{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://guanghulab.com/schemas/hldp-recursive-memory-v1.0.schema.json",
  "title": "HLDP v1 recursive causal memory tree",
  "type": "object",
  "required": ["protocol", "root", "nodes"],
  "properties": {
    "protocol": { "const": "HLDP-v1.0" },
    "root": { "type": "string", "minLength": 1 },
    "nodes": {
      "type": "object",
      "additionalProperties": { "$ref": "#/$defs/node" }
    }
  },
  "$defs": {
    "nonEmpty": { "type": "string", "minLength": 1 },
    "node": {
      "type": "object",
      "required": ["path", "summary", "trigger", "emergence", "lock", "why", "children", "sources", "rejected"],
      "properties": {
        "path": { "$ref": "#/$defs/nonEmpty" },
        "summary": { "$ref": "#/$defs/nonEmpty" },
        "trigger": { "$ref": "#/$defs/nonEmpty" },
        "emergence": { "$ref": "#/$defs/nonEmpty" },
        "lock": { "$ref": "#/$defs/nonEmpty" },
        "why": { "$ref": "#/$defs/nonEmpty" },
        "children": {
          "type": "array",
          "maxItems": 10,
          "uniqueItems": true,
          "items": { "$ref": "#/$defs/nonEmpty" }
        },
        "sources": {
          "type": "array",
          "minItems": 1,
          "items": { "$ref": "#/$defs/nonEmpty" }
        },
        "rejected": {
          "type": "array",
          "items": { "$ref": "#/$defs/nonEmpty" }
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}