using AutoMapper;
using FaKrosnoEfDataModel.Dtos;
using FaKrosnoEfDataModel.Entities;
using Microsoft.EntityFrameworkCore;

namespace FaKrosnoEfDataModel.Services;

public class ProductService(FaKrosnoDbContext context, IMapper mapper)
    : ServiceBase<ProductDto>(context, mapper), IProductService
{
    public async Task<IEnumerable<ProductDto?>> GetEntities()
    {
        IList<ProductDto> products = (await GetAll()).ToList();

        return products;
    }

    public async Task<IEnumerable<ProductDto?>> GetEntitiesToFix(string indexName)
    {
        IList<RecipientDto> recipients =
            (await Context.Recipients.ToListAsync()).Select(x => Mapper.Map<RecipientDto>(x)).ToList();
        IList<PurchaserDto> purchasers = (await Context.Purchasers.ToListAsync()).Select(x => Mapper.Map<PurchaserDto>(x)).ToList();
        IList<ProductDto> products = (await GetAll()).ToList();

        IEnumerable<ProductDto> productDtos = products.Where(x => x.FaIdx == indexName).ToList();

        foreach (ProductDto productDto in productDtos)
        {
            RecipientDto? recipient = recipients.FirstOrDefault(x => x.ID == productDto.RecipientID);
            
            if (recipient != null)
            {
                productDto.Recipient = recipient;
                productDto.RecipientName = recipient.RecipientDesc;
            }
            
            PurchaserDto? purchaser = purchasers.FirstOrDefault(x => x.ID == productDto.Recipient.PurchaserID);

            if (purchaser != null)
            {
                productDto.Recipient.Purchaser = purchaser;
            }
        }

        return productDtos;
    }
    
    public async Task UpdateEntity(ProductDto entity)
    {
        Product? product = await Context.Products.FirstOrDefaultAsync(x => x.ID == entity.ID);

        if (product != null)
        {
            product.FaIdx = entity.FaIdx;
            Context.Products.Update(product);
            await Context.SaveChangesAsync();
        }
    }
}