{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Briard Schema",
  "definitions": {
    "affiliations": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "affiliation": {
            "type": "string"
          }
        },
        "required": ["affiliation"]
      },
      "uniqueItems": true
    },
    "contributorType": {
      "type": "string",
      "enum": [
        "ContactPerson",
        "DataCollector",
        "DataCurator",
        "DataManager",
        "Distributor",
        "Editor",
        "HostingInstitution",
        "Producer",
        "ProjectLeader",
        "ProjectManager",
        "ProjectMember",
        "RegistrationAgency",
        "RegistrationAuthority",
        "RelatedPerson",
        "Researcher",
        "ResearchGroup",
        "RightsHolder",
        "Sponsor",
        "Supervisor",
        "WorkPackageLeader",
        "Other"
      ]
    },
    "descriptionType": {
      "type": "string",
      "enum": [
        "Abstract",
        "Methods",
        "SeriesInformation",
        "TableOfContents",
        "TechnicalInfo",
        "Other"
      ]
    },
    "funderIdentifierType": {
      "type": "string",
      "enum": ["ISNI", "GRID", "Crossref Funder ID", "Other"]
    },
    "nameIdentifiers": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "nameIdentifier": {
            "type": "string"
          },
          "nameIdentifierScheme": {
            "type": "string"
          },
          "schemeURI": {
            "type": "string",
            "format": "uri"
          }
        },
        "required": ["nameIdentifier", "nameIdentifierScheme"]
      },
      "uniqueItems": true
    },
    "nameType": {
      "type": "string",
      "enum": ["Organizational", "Personal"]
    },
    "noEmptyString": {
        "type": "string",
        "minLength": 1
    },
    "resourceTypeGeneral": {
      "type": "string",
      "enum": [
        "Audiovisual",
        "Collection",
        "DataPaper",
        "Dataset",
        "Event",
        "Image",
        "InteractiveResource",
        "Model",
        "PhysicalObject",
        "Service",
        "Software",
        "Sound",
        "Text",
        "Workflow",
        "Other"
      ]
    },
    "titleType": {
      "type": "string",
      "enum": ["AlternativeTitle", "Subtitle", "TranslatedTitle", "Other"]
    }
  },
  "prefixItems": {
    "id": {
      "type": "string",
      "format": "uri"
    },
    "types": {
      "type": "object",
      "properties": {
        "resourceType": {
          "type": "string"
        },
        "resourceTypeGeneral": {
          "$ref": "#/definitions/resourceTypeGeneral"
        },
        "schemaOrg": {
          "type": "string"
        },
        "citeproc": {
          "type": "string"
        },
        "bibtex": {
          "type": "string"
        },
        "ris": {
          "type": "string"
        }
      },
      "required": [
        "resourceType",
        "resourceTypeGeneral",
        "schemaOrg",
        "citeproc",
        "bibtex",
        "ris"
      ]
    },
    "doi": {
      "type": "string",
      "format": "uri"
    },
    "url": {
      "type": "string",
      "format": "uri"
    },
    "titles": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "title": {
            "type": "string"
          },
          "titleType": {
            "$ref": "#/definitions/titleType"
          },
          "lang": {
            "type": "string"
          }
        },
        "required": ["title"]
      },
      "minItems": 1,
      "uniqueItems": true
    },
    "creators": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "nameType": {
            "$ref": "#/definitions/nameType"
          },
          "givenName": {
            "type": "string"
          },
          "familyName": {
            "type": "string"
          },
          "nameIdentifiers": {
            "$ref": "#/definitions/nameIdentifiers"
          },
          "affiliations": {
            "$ref": "#/definitions/affiliations"
          },
          "lang": {
            "type": "string"
          }
        },
        "required": ["name"]
      },
      "minItems": 1,
      "uniqueItems": true
    },
    "contributors": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "contributorType": {
            "$ref": "#/definitions/contributorType"
          },
          "name": {
            "type": "string"
          },
          "nameType": {
            "$ref": "#/definitions/nameType"
          },
          "givenName": {
            "type": "string"
          },
          "familyName": {
            "type": "string"
          },
          "nameIdentifiers": {
            "$ref": "#/definitions/nameIdentifiers"
          },
          "affiliations": {
            "$ref": "#/definitions/affiliations"
          },
          "lang": {
            "type": "string"
          }
        },
        "required": ["contributorType", "name"]
      },
      "uniqueItems": true
    },
    "funding_references": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "funderName": {
            "type": "string"
          },
          "funderIdentifier": {
            "type": "string"
          },
          "funderIdentifierType": {
            "$ref": "#/definitions/funderIdentifierType"
          },
          "awardNumber": {
            "type": "string"
          },
          "awardURI": {
            "type": "string",
            "format": "uri"
          },
          "awardTitle": {
            "type": "string"
          }
        },
        "required": ["funderName"]
      },
      "uniqueItems": true
    },
    "publisher": {
      "$ref": "#/definitions/noEmptyString"
    },
    "publication_year": {
      "$ref": "#/definitions/noEmptyString"
    },
    "language": {
      "type": "string",
      "$comment": "Primary language of the resource. Allowed values are taken from  IETF BCP 47, ISO 639-1 language codes."
    },
    "sizes": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "uniqueItems": true
    },
    "formats": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "uniqueItems": true
    },
    "version_info": {
      "type": "string"
    },
    "rights_list": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "rights": {
            "type": "string"
          },
          "rightsURI": {
            "type": "string",
            "format": "uri"
          },
          "rightsIdentifier": {
            "type": "string"
          },
          "rightsIdentifierScheme": {
            "type": "string"
          },
          "schemeURI": {
            "type": "string",
            "format": "uri"
          },
          "lang": {
            "type": "string"
          }
        }
      },
      "uniqueItems": true
    },
    "descriptions": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "description": {
            "$ref": "#/definitions/noEmptyString"
          },
          "descriptionType": {
            "$ref": "#/definitions/descriptionType"
          },
          "lang": {
            "type": "string"
          }
        },
        "required": ["description", "descriptionType"]
      },
      "uniqueItems": true
    },
    "agency": {
      "type": "string",
      "enum": [ "Crossref", "DataCite", "JaLC", "KISTI", "mEDRA", "OP"]
    },
    "schema_version": {
      "type": "string",
      "const": "http://datacite.org/schema/kernel-4"
    },
    "state": {
      "type": "string",
      "enum": [ "draft", "findable", "registered", "not_found"]
    }
  },
  "required": [
    "id",
    "creators",
    "titles",
    "publisher",
    "publication_year",
    "types"
  ]
}