Create a checkout

curl --request POST \
  --url https://api.stan-app.fr/v1/checkouts \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '{
  "return_url": "<string>",
  "total_amount": 123,
  "session_id": "<string>",
  "order_id": "<string>",
  "subtotal_amount": 123,
  "discount_amount": 123,
  "tax_rate": 123,
  "tax_cost": 123,
  "discount_code": "<string>",
  "line_items": [
    {
      "product_id": "<string>",
      "quantity": 123,
      "unit_price": 123,
      "discount_amount": 123,
      "description": "<string>",
      "sku": "<string>",
      "image_url": "<string>",
      "product_url": "<string>"
    }
  ]
}'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "total_amount": 123,
  "total_amount_before_discount": 123,
  "subtotal_amount": 123,
  "discount_amount": 123,
  "tax_rate": 123,
  "discount_code": "<string>",
  "is_testmode": true,
  "line_items": [
    {
      "product_id": "<string>",
      "quantity": 123,
      "unit_price": 123,
      "discount_amount": 123,
      "description": "<string>",
      "sku": "<string>",
      "image_url": "<string>",
      "product_url": "<string>"
    }
  ],
  "merchant": {
    "name": "<string>",
    "website": "<string>",
    "privacy_policy_url": "<string>",
    "general_terms_url": "<string>",
    "logo_url": "<string>"
  },
  "session_id": "<string>",
  "order_id": "<string>"
}