Create a Promotion

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    promotion: {
      name: 'Promotions Used in 2021',
      code: 'BLK-FRI',
      description: 'Save today with discount code XYZ at checkout.',
      usage_limit: 100,
      advertise: true,
      starts_at: '<string>',
      ends_at: '<string>',
      store_ids: ['2']
    }
  })
};

fetch('http://{defaultHost}/api/v2/platform/promotions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "data": {
    "id": "35",
    "type": "promotion",
    "attributes": {
      "description": "First 1000 Customers Save 20%",
      "expires_at": "2022-11-12T19:35:03.283Z",
      "starts_at": "2022-11-08T19:35:03.283Z",
      "name": "Black Friday 20% Off",
      "type": "Spree::Promotion",
      "usage_limit": 1000,
      "match_policy": "any",
      "code": "BLK-20",
      "advertise": true,
      "path": "/black-fri/today",
      "created_at": "2022-11-08T19:35:03.521Z",
      "updated_at": "2022-11-08T19:35:03.533Z",
      "public_metadata": {},
      "private_metadata": {}
    },
    "relationships": {
      "promotion_category": {
        "data": {
          "id": "15",
          "type": "promotion_category"
        }
      },
      "promotion_rules": {
        "data": []
      },
      "promotion_actions": {
        "data": []
      },
      "stores": {
        "data": [
          {
            "id": "382",
            "type": "store"
          },
          {
            "id": "383",
            "type": "store"
          },
          {
            "id": "381",
            "type": "store"
          }
        ]
      }
    }
  }
}