Automatically update ArcDps and BuildTemplates from deltaconnected for Guild Wars 2

GW2.cmd

::[CmdletBinding(SupportsShouldProcess)]
::param
::(
::# Update these values to where you have GW2 installed and named
::    [Parameter(Position = 0)]
::    [System.String]
::    $Gw2Path = "$Env:ProgramFiles\Guild Wars 2\Gw2-64.exe",
::
::# This line can be removed if you don't want to pass any arguments
::# It does not get used if you already have a "%APPDATA%\Guild Wars 2\Settings.json" file
::# https://wiki.guildwars2.com/wiki/Command_line_arguments
::    [Parameter(Position = 1)]
::    [System.String[]]
::    $Gw2Arguments = @('/mapLoadinfo', '/bmp', '/autologin', '/fps:60')
::)

::<#
@ECHO OFF
REM https://stackoverflow.com/questions/3759456/create-a-executable-exe-file-from-powershell-script#answer-4629494
REM https://blogs.msdn.microsoft.com/zainala/2008/08/05/using-0-inside-the-batch-file-to-get-the-file-info/

SET "pwsh=%windir%\System32\WindowsPowerShell\v1.0\powershell.exe"
SET "args=-NoProfile -NoLogo -ExecutionPolicy Bypass -Command"
SET "cmd="@(Get-Content -Path '%~f0') -replace '^^::'^|Set-Content -Path '%~dpn0.ps1';. '%~dpn0.ps1' %*""

%pwsh% %args% %cmd%

DEL "%~dpn0.ps1" /Q /F
EXIT 0
::#>

if (Get-Process -Name $(Split-Path -Leaf -Path $Gw2Path) -ErrorAction SilentlyContinue)
{
    exit
}


function Start-Gw2()
{
    $startProcessParams = @{
        'FilePath' = $Gw2Path
    }
    if (-not $(Test-Path -Path "$Env:AppData\Guild Wars 2\Settings.json") -and $Gw2Arguments)
    {
        $startProcessParams['ArgumentList'] = $Gw2Arguments
    }
    Start-Process @startprocessParams
    Start-Sleep -Seconds 10
    $startProcessParams = @{
        'FilePath'         = "$(Split-Path -Parent -Path $Gw2Root)\addons\taco\GW2TacO.exe"
        'WorkingDirectory' = "$(Split-Path -Parent -Path $Gw2Root)\addons\taco\"
    }
    Start-Process @startProcessParams
    exit
}


$arcPath = "$(Split-Path -Parent -Path $Gw2Path)\bin64\d3d9.dll"
$arcUri = 'https://www.deltaconnected.com/arcdps/x64/d3d9.dll'

$templatesPath = "$(Split-Path -Parent -Path $Gw2Path)\bin64\d3d9_arcdps_buildtemplates.dll"
$templatesUri = 'https://www.deltaconnected.com/arcdps/x64/buildtemplates/d3d9_arcdps_buildtemplates.dll'

try
{
    $invokeWebRequestParams = @{
        'Uri'             = 'https://www.deltaconnected.com/arcdps/x64/d3d9.dll.md5sum'
        'UseBasicParsing' = $true
        'ErrorAction'     = [System.Management.Automation.ActionPreference]::Stop
    }
    $remoteHash = $(
        @($(Invoke-WebRequest @invokeWebRequestParams).RawContent -split "`n").Where{$_}[-1] -split '\s'
    )[0]
}
catch
{
    "Failed to retrieve checksum for ArcDPS: $PSItem"
    $null = $Host.UI.RawUI.ReadKey()
    Start-Gw2
}
if ($remoteHash.Length -ne 32)
{
    "Bad MD5 checksum from ArcDPS: $remoteHash."
    $null = $Host.UI.RawUI.ReadKey()
    Start-Gw2
}


#region ArcDPS/BuildTemplates download
if (Test-Path -Path $arcPath)
{
    if ($(Get-FileHash -Path $arcPath -Algorithm MD5).Hash -ne $remoteHash)
    {
        'ArcDPS is out-of-date.'

        if (Test-Path -Path "$arcPath.bak")
        {
            Remove-Item -Path "$arcPath.bak", "$templatesPath.bak" -Force
        }
        Rename-Item -Path $arcPath -NewName "$arcPath.bak"
        Rename-Item -Path $templatesPath -NewName "$templatesPath.bak"

        try
        {
            Invoke-WebRequest -Uri $arcUri -OutFile $arcPath -ErrorAction Stop
            Invoke-WebRequest -Uri $templatesUri -OutFile $templatesPath -ErrorAction Stop
        }
        catch
        {
            Remove-Item -Path $arcPath, $templatesPath -Force -ErrorAction Ignore
            Rename-Item -Path "$arcPath.bak" -NewName $arcPath
            Rename-Item -Path "$templatesPath.bak" -NewName $templatesPath

            "Failed to update ArcDPS: $PSItem Restored old version."
            $null = $Host.UI.RawUI.ReadKey()
            Start-Gw2
        }

        'ArcDPS install complete.'
    }
    else
    {
        'ArcDPS is up-to-date.'
    }
}
else
{
    Invoke-WebRequest -Uri $arcUri -OutFile $arcPath
    Invoke-WebRequest -Uri $templatesUri -OutFile $templatesPath

    'ArcDPS install complete.'
    Start-Sleep -Seconds 1
}
#endregion

Start-Gw2