// comment.schema.json
{
    "bsonType": "object",
    "required": ["content", "user_id"],
    "permission": {
        "read": "doc.status == 'published' || auth.uid == doc.user_id",
        "create": "auth.uid != null",
        "update": "auth.uid == doc.user_id || 'admin' in auth.role",
        "delete": "auth.uid == doc.user_id || 'admin' in auth.role"
    },
    "properties": {
        "_id": {
            "description": "评论ID，系统自动生成",
            "foreignKey": "opendb-comment._id"
        },
        "parent_id": {
            "bsonType": "string",
            "title": "父评论ID",
            "description": "用于嵌套评论",
            "foreignKey": "opendb-comment._id",
            "defaultValue": ""
        },
        "user_id": {
            "bsonType": "string",
            "title": "用户ID",
            "description": "关联uni-id-users表",
            "forceDefaultValue": {
                "env": "uid"
            },
            "foreignKey": "uni-id-users._id"
        },
        "content": {
            "bsonType": "string",
            "title": "评论内容",
            "minLength": 1,
            "maxLength": 500,
            "trim": "both"
        },
        "like_count": {
            "bsonType": "int",
            "title": "点赞数",
            "minimum": 0,
            "defaultValue": 0
        },
        "create_time": {
            "bsonType": "timestamp",
            "title": "创建时间",
            "defaultValue": {
                "env": "now"
            }
        },
        "update_time": {
            "bsonType": "timestamp",
            "title": "更新时间",
            "defaultValue": {
                "env": "now"
            }
        },
        "status": {
            "bsonType": "string",
            "title": "状态",
            "enum": [
                {"value": "draft", "text": "草稿"},
                {"value": "published", "text": "已发布"},
                {"value": "deleted", "text": "已删除"}
            ],
            "defaultValue": "published"
        }
    },
    "indexes": [
        {
            "name": "parent_id_index",
            "fields": [{ "field": "parent_id", "order": "asc" }]
        },
        {
            "name": "user_index",
            "fields": [{ "field": "user_id", "order": "asc" }]
        }
    ]
}