using Connected.Expressions;
using Connected.Expressions.Languages;
using Connected.Expressions.Translation;
using Connected.Expressions.Translation.Rewriters;
using System.Linq.Expressions;

namespace Connected.Data.Sql;

internal sealed class TSqlLinguist : Linguist
{

    public TSqlLinguist(ExpressionCompilationContext context, TSqlLanguage language, Translator translator)
        : base(context, language, translator)
    {
    }

    public override Expression Translate(Expression expression)
    {
        /*
		 * fix up any order-by's
		 */
        expression = OrderByRewriter.Rewrite(Language, expression);

        expression = base.Translate(expression);
        /*
		 * convert skip/take info into RowNumber pattern
		 */
        expression = SkipToRowNumberRewriter.Rewrite(Language, expression);
        /*
		 * fix up any order-by's we may have changed
		 */
        expression = OrderByRewriter.Rewrite(Language, expression);

        return expression;
    }

    public override string Format(Expression expression)
    {
        return TSqlFormatter.Format(Context, expression, Language);
    }
}