{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api.ecostruxureit.com/schemas/device",
  "title": "EcoStruxure IT Device",
  "description": "A physical or virtual device discovered and monitored by EcoStruxure IT Expert, including UPS, PDU, CRAC, and other data center infrastructure equipment.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique identifier for the device."
    },
    "name": {
      "type": "string",
      "description": "Display name of the device."
    },
    "type": {
      "type": "string",
      "description": "Device type classification (e.g., UPS, PDU, CRAC, Server, Network)."
    },
    "status": {
      "type": "string",
      "enum": ["normal", "warning", "critical", "unknown"],
      "description": "Current operational status of the device."
    },
    "location": {
      "$ref": "#/$defs/LocationRef",
      "description": "The location where this device is installed."
    },
    "ipAddress": {
      "type": "string",
      "description": "IP address of the device."
    },
    "macAddress": {
      "type": "string",
      "description": "MAC address of the device."
    },
    "firmwareVersion": {
      "type": "string",
      "description": "Firmware version installed on the device."
    },
    "serialNumber": {
      "type": "string",
      "description": "Manufacturer serial number."
    },
    "modelNumber": {
      "type": "string",
      "description": "Manufacturer model number."
    },
    "sensors": {
      "type": "array",
      "description": "Sensors attached to or reported by this device.",
      "items": { "$ref": "#/$defs/SensorRef" }
    },
    "alarms": {
      "type": "array",
      "description": "Active alarms for this device.",
      "items": { "$ref": "#/$defs/AlarmRef" }
    },
    "lastUpdated": {
      "type": "string",
      "format": "date-time",
      "description": "Timestamp of the most recent data update from this device."
    }
  },
  "required": ["id", "name", "type"],
  "$defs": {
    "LocationRef": {
      "type": "object",
      "properties": {
        "id": { "type": "string" },
        "name": { "type": "string" }
      }
    },
    "SensorRef": {
      "type": "object",
      "properties": {
        "id": { "type": "string" },
        "label": { "type": "string" },
        "unit": { "type": "string" }
      }
    },
    "AlarmRef": {
      "type": "object",
      "properties": {
        "id": { "type": "string" },
        "severity": { "type": "string", "enum": ["critical", "warning", "info"] },
        "description": { "type": "string" }
      }
    }
  }
}