using System.Text.RegularExpressions;
using CodePlay.Core.Interfaces;
using CodePlay.Core.Models;

namespace CodePlay.Core.Pipeline.Converters;

/// <summary>
/// Range 和 Index 操作符转换器
/// </summary>
public class RangeIndexConverter : ILineConverter
{
    public int Priority => 100;
    
    public string Convert(string line, ConversionContext context)
    {
        var result = line;
        
        result = Regex.Replace(result, 
            @"(\w+)\s*\[\s*(\d+)\s*\.\.\s*(\d+)\s*\]", 
            "$1.substring($2, $3)");
        
        result = Regex.Replace(result,
            @"(\w+)\s*\[\s*\^\s*(\d+)\s*\]",
            "$1.charAt($1.length() - $2)");
        
        result = Regex.Replace(result,
            @"(\w+)\s*\[\s*\.\.\s*\]",
            "$1");
        
        return result;
    }
}