using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Json;
using Oqtane.Modules;
using Oqtane.Models;
using Oqtane.Infrastructure;
using Oqtane.Interfaces;
using Oqtane.Enums;
using Oqtane.Repository;
using SZUAbsolventenverein.Module.EventRegistration.Repository;
using System.Threading.Tasks;

namespace SZUAbsolventenverein.Module.EventRegistration.Manager
{
    public class EventRegistrationManager : MigratableModuleBase, IInstallable, IPortable, ISearchable
    {
        private readonly IEventRepository _EventRepository;
        private readonly IResponseRepository _ResponseRepository;
        private readonly IDBContextDependencies _DBContextDependencies;

        public EventRegistrationManager(IEventRepository EventRegistrationRepository, IResponseRepository ResponseRepository, IDBContextDependencies DBContextDependencies)
        {
            _EventRepository = EventRegistrationRepository;
            _ResponseRepository = ResponseRepository;
            _DBContextDependencies = DBContextDependencies;
        }

        public bool Install(Tenant tenant, string version)
        {
            return Migrate(new EventRegistrationContext(_DBContextDependencies), tenant, MigrationType.Up);
        }

        public bool Uninstall(Tenant tenant)
        {
            return Migrate(new EventRegistrationContext(_DBContextDependencies), tenant, MigrationType.Down);
        }

        public string ExportModule(Oqtane.Models.Module module)
        {
            // TODO: Export event Responses as well.
            string content = "";
            List<object> exportData = new List<object>();
            foreach (var events in _EventRepository.GetEvents(module.ModuleId))
            {
                var responses = _ResponseRepository.GetResponses(events.EventId, module.ModuleId);
                exportData.Add(new
                {
                    Event = events,
                    Responses = responses.ToList()
                });
            };
            if (exportData != null)
            {
                content = JsonSerializer.Serialize(exportData);
            }
            return content;
        }

        public void ImportModule(Oqtane.Models.Module module, string content, string version)
        {
            // TODO: Import event Responses as well.
            List<Models.Event> EventRegistrations = null;
            if (!string.IsNullOrEmpty(content))
            {
                EventRegistrations = JsonSerializer.Deserialize<List<Models.Event>>(content);
            }
            if (EventRegistrations != null)
            {
                foreach(var EventRegistration in EventRegistrations)
                {
                    _EventRepository.AddEvent(new Models.Event { ModuleId = module.ModuleId, Name = EventRegistration.Name });
                }
            }
        }

        public Task<List<SearchContent>> GetSearchContentsAsync(PageModule pageModule, DateTime lastIndexedOn)
        {
           var searchContentList = new List<SearchContent>();

           foreach (var EventRegistration in _EventRepository.GetEvents(pageModule.ModuleId))
           {
               if (EventRegistration.ModifiedOn >= lastIndexedOn)
               {
                   searchContentList.Add(new SearchContent
                   {
                       EntityName = "SZUAbsolventenvereinEventRegistration",
                       EntityId = EventRegistration.EventId.ToString(),
                       Title = EventRegistration.Name,
                       Body = EventRegistration.Name,
                       ContentModifiedBy = EventRegistration.ModifiedBy,
                       ContentModifiedOn = EventRegistration.ModifiedOn
                   });
               }
           }

           return Task.FromResult(searchContentList);
        }
    }
}