const apiKey = 'ml_prod_...';

const response = await fetch('https://api.mailist.com/v1/contacts', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${apiKey}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    email: 'jan.kowalski@example.com',
    firstName: 'Jan',
    lastName: 'Kowalski',
    listId: 'list_abc123',
    customFields: {
      company: 'ABC Sp. z o.o.',
      city: 'Warszawa'
    }
  })
});

const contact = await response.json();
console.log('Utworzono kontakt:', contact.id);

const campaignId = 'campaign_xyz789';

const response = await fetch(
  `https://api.mailist.com/v1/campaigns/${campaignId}/stats`,
  {
    headers: {
      'Authorization': `Bearer ${apiKey}`
    }
  }
);

const stats = await response.json();
console.log('Open rate:', stats.openRate);
console.log('Click rate:', stats.clickRate);

const contacts = [
  { email: 'user1@example.com', firstName: 'Anna' },
  { email: 'user2@example.com', firstName: 'Piotr' },
  // ... do 1000 kontaktów per request
];

const response = await fetch('https://api.mailist.com/v1/contacts/bulk', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${apiKey}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    listId: 'list_abc123',
    contacts: contacts,
    skipDuplicates: true
  })
});

const result = await response.json();
console.log(`Zaimportowano ${result.created} kontaktów`);
console.log(`Pominięto ${result.skipped} duplikatów`);

// Express.js endpoint
app.post('/webhook/abandoned-cart', async (req, res) => {
  const { userEmail, cartItems, cartValue } = req.body;

  // Dodaj do listy "Abandoned Cart"
  await fetch('https://api.mailist.com/v1/contacts', {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.MAILIST_API_KEY}`,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      email: userEmail,
      listId: 'list_abandoned_cart',
      customFields: {
        cartValue: cartValue,
        lastCartUpdate: new Date().toISOString()
      }
    })
  });

  // Trigger automatyzacji (jeśli jest workflow na TAG_ADDED)
  await fetch(`https://api.mailist.com/v1/events`, {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.MAILIST_API_KEY}`,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      email: userEmail,
      event: 'cart_abandoned',
      data: { cartValue, items: cartItems.length }
    })
  });

  res.json({ success: true });
});

{
  "error": "Unauthorized",
  "message": "Invalid or missing API key"
}

// ✅ Poprawnie
headers: {
  'Authorization': 'Bearer ml_prod_...'
}

// ❌ Źle
headers: {
  'Authorization': 'ml_prod_...' // brak "Bearer "
}

{
  "error": "Forbidden",
  "message": "Insufficient permissions: requires contacts.write"
}

{
  "error": "Rate limit exceeded",
  "limit": 300,
  "remaining": 0,
  "resetAt": "2025-01-07T10:15:00Z"
}