using EonaCat.DoxaApi.Attributes;
using Microsoft.AspNetCore.Mvc;
using SampleApi.Models;

namespace SampleApi.Controllers
{
    [ApiController]
    [Route("api/orders")]
    [DoxaApiGroup("Orders")]
    public class OrdersController : ControllerBase
    {
        private static readonly List<Order> _orders = new();

        [HttpGet]
        public ActionResult<List<Order>> GetOrders()
            => Ok(_orders.OrderByDescending(o => o.PlacedAt).ToList());

        [HttpGet("{id}")]
        public ActionResult<Order> GetById(Guid id)
        {
            var order = _orders.FirstOrDefault(o => o.Id == id);
            return order is null ? NotFound() : Ok(order);
        }

        [HttpPost]
        public ActionResult<Order> Create([FromBody] CreateOrderRequest request)
        {
            var order = new Order
            {
                Id = Guid.NewGuid(),
                UserId = request.UserId,
                Lines = request.Lines,
                Total = request.Lines.Sum(l => l.UnitPrice * l.Quantity),
                Status = OrderStatus.Pending,
                PlacedAt = DateTime.UtcNow
            };
            _orders.Add(order);
            return CreatedAtAction(nameof(GetById), new { id = order.Id }, order);
        }

        [HttpPost("{id}/cancel")]
        public ActionResult<Order> Cancel(Guid id)
        {
            var order = _orders.FirstOrDefault(o => o.Id == id);
            if (order is null)
            {
                return NotFound();
            }

            order.Status = OrderStatus.Cancelled;
            return Ok(order);
        }
    }
}