{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/cdisc-org/data-definition-engine/schemas/defaults/defaults.schema.json",
  "title": "DDE defaults dictionary",
  "description": "Well-known default values the defaults loader (src/loaders/defaults, pipeline stage F) writes into a DDS where no other loader supplied a value. Entries are grouped by the kind of DDS object they fill. Values use DDS attribute names. See DEFAULT_METADATA_LOADER.md.",
  "type": "object",
  "required": ["schemaVersion"],
  "additionalProperties": false,
  "properties": {
    "$schema": {"type": "string"},
    "schemaVersion": {
      "description": "The dictionary format version, MAJOR.MINOR. The loader refuses an unknown major version.",
      "type": "string",
      "pattern": "^[0-9]+\\.[0-9]+$"
    },
    "name": {"type": "string"},
    "description": {"type": "string"},
    "items": {
      "description": "Define items (Define-XML ItemDef): the items of tabulation itemGroups and of their ValueList slices.",
      "type": "array",
      "items": {"$ref": "#/$defs/itemEntry"}
    },
    "itemGroups": {
      "description": "Tabulation itemGroups (Define-XML ItemGroupDef).",
      "type": "array",
      "items": {"$ref": "#/$defs/itemGroupEntry"}
    },
    "crfItems": {
      "description": "CRF items (ODM ItemDef): the items in the Concept slices of Form itemGroups.",
      "type": "array",
      "items": {"$ref": "#/$defs/crfItemEntry"}
    },
    "crfSections": {
      "description": "CRF sections (ODM 2.0 ItemGroupDef Type=\"Section\"): the Section slices of Form itemGroups.",
      "type": "array",
      "items": {"$ref": "#/$defs/crfSectionEntry"}
    }
  },
  "$defs": {
    "name": {
      "description": "The DDS object's name. A leading -- matches any longer name that ends with the rest (--SEQ matches LBSEQ). * matches every object in the section and needs domains.",
      "type": "string",
      "minLength": 1,
      "not": {"const": "--"}
    },
    "domainList": {
      "type": "array",
      "minItems": 1,
      "uniqueItems": true,
      "items": {"type": "string", "pattern": "^[A-Z][A-Z0-9]{1,7}$"}
    },
    "starNeedsDomains": {
      "if": {"required": ["name"], "properties": {"name": {"const": "*"}}},
      "then": {"required": ["domains"]}
    },
    "dataType": {
      "description": "The DDS DataType enum (schemas/dds/dds.yaml).",
      "enum": ["text", "integer", "float", "date", "time", "datetime", "boolean", "double", "hex",
               "base64", "hexBinary", "durationDatetime"]
    },
    "length": {
      "description": "An integer, or a length computed from a DDS study-level string: its length plus an optional constant.",
      "oneOf": [
        {"type": "integer", "minimum": 1},
        {
          "type": "object",
          "required": ["lengthOf"],
          "additionalProperties": false,
          "properties": {
            "lengthOf": {"enum": ["studyName", "protocolName"]},
            "plus": {"type": "integer", "minimum": 0}
          }
        }
      ]
    },
    "origin": {
      "description": "One or more origins, using the DDS OriginType and OriginSource enums.",
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["type", "source"],
        "additionalProperties": false,
        "properties": {
          "type": {"enum": ["Assigned", "Collected", "Derived", "Not Available", "Other", "Predecessor",
                            "Protocol"]},
          "source": {"enum": ["Investigator", "Sponsor", "Subject", "Vendor"]}
        }
      }
    },
    "text": {"type": "string", "minLength": 1},
    "itemEntry": {
      "type": "object",
      "required": ["name", "values"],
      "additionalProperties": false,
      "properties": {
        "name": {"$ref": "#/$defs/name"},
        "domains": {"$ref": "#/$defs/domainList"},
        "excludeDomains": {"$ref": "#/$defs/domainList"},
        "description": {"type": "string"},
        "values": {
          "type": "object",
          "minProperties": 1,
          "additionalProperties": false,
          "properties": {
            "dataType": {"$ref": "#/$defs/dataType"},
            "length": {"$ref": "#/$defs/length"},
            "significantDigits": {"type": "integer", "minimum": 0},
            "displayFormat": {"$ref": "#/$defs/text"},
            "origin": {"$ref": "#/$defs/origin"}
          }
        }
      },
      "allOf": [{"$ref": "#/$defs/starNeedsDomains"}]
    },
    "itemGroupEntry": {
      "type": "object",
      "required": ["name", "values"],
      "additionalProperties": false,
      "properties": {
        "name": {"$ref": "#/$defs/name"},
        "domains": {"$ref": "#/$defs/domainList"},
        "excludeDomains": {"$ref": "#/$defs/domainList"},
        "description": {"type": "string"},
        "values": {
          "type": "object",
          "minProperties": 1,
          "additionalProperties": false,
          "properties": {
            "keySequence": {"type": "array", "minItems": 1, "items": {"$ref": "#/$defs/text"}},
            "structure": {"$ref": "#/$defs/text"},
            "purpose": {"$ref": "#/$defs/text"},
            "description": {"$ref": "#/$defs/text"}
          }
        }
      },
      "allOf": [{"$ref": "#/$defs/starNeedsDomains"}]
    },
    "crfItemEntry": {
      "type": "object",
      "required": ["name", "values"],
      "additionalProperties": false,
      "properties": {
        "name": {"$ref": "#/$defs/name"},
        "domains": {"$ref": "#/$defs/domainList"},
        "excludeDomains": {"$ref": "#/$defs/domainList"},
        "description": {"type": "string"},
        "values": {
          "type": "object",
          "minProperties": 1,
          "additionalProperties": false,
          "properties": {
            "dataType": {"$ref": "#/$defs/dataType"},
            "length": {"$ref": "#/$defs/length"},
            "origin": {"$ref": "#/$defs/origin"},
            "question": {"$ref": "#/$defs/text"},
            "prompt": {"$ref": "#/$defs/text"},
            "crfCompletionInstructions": {"$ref": "#/$defs/text"}
          }
        }
      },
      "allOf": [{"$ref": "#/$defs/starNeedsDomains"}]
    },
    "crfSectionEntry": {
      "type": "object",
      "required": ["name", "values"],
      "additionalProperties": false,
      "properties": {
        "name": {"$ref": "#/$defs/name"},
        "domains": {"$ref": "#/$defs/domainList"},
        "excludeDomains": {"$ref": "#/$defs/domainList"},
        "description": {"type": "string"},
        "values": {
          "type": "object",
          "minProperties": 1,
          "additionalProperties": false,
          "properties": {
            "crfSectionInstructions": {"$ref": "#/$defs/text"}
          }
        }
      },
      "allOf": [{"$ref": "#/$defs/starNeedsDomains"}]
    }
  }
}