{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/LineItem",
  "title": "LineItem",
  "type": "object",
  "description": "A product line item in a cart or order with quantity, pricing, and discount information.",
  "required": [
    "id",
    "productId",
    "name",
    "variant",
    "price",
    "totalPrice",
    "quantity",
    "lineItemMode",
    "priceMode"
  ],
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique identifier for the line item within the cart."
    },
    "productId": {
      "type": "string",
      "description": "ID of the product this line item references."
    },
    "name": {
      "$ref": "#/components/schemas/LocalizedString"
    },
    "variant": {
      "$ref": "#/components/schemas/ProductVariant"
    },
    "price": {
      "$ref": "#/components/schemas/Price"
    },
    "totalPrice": {
      "$ref": "#/components/schemas/Money"
    },
    "quantity": {
      "type": "integer",
      "minimum": 1,
      "description": "Quantity of this product variant in the cart."
    },
    "lineItemMode": {
      "type": "string",
      "enum": [
        "Standard",
        "GiftLineItem"
      ],
      "description": "Whether this is a standard or gift line item."
    },
    "priceMode": {
      "type": "string",
      "enum": [
        "Platform",
        "ExternalTotal",
        "ExternalPrice"
      ],
      "description": "How the price for this line item is determined."
    }
  }
}