{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "License Convention",
  "description": "Schema for License Zarr convention",
  "type": "object",
  "properties": {
    "zarr_format": {
      "type": "integer",
      "description": "Zarr format version"
    },
    "node_type": {
      "type": "string",
      "const": "array",
      "description": "Type of Zarr node"
    },
    "attributes": {
      "type": "object",
      "description": "Zarr attributes containing convention metadata and properties",
      "properties": {
        "zarr_conventions": {
          "type": "array",
          "description": "Array of convention metadata objects",
          "contains": {
            "$ref": "#/$defs/conventionMetadata"
          }
        },
        "uom": {
          "$ref": "#/$defs/uom"
        }
      },
      "required": ["zarr_conventions", "uom"]
    }
  },
  "required": ["zarr_format", "node_type", "attributes"],
  "additionalProperties": true,
  "$defs": {
    "conventionMetadata": {
      "type": "object",
      "description": "Convention metadata object for use in zarr_conventions array",
      "properties": {
        "schema_url": {
          "type": "string",
          "const": "https://raw.githubusercontent.com/clbarnes/zarr-convention-uom/refs/tags/v1/schema.json",
          "description": "URL to the JSON Schema definition for this convention"
        },
        "spec_url": {
          "type": "string",
          "const": "https://github.com/clbarnes/zarr-convention-uom/blob/v1/README.md",
          "description": "URL to the full specification document"
        },
        "uuid": {
          "type": "string",
          "const": "3bbe438d-df37-49fe-8e2b-739296d46dfb",
          "description": "UUID that permanently identifies this convention"
        },
        "name": {
          "type": "string",
          "description": "Human-readable name of the convention. Should be 'uom'"
        },
        "description": {
          "type": "string",
          "const": "Units of measurement for Zarr arrays",
          "description": "Brief description of the convention's purpose and usage"
        }
      },
      "anyOf": [
        {
          "required": ["schema_url"]
        },
        {
          "required": ["spec_url"]
        },
        {
          "required": ["uuid"]
        }
      ],
      "additionalProperties": false
    },
    "uom": {
      "type": "object",
      "description": "Unit of measurement for this numeric array data",
      "properties": {
        "description": {
          "type": "string",
          "description": "Free-text description of the unit of measurement"
        },
        "ucum": {
          "$ref": "#/$defs/ucum"
        }
      },
      "required": ["ucum"]
    },
    "ucum": {
      "type": "object",
      "description": "Unified Code for Units of Measurement information",
      "properties": {
        "version": {
          "type": "string",
          "description": "UCUM specification version"
        },
        "unit": {
          "type": "string",
          "description": "UCUM unit string"
        }
      }
    }
  }
}