Start-ChromeApp.ps1

<#
.SYNOPSIS
    Starts Google Chrome apps
.DESCRIPTION
    Provides a PowerShell function to start Google Chrome apps by AppId string
.PARAMETER AppId
    The App ID to start
.EXAMPLE
    Start-ChromeApp -AppId dfdfomllemfemmfjeichdkogfmfmbebh
.EXAMPLE
    Start-ChromeApp 'icppfcnhkcmnfdhfhphakoifcfokfdhg'
.NOTES
    Chrome App Ids are unique to each chrome install, the website or app must first exist in the user's browser and be a valid app Id
#>
[cmdletbinding()]
param(
    [Parameter(
        ValueFromPipeline=$true,
        Mandatory=$true)]
    [string]
    $AppId,
    [Parameter(
        ValueFromRemainingArguments=$True)]
    [string[]]
    $RemainingArgs
)

$ErrorActionPreference = 'Stop'

try {
    $verboseFlag = (($PSCmdlet.MyInvocation.BoundParameters["Verbose"].IsPresent) -and
                    ($PSCmdlet.MyInvocation.BoundParameters["Verbose"] -ne $false))
    $chromePath = Resolve-Path "${env:ProgramW6432}*\Google\Chrome\Application\chrome.exe" | Select-Object $_.ProviderPath -First 1
    $startProcessArgs = @{}

    if (Test-Path $chromePath)
    {
        $startProcessArgs = @{
                FilePath      = $chromePath
                ArgumentList  = @()
                WorkingDir    = Split-Path $chromePath
            }

        # Chrome App Id's are 32 characters long, as far as I can tell.
        if (($null -ne $AppId) -and ($AppId.Length -ge 30))
        {
            # If the App Id is passed as an arg, use it as-is, else explicitly add the --app-id= flag.
            if ($AppID -match '--app-id=') {
                $startProcessArgs['ArgumentList'] += "$AppId"
            } else {
                $startProcessArgs['ArgumentList'] += "--app-id=$AppId"
            }
        }

        if ([string]::IsNullOrWhiteSpace($startProcessArgs['ArgumentList']) -or
           ([string]::IsNullOrEmpty($startProcessArgs['ArgumentList']))) {
            $startProcessArgs.Remove('ArgumentList')
        }

        if ($RemainingArgs) {
            $startProcessArgs['ArgumentList'] += $RemainingArgs
        }

        Write-Verbose -Verbose:$verboseFlag $("Invoking Start-Process with args: $($startProcessArgs|Format-List|Out-String)")
        Start-Process @startProcessArgs

    }
}
catch {
    $PSCmdlet.ThrowTerminatingError($_)
}