using GerbilManagerWebAPI.Models;
using GerbilManagerWebAPI.DAL;
using GerbilManagerWebAPI.Dtos;

using GerbilManagerWebAPI.Converter;

using Microsoft.AspNetCore.Mvc;
using System.Xml;

namespace GerbilManagerWebAPI.Controllers
{
    [ApiController]
    [Route("breeders")]
    public class BreederController : ControllerBase
    {
        private readonly UnitOfWork unitOfWork;

        public BreederController(UnitOfWork unitOfWork)
        {
            this.unitOfWork = unitOfWork;
        }

        //GET /gerbils
        [HttpGet]
        public IEnumerable<BreederDto> GetBreeders()
        {
            var items = unitOfWork.BreederRepository.Get().Select( breeder => breeder.AsDto());
            return items;
        }

        //GET /gerbils
        [HttpGet("{id}")]
        public ActionResult<BreederDto> GetBreeder(Guid id)
        {
            var item = unitOfWork.BreederRepository.GetByID(id).AsDto();

            if(item is null)
            {
                return NotFound();
            }
            return item;
        }

        [HttpPost()]
        public ActionResult<BreederDto> CreateBreeder(CreateBreederDto dto)
        {
            Breeder breeder = new Breeder{
                Id = Guid.NewGuid(),
                Name = dto.Name,
            };

            this.unitOfWork.BreederRepository.Insert(breeder);
            this.unitOfWork.Save();

            return CreatedAtAction(nameof(GetBreeder), new { id = breeder.Id}, breeder.AsDto());
        }

        [HttpPut("{id}")]
        public ActionResult UpdateBreeder(Guid id, UpdateBreederDto breederDto)
        {
            var existingItem = unitOfWork.BreederRepository.GetByID(id);
            if(existingItem is null)
            {
                return NotFound();
            }

            Breeder updatedBreeder = existingItem with {
                Name = breederDto?.Name!
            };

            unitOfWork.BreederRepository.Update(updatedBreeder);
            this.unitOfWork.Save();
            return NoContent();
        }

        [HttpDelete("{id}")]
        public ActionResult DeleteBreeder(Guid id)
        {
            var existingLitter = unitOfWork.BreederRepository.GetByID(id);

            if(existingLitter is null)
            {
                return NotFound();
            }

            unitOfWork.BreederRepository.Delete(existingLitter);
            this.unitOfWork.Save();

            return NoContent();
        }
    }
}