using BeWo.Service.ServiceContracts.Enhanced;
using BeWo.Service.Status;
using BS.Shared;
using BS.Shared.DataContracts;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Reflection;
using System.ServiceModel;
using System.ServiceModel.Web;

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"),
				AssemblyVersion = Assembly.GetExecutingAssembly()
								  .GetName().Version?.ToString() ?? "unbekannt",
				ServerVersion = BeWoAppInfo.BeWoAppVersion.ToString(),
				Services = new List<ServiceStatusDC>()
			};

			// Datenbankverbindung prüfen
			result.DatabaseOk = new DatenbankStatusService().DoHealthCheckup();

			// Einzelne Subsysteme prüfen
			var statusServices = new List<BaseStatusService>
			{
				new GeneralStatusService(),
				new AiStatusService()
			};

			foreach (var service in statusServices)
				result.Services.Add(service.DoHealthCheckup());

			var allHealthy = result.DatabaseOk.IsOk && result.Services.All(x => x.IsOk);
			if (!allHealthy)
			{
				WebOperationContext.Current.OutgoingResponse.StatusCode =
					HttpStatusCode.InternalServerError;
			}

			return result;
		}
	}
}