{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://datashare.ed.ac.uk/schema/item.json",
  "title": "Edinburgh DataShare Item",
  "description": "A DSpace repository item as returned by the Edinburgh DataShare REST API /items endpoint.",
  "type": "object",
  "properties": {
    "uuid": { "type": "string", "format": "uuid" },
    "name": { "type": "string" },
    "handle": { "type": ["string", "null"], "description": "Persistent handle, e.g. 10283/5507." },
    "type": { "type": "string", "const": "item" },
    "expand": { "type": "array", "items": { "type": "string" } },
    "lastModified": { "type": "string" },
    "parentCollection": { "type": ["object", "null"] },
    "parentCollectionList": { "type": ["array", "null"] },
    "parentCommunityList": { "type": ["array", "null"] },
    "metadata": {
      "type": ["array", "null"],
      "items": { "$ref": "#/$defs/metadataEntry" }
    },
    "bitstreams": {
      "type": ["array", "null"],
      "items": { "$ref": "#/$defs/bitstream" }
    },
    "link": { "type": "string" }
  },
  "required": ["uuid", "name", "type", "handle"],
  "$defs": {
    "metadataEntry": {
      "type": "object",
      "properties": {
        "key": { "type": "string" },
        "value": { "type": "string" },
        "language": { "type": ["string", "null"] },
        "schema": { "type": "string" },
        "element": { "type": "string" },
        "qualifier": { "type": ["string", "null"] }
      },
      "required": ["key", "value"]
    },
    "bitstream": {
      "type": "object",
      "properties": {
        "uuid": { "type": "string", "format": "uuid" },
        "name": { "type": "string" },
        "bundleName": { "type": "string" },
        "format": { "type": "string" },
        "mimeType": { "type": "string" },
        "sizeBytes": { "type": "integer" },
        "retrieveLink": { "type": "string" },
        "sequenceId": { "type": "integer" },
        "checkSum": {
          "type": "object",
          "properties": {
            "value": { "type": "string" },
            "checkSumAlgorithm": { "type": "string" }
          }
        }
      },
      "required": ["uuid", "name"]
    }
  }
}