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

namespace GreadyPoang.DataLayer;

public class ParticipantRepository : IRepository<Participant>
{
    private readonly LocalDbService _dbService;
    private ObservableCollection<Participant> lager;

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

    #region Get Method
    public async Task<ObservableCollection<Participant>> Get()
    {
        // This method should return a collection of Participant objects.
        // For now, returning an empty collection.
        List<Participant> result = await _dbService.GetParticipantsAsync();


        if (result != null)
        {
            foreach (var participant in result)
            {
                if (!lager.Any(p => p.ParticipantId == participant.ParticipantId))
                {
                    lager.Add(participant);
                }
            }
        }

        return lager;
    }

    public Participant? Get(int id)
    {
        Participant? participant = null; // Initialize the variable to avoid CS0165
        _dbService.GetParticipantAsync(id).ContinueWith(task =>
        {
            if (task.Exception == null)
            {
                participant = task.Result;
                if (participant != null)
                {
                    System.Diagnostics.Debug.WriteLine($"Fetched Participant by ID: {participant.ParticipantId}, {participant.FirstName}, {participant.LastName}, {participant.Email}");
                }
                else
                {
                    System.Diagnostics.Debug.WriteLine($"No Participant found with ID: {id}");
                }
            }
            else
            {
                // Handle exceptions as needed
                System.Diagnostics.Debug.WriteLine($"Error fetching participant by ID: {task.Exception.Message}");
            }
        }).Wait();

        return participant;
    }
    #endregion

    public bool Save(Participant entity)
    {
        var output = false;
        try
        {
            _dbService.SaveParticipantAsync(entity).Wait();
            lager.Add(entity);
            output = true;
        }
        catch (Exception ex)
        {
            System.Diagnostics.Debug.WriteLine($"Error saving participants: {ex.Message}");
        }

        return output;

    }
}