{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "ArticlePublished",
  "description": "Article is marked as published",
  "version": "1.1",
  "type": "object",
  "properties": {
    "title": {
      "type": "string",
      "maxLength": 30
    },
    "content": {
      "type": "string"
    },
    "published": {
      "type": "boolean"
    },
    "date_published": {
      "type": "string",
      "format": "date"
    },
    "author": {
      "$ref": "#/$defs/Author"
    }
  },
  "required": [
    "title",
    "content"
  ],
  "additionalProperties": false,
  "$defs": {
    "Author": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "email": {
          "type": "string",
          "format": "email"
        }
      },
      "additionalProperties": false
    }
  }
}