using System.Collections.Generic;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using Church.Net.Entity;
using Church.Net.Utility;
using Microsoft.AspNetCore.Mvc;
using QRCoder;
using SixLabors.Fonts;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Drawing.Processing;
using SixLabors.ImageSharp.Formats;
using SixLabors.ImageSharp.Processing;
using WebAPI.Logics;
using WebAPI.Logics.Interface;

// For more information on enabling Web API for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860

namespace WebAPI.Controllers
{
    [Route("[controller]/[action]")]
    [ApiController]
    public class BestController : ApiControllerBase<HappinessBEST>
    {
        private readonly ICrudLogic<HappinessBEST> logic;
        private readonly ICrudLogic<HappinessWeek> weekLogic;
        private readonly PastoralDomainLogic cellGroupLogic;

        public BestController(
            ICrudLogic<HappinessBEST> logic,
            ICrudLogic<HappinessWeek> weekLogic,
            PastoralDomainLogic cellGroupLogic

            ) : base(logic)
        {
            this.logic = logic;
            this.weekLogic = weekLogic;
            this.cellGroupLogic = cellGroupLogic;
        }

        // GET api/<BestController>/5
        public override Task<IEnumerable<HappinessBEST>> GetAll()
        {
            return base.GetAll();
        }

        public override Task<HappinessBEST> GetById(string id)
        {
            return Task<HappinessBEST>.Run(() => {
                var best = logic.GetById(id);
                best.HappinessGroup = cellGroupLogic.GetById(best.GroupId);
                best.HappinessGroup.HappinessWeeks = weekLogic.GetAll(w => w.GroupId == best.GroupId).OrderBy(w=>w.SEQ).ToList();
                return best;
            });
        }

        [HttpGet()]
        public async Task<IActionResult> GetInvitationQRcode(string id)
        {

            QRCodeGenerator gen = new QRCodeGenerator();
            QRCodeGenerator qrGenerator = new QRCodeGenerator();
            QRCodeData qrCodeData = qrGenerator.CreateQrCode($"https://happiness.tours/invitation/{id}", QRCodeGenerator.ECCLevel.Q);            
            QRCode qrCode = new QRCode(qrCodeData);
            var qrCodeImage = qrCode.GetGraphic(3);
            string qrCodeImagePath = "/App_Data/ScaneMeQrCode.png";


            var backgroundBitmap = SixLabors.ImageSharp.Image.Load(qrCodeImagePath);
            //string qrCodeImagePath = Environment.GetEnvironmentVariable("AppData");
            //HttpContext.Current.Server.MapPath("~/App_Data/");
            //var fullPath = System.Web.Hosting.HostingEnvironment.MapPath(@"~/App_Data/ScaneMeQrCode.png");
            //System.Web.Hosting.HostingEnvironment.MapPath(@"~/App_Data/yourXmlFile.xml");

            int positionLeft = 0;
            int positionTop = 0;
            var best = logic.GetById(id);
            if (best != null)
            {
                using (var memoryStream = new MemoryStream())
                {
                    //fileStream.CopyTo(memoryStream);
                    var image = Superimpose(best.Name, backgroundBitmap, qrCodeImage, 10, 32);
                    image.Scalling(75);
                    image.SaveAsPng(memoryStream);
                    byte[] byteImage = memoryStream.ToArray();
                    return File(byteImage, "image/png");
                }
            }

            return this.NotFound();
        }

        [HttpPost]
        public int UpdateBestWeek(HappinessWeek week)
        {
            return weekLogic.CreateOrUpdate(week,out string id);
        }

        private Font arialFont;
        [NonAction]
        public Image Superimpose(string bestName, Image largeBmp, Image smallBmp, int? x = null, int? y = null)
        {
            FontCollection collection = new();
            FontFamily family = collection.Add("/App_Data/arial.ttf");
            arialFont = family.CreateFont(12, FontStyle.Italic);
            //Graphics g = Graphics.FromImage(largeBmp);
            //g.CompositingMode = CompositingMode.SourceOver;
            //smallBmp.MakeTransparent();
            int margin = 5;
            if (!x.HasValue)
            {
                x = largeBmp.Width - smallBmp.Width - margin;
            }
            if (!y.HasValue)
            {
                y = largeBmp.Height - smallBmp.Height - margin;
            }
            var scale = 0.8;
            var scaleWidth = (int)(smallBmp.Width * scale);
            var scaleHeight = (int)(smallBmp.Height * scale);


            largeBmp.Mutate(x => x.DrawText(bestName, arialFont, Color.Black, new PointF(10, 10)));

            smallBmp.Scalling(80);            

            largeBmp.Mutate(ctx => ctx.DrawImage(smallBmp, new Point(x.Value, y.Value),1f));
            return largeBmp;
        }

    }
}