LGTV Companion - app for powering on or off your LG WebOS TV with your PC.

# Self-elevate the script if required
# Unfortunately LogiOptions.exe can't be killed without this.
# NOTE: This apparently changes the working directory!
if (-Not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] 'Administrator')) {
 if ([int](Get-CimInstance -Class Win32_OperatingSystem | Select-Object -ExpandProperty BuildNumber) -ge 6000) {
  $CommandLine = "-File `"" + $MyInvocation.MyCommand.Path + "`" " + $MyInvocation.UnboundArguments
  Start-Process -FilePath PowerShell.exe -Verb Runas -ArgumentList $CommandLine
  Exit
 }
}

$signature = @
[DllImport(user32.dll")]
public static extern bool SystemParametersInfo(int uAction, int uParam, ref int lpvParam, int flags );
"@
 
$systemParamInfo = Add-Type -memberDefinition  $signature -Name ScreenSaver -passThru

Function Set-ScreenSaverActive
{
  Param ([Boolean]$active)
  [Int32]$nullVar = 0
  # SPI_SETSCREENSAVETIMEOUT = 0xf
  $value = If ($active) {3 * 60} else {9998 * 60}
  $systemParamInfo::SystemParametersInfo(0xf, $value, [REF]$nullVar, 2)
}

$switchToTV = $args[0] -eq "TV"
$displaySwitchArg = if ($switchToTV) { "4" } else { "1" }

if ($switchToTV) {
    & 'C:\Program Files\LGTV Companion\LGTVcli.exe' -powerOn
    & 'C:\Program Files\Logitech\LogiOptions\LogiOptions.exe' /noui

    # Safe default... The screen saver blanks after 3 minutes, so ideally this would be set to 0 (never), but
    # IF the screen saver were to not blank for whatever reason, perhaps this could literally help save the screen.
    # After this hits, the TV will show "no signal" for 15-20 minutes or something and then finally turn off entirely.
    Powercfg /Change monitor-timeout-ac 45
}
else {
    & 'C:\Program Files\LGTV Companion\LGTVcli.exe' -powerOff
    Powercfg /Change monitor-timeout-ac 15
}

DisplaySwitch.exe $displaySwitchArg

Set-ScreenSaverActive($switchToTV)

. C:\Users\serenity\PS-TaskbarAutohide.ps1

if ($switchToTV) {
    Enable-AutoHideTaskBar
}
else {
    Disable-AutoHideTaskBar
}

# The Fx keys work without this software for as long as the keyboard is powered on, so let's kill it
# If we switch TO the TV, we want to let it start first, then kill it.
# Trying to kill it regardless won't hurt though, so I see no point in checking here.
Start-Sleep -Seconds 10
taskkill /F /IM:LogiOptions.exe /T