{
  "lexicon": 1,
  "id": "tools.ozone.report.createActivity",
  "defs": {
    "main": {
      "type": "procedure",
      "description": "Register an activity on a report. For state-change activity types, validates the transition and updates report.status atomically.",
      "input": {
        "encoding": "application/json",
        "schema": {
          "type": "object",
          "required": ["reportId", "activity"],
          "properties": {
            "reportId": {
              "type": "integer",
              "description": "ID of the report to record activity on"
            },
            "activity": {
              "type": "union",
              "refs": [
                "tools.ozone.report.defs#queueActivity",
                "tools.ozone.report.defs#assignmentActivity",
                "tools.ozone.report.defs#escalationActivity",
                "tools.ozone.report.defs#closeActivity",
                "tools.ozone.report.defs#reopenActivity",
                "tools.ozone.report.defs#noteActivity"
              ],
              "description": "The type of activity to record."
            },
            "internalNote": {
              "type": "string",
              "description": "Optional moderator-only note. Not visible to reporters."
            },
            "publicNote": {
              "type": "string",
              "description": "Optional public-facing note, potentially visible to the reporter."
            },
            "isAutomated": {
              "type": "boolean",
              "description": "Set true when this activity is triggered by an automated process. Defaults to false.",
              "default": false
            }
          }
        }
      },
      "output": {
        "encoding": "application/json",
        "schema": {
          "type": "object",
          "required": ["activity"],
          "properties": {
            "activity": {
              "type": "ref",
              "ref": "tools.ozone.report.defs#reportActivityView"
            }
          }
        }
      },
      "errors": [
        {
          "name": "ReportNotFound",
          "description": "No report exists with the given reportId"
        },
        {
          "name": "InvalidStateTransition",
          "description": "The requested state transition is not permitted from the report's current status"
        },
        {
          "name": "AlreadyInTargetState",
          "description": "The report is already in the status implied by this activity type"
        }
      ]
    }
  }
}