{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://paperspec.scient.ing/schemas/common.schema.json",
  "title": "Shared definitions",
  "description": "Definitions every scienting schema shares; spec/01-conventions.md.",
  "$defs": {
    "hash": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$",
      "description": "SHA-256 or HMAC-SHA-256, 64 lowercase hex digits."
    },
    "hash6": {
      "type": "string",
      "pattern": "^[0-9a-f]{6}$"
    },
    "nodeId": {
      "type": "string",
      "pattern": "^[a-hjkmnp-tv-z][0-9a-hjkmnp-tv-z]{6}$",
      "description": "Seven lowercase Crockford base32 characters, the first a letter."
    },
    "recordId": {
      "type": "string",
      "pattern": "^[a-hjkmnp-tv-z][0-9a-hjkmnp-tv-z]{6,25}$"
    },
    "key": {
      "type": "string",
      "pattern": "^[a-z0-9][a-z0-9._-]*$",
      "maxLength": 128
    },
    "alias": {
      "type": "string",
      "pattern": "^[a-z0-9][a-z0-9._-]*[._-][a-z0-9._-]*$",
      "maxLength": 128,
      "description": "A legacy ID; it always contains a separator, so it never looks like a node ID."
    },
    "nodeRef": {
      "anyOf": [
        {
          "$ref": "#/$defs/nodeId"
        },
        {
          "$ref": "#/$defs/alias"
        }
      ]
    },
    "qualifiedKey": {
      "type": "string",
      "pattern": "^([a-z0-9][a-z0-9._-]*/)?[a-z0-9][a-z0-9._-]*$",
      "maxLength": 257
    },
    "datasetId": {
      "type": "string",
      "pattern": "^ds-[a-z0-9][a-z0-9._-]*$",
      "maxLength": 128
    },
    "address": {
      "type": "string",
      "pattern": "^([a-z0-9][a-z0-9._-]*/)?[a-z0-9][a-z0-9._-]*#[a-z0-9][a-z0-9._-]*(@[0-9a-f]{6})?(\\[(0|[1-9][0-9]*):(0|[1-9][0-9]*)\\])?$"
    },
    "time": {
      "type": "string",
      "pattern": "^[0-9]{4}-[0-1][0-9]-[0-3][0-9]T[0-2][0-9]:[0-5][0-9]:[0-6][0-9]Z$"
    },
    "date": {
      "type": "string",
      "pattern": "^[0-9]{4}(-[0-1][0-9](-[0-3][0-9])?)?$"
    },
    "decimal": {
      "type": "string",
      "pattern": "^-?(0|[1-9][0-9]*)(\\.[0-9]+)?$",
      "description": "A decimal that carries meaning, as a string."
    },
    "level": {
      "enum": [
        "F0",
        "F1",
        "F2",
        "F3"
      ]
    },
    "receiptLevel": {
      "enum": [
        "F1",
        "F2",
        "F3"
      ]
    },
    "nodeKind": {
      "enum": [
        "document",
        "front",
        "title",
        "authors",
        "abstract",
        "keywords",
        "notes",
        "section",
        "heading",
        "paragraph",
        "sentence",
        "equation",
        "equation-line",
        "figure",
        "panel",
        "caption",
        "figure-note",
        "table",
        "table-head",
        "table-body",
        "table-note",
        "row",
        "cell",
        "list",
        "item",
        "quote",
        "code",
        "algorithm",
        "theorem",
        "footnote",
        "back",
        "acknowledgments",
        "references",
        "reference",
        "appendix"
      ]
    },
    "box": {
      "type": "array",
      "items": {
        "type": "number"
      },
      "minItems": 4,
      "maxItems": 4,
      "description": "[x0, y0, x1, y1] in PDF points, origin top left after rotation."
    },
    "size": {
      "type": "array",
      "items": {
        "type": "number",
        "exclusiveMinimum": 0
      },
      "minItems": 2,
      "maxItems": 2
    },
    "url": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9+.-]*:[^ ]+$"
    },
    "language": {
      "type": "string",
      "pattern": "^[A-Za-z]{2,3}(-[A-Za-z0-9]{1,8})*$"
    },
    "spdx": {
      "type": "string",
      "pattern": "^[A-Za-z0-9.+-]+( (AND|OR|WITH) [A-Za-z0-9.+-]+)*$"
    },
    "license": {
      "type": "object",
      "properties": {
        "spdx": {
          "$ref": "#/$defs/spdx"
        },
        "text": {
          "type": "string",
          "minLength": 1
        },
        "url": {
          "$ref": "#/$defs/url"
        }
      },
      "additionalProperties": false,
      "minProperties": 1
    },
    "tri": {
      "enum": [
        true,
        false,
        "unknown"
      ]
    },
    "base64": {
      "type": "string",
      "pattern": "^[A-Za-z0-9+/]+={0,2}$"
    },
    "processor": {
      "enum": [
        "local",
        "tenancy",
        "outside-no-retention",
        "outside"
      ]
    },
    "basis": {
      "enum": [
        "open-license",
        "publisher-tdm",
        "collective-license",
        "subscription",
        "own-work",
        "permission",
        "unknown"
      ]
    },
    "signature": {
      "type": "object",
      "properties": {
        "scheme": {
          "enum": [
            "ed25519",
            "ssh",
            "gpg",
            "sigstore"
          ]
        },
        "key": {
          "$ref": "#/$defs/key"
        },
        "value": {
          "type": "string",
          "minLength": 1
        }
      },
      "required": [
        "scheme",
        "key",
        "value"
      ],
      "additionalProperties": false
    },
    "evidence": {
      "type": "object",
      "properties": {
        "kind": {
          "enum": [
            "crop",
            "witness",
            "source-file",
            "person"
          ]
        },
        "sha256": {
          "$ref": "#/$defs/hash"
        },
        "node": {
          "$ref": "#/$defs/nodeId"
        },
        "page_fp": {
          "$ref": "#/$defs/hash"
        },
        "box": {
          "$ref": "#/$defs/box"
        },
        "by": {
          "$ref": "#/$defs/key"
        },
        "note": {
          "type": "string",
          "minLength": 1
        }
      },
      "required": [
        "kind"
      ],
      "additionalProperties": false,
      "allOf": [
        {
          "if": {
            "properties": {
              "kind": {
                "const": "person"
              }
            }
          },
          "then": {
            "required": [
              "by"
            ]
          },
          "else": {
            "required": [
              "sha256"
            ]
          }
        }
      ]
    },
    "author": {
      "oneOf": [
        {
          "type": "object",
          "properties": {
            "key": {
              "$ref": "#/$defs/key"
            }
          },
          "required": [
            "key"
          ],
          "additionalProperties": false
        },
        {
          "type": "object",
          "properties": {
            "model": {
              "type": "string",
              "minLength": 1
            },
            "run": {
              "type": "string",
              "minLength": 1
            }
          },
          "required": [
            "model",
            "run"
          ],
          "additionalProperties": false
        }
      ]
    },
    "hashing": {
      "oneOf": [
        {
          "type": "object",
          "properties": {
            "scheme": {
              "const": "plain"
            }
          },
          "required": [
            "scheme"
          ],
          "additionalProperties": false
        },
        {
          "type": "object",
          "properties": {
            "scheme": {
              "const": "hmac-team"
            },
            "key_id": {
              "type": "string",
              "pattern": "^[0-9a-f]{16}$"
            }
          },
          "required": [
            "scheme",
            "key_id"
          ],
          "additionalProperties": false
        },
        {
          "type": "object",
          "properties": {
            "scheme": {
              "const": "hkdf-pages"
            },
            "context": {
              "type": "string",
              "minLength": 1
            },
            "pages": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/hash"
              },
              "minItems": 1
            }
          },
          "required": [
            "scheme",
            "context",
            "pages"
          ],
          "additionalProperties": false
        }
      ]
    },
    "quote": {
      "type": "object",
      "properties": {
        "exact": {
          "type": "string",
          "maxLength": 200
        },
        "exact_hash": {
          "$ref": "#/$defs/hash"
        },
        "length": {
          "type": "integer",
          "minimum": 201
        },
        "prefix": {
          "type": "string",
          "minLength": 1,
          "maxLength": 32
        },
        "suffix": {
          "type": "string",
          "minLength": 1,
          "maxLength": 32
        }
      },
      "required": [],
      "additionalProperties": false,
      "oneOf": [
        {
          "required": [
            "exact"
          ],
          "not": {
            "anyOf": [
              {
                "required": [
                  "exact_hash"
                ]
              },
              {
                "required": [
                  "length"
                ]
              }
            ]
          }
        },
        {
          "required": [
            "exact_hash",
            "length"
          ],
          "not": {
            "required": [
              "exact"
            ]
          }
        }
      ]
    },
    "keyedQuote": {
      "type": "object",
      "properties": {
        "mac": {
          "$ref": "#/$defs/hash"
        },
        "length": {
          "type": "integer",
          "minimum": 0
        },
        "prefix_mac": {
          "$ref": "#/$defs/hash"
        },
        "suffix_mac": {
          "$ref": "#/$defs/hash"
        }
      },
      "required": [
        "mac",
        "length"
      ],
      "additionalProperties": false
    },
    "cellContext": {
      "type": "object",
      "properties": {
        "table_label": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "row_path": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "column_path": {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      },
      "required": [
        "table_label",
        "row_path",
        "column_path"
      ],
      "additionalProperties": false
    },
    "keyedContext": {
      "type": "object",
      "properties": {
        "table_label_mac": {
          "anyOf": [
            {
              "$ref": "#/$defs/hash"
            },
            {
              "type": "null"
            }
          ]
        },
        "row_path_mac": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/hash"
          }
        },
        "column_path_mac": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/hash"
          }
        }
      },
      "required": [
        "table_label_mac",
        "row_path_mac",
        "column_path_mac"
      ],
      "additionalProperties": false
    },
    "agent": {
      "type": "object",
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^urn:scienting:(key|person|software):[^ ]+$"
        },
        "type": {
          "enum": [
            "Person",
            "Software"
          ]
        },
        "name": {
          "type": "string",
          "minLength": 1
        }
      },
      "required": [
        "id",
        "type"
      ],
      "additionalProperties": false
    }
  }
}