{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:akari-video:schema:script:v0",
  "title": "AKARI Video script lines v0",
  "type": "object",
  "additionalProperties": false,
  "required": ["version", "kind", "lines"],
  "properties": {
    "version": { "const": 0 },
    "kind": { "const": "akari-script" },
    "lines": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["id", "kind", "at", "text"],
        "properties": {
          "id": { "type": "string", "minLength": 1 },
          "kind": { "enum": ["plan", "memo"] },
          "at": { "type": "number", "minimum": 0 },
          "text": { "type": "string", "minLength": 1, "maxLength": 500 },
          "duration": { "type": "number", "exclusiveMinimum": 0 },
          "placeholder": { "type": "string" },
          "beat": { "type": "string" },
          "done": { "type": "boolean" },
          "author": { "enum": ["user", "ai", "playbook"] }
        }
      }
    }
  }
}