using System.Text.RegularExpressions;

namespace RhSolutions.Services;

public class SleevesCalculator : IFittingsCalculator
{
	private const string doublePattern =
		@"((?i)равнопроходная|угольник\s+90|угольник\s+45|Т-образная|Комплект\s+трубок(?i))(.+?\b(?<Sleeve>16|20|25|32|40|50|63)\b)+";
	private const string singlePattern =
		@"((?i)муфта|тройник|переходник|угольник|штуцер|Г-образная|заглушка(?i))(.+?\b(?<Sleeve>16|20|25|32|40|50|63)\b)+";

	public Dictionary<Product, double> Calculate(Dictionary<Product, double> products)
	{
		Dictionary<string, double> result = new()
		{
			["16"] = 0,
			["20"] = 0,
			["25"] = 0,
			["32"] = 0,
			["40"] = 0,
			["50"] = 0,
			["63"] = 0,
			["16PX"] = 0,
			["20PX"] = 0,
			["25PX"] = 0,
			["32PX"] = 0,
			["40PX"] = 0
		};
		var rautitanProducts = products.Where(kvp => kvp.Key.ProductLines.Contains("RAUTITAN"));

		foreach (var kvp in rautitanProducts)
		{
			var doubleCollection = Regex.Matches(kvp.Key.Name, doublePattern);
			if (doubleCollection.Count != 0)
			{
				CaptureCollection collection = doubleCollection[0].Groups["Sleeve"].Captures;
				foreach (Capture sleeve in collection)
				{
					if (kvp.Key.Name.Contains("PX"))
					{
						result[$"{sleeve.Value}PX"] += kvp.Value * 2;
					}
					else
					{
						result[sleeve.Value] += kvp.Value * 2;
					}
				}
				continue;
			}
			var singleCollection = Regex.Matches(kvp.Key.Name, singlePattern);
			if (singleCollection.Count != 0)
			{
				CaptureCollection collection = singleCollection[0].Groups["Sleeve"].Captures;
				foreach (Capture sleeve in collection)
				{
					if (kvp.Key.Name.Contains("PX"))
					{
						result[$"{sleeve.Value}PX"] += kvp.Value;
					}
					else
					{
						result[sleeve.Value] += kvp.Value;
					}
				}
			}
		}

		return result
			.ToDictionary(kvp =>
		kvp.Key switch
		{
			"16" => new Product("11080011001"),
			"20" => new Product("11080021001"),
			"25" => new Product("11080031001"),
			"32" => new Product("11080041001"),
			"40" => new Product("11080051001"),
			"50" => new Product("11397713002"),
			"63" => new Product("11397813002"),
			"16PX" => new Product("11600011001"),
			"20PX" => new Product("11600021001"),
			"25PX" => new Product("11600031001"),
			"32PX" => new Product("11600041001"),
			"40PX" => new Product("11600051001"),
			_ => throw new Exception($"Неизвестный диаметр {kvp.Key}")
		}, kvp => kvp.Value);
	}
}