{
  "$schema": "https://json-schema.org/draft/2019-09/schema",
  "$id": "https://oasis-open.org/openc2/jadn/v1.0",
  "description": "Validates structure of a JADN schema, does not check values",
  "type": "object",
  "required": ["types"],
  "additionalProperties": false,
  "properties": {
    "info": {
      "type": "object",
      "required": ["package"],
      "additionalProperties": false,
      "properties": {
        "package": {"type": "string"},
        "version": {"type": "string"},
        "title": {"type": "string"},
        "description": {"type": "string"},
        "comment": {"type":  "string"},
        "copyright": {"type": "string"},
        "license": {"type": "string"},
        "namespaces": {"$ref": "#/definitions/Namespaces"},
        "exports": {"$ref": "#/definitions/Exports"},
        "config": {"$ref": "#/definitions/Config"}
      }
    },
    "types": {
      "type": "array",
      "items": {
        "type": "array",
        "minItems": 2,
        "maxItems": 5,
        "items": [
          {"$ref": "#/definitions/TypeName"},
          {"$ref": "#/definitions/BaseType"},
          {"$ref": "#/definitions/Options"},
          {"$ref": "#/definitions/Description"},
          {"$ref": "#/definitions/Fields"}
        ]
      }
    }
  },
  "definitions": {
    "Namespaces": {
      "type": "object",
      "propertyNames": {"$ref": "#/definitions/NSID"},
      "patternProperties": {
        "": {
          "type": "string",
          "format": "uri"
        }
      }
    },
    "Exports": {
      "type": "array",
      "items": {"type": "string"}
    },
    "Config": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "$MaxBinary": {"type": "integer", "minValue": 1},
        "$MaxString": {"type": "integer", "minValue": 1},
        "$MaxElements": {"type": "integer", "minValue": 1},
        "$Sys": {"type": "string", "minLength": 1, "maxLength": 1},
        "$TypeName": {"type": "string", "minLength": 1, "maxLength": 127},
        "$FieldName": {"type": "string", "minLength": 1, "maxLength": 127},
        "$NSID": {"type": "string", "minLength": 1, "maxLength": 127}
      }
    },
    "Fields": {
      "type": "array",
      "items": [
        {"anyOf": [
          {"$ref": "#/definitions/Item"},
          {"$ref": "#/definitions/Field"}
        ]}
      ]
    },
    "Item": {
      "type": "array",
      "minItems": 2,
      "maxItems": 3,
      "items": [
        {"type": "integer"},
        {"type": "string"},
        {"$ref": "#/definitions/Description"}
      ]
    },
    "Field": {
      "type": "array",
      "minItems": 3,
      "maxItems": 5,
      "items": [
        {"type": "integer"},
        {"$ref": "#/definitions/FieldName"},
        {"$ref": "#/definitions/TypeRef"},
        {"$ref": "#/definitions/Options"},
        {"$ref": "#/definitions/Description"}
      ]
    },
    "NSID": {
      "type": "string"
    },
    "TypeName": {
      "type": "string"
    },
    "TypeRef": {
      "type": "string"
    },
    "FieldName": {
      "type": "string"
    },
    "BaseType": {
      "type": "string",
      "enum": ["Binary", "Boolean", "Integer", "Number", "String",
               "Enumerated", "Choice",
               "Array", "ArrayOf", "Map", "MapOf", "Record"]
    },
    "Options": {
      "type": "array",
      "items": {"type": "string"}
    },
    "Description": {
      "type": "string"
    }
  }
}