CleanUp.ps1

# Automation of this guide:
# https://www.reddit.com/r/cs2/comments/1apx40j/comment/kq9ay6u
# from u/El_Chapaux

Function Get-FileSize {
    Param(
        $length
    )
    If ($length -ge 1TB) {
        return '{0:N2} TB' -f ($length / 1TB)
    } elseif ($length -ge 1GB) {
        return '{0:N2} GB' -f ($length / 1GB)
    } elseif ($length -ge 1MB) {
        return '{0:N2} MB' -f ($length / 1MB)
    } elseif ($length -ge 1KB) {
        return '{0:N2} KB' -f ($length / 1KB)
    } else {
        return "$length bytes"
    }
}

Function Clear-Folder {
    Param(
        [string]$path
    )

    if (-Not (Test-Path -Path $path)) {
        $nul = Get-FileSize(0)
        return [pscustomobject]@{path = $path; 'before cleaning' = $nul; afterwards = $nul; deleted = $nul }
    }

    [int64]$beforeLength = 0
    Get-ChildItem -Path $path -Recurse -Force | ForEach-Object {
        $beforeLength += $_.Length
    }

    If ($beforeLength -eq 0) {
        $nul = Get-FileSize(0)
        return [pscustomobject]@{path = $path; 'before cleaning' = $nul; afterwards = $nul; deleted = $nul }
    }

    Remove-Item -Path $path -Recurse -Force -ErrorAction SilentlyContinue

    [int64]$afterwardsLength = 0
    Get-ChildItem -Path $path -Recurse -Force | ForEach-Object {
        $afterwardsLength += $_.Length
    }

    [pscustomobject]@{path = $path; 'before cleaning' = Get-FileSize($beforeLength); afterwards = Get-FileSize($afterwardsLength); deleted = Get-FileSize($beforeLength - $afterwardsLength) }
}

Function Clear-Files {
    Param(
        [string]$path
    )

    [int64]$beforeLength = 0
    Get-ChildItem -Path $path -Force -ErrorAction SilentlyContinue | ForEach-Object {
        $beforeLength += $_.Length
        Remove-Item -LiteralPath $_.FullName -Force -ErrorAction SilentlyContinue
    }

    If ($beforeLength -eq 0) {
        $nul = Get-FileSize(0)
        return [pscustomobject]@{path = $path; 'before cleaning' = $nul; afterwards = $nul; deleted = $nul }
    }

    Remove-Item -Path $path -Force -ErrorAction SilentlyContinue

    [int64]$afterwardsLength = 0
    Get-ChildItem -Path $path -Force | ForEach-Object {
        $afterwardsLength += $_.Length
    }

    [pscustomobject]@{path = $path; 'before cleaning' = Get-FileSize($beforeLength); afterwards = Get-FileSize($afterwardsLength); deleted = Get-FileSize($beforeLength - $afterwardsLength) }
}

$SteamPath = (Get-ItemProperty -Path HKCU:\SOFTWARE\Valve\Steam -Name SteamPath).SteamPath
$libraryfolders = [IO.Path]::Combine($SteamPath , 'steamapps', 'libraryfolders.vdf')
$path = ''
$SteamFolder = Get-Content $libraryfolders | ForEach-Object {
    if ($_ -match '("path").*"(.+)"') {
        $path = $Matches[2]
    }
    if ($_ -match '("730").*"(.+)"') {
        return $path | Resolve-Path
    }
}
$csgoFolder = [IO.Path]::Combine($SteamFolder, 'steamapps', 'common', 'Counter-Strike Global Offensive')

Get-ChildItem -Path HKLM:\Software\Microsoft\Windows\CurrentVersion\Explorer\VolumeCaches -Exclude 'Device Driver Packages' | ForEach-Object {
    if ($_.Property -NotContains 'StateFlags') {
        return
    }

    if ($_.Property -NotContains 'StateFlags1337') {
        if ($_.PSChildName -eq 'D3D Shader Cache') {
            New-ItemProperty -Path $_.PSPath -Name 'StateFlags1337' -Value '2' -PropertyType DWord | Out-Null
        } else {
            New-ItemProperty -Path $_.PSPath -Name 'StateFlags1337' -Value '0' -PropertyType DWord | Out-Null
        }
    }
}

########

# delete the DirectX Shader Cache
# https://learn.microsoft.com/de-de/troubleshoot/windows-server/backup-and-storage/automating-disk-cleanup-tool#registry-key-information
Start-Process -FilePath cleanmgr.exe -ArgumentList '/sagerun:1337'

@(
    Clear-Folder("C:\Users\$([Environment]::UserName)\AppData\LocalLow\NVIDIA\PerDriverVersion\DXCache")
    Clear-Folder("C:\Users\$([Environment]::UserName)\AppData\Local\NVIDIA\GLCache")
    Clear-Files("$csgoFolder\game\bin\win64\*.mdmp")
    Clear-Files("$csgoFolder\game\csgo\*.txt")
    Clear-Files("$csgoFolder\game\csgo\*.log")
)

# Verify integrity of game files
Start-Process 'steam://validate/730'