using BS.Shared.Exceptions;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BeWo.Service.Core
{
	public static class ConfigReader
	{
		public static List<string> GetIPAddressList(IPAddressList iPAddressList)
		{
			if(iPAddressList == IPAddressList.None)
				throw new ArgumentException(nameof(iPAddressList));

			var lSubPath = getIPAddressListName(iPAddressList);

			var lConfigPath = getConfigPath(lSubPath);

			var lines = File.ReadAllLines(lConfigPath);

			return lines.ToList();
		}

		public static string GetConfigPath(SpecialConfig specialConfig)
		{
			if (specialConfig == SpecialConfig.None)
				throw new ArgumentException(nameof(specialConfig));

			var lSubPath = getSpecialConfigName(specialConfig);

			var lConfigPath = getConfigPath(lSubPath);

			return lConfigPath;
		}

		private static string getConfigPath(string subpath)
		{
			var root = AppDomain.CurrentDomain.BaseDirectory;

			var path = Path.Combine(root, "Config", subpath);

			return path;
		}

		private static string getSpecialConfigName(SpecialConfig config)
		{
			switch (config)	
			{
				case SpecialConfig.None:
					break;
				case SpecialConfig.AiConfig:
					return "ai.config.json";
				default:
					break;
			}

			throw BeWoNotImplementedException.CreateFromEnum(config);
		}

		private static string getIPAddressListName(IPAddressList list)
		{
			switch (list)
			{
				case IPAddressList.None:
					break;
				case IPAddressList.AdminApi:
					return "allowed_ips_admin_api.txt";
			}

			throw BeWoNotImplementedException.CreateFromEnum(list);
		}
	}
}