ps/Modules/Alkami.PowerShell.Services/Public/Uninstall-LegacyMicroservice.ps1

function Uninstall-LegacyMicroservice {
<#
.SYNOPSIS
    Uninstalls a legacy Alkami Windows Microservice

.DESCRIPTION
    Uninstalls a legacy Alkami Windows Microservice.
    Legacy Microservices are considered to be Microservices that implement Alkami.Services.Subscriptions.ParticipatingService.DistributedServiceBase or derivatives.
    Legacy Microservices uninstalled via this function are not uninstalled from a Service Fabric or other mesh implementation.
    This installer does not remove k8s or Lambdas or anything that is not a Windows Service.

.PARAMETER ServicePath
    [string] The path to the service folder or service file. If to a folder, assumes that the file matches the path name.
    Ex: C:\ProgramData\chocolatey\lib\Alkami.Services.Subscriptions.Host as a param would then find the file that matches Alkami.Services.Subscriptions.Host.exe under this path

.PARAMETER AssemblyInfo
    [string] The expected name of the service. This overrides the default option of matching the path ID.

.PARAMETER UseLegacyConfigForServiceName
    [switch] Look up the legacy service name from the config.ps1 file. This is non-preferred. This is only used if the AssemblyInfo parameter is empty.

.EXAMPLE
Uninstall-LegacyMicroservice C:\ProgramData\chocolatey\lib\Alkami.Services.Subscriptions.Host
#>
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory = $true, Position = 0)]
        [Alias("Path")]
        [string]$ServicePath,
        [Parameter(Mandatory = $false, Position = 1)]
        [Alias("Name")]
        [string]$AssemblyInfo,
        [switch]$UseLegacyConfigForServiceName
    )

    $logLead = (Get-LogLeadName)

<#
# This is gated behind the pipeline, so we have no need to test right now.
# If we do want to go this route, we definitely have to have a flag passed in.
    if (!(Test-IsDeveloperMachine) -and (Test-IsWebServer)) {
        Write-Warning "$loglead : Can not install microservices on the web tier"
        return
    }
#>

    $ServicePath = (Resolve-Path $ServicePath)
    $folderPath = $ServicePath

    if (!(Test-Path $ServicePath)) {
        Write-Warning "$logLead : Path passed in does not represent a valid path: [$ServicePath]. Can not install something which does not exist."
        return
    }

    $stopWatch = [System.Diagnostics.Stopwatch]::StartNew()

    if ([string]::IsNullOrWhiteSpace($AssemblyInfo) -and $UseLegacyConfigForServiceName) {
        Write-Verbose "$logLead : Trying to find the `$AssemblyInfo from the legacy config.ps1"
        $configPs1s = (Get-ChildItem -Path $ServicePath -Filter "config.ps1" -Recurse)

        $serviceId = ""

        foreach($config in $configPs1s) {
            $configFullName = $config.FullName

            # Dotsource the file to get the contents into our runspace
            . $configFullName

            if (![string]::IsNullOrWhiteSpace($serviceId)) {
                # Write out where we got it from in case we need to debug why we got this from a wrong location, etc
                Write-Verbose "$logLead : Found [$serviceId] in [$configFullName]]"
                break
            }
        }

        # Store the value we got back so we can use it in other places
        $AssemblyInfo = $serviceId
    }

    $item = (Get-Item $ServicePath)
    if ($item.PSIsContainer) {
        # path was a folder
        $folderName = (Split-Path -Path $ServicePath -Leaf)
        if ($folderName -match 'tools') {
            $ServicePath = (Split-Path -Path $ServicePath -Parent)
            $folderName = (Split-Path -Path $ServicePath -Leaf)
        }
        $exeName = "$folderName.exe"

        if (![string]::IsNullOrWhiteSpace($AssemblyInfo)){
            $exeName = "$AssemblyInfo.exe"
        }

        # We still don't have this value, let's pretend it's the folder name then
        if ([string]::IsNullOrWhiteSpace($AssemblyInfo)) {
            $AssemblyInfo = $folderName
        }

        Write-Host "$logLead : looking for $exeName in $ServicePath"

        $exeItem = (Get-ChildItem -Path $ServicePath -Filter $exeName -Recurse) | Select-Object -First 1 # there should only be one exe with the [package name].exe inside the folders
        if ($null -eq $exeItem) {
            $stopWatch.Stop()
            Write-Warning "$logLead : Path passed in does not contain an exe with the filename: [$exeName]. Can not uninstall a non-existent microservice in [$($stopWatch.Elapsed)]."
            return
        }
        $ServicePath = $exeItem.FullName
    } else {
        # The $item was not a .PSIsContainer so it was a file
        # That means we want the folderPath to be the folder of the file
        $folderPath = (Split-Path $folderPath -Parent)

        # We still don't have this value, let's pretend it's the folder name then
        if ([string]::IsNullOrWhiteSpace($AssemblyInfo)) {
            $AssemblyInfo = (Split-Path -Path $ServicePath -Leaf).Replace(".exe","")
        }
    }

    # Check to see if the service is already registered before we try and do extra stuff
    # This is where we could unregister it before we continue if we want to force a re-registration
    $serviceCandidates = (Get-ServiceInfoByCIMFragment -Fragment $AssemblyInfo)

    # If we didn't find anything by the assemblyinfo, let's double check the path in case something was found over there
    if (Test-IsCollectionNullOrEmpty $serviceCandidates) {
        $serviceCandidates = (Get-ServiceInfoByCIMFragment -Fragment $folderPath)
    }

    # If we found something, log it and quit
    if (Test-IsCollectionNullOrEmpty $serviceCandidates) {
        $stopWatch.Stop()
        Write-Warning "$logLead : No services were found, nothing to do, returning in [$($stopWatch.Elapsed)]"
        return
    }

    foreach($serviceCandidate in $serviceCandidates) {
        Invoke-DeleteLegacyMicroserviceFromServiceCandidate $serviceCandidate
    }

    $stopWatch.Stop()

    Write-Host "$logLead : [$assemblyinfo] uninstalled at [$ServicePath] in [$($stopWatch.Elapsed)]"
}