using BeWo.Data.Access;
using BeWo.Data.Entities;
using BeWo.Service.Attributes;
using BeWo.Service.Core;
using BeWo.Service.ServiceContracts.Enhanced;
using BS.Shared.DataContracts;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
using System.Threading.Tasks;

namespace BeWo.Service.ServiceImplementations.Enhanced
{
	[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall,
					 ConcurrencyMode = ConcurrencyMode.Single)]
	public class StatusServiceImp : IStatusService
	{
		public ServerStatusDC GetStatus()
		{
			var result = new ServerStatusDC
			{
				ServerTime = DateTime.Now.ToString("o"),
				Version = Assembly.GetExecutingAssembly()
								  .GetName().Version?.ToString() ?? "unbekannt",
				Services = new List<ServiceStatusDC>()
			};

			// Datenbankverbindung prüfen
			result.DatabaseOk = CheckDatabase();

			// Einzelne Subsysteme prüfen
			result.Services.Add(CheckService("Database", result.DatabaseOk));
			//result.Services.Add(CheckService("Mail", CheckMail()));
			result.Services.Add(CheckService("AIModule", CheckAiModule()));

			return result;
		}

		private bool CheckDatabase()
		{
			try
			{
				// Leichter DB-Ping – z.B. eine einfache Abfrage über DAOFactory
				DAOFactory.GenericDAO.GetAll<ApplicationUser>();
				return true;
			}
			catch
			{
				return false;
			}
		}

		private bool CheckMail()
		{
			try
			{
				// z.B. SMTP-Verbindung kurz aufbauen und sofort schließen
				// Kann auch weggelassen / später ergänzt werden
				return true;
			}
			catch
			{
				return false;
			}
		}

		private bool CheckAiModule()
		{
			try
			{
				// #1
				var configPath = ConfigReader.GetConfigPath(SpecialConfig.CustomPreSystemPrompt);
				if (!File.Exists(configPath))
					return false;

				return true;
			}
			catch
			{
				return false;
			}
		}

		private ServiceStatusDC CheckService(string name, bool ok)
		{
			return new ServiceStatusDC
			{
				Name = name,
				IsOk = ok,
				Message = ok ? "OK" : "Fehler"
			};
		}
	}
}