Create and Delete Website from PowerShell.

I thought I would share the whole solution rather than just the SSL Binding code.

Import-Module WebAdministration

function Add-Site([string]$folder, [string]$sitename, [string]$protocol="http", [int]$port, [int]$sslport, [string] $hostheader, [string]$thumbprint, [string]$appPoolName, [hashtable] $appDetails, [string]$version="v4.0")
{
 
 if ( -not ( Get-Website | ? {$_.Name -eq $sitename}))
 {
  if ($hostheader)
  {
   New-Item iis:\Sites\$sitename -bindings @{protocol="$protocol";bindingInformation="*:$($port):$($hostheader)"} -physicalPath $folder
  }
  else
  {
   New-Item iis:\Sites\$sitename -bindings @{protocol="$protocol";bindingInformation="*:$($port):"} -physicalPath $folder
  }
  
  if (-not($thumbprint) -or -not ($sslport))
  {
   Write-Error "Ensure that a Certificate Thumbprint and SSLport are set for HTTPS Bindings"
   Write-Host "Let's clean up a little bit here..."
   DeleteSite $sitename
   exit
  }
  else
  {
   AddSSLBinding $thumbprint $sitename $sslport $hostheader
  }

  if ($appDetails -and $appPoolName)
  {
   CreateAppPool $appPoolName
   SetAppPoolVersion $appPoolName $version
   foreach ($app in $appDetails.GetEnumerator())
   {
    MakeApplication $sitename $app.Name $app.Value 
    SetAppPool $sitename $app.Name $appPoolName
   }
  }
  else
  {
   Write-Warning "The website $sitename has been created with no applications or applicationPools. Nothing wrong with this, just saying"
  }
 }
}

function Remove-Site([string]$sitename, $appPoolName)
{  
  Get-ChildItem IIS:\SslBindings | ? {$_.Sites -eq $sitename} | %{ Remove-Item iis:\sslbindings\$($_.pschildname) -Force -Recurse}
  Get-ChildItem IIS:\Sites\ | ?{$_.Name -eq $sitename} |% { Remove-Item  IIS:\Sites\$sitename  -Force -Recurse}
  Get-ChildItem IIS:\AppPools\ |? {$_.Name -eq $appPoolName} | %{ Remove-Item IIS:\AppPools\$appPoolName -Force -Recurse }  
}

function AddSSLBinding([string]$thumbprint, [String]$sitename, [int]$port, [String]$hostheader)
{
 
 $cert = Get-ChildItem cert:\LocalMachine\My | ?{$_.Thumbprint -eq $thumbprint}
 
 if( -not($(Get-ChildItem iis:\sslbindings| ? {$_.Port -eq $port})))
 {
  New-Item IIS:\SslBindings\0.0.0.0!$port -Value $cert | out-null
  
  if ($hostheader)
  {
   New-ItemProperty $(join-path iis:\Sites $sitename) -name bindings -value @{protocol="https";bindingInformation="*:$($port):$($hostheader)";certificateStoreName="My";certificateHash=$thumbprint} | out-null
  }
  else
  {
   New-ItemProperty $(join-path iis:\Sites $sitename) -name bindings -value @{protocol="https";bindingInformation="*:$($port):";certificateStoreName="My";certificateHash=$thumbprint} | out-null
  }
 }
 else
 {
  Write-Warning "SSL binding already exists on port $port"
 }
}

function MakeApplication([string]$sitename, [string]$applicationName, [string]$folder)
{
  New-Item "IIS:\Sites\$sitename\$applicationName" -physicalPath $folder -type Application | out-null
}

function CreateAppPool([string]$applicationPoolName)
{
  New-Item IIS:\AppPools\$applicationPoolName | out-null
}

function SetAppPool([string]$sitename, [string]$application, [string]$applicationPool)
{
  Set-ItemProperty IIS:\sites\$sitename\$application -name applicationPool -value $applicationPool | out-null
}

function SetAppPoolVersion([string]$applicationPool, [string]$version)
{
  Set-ItemProperty IIS:\AppPools\$applicationPool managedRuntimeVersion $version | out-null
}

Export-ModuleMember -Function Add-Site,Remove-Site

An example of how to use it the above module to add a new site, assuming that it's been saved as Module.psm1. The thumbprint needs to be of a certificate already installed in your server on the LocalMachine\My store. This will create a website with an http binding in port 80 and an https binding on port 443 using the certificate passed in (thumbprint). An application and virtual directory called TestService will be created. All that remains is to copy the website files.

Import-Module Module.psm1
$path="F:\TestWebSite"
$testAppdetails=@{"TestService" = "$Path\TestService"}
Add-Site -folder $path -sitename "testsite" -protocol "http" -port 80 -sslport 443 -thumbprint "FE1D6F1A5F217A7724034BA42D8C57BEC36DD168" -appPoolName "testapppool"  -appDetails $testappDetails

and an example of how to remove the same site:

Remove-Site -sitename "testsite" -appPoolName "testapppool"