{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/westinghouse-air-brake-technologies/main/json-schema/westinghouse-air-brake-technologies-work-order-schema.json",
  "title": "Work Order",
  "description": "Represents a maintenance work order in Wabtec's Condition Monitoring Management System (CMMS).",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique work order identifier."
    },
    "workOrderNumber": {
      "type": "string",
      "description": "Human-readable work order number."
    },
    "assetId": {
      "type": "string",
      "description": "Identifier of the locomotive or railcar being serviced."
    },
    "assetType": {
      "type": "string",
      "description": "Type of asset.",
      "enum": ["locomotive", "railcar", "wayside-equipment", "signaling-equipment"]
    },
    "workType": {
      "type": "string",
      "description": "Type of maintenance work.",
      "enum": ["preventive", "corrective", "inspection", "overhaul", "emergency"]
    },
    "status": {
      "type": "string",
      "description": "Current work order status.",
      "enum": ["open", "in-progress", "pending-parts", "completed", "cancelled"]
    },
    "priority": {
      "type": "string",
      "description": "Work order priority level.",
      "enum": ["critical", "high", "medium", "low"]
    },
    "description": {
      "type": "string",
      "description": "Description of the maintenance work required."
    },
    "location": {
      "type": "string",
      "description": "Maintenance facility or location where work is performed."
    },
    "assignedTechnician": {
      "type": "string",
      "description": "Name or ID of the technician assigned to this work order."
    },
    "createdAt": {
      "type": "string",
      "format": "date-time"
    },
    "scheduledDate": {
      "type": "string",
      "format": "date-time"
    },
    "completedAt": {
      "type": "string",
      "format": "date-time"
    },
    "faultCodes": {
      "type": "array",
      "description": "Fault codes that triggered this work order.",
      "items": {"type": "string"}
    },
    "partsUsed": {
      "type": "array",
      "description": "Parts consumed during maintenance.",
      "items": {
        "type": "object",
        "properties": {
          "partNumber": {"type": "string"},
          "description": {"type": "string"},
          "quantity": {"type": "integer"}
        }
      }
    }
  },
  "required": ["id", "assetId", "workType", "status", "priority"]
}