using Microsoft.AspNetCore.Mvc;
using GrossesMitainesAPI.Models;
using System.Linq;
using GrossesMitainesAPI.Data;
using Microsoft.Extensions.Logging;

namespace GrossesMitainesAPI.Controllers;

[ApiController, Route("api/[controller]")]
public class InventoryController : Controller {
    private readonly ILogger<InventoryController> _logger;
    private readonly InventoryContext _context;

    public InventoryController(ILogger<InventoryController> logger, InventoryContext context) {
        _context = context;
        _logger = logger;
    }

    [HttpGet(Name ="Inventory")] // Pour faire des calls async par paquet de 5 (pour du loading en scrollant)
    public IEnumerable<Product> Get(int? lastId) {
        if (!lastId.HasValue)
            lastId = 1;
        return _context.Products.Where(x => x.Id >= lastId && x.Id < lastId + 5).ToList();
    }

    [HttpDelete(Name = "Inventory")]
    public void Delete(int? id) {
        if (!id.HasValue) {
            _logger.LogError(8, "Delete sans Id.");
            return;
        }

        try {
            Product prod = _context.Products.First(x => x.Id == id);
            if (prod.Quantity > 0)
                prod.Quantity--;
            else {
                _logger.LogError(8, "Delete de produit en backorder.");
                return;
            }
            _context.Products.Update(prod);
        } catch (Exception e) {
            _logger.LogError(8, e.Message);
        }
    }
}