{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://openbrandexchange.com/schemas/v0.1/UsageEvent.json",
  "type": "object",
  "title": "UsageEvent",
  "properties": {
    "asset_id": {
      "$ref": "Common.json#/$defs/Id"
    },
    "rendition": {
      "anyOf": [
        {
          "$ref": "Common.json#/$defs/RenditionName"
        },
        {
          "type": "null"
        }
      ]
    },
    "event": {
      "type": "string",
      "enum": [
        "synced",
        "published",
        "downloaded",
        "removed"
      ],
      "description": "synced: stored in the retailer's system; published: live in a channel; downloaded: fetched by a person; removed: taken offline."
    },
    "channel": {
      "anyOf": [
        {
          "$ref": "Common.json#/$defs/Channel"
        },
        {
          "type": "null"
        }
      ]
    },
    "at": {
      "$ref": "Common.json#/$defs/DateTime"
    },
    "count": {
      "type": "integer",
      "minimum": 1,
      "default": 1
    }
  },
  "required": [
    "asset_id",
    "event",
    "at"
  ],
  "additionalProperties": false,
  "patternProperties": {
    "^x-[a-z0-9]+-[a-z0-9_-]+$": true
  }
}