{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://wanxiang.ai/contracts/play-loop/cost-reservation.schema.json",
  "title": "CostReservationV1",
  "description": "CostReservation/1。成本账必须在同一锁内同时预留 Judge A/B，随后才能并行发起模型请求。",
  "type": "object",
  "required": [
    "schemaVersion", "reservationId", "ledgerVersion", "judgePackageHash", "pricingSnapshotHash",
    "slots", "reservedRmb", "retryReservedRmb", "status", "settlements"
  ],
  "properties": {
    "schemaVersion": { "const": "CostReservation/1" },
    "reservationId": { "type": "string", "minLength": 1 },
    "ledgerVersion": { "type": "string", "minLength": 1 },
    "judgePackageHash": { "$ref": "#/$defs/sha256" },
    "pricingSnapshotHash": { "$ref": "#/$defs/sha256" },
    "slots": {
      "type": "array", "minItems": 2, "maxItems": 2,
      "items": { "$ref": "#/$defs/slot" }
    },
    "reservedRmb": { "type": "number", "minimum": 0 },
    "retryReservedRmb": { "type": "number", "minimum": 0 },
    "status": { "enum": ["reserved", "partially_settled", "settled", "released", "failed"] },
    "settlements": {
      "type": "array", "maxItems": 4,
      "items": { "$ref": "#/$defs/settlement" }
    }
  },
  "additionalProperties": false,
  "$defs": {
    "sha256": { "type": "string", "pattern": "^[0-9a-f]{64}$" },
    "slot": {
      "type": "object",
      "required": [
        "slot", "requestBytes", "inputTokenUpperBound", "maxOutputTokens",
        "reservedRmb", "retryReservedRmb"
      ],
      "properties": {
        "slot": { "enum": ["judge-a", "judge-b"] },
        "requestBytes": { "type": "integer", "minimum": 1 },
        "inputTokenUpperBound": { "type": "integer", "minimum": 1 },
        "maxOutputTokens": { "const": 10000 },
        "reservedRmb": { "type": "number", "minimum": 0 },
        "retryReservedRmb": { "type": "number", "minimum": 0 }
      },
      "additionalProperties": false
    },
    "settlement": {
      "type": "object",
      "required": [
        "slot", "attempt", "providerRequestId", "promptTokens", "completionTokens",
        "contentReceived", "chargedRmb", "releasedRmb"
      ],
      "properties": {
        "slot": { "enum": ["judge-a", "judge-b"] },
        "attempt": { "type": "integer", "minimum": 1, "maximum": 2 },
        "providerRequestId": { "type": ["string", "null"], "minLength": 1 },
        "promptTokens": { "type": "integer", "minimum": 0 },
        "completionTokens": { "type": "integer", "minimum": 0 },
        "contentReceived": { "type": "boolean" },
        "chargedRmb": { "type": "number", "minimum": 0 },
        "releasedRmb": { "type": "number", "minimum": 0 }
      },
      "additionalProperties": false
    }
  }
}