Caffeine - Prevent your Windows computer from falling asleep!

caffeine.ps1

Add-Type @"
using System;
using System.Runtime.InteropServices;

public static class Power
{
    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern uint SetThreadExecutionState(uint esFlags);
}
"@

# Safely assign flags
$ES_CONTINUOUS       = [Convert]::ToUInt32("80000000", 16)
$ES_SYSTEM_REQUIRED  = [UInt32]1
$ES_DISPLAY_REQUIRED = [UInt32]2

# Combine the flags
# $flags = $ES_CONTINUOUS -bor $ES_SYSTEM_REQUIRED -bor $ES_DISPLAY_REQUIRED
$flags = $ES_CONTINUOUS -bor $ES_DISPLAY_REQUIRED

Write-Host "🍵 System caffeinated. Press Ctrl+C to stop."

try {
    while ($true) {
        [Power]::SetThreadExecutionState($flags) | Out-Null
        Start-Sleep -Seconds 10
    }
} finally {
    # Clear flags when script stops
    [Power]::SetThreadExecutionState($ES_CONTINUOUS) | Out-Null
    Write-Host "✅ Sleep prevention ended."
}

Credit goes to CHerSun/NoSleep for the original code this was based upon.