Helpers.psm1

function Get-Password($message)
{
    return Read-Host $message -AsSecureString
}

function Read-Input($message)
{
    return Read-Host $message
}

function Get-YesOrNoUserResponse($message)
{
    $input =  Read-Host "$message `r`n Y[yes] N[no]"
    if ($input -ieq "YES" -or $input -ieq "Y" ) 
    {
        return $true
    } 
    return $false
}

function Get-Password($message) {
    return Read-Host $message -AsSecureString
}

function Set-IisWebsiteBinding($SiteName, $LocalPort, $SslCertificateThumbprint, $HostName = $null)
{
    # 1. Remove existing binding information
    Get-WebBinding -Name $SiteName | ForEach {
        Write-Output ("Removing existing binding '{0}' from website '{1}'" -f $_.bindingInformation, $SiteName)

        # Remove the existing SSL binding for the current website port
        if ($_.Protocol -eq 'https') {
            $currentPort = $_.bindingInformation.Split(':')[1]
            $bindingHost = if ($HostName) { $HostName } else { '' }

            Get-Item -Path "IIS:\SslBindings\*" |
            Where Port -EQ $currentPort |
            Where Host -EQ $bindingHost |
            ForEach { Write-Output "Removing existing SSL binding '$($_.PSChildName)'"; $_ } |
            Remove-Item -Force -ErrorAction Ignore
        }

        $_ | Remove-WebBinding -Confirm:$false -ErrorAction Continue
    }

    # 2. Create the new binding
    $params = @{
        Protocol = 'https'
        Port     = $LocalPort
        Name     = $SiteName
    }

    if ($HostName) {
        $params['HostHeader'] = $HostName
        $params['SslFlags'] = 1 # Require Server Name Indication
    }

    Write-Output ("Creating new website binding:`r`n{0}" -f ($params | ConvertTo-Json))
    $binding = New-WebBinding @params

    # 3. Associate the SSL certificate with the binding
    $params = @{
        Path       = "IIS:\SslBindings\*!$LocalPort"
        Thumbprint = $SslCertificateThumbprint
    }

    if ($HostName) {
        $params['Path'] += "!$HostName"
        $params['SSLFlags'] = 1 # Require Server Name Indication
    }

    $website = Get-Website -Name $SiteName
    if ($webSite.bindings.Collection.certificateHash -eq '') {
        $binding = New-Item @params -Force -WarningAction Continue
    }
    Write-Output ("Set SSL binding for port '{0}' with certificate '{1}' for website '{2}'." -f $binding.Port, $binding.Thumbprint, $SiteName)
}
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