using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Net.NetworkInformation;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using static System.Runtime.InteropServices.JavaScript.JSType;
using EventVisitorLogic.BindingModels;
using EventVisitorLogic.ViewModels;

namespace EventVisitorDatabase.Entities
{
    public class OrganizerEntity
    {
        public int Id { get; set; }
        public string Surname { get; set; } = string.Empty;
        public string Name { get; set; } = string.Empty;
        public string LastName { get; set; } = string.Empty;
        public string OrganizationName { get; set; } = string.Empty;
        public string Role { get; set; } = string.Empty;
        public string Phone { get; set; } = string.Empty;

        [ForeignKey("OrganizerId")]
        public virtual List<OrganizerEvent> Events { get; set; } = new();

        private Dictionary<int, EventEntity>? _eventOrginizers = null;
        [NotMapped]
        public Dictionary<int, EventEntity> OrganizerEvent
        {
            get
            {
                if (_eventOrginizers == null)
                {
                    _eventOrginizers = Events
                        .ToDictionary(rec => rec.EventId, rec => (rec.Event as EventEntity));
                }
                return _eventOrginizers;
            }
        }

        public static OrganizerEntity? Create(OrganizerBindingModel model)
        {
            if (model == null)
            {
                return null;
            }
            return new OrganizerEntity()
            {
                Id = (int)(model?.Id),
                Name = model.Name,
                Phone = model.Phone,
                Role = model.Role,
                Surname = model.Surname,
                LastName = model.LastName,
                OrganizationName = model.OrganizationName
            };
        }

        public static OrganizerEntity Create(OrganizerViewModel model)
        {
            return new OrganizerEntity()
            {
                Id = model.Id,
                Name = model.Name,
                Phone = model.Phone,
                Role = model.Role,
                Surname = model.Surname,
                LastName = model.LastName,
                OrganizationName = model.OrganizationName
            };
        }

        public void UpdateEvents(EventVisitorDbContext context, OrganizerBindingModel model)
        {
            var organizer = context.Organizers.First(x => x.Id == Id);
            foreach (var fs in model.OrganizerEvent)
            {
                context.OrganizerEvent.Add(new OrganizerEvent
                {
                    Organizer = organizer,
                    Event = context.Events.First(x => x.Id == fs.Value.Id)
                });
                context.SaveChanges();
            }
            _eventOrginizers = null;
        }

        public void Update(OrganizerBindingModel model)
        {
            Name = model.Name;
            Phone = model.Phone;
            Role = model.Role;
            Surname = model.Surname;
            LastName = model.LastName;
            OrganizationName = model.OrganizationName;
        }

        public OrganizerViewModel GetViewModel => new()
        {
            Id = Id,
            Name = Name,
            Phone = Phone,
            Role = Role,
            Surname = Surname,
            LastName = LastName,
            OrganizationName = OrganizationName
        };
    }
}