{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/worldbank/json-schema/country.json",
  "title": "Country",
  "description": "World Bank country record with geographical and economic classification data.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "ISO 3166-1 alpha-3 country code",
      "example": "USA"
    },
    "iso2Code": {
      "type": "string",
      "description": "ISO 3166-1 alpha-2 country code",
      "minLength": 2,
      "maxLength": 2,
      "example": "US"
    },
    "name": {
      "type": "string",
      "description": "Official country name",
      "example": "United States"
    },
    "region": {
      "$ref": "#/$defs/ClassificationRef",
      "description": "World Bank geographic region"
    },
    "adminregion": {
      "$ref": "#/$defs/ClassificationRef",
      "description": "World Bank administrative region (for developing countries)"
    },
    "incomeLevel": {
      "$ref": "#/$defs/ClassificationRef",
      "description": "World Bank income level classification"
    },
    "lendingType": {
      "$ref": "#/$defs/ClassificationRef",
      "description": "World Bank lending type classification"
    },
    "capitalCity": {
      "type": "string",
      "description": "Name of the capital city",
      "example": "Washington D.C."
    },
    "longitude": {
      "type": "string",
      "description": "Longitude of the country centroid",
      "example": "-95.7129"
    },
    "latitude": {
      "type": "string",
      "description": "Latitude of the country centroid",
      "example": "37.0902"
    }
  },
  "required": ["id", "iso2Code", "name"],
  "$defs": {
    "ClassificationRef": {
      "type": "object",
      "description": "Reference to a World Bank classification category",
      "properties": {
        "id": {
          "type": "string",
          "description": "Classification code"
        },
        "iso2code": {
          "type": "string",
          "description": "ISO 2-character code for the classification"
        },
        "value": {
          "type": "string",
          "description": "Human-readable classification name"
        }
      },
      "required": ["id", "value"]
    }
  }
}