{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://guanghulab.com/hldp/schema/broadcast.schema.json",
  "title": "HLDP Broadcast Schema · 广播数据格式",
  "description": "定义系统广播的 payload 结构",
  "protocol": "HLDP",
  "version": "1.0",
  "parent_language": "TCS Language Core",
  "copyright": "国作登字-2026-A-00037559",
  "designer": "TCS-0002∞ 冰朔",
  "allOf": [
    { "$ref": "hldp-core.schema.json" }
  ],
  "properties": {
    "data_type": { "const": "broadcast" },
    "payload": {
      "type": "object",
      "required": ["broadcast_id", "title", "broadcast_type"],
      "properties": {
        "broadcast_id": {
          "type": "string",
          "description": "广播编号"
        },
        "title": {
          "type": "string",
          "description": "广播标题"
        },
        "broadcast_type": {
          "type": "string",
          "enum": ["task", "announcement", "alert", "syslog", "milestone"],
          "description": "广播类型"
        },
        "target_dev": {
          "type": "string",
          "description": "目标开发者编号"
        },
        "target_persona": {
          "type": "string",
          "description": "目标人格体编号"
        },
        "module": {
          "type": "string",
          "description": "相关模块"
        },
        "content": {
          "type": "string",
          "description": "广播内容（Markdown 格式）"
        },
        "status": {
          "type": "string",
          "enum": ["pending", "delivered", "acknowledged", "completed", "expired"],
          "description": "广播状态"
        },
        "issued_at": {
          "type": "string",
          "format": "date-time",
          "description": "发布时间"
        },
        "deadline": {
          "type": ["string", "null"],
          "format": "date-time",
          "description": "截止时间"
        }
      }
    }
  }
}