using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion.Internal;
using ProRestaurant.Classes;
using ProRestaurant.DBContexts;
using ProRestaurant.Models.Restaurants;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;

namespace ProRestaurant.Repository.Restaurants
{
    public class MenuItemRepository : IMenuItemRepository
    {
        private readonly DBContext dBContext;

        public MenuItemRepository(DBContext db)
        {
            dBContext = db;
        }

        public MenuItem GetMenuItem(int Id)
        {
            var item = dBContext.MenuItems.Where(m => m.Id == Id).FirstOrDefault();

            if (item == null)
            {
                item = new MenuItem();
            }
            else
            {
                if (item.CategoryId > 0)
                    item.Category = dBContext.MenuCategories.Where(c => c.Id == item.CategoryId).Select(c => c.Description).FirstOrDefault();

                if (!string.IsNullOrEmpty(item.Image))
                {
                    if (!item.Image.Contains("data:image"))
                        item.Image = ImageFormatter.ImageToBase64(item.Image);
                }

                item.Options = dBContext.MenuOptions.Where(o => o.MenuItemId == item.Id).ToList();
            }

            return item;
        }

        public IEnumerable<MenuItem> GetMenuItems(Func<MenuItem, bool> where)
        {
            var items = dBContext.MenuItems.Where(where).ToList();

            foreach (var item in items)
            {
                if (item.CategoryId > 0)
                    item.Category = dBContext.MenuCategories.Where(c => c.Id == item.CategoryId).Select(c => c.Description).FirstOrDefault();

                if (!string.IsNullOrEmpty(item.Image))
                {
                    if (!item.Image.Contains("data:image"))
                        item.Image = ImageFormatter.ImageToBase64(item.Image);
                }
            }

            return items;
        }

        public void Insert(MenuItem Item)
        {
            Item.Image = SaveImage(Item);
            dBContext.Add(Item);
            Save();
        }

        public void Remove(MenuItem Item)
        {
            dBContext.MenuItems.Remove(Item);
            Save();
        }

        public void Save()
        {
            dBContext.SaveChanges();
        }

        public void Update(MenuItem Item)
        {
            Item.Image = SaveImage(Item);
            dBContext.Entry(Item).State = EntityState.Modified;
            Save();
        }

        private string SaveImage(MenuItem Item)
        {
            string image = Item.Image;
            if (!string.IsNullOrEmpty(Item.Image))
            {
                bool saveFile = false;
                var loc = dBContext.Locations.FirstOrDefault()?.ImageStore;
                if (!string.IsNullOrEmpty(loc))
                {
                    var rest = dBContext.Restaurants.Where(r => r.Id == Item.RestaurantId).FirstOrDefault();
                    var folderName = rest.Name + "-" + rest.Suburb;
                    saveFile = true;
                    loc += string.Format("{0}", folderName);
                    if (!Directory.Exists(loc))
                    {
                        Directory.CreateDirectory(loc);
                    }

                    if (saveFile)
                    {
                        string path = ImageFormatter.Base64ToImage(Item.Image, loc, Item.Name.Trim());
                        image = path;
                    }                    
                }
            }
            return image;
        }
    }
}