using Microsoft.SqlServer.TransactSql.ScriptDom;
using SQLLinter.Common;
using SQLLinter.Common.Helpers;

namespace SQLLinter.Infrastructure.Rules;

public class DataCompressionOptionRule : BaseRuleVisitor
{

    public override string Text => "Объявление таблицы без использования сжатия данных: {0}";

    public override void Visit(CreateTableStatement node)
    {
        if (node.SchemaObjectName.BaseIdentifier.Value.StartsWith("#")) return;

        var childCompressionVisitor = new ChildCompressionVisitor();
        node.AcceptChildren(childCompressionVisitor);

        if (!childCompressionVisitor.CompressionOptionExists)
        {
            AddViolation(node, SQLHelpers.ObjectGetFullName(node.SchemaObjectName));
        }
    }

    private class ChildCompressionVisitor : TSqlFragmentVisitor
    {
        public bool CompressionOptionExists
        {
            get;
            private set;
        }

        public override void Visit(DataCompressionOption node)
        {
            CompressionOptionExists = true;
        }
    }
}