using System.Text.RegularExpressions;

namespace RhSolutions.Parsers.Fittings;

public abstract class Adapter : DrinkingWaterHeatingFitting
{
	protected Dictionary<string, string> _defaultThreads = new()
	{
		["16"] = "1/2",
		["20"] = "1/2",
		["25"] = "3/4",
		["32"] = "1",
		["40"] = "1 1/4",
		["50"] = "1 1/2",
		["63"] = "2"
	};
	public override bool TryParse(string input, out string output)
	{
		output = string.Empty;
		MatchCollection diameters = _diameter.Matches(input);
		if (diameters.Count < 1)
		{
			return false;
		}
		Match thread = _thread.Match(input);
		string threadValue;
		if (!thread.Success && diameters.Count >= 2)
		{
			var diameterThread = diameters[1].Groups["Diameter"];
			threadValue = diameterThread.Value switch
			{
				"15" => "1/2",
				"20" => "3/4",
				"25" => "1",
				_ => string.Empty
			};
		}
		else if (!thread.Success)
		{
			threadValue = _defaultThreads[diameters[0].Groups["Diameter"].Value];
		}
		else
		{
			threadValue = thread.Groups["Thread"].Value;
		}
		output = $"{_title} {diameters[0].Groups["Diameter"]} {threadValue}";
		return true;
	}
}