{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:akari-video:schema:word-book:v0",
  "title": "AKARI Video word book v0",
  "type": "object",
  "additionalProperties": false,
  "required": ["version", "entries"],
  "properties": {
    "version": { "const": 0 },
    "entries": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": true,
        "required": ["surface", "kind"],
        "properties": {
          "surface": { "type": "string", "minLength": 1, "pattern": "\\S" },
          "variants": {
            "type": "array",
            "uniqueItems": true,
            "items": { "type": "string", "minLength": 1, "pattern": "\\S" }
          },
          "reading": { "type": "string", "pattern": "^[ぁ-ゖァ-ヺー]+$" },
          "kind": { "enum": ["term", "notation", "ng", "reading-only"] },
          "protect_break": { "type": "boolean" },
          "source": { "type": "string" },
          "added_at": { "type": "string", "format": "date-time" },
          "hits": { "type": "integer", "minimum": 0 }
        }
      }
    }
  }
}