{
    "bsonType": "object",
    "required": ["content", "author_id", "article_id", "create_time"],
    "permission": {
        "read": "true",
        "create": "auth.uid != null", // 登录用户可创建
        "update": "doc.author_id == auth.uid || 'admin' in auth.role", // 仅作者可修改
        "delete": "doc.author_id == auth.uid || 'admin' in auth.role" // 作者或管理员可删除
    },
    "properties": {
        "_id": {
            "description": "ID，系统自动生成",
            "bsonType": "string"
        },
        "content": {
            "bsonType": "string",
            "title": "评论内容",
            "minLength": 1,
            "maxLength": 500,
            "errorMessage": "评论内容不能为空且不超过500字"
        },
        "root_id": {
            "bsonType": "string",
            "description": "根评论ID（0表示自身是根评论）",
            "defaultValue": "0",
			"foreignKey": "comment._id"
        },
        "author_id": {
            "bsonType": "string",
            "description": "作者ID（关联uni-id-users表）",
            "foreignKey": "uni-id-users._id"
        },
		"parent_author_id": {
		    "bsonType": "string",
		    "description": "回复者id（关联uni-id-users表）",
		    "foreignKey": "uni-id-users._id"
		},
		"parent_author_content": {
            "bsonType": "string",
            "title": "评论内容",
            "minLength": 1,
            "maxLength": 500,
			"defaultValue":"",
            "errorMessage": "评论内容不能为空且不超过500字"
		},
        "parent_id": {
            "bsonType": "string",
            "description": "父评论ID（0表示无父评论）",
            "defaultValue": "0",
			"foreignKey": "comment._id"
        },
        "article_id": {
            "bsonType": "string",
            "description": "关联文章ID",
            "foreignKey": "uni-cms-articles._id"
        },
        "like_count": {
            "bsonType": "int",
            "description": "点赞数",
            "minimum": 0,
            "defaultValue": 0
        },
        "create_time": {
            "bsonType": "timestamp",
            "description": "创建时间",
            "defaultValue": {
                "$env": "now"
            }
        },
        "update_time": {
            "bsonType": "timestamp",
            "description": "更新时间",
            "defaultValue": {
                "$env": "now"
            }
        },
        "ip_location": {
            "bsonType": "object",
            "description": "IP信息",
            "properties": {
                "clientIP": {
                    "bsonType": "string",
                    "description": "客户端IP地址"
                }
            }
        },
        "reply_count": {
            "bsonType": "int",
            "description": "回复数",
            "minimum": 0,
            "defaultValue": 0
        }
    }
}