{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://marketing.khelvision.com/schemas/rally-index.preview.v1.schema.json",
  "title": "KhelVision rally-index preview v1",
  "description": "Preview-only output direction. This is not a generally available API contract.",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema", "api_version", "model_release", "sport", "source", "rallies"],
  "properties": {
    "schema": {
      "const": "khelvision.rally-index.preview.v1"
    },
    "api_version": {
      "const": "preview"
    },
    "model_release": {
      "type": "string",
      "minLength": 1,
      "maxLength": 160
    },
    "sport": {
      "description": "Preview result vocabulary only; enum membership does not establish current API or pilot availability.",
      "enum": ["badminton", "table-tennis", "pickleball"]
    },
    "source": {
      "type": "object",
      "additionalProperties": false,
      "required": ["duration_ms", "timebase"],
      "properties": {
        "duration_ms": {
          "type": "integer",
          "minimum": 1
        },
        "timebase": {
          "const": "source-media"
        }
      }
    },
    "rallies": {
      "type": "array",
      "description": "Ordering, non-overlap, unique IDs, and source-duration bounds are semantic invariants validated beyond JSON Schema.",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["id", "start_ms", "end_ms"],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "^r-[0-9]{4,}$"
          },
          "start_ms": {
            "type": "integer",
            "minimum": 0
          },
          "end_ms": {
            "type": "integer",
            "minimum": 1
          }
        }
      }
    }
  }
}