Setup 2 instances of CouchDB locally (dev and test)

CouchDevSetup.ps1

#Requires -RunAsAdministrator
#Requires -Version 5.1

if (-not(Get-Module IniManager -ErrorAction SilentlyContinue)) {
    Install-Module -Name IniManager -Force
}
Import-Module -Name IniManager

$webBinary = 'https://dl.bintray.com/apache/couchdb/win/2.1.1/couchdb-2.1.1.msi'
$msi = "~\Downloads\couchdb-2.1.1.msi"
$freshCouchInstall = $false
$freshCouchTestInstall = $false
$targetpath = 'C:\CouchDBTest'
$serviceName = 'Apache CouchDB Test'

$admin = @{ 
    Name = 'admin'
    Password = 'Welcome1'
}

function Purge {
    param (
    [Parameter(Mandatory)]
    [String] $path
)

    if (Test-Path $path -PathType Container) 
    {
        Remove-item $path -Force -Recurse
    }
    
    if (Test-Path $path -PathType Leaf) 
    {
        Remove-item $path -Force
    }
}

if (Get-Service $serviceName -ErrorAction SilentlyContinue) {
    
    "$serviceName is already installed.  Exiting..."
    return 
}

if (-not (Get-Service 'Apache CouchDB' -ErrorAction SilentlyContinue))
{   
    if (-not (Test-Path -PathType Leaf -Path $msi)) {
        Invoke-WebRequest -Uri $webBinary -OutFile $msi
    }

    $msifullpath= (Get-Item $msi).FullName
    Start-Process -wait msiexec.exe  "/i $msifullpath /qb TARGET=C:\CouchDB"
    $freshCouchInstall = $true
}

$couchbin = Get-ItemPropertyValue -Path 'Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Apache CouchDB\Parameters' -Name 'AppDirectory'
$couchbasedir = (Get-Item $couchbin).Parent.FullName
cp $couchbasedir $targetpath -Recurse -Force


### configure the Couch Test instance

# Remove any copied data and logs
Purge "$targetpath\couch.log"
Purge "$targetpath\data"

# Change the default ports
$localini =  "$targetpath\etc\local.ini"
Set-IniKey -Path $localini -Section 'httpd' -Key 'port' -Value 7986
Set-IniKey -Path $localini -Section 'chttpd' -Key 'port' -Value 7984

# Update the instance name
$vmargs = "$targetpath\etc\vm.args"
$updatedVMArgsContent = Get-content $vmargs | % {
    if ($_ -match "^-name") { 
        '-name couchtest@localhost.com'
    } else { 
        $_ 
    }
}
Set-Content -Path $vmargs -Value $updatedVMArgsContent

# Register the Test service
if (-not (Get-Service 'Apache CouchDB Test' -ErrorAction SilentlyContinue)) {
    Start-Process -wait  "$targetpath\bin\nssm.exe" "install ""$serviceName"" $targetpath\bin\couchdb.cmd"
}

# Start  the Test service
Start-Service $serviceName 

if ($freshCouchInstall) {
    $resp = IRM -Method PUT -Uri http://localhost:5986/_config/httpd/enable_cors -Body  ( ConvertTo-Json "true" )
    $resp = IRM -Method PUT -Uri http://localhost:5986/_config/cors/credentials  -Body  ( ConvertTo-Json "true" )
    $resp = IRM -Method PUT -Uri http://localhost:5986/_config/cors/origins      -Body  ( ConvertTo-Json "*" )
    $resp = IRM -Method PUT -Uri http://localhost:5986/_config/cors/headers      -Body  ( ConvertTo-Json "accept, authorization, content-type, origin, referer" )
    $resp = IRM -Method PUT -Uri http://localhost:5986/_config/cors/methods      -Body  ( ConvertTo-Json "GET, PUT, POST, HEAD, DELETE" )
    $resp = IRM -Method PUT -Uri http://localhost:5986/_config/log/level         -Body  ( ConvertTo-Json "error" )
    $resp = IRM -Method PUT -Uri http://localhost:5984/_global_changes 
    $resp = IRM -Method Put -Uri http://localhost:5984/_replicator 
    $resp = IRM -Method Put -Uri http://localhost:5984/_users
    $resp = IRM -Method Post http://localhost:5984/_cluster_setup  -ContentType "application/json" -Body (ConvertTo-Json @{ action = "enable_cluster"; bind_address = "0.0.0.0";  username=$admin.Name; password=$admin.Password; node_count = "1"})
}

$resp = IRM -Method PUT -Uri http://localhost:7986/_config/httpd/enable_cors -Body  ( ConvertTo-Json "true" )
$resp = IRM -Method PUT -Uri http://localhost:7986/_config/cors/credentials  -Body  ( ConvertTo-Json "true" )
$resp = IRM -Method PUT -Uri http://localhost:7986/_config/cors/origins      -Body  ( ConvertTo-Json "*" )
$resp = IRM -Method PUT -Uri http://localhost:7986/_config/cors/headers      -Body  ( ConvertTo-Json "accept, authorization, content-type, origin, referer" )
$resp = IRM -Method PUT -Uri http://localhost:7986/_config/cors/methods      -Body  ( ConvertTo-Json "GET, PUT, POST, HEAD, DELETE" )
$resp = IRM -Method PUT -Uri http://localhost:7986/_config/log/level         -Body  ( ConvertTo-Json "error" )
$resp = IRM -Method PUT -Uri http://localhost:7984/_global_changes 
$resp = IRM -Method Put -Uri http://localhost:7984/_replicator 
$resp = IRM -Method Put -Uri http://localhost:7984/_users
#set the second instance to a different uuid 
$uuid = [GUID]::NewGuid().ToString("n")
$resp = IRM -Method Put -Uri http://localhost:7986/_config/couchdb/uuid -Body (ConvertTo-Json  $uuid ) -WebSession $couchsession

$resp = IRM -Method Post http://localhost:7984/_cluster_setup  -ContentType "application/json" -Body (ConvertTo-Json @{ action = "enable_cluster"; bind_address = "0.0.0.0";  username=$admin.Name; password=$admin.Password; node_count = "1"})