How to give a user a complimentary Ghost subscription

async function giveComplimentaryAccess() {
  //try {
    console.log(`Granting complimentary access to member ${memberId} for tier ${tierId}...`);
    
    // First, get the member to verify they exist

    const memberToken = generateToken(ghostAdminApiKey);
    const memberResult = await fetch(`${ghostApiUrl}/ghost/api/admin/members/${memberId}/?include=tiers`, {
      method: 'GET',
      headers: {
        'Authorization': `Ghost ${memberToken}`,
        'Content-Type': 'application/json',
        'Accept-Version': 'v6.8'
      }
    });
    const memberData = await memberResult.json();
    const member = memberData?.members?.[0];
    if (!member) {
        throw new Error('Member not found');
    }
   // Check if the user already has an active status tier that isn't this one.
   try {

   
   const activeTiers = member?.tiers?.filter(tier => tier.id !== tierId) || 
       member?.subscriptions?.filter(subscription => subscription.tier.id !== tierId && subscription.status === 'active');
   if (activeTiers?.length > 0) {
    throw new Error('User already has an active status tier that isn\'t this one');
   }
    
    let tierSetResult = await fetch(`${ghostApiUrl}/ghost/api/admin/members/${memberId}/?include=tiers`, {
      method: 'PUT',
      headers: {
        'Authorization': `Ghost ${memberToken}`,
        'Content-Type': 'application/json',
        'Accept-Version': 'v6.8'
      },
      body: JSON.stringify({
        members: [{
            id: memberId,
            tiers: [{id: tierId, expiry_at: '2026-01-01'}]
        }]
      })
    });
    const tierSetData = await tierSetResult.json();
    return true;
} catch (error) {
    console.error('Error:', error);
    return false;
}
}