using Hospitality.Backend.DTOs;
using Hospitality.Infrastructure.Data;
using Microsoft.EntityFrameworkCore;

namespace Hospitality.Backend.Services;

public class QrCodeService : IQrCodeService
{
    private readonly HospitalityDbContext _context;

    public QrCodeService(HospitalityDbContext context)
    {
        _context = context;
    }

    public async Task<PersonDetailResponse?> GetPersonByQrCodeAsync(Guid qrCode)
    {
        var person = await _context.People
            .Include(p => p.Quotas)
            .ThenInclude(q => q.Product)
            .FirstOrDefaultAsync(p => p.QrCode == qrCode);

        if (person == null) return null;

        return new PersonDetailResponse(
            person.Id,
            person.GroupId,
            person.QrCode,
            person.Name,
            person.Email,
            person.PhoneNumber,
            person.Quotas.Select(q => new QuotaResponse(
                q.ProductId,
                q.Product.Name,
                q.Product.Type.ToString(),
                q.InitialAmount,
                q.UsedAmount,
                q.RemainingAmount
            )).ToList()
        );
    }

    public async Task<IEnumerable<QuotaResponse>> GetQuotasByQrCodeAsync(Guid qrCode)
    {
        var quotas = await _context.PersonQuotas
            .Include(q => q.Product)
            .Include(q => q.Person)
            .Where(q => q.Person.QrCode == qrCode)
            .Select(q => new QuotaResponse(
                q.ProductId,
                q.Product.Name,
                q.Product.Type.ToString(),
                q.InitialAmount,
                q.UsedAmount,
                q.RemainingAmount
            ))
            .ToListAsync();

        return quotas;
    }
}