{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Gameplay event catalog declarations (trusted publisher capabilities are supplied by the engine)",
  "type": "object",
  "additionalProperties": false,
  "required": ["schemaVersion", "kinds", "reasons"],
  "properties": {
    "schemaVersion": { "const": 1 },
    "kinds": { "type": "array", "maxItems": 1024, "items": { "$ref": "#/$defs/kind" } },
    "reasons": { "type": "array", "maxItems": 4096, "items": { "$ref": "#/$defs/reason" } },
    "kindAliases": { "type": "array", "maxItems": 64, "items": { "$ref": "#/$defs/alias" } },
    "reasonAliases": { "type": "array", "maxItems": 64, "items": { "$ref": "#/$defs/alias" } }
  },
  "$defs": {
    "identifier": {
      "type": "string", "maxLength": 256,
      "pattern": "^[a-z][a-z0-9_-]*(\\.[a-z][a-z0-9_-]*){0,15}$"
    },
    "kind": {
      "type": "object", "additionalProperties": false,
      "required": ["kind", "schemaVersion", "publisherId", "payload", "canOpenResponseWindow"],
      "properties": {
        "kind": { "$ref": "#/$defs/identifier" },
        "schemaVersion": { "const": 1 },
        "publisherId": { "$ref": "#/$defs/identifier" },
        "payload": { "enum": ["ResourceChange", "AttributeChange", "StatusChange", "CardMovement", "Action", "Boundary", "RuleResult", "ZoneOrder", "ModifierChange", "ResourceThreshold", "ActorDefeatChange", "SequenceChange", "InstanceDuration", "ResourceTransport", "ContentRevision", "ResourceRebind", "ResourceRestriction"] },
        "canOpenResponseWindow": { "type": "boolean" }
      }
    },
    "reason": {
      "type": "object", "additionalProperties": false, "required": ["reasonId"],
      "properties": {
        "reasonId": { "$ref": "#/$defs/identifier" },
        "messageKey": { "type": ["string", "null"], "minLength": 1, "maxLength": 512 },
        "tags": { "type": "array", "uniqueItems": true, "maxItems": 64, "items": { "type": "string", "minLength": 1, "maxLength": 512 } }
      }
    },
    "alias": {
      "type": "object", "additionalProperties": false, "required": ["from", "to"],
      "properties": { "from": { "$ref": "#/$defs/identifier" }, "to": { "$ref": "#/$defs/identifier" } }
    }
  }
}