FunctionsPublic/Get-GraphSharepointHomePage.ps1

<#
.SYNOPSIS
Get home page of specified SharePoint site
 
.DESCRIPTION
Uses the SharePoint ID to determine what the current home page of the specified site is
 
.PARAMETER accessToken
A Microsoft Graph API access token with the required permissions
 
.PARAMETER sharePointSiteID
The SharePoint site to get the home page for
 
#>

function Get-GraphSharepointHomePage
{
    [cmdletbinding()]
    param (
        [PSObject]$accessToken, 
        [string]$sharePointSiteID
    )

    process
    {
        $responseBody = Invoke-RestMethod `
            -Uri "https://graph.microsoft.com/beta/sites/$($sharePointSiteID)/pages?$filter=pageLayout eq 'Home'" `
            -Headers @{
                "Authorization" = "Bearer $($accessToken.AccessTokenCredential.GetNetworkCredential().password)"
            }

        if($null -eq $responseBody.id)
        {
            $groupsResult = $responseBody.value
        }
        else
        {
            $groupsResult = $responseBody
        }

        $groupsResult
    }
}