using API.DTO.Supplier.Request;
using API.DTO.Supplier.Response;
using FastEndpoints;
using Microsoft.EntityFrameworkCore;
using PyroFetes.Models;

namespace PyroFetes.Endpoints.Supplier;

public class UpdateSupplierEndpoint(PyroFetesDbContext pyrofetesdbcontext) : Endpoint<UpdateSupplierDto, GetSupplierDto>
{
    public override void Configure()
    {
        Put("/api/suppliers/{@id}", x => new { x.Id });
        AllowAnonymous();
    }

    public override async Task HandleAsync(UpdateSupplierDto req, CancellationToken ct)
    {
        var supplierToEdit = await pyrofetesdbcontext
            .Suppliers
            .Include(s => s.Prices)
            .SingleOrDefaultAsync(s => s.Id == req.Id, ct);

        if (supplierToEdit is null)
        {
            await Send.NotFoundAsync(ct);
            return;
        }
        supplierToEdit.Name = req.Name;
        supplierToEdit.Email = req.Email;
        supplierToEdit.Phone = req.PhoneNumber;
        supplierToEdit.Address = req.Adress;
        supplierToEdit.ZipCode = req.ZipCode;
        supplierToEdit.City = req.City;

        if (req.Products is not null)
        {
            // Supprimer les anciennes liaisons
            var existingPrices = pyrofetesdbcontext.Prices
                .Where(p => p.SupplierId == supplierToEdit.Id);
            pyrofetesdbcontext.Prices.RemoveRange(existingPrices);

            // Ajouter les nouvelles liaisons
            foreach (var p in req.Products)
            {
                pyrofetesdbcontext.Prices.Add(new Price
                {
                    SupplierId = supplierToEdit.Id,
                    ProductId = p.ProductId,
                    SellingPrice = p.SellingPrice
                });
            }
        }

        await pyrofetesdbcontext.SaveChangesAsync(ct);

        var response = new GetSupplierDto
        {
            Id = supplierToEdit.Id,
            Name = supplierToEdit.Name,
            Email = supplierToEdit.Email,
            PhoneNumber = supplierToEdit.Phone,
            Adress = supplierToEdit.Address,
            ZipCode = supplierToEdit.ZipCode,
            City = supplierToEdit.City
        };

        await Send.OkAsync(response, ct);
    }
}