using Common.Library;
using GreadyPoang.EntityLayer;
using System.Collections.ObjectModel;

namespace GreadyPoang.DataLayer;

public class ParticipantRepository : IRepository<Participant>
{

    private ObservableCollection<Participant> lager;

    public ParticipantRepository()
    {
        if (lager == null || lager.Count == 0)
        {
            lager = new ObservableCollection<Participant>();

            lager.Add(new Participant
            {
                ParticipantId = 1,
                FirstName = @"Kalle",
                LastName = @"Persson",
                Email = @"kalle@person.com",
            });
            lager.Add(new Participant
            {
                ParticipantId = 2,
                FirstName = @"Olle",
                LastName = @"Goop",
                Email = @"olle@goop.com",
            });
            lager.Add(new Participant
            {
                ParticipantId = 3,
                FirstName = @"Nisse",
                LastName = @"Pärlemo",
                Email = @"nisse@parlemo.com"
            });
        }
    }

    #region Get Method
    public ObservableCollection<Participant> Get()
    {
        // This method should return a collection of Participant objects.
        // For now, returning an empty collection.
        return lager;
    }

    public Participant? Get(int id)
    {
        return Get().Where(row => row.ParticipantId == id).FirstOrDefault();
    }
    #endregion

    public bool Save(Participant entity)
    {
        if (entity.ParticipantId == 0)
        {
            // New entity
            var maxId = lager.Max(p => p.ParticipantId);
            entity.ParticipantId = maxId + 1;
            lager.Add(entity);
        }
        else
        {
            // Existing entity
            var existing = Get(entity.ParticipantId);
            if (existing != null)
            {
                existing.FirstName = entity.FirstName;
                existing.LastName = entity.LastName;
                existing.Email = entity.Email;
            }
            else
            {
                return false; // Entity not found
            }
        }

        return true;
    }
}