Automatically update ArcDps and BuildTemplates from deltaconnected for Guild Wars 2

GW2.cmd

# 2>NUL & powershell -nop -nol -ep bypass "gc -ra '%~f0'|iex" & EXIT /B
# ^ boilerplate to execute script from batch context

# Update this variable to where you have GW2 installed and named.
# This defaults to `C:\Program Files\`
[System.IO.FileInfo] $GW2_PATH = "$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.
# Documentation:
# https://wiki.guildwars2.com/wiki/Command_line_arguments
$GW2_ARGS = @('/mapLoadinfo', '/bmp', '/autologin', '/fps:60')


if (Get-Process -Name $GW2_PATH.Name -ErrorAction SilentlyContinue) {
    exit
}


function Start-Gw2() {
    $startProcessParams = @{
        FilePath = $GW2_PATH.FullName
    }
    if (-not $(Test-Path -Path "$Env:AppData\Guild Wars 2\Settings.json") -and $GW2_ARGS) {
        $startProcessParams['ArgumentList'] = $GW2_ARGS
    }
    Start-Process @startprocessParams
    Start-Sleep -Seconds 10
    $startProcessParams = @{
        FilePath         = "$($GW2_PATH.DirectoryName)\addons\taco\GW2TacO.exe"
        WorkingDirectory = "$($GW2_PATH.DirectoryName)\addons\taco\"
    }
    Start-Process @startProcessParams
    exit
}


[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12

$arcPath = "$($GW2_PATH.DirectoryName)\bin64\d3d9.dll"
$arcUri = 'https://www.deltaconnected.com/arcdps/x64/d3d9.dll'

$templatesPath = "$($GW2_PATH.DirectoryName)\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

I was getting a "Could not establish trust relationship for the SSL/TLS..." error when calling Invoke-WebRequest with a https site. I need to extend your script with this code before Invoke-WebRequest:

if (-not ([System.Management.Automation.PSTypeName]'ServerCertificateValidationCallback').Type)
{
$certCallback=@"
    using System;
    using System.Net;
    using System.Net.Security;
    using System.Security.Cryptography.X509Certificates;
    public class ServerCertificateValidationCallback
    {
        public static void Ignore()
        {
            if(ServicePointManager.ServerCertificateValidationCallback ==null)
            {
                ServicePointManager.ServerCertificateValidationCallback += 
                    delegate
                    (
                        Object obj, 
                        X509Certificate certificate, 
                        X509Chain chain, 
                        SslPolicyErrors errors
                    )
                    {
                        return true;
                    };
            }
        }
    }
"@
    Add-Type $certCallback
 }
[ServerCertificateValidationCallback]::Ignore();

Source: https://stackoverflow.com/a/38729034
I had to use the -UseBasicParsing parameter for Invoke-WebRequest as well and now your script is working in my system without any problem. Thanks for your script!

Worked flawlessly - thank you!

Rev#25 - cleaned up batch boilerplate and am planning on adding taco update support.

Thanks for the gist, I adapted it because I set Tac0 in another folder, here is what I've done, if you'd like to add it :)

# Update this variable to where you have GW2 installed and named.
# This defaults to `C:\Program Files\`
[System.IO.FileInfo] $GW2_PATH = "D:\Guild Wars 2\Gw2-64.exe"
# Update this variable to where you have TACO located.
# This defaults to `C:\Program Files\Guild Wars 2\addons\taco\`
$TACO_PATH = "C:\Program Files\Guild Wars 2\addons\taco\"

or use
$TACO_PATH = "$($GW2_PATH.DirectoryName)\addons\taco\"
and

function Start-Gw2() {
    $startProcessParams = @{
        FilePath = $GW2_PATH.FullName
    }
    if (-not $(Test-Path -Path "$Env:AppData\Guild Wars 2\Settings.json") -and $GW2_ARGS) {
        $startProcessParams['ArgumentList'] = $GW2_ARGS
    }
    Start-Process @startprocessParams
    Start-Sleep -Seconds 10
    $startProcessParams = @{
        FilePath         = "$($TACO_PATH)GW2TacO.exe"
        WorkingDirectory = "$($TACO_PATH)"
    }
    Start-Process @startProcessParams
    exit
}

Feel free to reach me :)