{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "design_versions output",
  "type": "object",
  "required": [
    "status",
    "action",
    "compositionId",
    "latest",
    "versions",
    "accepted",
    "durationMs"
  ],
  "additionalProperties": false,
  "properties": {
    "status": {
      "type": "string",
      "const": "ok"
    },
    "action": {
      "type": "string",
      "const": "versions"
    },
    "compositionId": {
      "type": "string"
    },
    "latest": {
      "type": [
        "integer",
        "null"
      ]
    },
    "versions": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "version",
          "parentVersion",
          "operation",
          "createdAt",
          "schemaHash",
          "head",
          "artifacts"
        ],
        "additionalProperties": false,
        "properties": {
          "version": {
            "type": "integer"
          },
          "parentVersion": {
            "type": [
              "integer",
              "null"
            ]
          },
          "operation": {
            "type": "string"
          },
          "createdAt": {
            "type": "string"
          },
          "schemaHash": {
            "type": "string"
          },
          "head": {
            "type": [
              "string",
              "null"
            ]
          },
          "artifacts": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      }
    },
    "accepted": {
      "description": "The standing acceptance (the last one in accepted.json), or null when no version was accepted.",
      "anyOf": [
        {
          "type": "null"
        },
        {
          "type": "object",
          "required": [
            "version",
            "acceptedAt",
            "acceptances"
          ],
          "additionalProperties": false,
          "properties": {
            "version": {
              "type": "integer",
              "minimum": 1
            },
            "acceptedAt": {
              "type": "string"
            },
            "acceptances": {
              "type": "integer",
              "minimum": 1
            }
          }
        }
      ]
    },
    "durationMs": {
      "type": "number",
      "minimum": 0
    }
  }
}