{
  "name": "Product",
  "fields": [
    { "name": "name", "required": true },
    { "name": "description" },
    { "name": "price", "default": 0 },
    { "name": "stock", "default": 0 },
    { "name": "size", "default": [] },
    { "name": "color", "default": [] },
    { "name": "images", "default": [] },
    { "name": "categoryId" },
    { "name": "active", "default": true }
  ],
  "methods": [
    {
      "name": "decreaseStock",
      "params": ["quantity"],
      "body": "this.stock = Math.max(this.stock - quantity, 0);"
    },
    {
      "name": "isAvailable",
      "params": ["quantity"],
      "body": "return this.stock >= quantity;"
    },
    {
      "name": "applyDiscount",
      "params": ["percentage"],
      "body": "this._price = this._price * (1 - percentage / 100); this._touchUpdatedAt();"
    },
    {
      "name": "resetPrice",
      "params": [],
      "body": "this._price = 0; this._touchUpdatedAt();"
    }
  ]
}