Office365.Connect

7.0

Private/Get-Prerequisite.ps1

function Get-Prerequisite
{
    $modules = "CredentialManager","MicrosoftTeams","MSOnline","SharePointPnPPowerShellOnline"
    [System.Collections.ArrayList]$missingmodules = @()

    #Microsoft Online Services Sign-in Assistant for IT Professionals RTW
    if ((Get-ChildItem "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall") | Where-Object { $_.GetValue("DisplayName") -like "Microsoft Online Services Sign-in Assistant" })
    {
        Write-Host ("Microsoft Online Services Sign-in Assistant for IT Professionals RTW found") -Fore Green
    }
    else
    {
        Write-Host ("Microsoft Online Services Sign-in Assistant for IT Professionals RTW missing") -Fore Red
        $missingmodules += "Signin"
    }

    #SharePoint Online Management Shell
    if ((Get-ChildItem "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall") | Where-Object { $_.GetValue("DisplayName") -like "SharePoint Online Management Shell" })
    {
        Write-Host ("SharePoint Online Management Shell found") -Fore Green
    }
    else
    {
        Write-Host ("SharePoint Online Management Shell missing") -Fore Red
        $missingmodules += "Microsoft.Online.SharePoint.PowerShell"
    }

    #Check modules
    foreach ($module in $modules)
    {    
        if (Get-Module -ListAvailable -Name $module)
        {
            Write-Host ("Module $module found") -Fore Green
        }
        else
        {
            Write-Host ("Module $module missing") -Fore Red
            $missingmodules += $module
        }
    }

    #Check Azure AD
    if(Get-Module -ListAvailable -Name "AzureAD")
    {
        Write-Host ("Module AzureAD found") -Fore Green
    }
    elseif(Get-Module -ListAvailable -Name "AzureADPreview"){
        Write-Host ("Module AzureADPreview found") -Fore Green
    }
    else {
        Write-Host ("Module AzureAD missing") -Fore Red
        $missingmodules += "AzureAD"
    }

    #If services is missing and modules
    if ($missingmodules.count -ge 1)
    {
        $title = "Install missing modules?"
        $message = "Do you want to install missing modules now?"
        $yes = New-Object System.Management.Automation.Host.ChoiceDescription "&Yes"
        $no = New-Object System.Management.Automation.Host.ChoiceDescription "&No"
        $options = [System.Management.Automation.Host.ChoiceDescription[]]($yes,$no)
        $choice = $host.UI.PromptForChoice($title,$message,$options,1)

        if ($choice -eq 0)
        {
            if (Get-CurrentPrivilege -eq $true)
            {
                foreach ($module in $missingmodules)
                {
                        Install-Component $module                
                }
                Write-Host ""
                Write-Host "We had to install some modules that require PowerShell to restart." -Fore Yellow
                Write-Host "Please restart PowerShell and run Connect-Office365 again" -Fore Yellow
                WaitAnyKey
                exit
            }
        }
        Clear-Host
        Get-Prerequisite
    }
    Clear-Host
    
}

function Get-CurrentPrivilege
{
    $privilege = [bool](([System.Security.Principal.WindowsIdentity]::GetCurrent()).groups -match "S-1-5-32-544")
    if($privilege -eq $false){Write-Host ("Please start PowerShell as administrator to install modules") -Fore Red; WaitAnyKey; exit}
    return $privilege
}

function Get-SigninAssistant
{
    if(Get-CurrentPrivilege -eq $true)
    {
    Write-Host("Downloading Microsoft Online Services Sign-in Assistant for IT Professionals RTW") -Fore Yellow
    $URL = "https://download.microsoft.com/download/7/1/E/71EF1D05-A42C-4A1F-8162-96494B5E615C/msoidcli_64bit.msi"
    $Filename = $URL.Split('/')[-1]
    Invoke-WebRequest -Uri $URL -UseBasicParsing -OutFile "$env:TEMP\$Filename" 

    Write-Host("Installing Microsoft Online Services Sign-in Assistant for IT Professionals RTW") -Fore Yellow
    & $env:TEMP\$Filename /qn
    Write-Host("Microsoft Online Services Sign-in Assistant for IT Professionals RTW has been installed") -Fore Green
    Start-Sleep -Seconds 3
    }
}

function Get-SPOPowerShell
{
    if(Get-CurrentPrivilege -eq $true)
    {
    Write-Host("Downloading SharePoint Online Management Shell") -Fore Yellow
    $URL = "https://download.microsoft.com/download/0/2/E/02E7E5BA-2190-44A8-B407-BC73CA0D6B87/SharePointOnlineManagementShell_7723-1200_x64_en-us.msi"
    $Filename = $URL.Split('/')[-1]
    Invoke-WebRequest -Uri $URL -UseBasicParsing -OutFile "$env:TEMP\$Filename" 

    Write-Host("Installing SharePoint Online Management Shell") -Fore Yellow
    & $env:TEMP\$Filename /qn
    Write-Host("SharePoint Online Management Shell has been installed") -Fore Green
    Start-Sleep -Seconds 3
    }
}

function Install-Component($module)
{
    switch($module)
    {
        "Signin"{Get-SigninAssistant}
        "Microsoft.Online.SharePoint.PowerShell"{Get-SPOPowerShell}
        default{
            Write-Host "Installing module $module" -Fore Yellow
            Install-Module $module -Force
            Write-Host "Installed module $module" -Fore Green
        }
    }
}