Scripts/ProtectionSource/Register-CohesityProtectionSourceO365.ps1

function Register-CohesityProtectionSourceO365
{
  [CmdletBinding()]
  Param(
    [Parameter(Mandatory=$true)]
    [System.Management.Automation.PSCredential]$Credential,
    [Parameter(Mandatory=$true)]
    [ValidateNotNullOrEmpty()]
    [String]$AppId,
    [Parameter(Mandatory=$true)]
    [ValidateNotNullOrEmpty()]
    [String]$AppSecretKey
  )

  Begin {
    if(-not (Test-Path -Path "$HOME/.cohesity"))
    {
      throw "Failed to authenticate. Please connect to the Cohesity Cluster using 'Connect-CohesityCluster'"
    }
    $session = Get-Content -Path $HOME/.cohesity | ConvertFrom-Json
  }

  Process {

    $token = 'Bearer ' + $session.AccessToken.AccessToken
    $headers = @{"Authorization"=$token}
    $uri = $session.ClusterUri + '/irisservices/api/v1/public/protectionSources/register'

    $o365RegistrationParameters = @{
        environment = "kO365"
        endpoint = "https://outlook.office365.com/EWS/Exchange.asmx"
        office365Type = "kDomain"
        office365Credentials = {
          grantType = "client_credentials"
          scope = "https://graph.microsoft.com/.default"
          clientId = $AppId
          clientSecret = $AppSecretKey
        }
        username = $Credential.UserName
        password = $Credential.GetNetworkCredential().Password
    }

    $request = $o365RegistrationParameters | ConvertTo-Json
    $result = Invoke-RestApi -Method Post -Headers $headers -Uri $uri -Body $request
    $result
  } # End of process
} # End of function