Functions/Connect-MicrosoftOnline.ps1

<#
    .SYNOPSIS
        Connect the PowerShell modules to the specified tenant.
 
    .DESCRIPTION
        This command uses the registered Microsoft Online tenant with it's
        connection details to connect to all services and their moduels
        specified in the scope.
 
    .INPUTS
        None.
 
    .OUTPUTS
        MicrosoftOnlineFever.Connection. The opened connections.
 
    .EXAMPLE
        PS C:\> Connect-MicrosoftOnline -Name 'Contoso'
        Connect to all supported scopes on the specified tenant.
 
    .EXAMPLE
        PS C:\> Connect-MicrosoftOnline -Name 'Contoso' -Scope 'Exchange', 'SharePoint'
        Connect to Exchange Online and SharePoint Online on the specified
        tenant.
 
    .EXAMPLE
        PS C:\> m365 'Contoso'
        Use one of the aliases to connect to the tenant.
 
    .LINK
        https://github.com/claudiospizzi/MicrosoftOnlineFever
#>

function Connect-MicrosoftOnline
{
    [CmdletBinding()]
    [Alias('aad', 'o365', 'm365')]
    param
    (
        # The tenant name.
        [Parameter(Mandatory = $true, Position = 0)]
        [System.String]
        $Name,

        [Parameter(Mandatory = $false)]
        [ValidateSet('AzureAD', 'MSOL', 'Graph', 'Azure', 'Exchange', 'SecurityCompliance', 'SharePoint', 'Teams', 'SkypeForBusiness')]
        [System.String[]]
        $Scope,

        # Use the preview modules if available.
        [Parameter(Mandatory = $false)]
        [Alias('Preview')]
        [Switch]
        $UsePreviewModule
    )

    # Define the default scopes, if non was specified.
    if (-not $PSBoundParameters.ContainsKey('Scope'))
    {
        $Scope = 'AzureAD', 'MSOL', 'Graph', 'Azure', 'Exchange', 'SecurityCompliance', 'SharePoint', 'Teams', 'SkypeForBusiness'
    }

    Test-MicrosoftOnlineModuleDependency -Scope $Scope -UsePreviewModule:$UsePreviewModule

    # Ensure that the Exchange scope is used if the SecurityCompliance is
    # requested. This depends on the Exchange scope.
    if ($Scope -contains 'SecurityCompliance' -and $Scope -notcontains 'Exchange')
    {
        $Scope += 'Exchange'
    }

    # Ensure that the Teams scope is used if the SkypeForBusiness is requested.
    # This depends on the Teams scope.
    if ($Scope -contains 'SkypeForBusiness' -and $Scope -notcontains 'Teams')
    {
        $Scope += 'Teams'
    }

    $tenant = Get-MicrosoftOnlineTenant -Name $Name
    if ($null -eq $tenant)
    {
        throw "Tenant named $Name not found."
    }
    if (@($tenant).Count -gt 1)
    {
        throw "Multiple tenants named $Name found."
    }

    $orderedScopes = 'AzureAD', 'MSOL', 'Graph', 'Azure', 'Exchange', 'SecurityCompliance', 'SharePoint', 'Teams', 'SkypeForBusiness'

    foreach ($currentScope in $orderedScopes)
    {
        if ($currentScope -in $Scope)
        {
            try
            {
                $connection = [PSCustomObject] @{
                    PSTypeName = 'MicrosoftOnlineFever.Connection'
                    Scope      = $currentScope
                    Module     = ''
                    Tenant     = ''
                    Domain     = ''
                }

                # Microsoft Azure Active Directory PowerShell for Graph (*-AzureAD*)
                if ($currentScope -eq 'AzureAD')
                {
                    $contextAzureAD = Connect-AzureAD -TenantId $tenant.TenantId -ApplicationId $tenant.ApplicationId -CertificateThumbprint $tenant.CertificateThumbprint

                    $contextAzureAD | ForEach-Object {
                        $connection.Module = $(if ($UsePreviewModule.IsPresent) { 'AzureADPreview' } else { 'AzureAD' })
                        $connection.Tenant = $_.TenantId
                        $connection.Domain = $_.TenantDomain
                    }
                }

                # Microsoft Azure Active Directory Module for Windows PowerShell (*-Msol*)
                if ($currentScope -eq 'MSOL')
                {
                    $msolCredential = [System.Management.Automation.PSCredential]::new($tenant.FallbackUsername, $tenant.FallbackPassword)
                    Connect-MsolService -Credential $msolCredential

                    Get-MsolDomain | Where-Object { $_.IsInitial } | ForEach-Object {
                        $connection.Module = 'MSOnline'
                        $connection.Tenant = 'n/a'
                        $connection.Domain = $_.Name
                    }
                }

                # Microsoft Graph (*-Mg*)
                if ($currentScope -eq 'Graph')
                {
                    Connect-MgGraph -TenantId $tenant.TenantId -ClientID $tenant.ApplicationId -CertificateThumbprint $tenant.CertificateThumbprint | Out-Null

                    Get-MgContext | ForEach-Object {
                        $connection.Module = 'Microsoft.Graph'
                        $connection.Tenant = $_.TenantId
                        $connection.Domain = 'n/a'
                    }
                }

                # Azure PowerShell (*-Az*)
                if ($currentScope -eq 'Azure')
                {
                    $contextAzure = Connect-AzAccount -Tenant $tenant.TenantId -ApplicationId $tenant.ApplicationId -CertificateThumbprint $tenant.CertificateThumbprint

                    $contextAzure | ForEach-Object {
                        $connection.Module = 'Az'
                        $connection.Tenant = $_.Context.Tenant.Id
                        $connection.Domain = 'n/a'
                    }
                }

                # Exchange Online PowerShell V2 (*-EXO* / Classical Exchange Cmdlets)
                if ($currentScope -eq 'Exchange')
                {
                    Connect-ExchangeOnline -Organization $tenant.TenantDomain -AppId $tenant.ApplicationId -CertificateThumbprint $tenant.CertificateThumbprint -ShowBanner:$false | Out-Null

                    Get-OrganizationConfig | ForEach-Object {
                        $connection.Module = 'ExchangeOnlineManagement'
                        $connection.Tenant = 'n/a'
                        $connection.Domain = $_.Name
                    }
                }

                # Security & Compliance (based on Exchange Online PowerShell V2)
                if ($currentScope -eq 'SecurityCompliance')
                {
                    $ippsCredential = [System.Management.Automation.PSCredential]::new($tenant.FallbackUsername, $tenant.FallbackPassword)
                    Connect-IPPSSession -Credential $ippsCredential -WarningAction 'SilentlyContinue'

                    $connection.Module = 'ExchangeOnlineManagement'
                    $connection.Tenant = 'n/a'
                    $connection.Domain = 'n/a'
                }

                # Microsoft 365 Patterns and Practices PowerShell Cmdlets (*-PnP*)
                if ($currentScope -eq 'SharePoint')
                {
                    # Disable update change and telemetry
                    $Env:PNPPOWERSHELL_UPDATECHECK = $false
                    $Env:PNPPOWERSHELL_DISABLETELEMETRY = $true

                    $tenantSharePointUrl = 'https://{0}.sharepoint.com' -f $tenant.TenantDomain.Split('.')[0]
                    Connect-PnPOnline -ClientId $tenant.ApplicationId -CertificateBase64Encoded $tenant.CertificatePfx -CertificatePassword $tenant.CertificateSecret -Url $tenantSharePointUrl -Tenant $tenant.TenantDomain -Verbose:$false | Out-Null

                    Get-PnPConnection| ForEach-Object {
                        $connection.Module = 'PnP.PowerShell'
                        $connection.Tenant = 'n/a'
                        $connection.Domain = $_.Tenant
                    }
                }

                # Microsoft Teams PowerShell
                if ($currentScope -eq 'Teams')
                {
                    $contextTeams = Connect-MicrosoftTeams -TenantId $tenant.TenantId -ApplicationId $tenant.ApplicationId -CertificateThumbprint $tenant.CertificateThumbprint

                    $contextTeams | ForEach-Object {
                        $connection.Module = 'MicrosoftTeams'
                        $connection.Tenant = $_.TenantId.Guid
                        $connection.Domain = $_.TenantDomain
                    }
                }

                # Microsoft SkypeForBusiness PowerShell
                if ($currentScope -eq 'SkypeForBusiness')
                {
                    $csCredential = [System.Management.Automation.PSCredential]::new($tenant.FallbackUsername, $tenant.FallbackPassword)
                    Import-PSSession -Session (New-CsOnlineSession -Credential $csCredential) | Out-Null

                    $connection.Module = 'ExchangeOnlineManagement'
                    $connection.Tenant = 'n/a'
                    $connection.Domain = 'n/a'
                }

                Write-Output $connection
            }
            catch
            {
                Write-Warning "Failed to connect to $currentScope with: $_"
            }
        }
    }
}

# Register the argument completer for the Name parameter
Register-ArgumentCompleter -CommandName 'Connect-MicrosoftOnline' -ParameterName 'Name' -ScriptBlock {
    param ($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
    Import-MicrosoftOnlineTenant -Path $Script:MicrosoftOnlineFeverTenantPath | ForEach-Object {
        [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
    }
}