using System;
using System.Linq;
using Nancy;
using Nancy.Security;
using Sony.Filtr.Contracts.Abstractions;
using Sony.Filtr.Contracts.Entities;
using Sony.Filtr.Utility.Logging;

namespace Sony.Filtr.AdminAPI.Modules
{
    public class BaseModule : NancyModule
    {
        public BaseModule(IApplicationInstanceManager applicationInstanceManager, ILogger logger = null)
        {
            Logger = logger ?? new NullLogger();

            this.RequiresAuthentication();

            Before.AddItemToEndOfPipeline(delegate(NancyContext context)
            {
                string countryCode = (string)context.Parameters.countryCode;
                if (string.IsNullOrWhiteSpace(countryCode))
                    return null;

                var apps = applicationInstanceManager.GetApplications(); 

                Application app;
                if (countryCode.Equals("global", StringComparison.InvariantCultureIgnoreCase))
                {
                    app = applicationInstanceManager.GetGlobalPushApplication();
                }
                else if (countryCode.Equals("other", StringComparison.InvariantCultureIgnoreCase))
                {
                    app = applicationInstanceManager.GetFallbackApplication();
                }
                else
                {                
                    
                    app = apps.FirstOrDefault(a=> a.SpotifyRegionCode.Equals(countryCode, StringComparison.InvariantCultureIgnoreCase));
                }

                if (app == null)
                {
                    int applicationId;
                    if (int.TryParse(countryCode, out applicationId))
                    {
                        app = apps.FirstOrDefault(a => a.ID == applicationId);
                    }
                }

                _currentApplication = app;
                return null;
            });
        }

        private Application _currentApplication;
        protected Application CurrentApplication
        {
            get { return _currentApplication; }
        }

        public ILogger Logger { get; }

        protected string ExtractRequestData(Nancy.Request request)
        {
            string data = "Not presented";

            if (request != null)
            {
                data = $"{request.Method} {request.Url} {request.ProtocolVersion}";
            }

            return data;
        }
    }
}