Install-ApacheTomcat.ps1

# https://tomcat.apache.org/tomcat-7.0-doc/windows-auth-howto.html
# https://shieldmaster.wordpress.com/2013/06/01/installing-apache-tomcat-v7-x-silently-with-command-line-options/

$defaultTomcatVersion = "8.0.30"

function Get-TomcatFilename(
    [string] $version = $defaultTomcatVersion
    )
{
    return "apache-tomcat-$version.exe"
}

function Get-TomcatDownloadUrl(
    [string] $version = $defaultTomcatVersion
    )
{
    $versionInfo = new-object System.Version $version
    $major = $versionInfo.Major;

    $filename = Get-TomcatFilename $version

    $url = "http://mirrors.advancedhosters.com/apache/tomcat/tomcat-$major/v$version/bin/$filename"

    return $url
}

function Get-TomcatDownloadedFileName(
    [string] $version = $defaultTomcatVersion
)
{
    $filename = Get-TomcatFileName $version

    return Join-Path $env:TEMP $filename
}

function Get-TomcatInstallationDirectory(
    [string] $version = $defaultTomcatVersion
)
{
    $versionInfo = new-object System.Version $version
    $major = $versionInfo.Major;
    $minor = $versionInfo.Minor;
    $versionStr = "$major.$minor";


    $dir = Join-Path $env:ProgramFiles "Apache Software Foundation"
    $dir = Join-Path $dir "Tomcat $versionStr"
    return $dir

}

function Get-TomcatServiceName(
    [string] $version = $defaultTomcatVersion
)
{

    $versionInfo = new-object System.Version $version
    $major = $versionInfo.Major;
    $minor = $versionInfo.Minor;
    $versionStr = "$major.$minor";

    return "Apache Tomcat $versionStr Tomcat$major";
}


function Install-Tomcat(
    [string] $version = $defaultTomcatVersion
)
{
    $installationDir = Get-TomcatInstallationDirectory $version
    $installed = Test-Path $installationDir

    if ($installed -eq $true){
        return;
    }

    $url = Get-TomcatDownloadUrl $version
    $filename = Get-TomcatFilename $version
    $downloadedFilename = Join-Path $env:TEMP $filename

    if ((Test-Path -Path $downloadedFilename) -eq $false)
    {
        Invoke-WebRequest -Uri $url -OutFile $downloadedFilename
    }

    $process = Start-Process -FilePath $downloadedFilename `
        -ArgumentList /S `
        -NoNewWindow -Wait
}

function Invoke-MoveIISDefaultWebSitePort()
{
    $binding = Get-WebBinding -Name "Default Web Site" -Port 80

    if ($binding -ne $null)
    {
        Set-WebBinding -Name "Default Web Site" -BindingInformation "*:80:" -PropertyName Port -Value 1080
    }
}

function Set-CatalinaHome(
    [string] $version = $defaultTomcatVersion
)
{
    $installationDirectory = Get-TomcatInstallationDirectory
    [Environment]::SetEnvironmentVariable('CATALINA_HOME', $catalinaHome, 'Machine')
}

function Start-Tomcat(
    [string] $version = $defaultTomcatVersion
)
{
    $serviceName = Get-TomcatServiceName $version

    $service = Get-service $serviceName
    if ($service -eq $null)
    {
        throw "Could not find an installed service named $serviceName"
    }

    $status = $service.Status;
    if ($status -ne "Stopped")
    {
        write-host "Service $serviceName was not started because its current status is $Status" -ForegroundColor Yellow
    }


    Start-Service $serviceName
}

try
{
    write-host "Verifying that IIS does not own port 80"
    Invoke-MoveIISDefaultWebSitePort

    write-host "Installing Tomcat"
    Install-Tomcat

    write-host "Setting Catalinia Home"
    Set-CatalinaHome

    write-host "Starting Tomcat"
    Start-Tomcat
}
catch
{
    write-error $_.Exception.Message
    exit -1
}