invitation_params = {
    team_id: 1,
    emails: ["beyonce@email.com","kelly@email.com","michelle@email.com"]
}

def emails_from_team(team_id)
  user_team_lookup_user_ids = UserTeamLookup.where(team_id: team_id).pluck(:user_id)
  User.where(id: user_tenant_lookup_user_ids).pluck(:email)
end

def remove_existing_emails(invitation_params)
  tenant_users_emails = emails_from_tenant(invitation_params["tenant_id"])
  downcased_email_params = invitation_params["emails"].map { |email| email.downcase}
  downcased_email_params -= tenant_users_emails
end

def invite(invitation_params)
  invites = []
  invitation_params["emails"] = remove_existing_emails(invitation_params)
end