{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api.spragueenergy.com/schemas/fuel-order",
  "title": "Sprague Fuel Order",
  "description": "Schema for a Sprague Energy fuel delivery order for refined petroleum products (heating oil, diesel, gasoline, kerosene, biofuels) delivered to commercial and industrial customers in the northeastern United States.",
  "type": "object",
  "properties": {
    "order_id": {
      "type": "string",
      "description": "Unique order identifier",
      "examples": ["SPR-2026-001234"]
    },
    "status": {
      "type": "string",
      "enum": ["pending", "scheduled", "in_transit", "delivered", "cancelled"],
      "description": "Current order status"
    },
    "order_date": {
      "type": "string",
      "format": "date",
      "description": "Date the order was placed"
    },
    "delivery_date": {
      "type": "string",
      "format": "date",
      "description": "Scheduled or actual delivery date"
    },
    "customer": {
      "type": "object",
      "description": "Customer account information",
      "properties": {
        "account_id": {"type": "string"},
        "name": {"type": "string"},
        "contact_name": {"type": "string"},
        "phone": {"type": "string"},
        "email": {"type": "string", "format": "email"}
      },
      "required": ["account_id", "name"]
    },
    "delivery_location": {
      "type": "object",
      "description": "Delivery site address",
      "properties": {
        "name": {"type": "string", "description": "Site or facility name"},
        "street": {"type": "string"},
        "city": {"type": "string"},
        "state": {"type": "string"},
        "zip": {"type": "string"},
        "country": {"type": "string", "default": "US"}
      },
      "required": ["street", "city", "state", "zip"]
    },
    "product": {
      "type": "object",
      "description": "Fuel product details",
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "heating_oil",
            "diesel",
            "ultra_low_sulfur_diesel",
            "gasoline",
            "kerosene",
            "biofuel",
            "bunker_fuel",
            "residual_fuel"
          ],
          "description": "Type of petroleum product"
        },
        "blend": {
          "type": "string",
          "description": "Fuel blend specification (e.g., B5, B20, ULSD)"
        },
        "sulfur_content": {
          "type": "string",
          "description": "Sulfur content specification"
        }
      },
      "required": ["type"]
    },
    "quantity": {
      "type": "object",
      "description": "Order quantity",
      "properties": {
        "amount": {
          "type": "number",
          "minimum": 0,
          "description": "Quantity ordered"
        },
        "unit": {
          "type": "string",
          "enum": ["gallons", "barrels", "liters"],
          "default": "gallons"
        },
        "fill_type": {
          "type": "string",
          "enum": ["keep_full", "will_call", "automatic"],
          "description": "Whether to fill to capacity or deliver specified amount"
        }
      },
      "required": ["amount", "unit"]
    },
    "pricing": {
      "type": "object",
      "description": "Order pricing details",
      "properties": {
        "price_per_unit": {
          "type": "number",
          "description": "Price per gallon, barrel, or liter"
        },
        "currency": {
          "type": "string",
          "default": "USD"
        },
        "pricing_type": {
          "type": "string",
          "enum": ["fixed", "index", "market"],
          "description": "How the price is determined"
        },
        "total_amount": {
          "type": "number",
          "description": "Total order value"
        },
        "fuel_surcharge": {
          "type": "number",
          "description": "Fuel surcharge applied to delivery"
        }
      }
    },
    "terminal": {
      "type": "object",
      "description": "Source terminal for the delivery",
      "properties": {
        "terminal_id": {"type": "string"},
        "name": {"type": "string"},
        "location": {"type": "string"}
      }
    },
    "driver_notes": {
      "type": "string",
      "description": "Special delivery instructions for the driver"
    },
    "created_at": {
      "type": "string",
      "format": "date-time"
    },
    "updated_at": {
      "type": "string",
      "format": "date-time"
    }
  },
  "required": ["order_id", "status", "customer", "delivery_location", "product", "quantity"]
}