-Object -ComObject WScript.Shell
  foreach ($Shortcut in $Shortcuts) {
    $WD = $Shell.CreateShortcut($Shortcut).WorkingDirectory
    if ($WD -clike "*msys64") {
      return $WD
    }
  }
}

function Is-Installed($Name) {
  $Shortcuts = Get-ChildItem -Recurse "$env:AppData\Microsoft\Windows\Start Menu" -Include *.lnk
  $Shell = New-Object -ComObject WScript.Shell
  foreach ($Shortcut in $Shortcuts) {
    if ($Shortcut -clike "*\$Name.lnk") {
      return $true
    }
    $WD = $Shell.CreateShortcut($Shortcut).TargetPath
    if ($WD -clike "*\$Name.exe") {
      return $true
    }
  }
  return $false
}

function Is-Newer ($Name, $Version) {
  $ErrorActionPreference = 'SilentlyContinue'
  $have = (Get-Command $Name)
  $ErrorActionPreference = 'Continue'
  if (!$have) {
    return $false
  }
  if ($have.Version -ge $Version) {
    return $true
  }

  $have_version = $have.Version.ToString()
  $confirm = Read-Host "$Name version $have_version is too old (need $Version), install a newer version with Choco? [Y/n] "
  if ($confirm -eq 'n') {
    Write-Host "Please upgrade $Name manually before running Cerbero"
    return $true
  }
  return $false
}