using Magazyn.DataModels;
using Magazyn.Views;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

using System.Net;
using Magazyn.Windows;

namespace Magazyn
{
    public partial class MainWindow : Window
    {

        public int size = 4;
        public int page = 0;

        bool firstPage;
        bool lastPage;

        HttpClient client;

        Size windowSize;

        public MainWindow()
        {
            InitializeComponent();
            client = new HttpClient();
            this.Loaded += MainWindowLoaded;
        }

        private void MainWindowLoaded(object sender, EventArgs e)
        {
            RefreshListOfFruits();
            windowSize = new Size(this.Width, this.Height);
            this.SizeChanged += Window_SizeChanged;
        }

        private void FruitViewSaveChangingAmountOfFruits(int amountChanged, Fruit fruit)
        {
            string json = "{\"id\": " + fruit.Id.ToString() + ", \"change\": " + amountChanged.ToString() + " }";

            Task<HttpResponseMessage> response = client.PostAsync("https://sysmag.herokuapp.com/api/product/change-quantity", new StringContent(json, Encoding.UTF8, "application/json"));
            while (response.IsCompleted != true) ;

            if (response.Result.StatusCode == HttpStatusCode.BadRequest)
            {
                JObject data = JObject.Parse(response.Result.Content.ReadAsStringAsync().Result.ToString());

                ErrorWindow window;

                if (data["message"].ToString().Contains("Too low"))
                {
                    window = new ErrorWindow("Wystąpił błąd niedomiaru. Próbujesz usunąć więcej owoców niż masz w magazynie.");
                }
                else if (data["message"].ToString().Contains("Over max"))
                {
                    window = new ErrorWindow("Wystąpił błąd nadmiaru. Próbujesz dodać więcej owoców niż pomieści magazyn.");
                }
                else
                {
                    window = new ErrorWindow("Nieznany błąd.");
                }
                window.Owner = this;
                window.ShowDialog();
            }

            RefreshListOfFruits();
        }

        private void RefreshListOfFruits()
        {
            pageBlock.Text = page.ToString();

            Task<HttpResponseMessage> response = client.GetAsync("https://sysmag.herokuapp.com/api/get-all?page=" + page.ToString() + "&size=" + size.ToString());
            while (response.IsCompleted != true) ;

            if (response.Result.StatusCode != HttpStatusCode.OK)
            {
                ErrorWindow window = new ErrorWindow("Nastąpił błąd połączenia z serwerem.");
                window.Owner = this;
                window.ShowDialog();

                page = 0;
                size = 0;

                return;
            }

            string responseString = response.Result.Content.ReadAsStringAsync().Result;

            JObject replay = JObject.Parse(responseString);

            firstPage = bool.Parse(replay["first"].ToString());
            lastPage = bool.Parse(replay["last"].ToString());

            Fruit[] fruits = JsonConvert.DeserializeObject<Fruit[]>(replay["content"].ToString());

            UpdateListOfFruits(fruits);
        }

        private void UpdateListOfFruits(Fruit[] list)
        {
            fruitList.Items.Clear();

            foreach (Fruit item in list)
            {
                FruitView fruitView = new FruitView(item);
                fruitView.SaveChangingAmountOfFruits += FruitViewSaveChangingAmountOfFruits;
                fruitList.Items.Add(fruitView);
            }
        }

        private WarehousePrice GetWarehousePrice()
        {
            Task<HttpResponseMessage> response = client.GetAsync("https://sysmag.herokuapp.com/api/get-price-of-all");
            while (response.IsCompleted != true) ;

            WarehousePrice price = JsonConvert.DeserializeObject<WarehousePrice>(response.Result.Content.ReadAsStringAsync().Result.ToString());

            return price;
        }

        private void Value_Click(object sender, RoutedEventArgs e)
        {
            ValueWindow window = new ValueWindow(GetWarehousePrice().Price);
            window.Owner = this;
            window.ShowDialog();
        }

        private void prevButton_Click(object sender, RoutedEventArgs e)
        {
            if (firstPage != true) page--;
            RefreshListOfFruits();
        }

        private void nextButton_Click(object sender, RoutedEventArgs e)
        {
            if (lastPage != true) page++;
            RefreshListOfFruits();
        }

        private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
        {
            Size size = e.NewSize;
            
            if( Math.Abs(windowSize.Height - size.Height) >= 40 )
            {
                //size -> number of elementy by page
                this.size = (int)((size.Height - 124) / 80);
                page = 0;
                windowSize = size;
                RefreshListOfFruits();
            } 
        }

        private void fruitListMouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            if (fruitList.SelectedItem != null)
            {
                InfoWindow window = new InfoWindow((fruitList.SelectedItem as FruitView).fruit);
                window.Owner = this;
                window.ShowDialog();
            }
        }
    }
}