Script to use graphql api to fetch a list of emails and usernames from github,

githubSAMLuserdetails.ps1

param (
    [Parameter(Mandatory = $true)] $orgName
)

$pat = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(":$($ENV:GITHUB_TOKEN)"))
$query="{
  organization(login: `"$orgName`") {
    samlIdentityProvider {
      externalIdentities(first: 100) {
        nodes {
          user {
            login
            name
            email
          }
          samlIdentity {
            attributes {
              name
              value
            }
            emails {
              primary
              type
            }
          }
        }
      }
    }
  }
}"
$params = @{
    'Uri' = ('https://api.github.com/graphql')
    'Headers'     = @{'Authorization' = 'Basic ' + $pat }
    'Method'      = 'post'
    'ContentType' = 'application/json'
    'Body'        = ( @{query=$query} | ConvertTo-Json )
}
#add environments
$result=Invoke-RestMethod @params
$result.data.organization.samlIdentityProvider.externalIdentities.nodes | ForEach-Object {
    [pscustomobject]@{
        name = ($_.samlidentity.attributes | where {$_.name -like "*displayname*"}).value
        username = $_.user.login
        email = ($_.samlidentity.attributes | where {$_.name -like "*emailaddress*"}).value
    }
}