using BusinessLogic.BusinessLogic;
using Contracts.BindingModels;
using Contracts.BusinessLogicContracts;
using Contracts.Exceptions;
using Contracts.SearchModels;
using Contracts.ViewModels;
using DatabaseImplement.Models;
using DataModels.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using MigraDoc.DocumentObjectModel;
using MigraDoc.Rendering;

namespace RestAPI.Controllers
{
    [Route("[controller]/[action]")]
    [ApiController]
    public class PurchaseController : Controller
    {
        private readonly ILogger _logger;
        private readonly IPurchaseLogic _purchaseLogic;
        private readonly IBillLogic _billLogic;

        public PurchaseController(ILogger<PurchaseController> logger, IPurchaseLogic purchaseLogic, IBillLogic billLogic)
        {
            _logger = logger;
            _purchaseLogic = purchaseLogic;
            _billLogic = billLogic;
        }
        [HttpGet]
        public List<PurchaseViewModel>? GetList(Guid id, Guid userId, double? costfrom, double? costto, DateTime? datefrom, DateTime? dateto)
        {
            try
            {
                if (id == Guid.Empty && userId == Guid.Empty && costfrom == null && costto == null && datefrom == null && dateto == null)
                    return _purchaseLogic.ReadElements(null);

                else
                    return _purchaseLogic.ReadElements(new PurchaseSearchModel()
                    {
                        Id = id,
                        UserId = userId,
                        CostFrom = costfrom,
                        CostTo = costto,
                        DateFrom = datefrom,
                        DateTo = dateto
                    });
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка получения списка покупок");
                throw;
            }
        }

        [HttpGet]
        public PurchaseViewModel Get(Guid id)
        {
            try
            {
                return _purchaseLogic.ReadElement(new PurchaseSearchModel() { Id = id });
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка получения покупки");
                throw;
            }
        }

        [HttpGet]
        public List<ProductViewModel> GetProducts(Guid purchaseid)
        {
            try
            {
                return _purchaseLogic.GetProducts(new PurchaseSearchModel() { Id = purchaseid });
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка получения продукта");
                throw;
            }
        }
        [HttpPost]
        public IResult Create([FromBody] PurchaseBindingModel model)
        {
            try
            {
                var purchase = _purchaseLogic.Create(model);

                return Results.Ok(purchase);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Error create purchase");
                return Results.Problem(ex.Message);
            }
        }

        [HttpPost]
        public IResult CreateBill([FromBody] BillViewModel model)
        {
            try
            {
                _billLogic.CreateBill(model);

                return Results.Ok();
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Error create bill");
                throw;
            }
        }

        [HttpPatch]
        public PurchaseViewModel Update([FromBody] PurchaseBindingModel model)
        {
            try
            {
                var res = _purchaseLogic.Update(model);
                return new PurchaseViewModel()
                { 
                    Id = res.Id,
                    Cost = res.Cost,
                    DateClosed = res.DateClosed,
                    UserId = res.UserId,
                };
            }

            catch (Exception ex)
            {
                _logger.LogError(ex, "Error update purchase");
                return null;
            }
        }
        [HttpGet]
        public byte[] CreateChart(Guid userId)
        {
            Document document = new Document();
            Section section = document.AddSection();

            section.AddParagraph("Столбчатая диаграмма");

            using (MemoryStream stream = new MemoryStream())
            {
                PdfDocumentRenderer renderer = new PdfDocumentRenderer(true, PdfSharp.Pdf.PdfFontEmbedding.Always);
                renderer.Document = document;
                renderer.RenderDocument();

                // Сохранение документа в MemoryStream
                renderer.PdfDocument.Save(stream, false);

                // Получение массива байтов из MemoryStream
                return stream.ToArray();
            }
        }
    }
}