{
  "$id": "https://raw.githubusercontent.com/bcgov/nr-pies/refs/heads/main/docs/spec/element/data/coding.schema.json",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Coding",
  "description": "A representation of a defined concept using a symbol from a defined Code System.",
  "type": "object",
  "properties": {
    "code": {
      "$ref": "https://raw.githubusercontent.com/bcgov/nr-pies/refs/heads/main/docs/spec/element/data/code.schema.json"
    },
    "code_display": {
      "type": "string",
      "description": "A human-readable display name for the code value, intended for readability and not computation."
    },
    "code_set": {
      "type": "array",
      "description": "An ordered set of code symbols, where the last element must match the code attribute. The set must contain at least one symbol, preserve order, and not include duplicates.",
      "items": {
        "$ref": "https://raw.githubusercontent.com/bcgov/nr-pies/refs/heads/main/docs/spec/element/data/code.schema.json"
      },
      "minItems": 1,
      "maxItems": 3,
      "uniqueItems": true
    },
    "code_system": {
      "type": "string",
      "description": "An identifying URI string representing the source code system for the code value.",
      "format": "uri",
      "pattern": "^https://bcgov.github.io/nr-pies/docs/spec/code_system/.*$"
    }
  },
  "required": ["code", "code_set", "code_system"]
}