{
  "$schema": "https://json-schema.org/draft-07/schema",
  "title": "zb realization document",
  "type": "object",
  "required": ["derivationHash", "realizations"],
  "properties": {
    "derivationHash": {
      "$ref": "#/definitions/hash",
      "description": "The hash of the derivation's equivalence class"
    },
    "realizations": {
      "type": "object",
      "propertyNames": {
        "$ref": "#/definitions/outputName",
        "description": "Derivation output name"
      },
      "additionalProperties": {
        "type": "array",
        "items": {"$ref": "#/definitions/realization"}
      }
    }
  },
  "definitions": {
    "realization": {
      "type": "object",
      "required": ["outputPath", "referenceClasses"],
      "properties": {
        "outputPath": {
          "$ref": "#/definitions/path",
          "description": "The absolute store path of the realized output for the given name"
        },
        "referenceClasses": {"$ref": "#/definitions/referenceClasses"},
        "signatures": {
          "type": "array",
          "description": "Set of signatures",
          "default": [],
          "items": {"$ref": "#/definitions/signature"}
        }
      }
    },
    "referenceClasses": {
      "type": "array",
      "description": "A set of other realization outputs referenced by this store object",
      "default": [],
      "items": {"$ref": "#/definitions/referenceClass"}
    },
    "referenceClass": {
      "type": "object",
      "required": ["path", "realization"],
      "additionalProperties": false,
      "properties": {
        "path": {
          "$ref": "#/definitions/path",
          "description": "The absolute path of the referenced store object"
        },
        "realization": {
          "oneOf": [
            {"type": "null"},
            {
              "type": "object",
              "required": ["derivationHash", "outputName"],
              "additionalProperties": false,
              "properties": {
                "derivationHash": {
                  "$ref": "#/definitions/hash",
                  "description": "The hash of the referenced derivation equivalence class"
                },
                "outputName": {
                  "$ref": "#/definitions/outputName",
                  "description": "The name of the derivation output"
                }
              }
            }
          ]
        }
      }
    },
    "outputName": {
      "type": "string",
      "minLength": 1,
      "examples": ["out"]
    },
    "hash": {
      "type": "object",
      "required": ["algorithm", "digest"],
      "additionalProperties": false,
      "properties": {
        "algorithm": {
          "description": "Hash algorithm",
          "default": "sha256",
          "enum": ["md5", "sha1", "sha256", "sha512"]
        },
        "digest": {
          "$ref": "#/definitions/base64",
          "description": "Hash data (Base-64 encoded)"
        }
      }
    },
    "signature": {
      "type": "object",
      "required": ["format", "publicKey", "signature"],
      "properties": {
        "format": {
          "const": "ed25519",
          "description": "Signature format (more formats may be added over time)"
        },
        "publicKey": {
          "$ref": "#/definitions/base64",
          "description": "Public key (Base-64 encoded)"
        },
        "signature": {
          "$ref": "#/definitions/base64",
          "description": "Signature data (Base-64 encoded)"
        }
      }
    },
    "realizationForSignature": {
      "title": "Signature realization object",
      "description": "An object serialized in JCS for computing signatures",
      "type": "object",
      "additionalProperties": false,
      "required": ["derivationHash", "outputName", "outputPath", "referenceClasses"],
      "properties": {
        "derivationHash": {
          "$ref": "#/definitions/hash",
          "description": "The hash of the derivation's equivalence class"
        },
        "outputName": {
          "$ref": "#/definitions/outputName",
          "description": "Derivation output name"
        },
        "outputPath": {
          "$ref": "#/definitions/path",
          "description": "The absolute store path of the realized output for the given name"
        },
        "referenceClasses": {
          "$ref": "#/definitions/referenceClasses",
          "$comment": "The reference classes MUST be sorted by path, then by realization (nulls first), then by realization/derivationHash/algorithm, then by realization/derivationHash/digest, then by realization/outputName."
        }
      }
    },
    "path": {
      "type": "string",
      "minLength": 1
    },
    "base64": {
      "type": "string",
      "pattern": "^([a-zA-Z0-9+/]{4})*[a-zA-Z0-9+/]{2}([a-zA-Z0-9+/=]=|[a-zA-Z0-9+/]{2})$"
    }
  }
}