using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

public static class ClipboardFusionHelper
{
    public static string ProcessText(string text)
    {
        int indentSize = 1; //Use negative or positve values
        char indentChar = '\t'; //Tab character

		Dictionary<string, int> options = new Dictionary<string, int>
		{						
			{"Add 1 tab", 1},	
			{"Add 2 tabs", 2},
			{"Add 3 tabs", 3},			
			{"Remove 1 tab", -1},
			{"Remove 2 tabs", -2},
			{"Remove 3 tabs", -3},			
		};
		
		string selection = BFS.Dialog.GetUserInputList(
			"How much would you like to indent or unindent the text?",
			options.Keys.ToArray());
		
		if(string.IsNullOrEmpty(selection))
			return text;
		
		if(!options.TryGetValue(selection, out indentSize))
			return text;
		
        if (indentSize > 0)
            text = Regex.Replace(text, @"^", new string(indentChar, indentSize), RegexOptions.Multiline);
        else if (indentSize < 0)
            text = Regex.Replace(text, @"^" + new string(indentChar, Math.Abs(indentSize)), "", RegexOptions.Multiline);

        return text;
    }
}