{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/united-states-steel/refs/heads/main/json-structure/steeltrack-order-structure.json",
  "name": "Order",
  "description": "A U.S. Steel customer order.",
  "properties": {
    "orderId": {
      "description": "Unique order identifier.",
      "example": "ORD-2025-001234",
      "type": "string"
    },
    "customerId": {
      "description": "Customer account identifier.",
      "example": "CUST-001234",
      "type": "string"
    },
    "purchaseOrder": {
      "description": "Customer purchase order number.",
      "example": "PO-2025-5678",
      "type": "string"
    },
    "status": {
      "description": "Current order status.",
      "enum": [
        "OPEN",
        "IN_PRODUCTION",
        "SHIPPED",
        "CLOSED",
        "CANCELLED"
      ],
      "example": "IN_PRODUCTION",
      "type": "string"
    },
    "facility": {
      "description": "Production facility name or code.",
      "example": "Gary Works",
      "type": "string"
    },
    "product": {
      "description": "Steel product type.",
      "example": "Hot-Rolled Coil",
      "type": "string"
    },
    "grade": {
      "description": "Steel grade designation.",
      "example": "A36",
      "type": "string"
    },
    "quantity": {
      "description": "Order quantity.",
      "example": 50.0,
      "type": "double"
    },
    "quantityUnit": {
      "description": "Unit of measure for quantity.",
      "example": "tons",
      "type": "string"
    },
    "orderDate": {
      "description": "Date the order was placed.",
      "example": "2025-01-15",
      "type": "date"
    },
    "requiredDate": {
      "description": "Customer required delivery date.",
      "example": "2025-03-01",
      "type": "date"
    },
    "estimatedDeliveryDate": {
      "description": "Estimated delivery date from US Steel.",
      "example": "2025-02-28",
      "type": "date"
    }
  },
  "type": "object"
}