using Android.App;
using Android.Content;
using Android.Views;
using Android.Widget;
using Android.OS;
using System.Collections.Generic;
using Android.Support.V4.View;
using FoodNavigator.Resources.database;
using Android.Locations;

using FoodNavigator.Resources.near_you_base;
using Android.Support.V4.App;
using System.Threading.Tasks;
using Newtonsoft.Json;
using System.IO;
using System.Json;
using System.Net;
using Plugin.Geolocator;
using System;
using System.Globalization;
using Android.App.Usage;

namespace FoodNavigator
{
    [Activity(Label = "FoodNavigator", MainLauncher = true, Icon = "@drawable/icon")]

    public class MainActivity : FragmentActivity
    {
        private ViewPager mViewPager;
        private SlidingTabLayout mScrollView;

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Setting . instead of , in deciminals
            string currentCulture = System.Threading.Thread.CurrentThread.CurrentCulture.Name;
            CultureInfo ci = new CultureInfo(currentCulture);
            ci.NumberFormat.NumberDecimalSeparator = ".";
            System.Threading.Thread.CurrentThread.CurrentCulture = ci;

            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.Main);
            mScrollView = FindViewById<SlidingTabLayout>(Resource.Id.sliding_tabs);
            mViewPager = FindViewById<ViewPager>(Resource.Id.viewPager);
            mViewPager.Adapter = new SamplePagerAdapter(SupportFragmentManager);
            mScrollView.ViewPager = mViewPager;
        }

        public override bool OnCreateOptionsMenu(IMenu menu)
        {
            MenuInflater.Inflate(Resource.Menu.actionbar_menu,menu);
            return base.OnCreateOptionsMenu(menu);
        }
    }

    public class SamplePagerAdapter : FragmentPagerAdapter
    {
        private List<Android.Support.V4.App.Fragment> mFragmentHolder;

        public SamplePagerAdapter(Android.Support.V4.App.FragmentManager fragManager) : base(fragManager)
        {
            mFragmentHolder = new List<Android.Support.V4.App.Fragment>();
            mFragmentHolder.Add(new liked_food_class());
            mFragmentHolder.Add(new near_restaurants_class());
            mFragmentHolder.Add(new navigation_class());
        }

        public override int Count
        {
            get { return mFragmentHolder.Count; }
        }

        public override Android.Support.V4.App.Fragment GetItem(int position)
        {
            return mFragmentHolder[position];
        }
    }

    public class liked_food_class : Android.Support.V4.App.Fragment
    {
        #region variables
        CheckBox[] table = new CheckBox[15];
        List<string> List_of_food = new List<string>();
        DataBase db;
        list_of_food list_food = new list_of_food();
        List<example> saved_data = new List<example>();
#endregion

        public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {

            var view = inflater.Inflate(Resource.Layout.liked_food_layout, container, false);

            List_of_food = list_food.get_food();
            db = new DataBase();
            db.createDataBase();

            load_data();

            #region checkboxes declarations
            table[0] = view.FindViewById<CheckBox>(Resource.Id.c1);
            table[1] = view.FindViewById<CheckBox>(Resource.Id.c2);
            table[2] = view.FindViewById<CheckBox>(Resource.Id.c3);
            table[3] = view.FindViewById<CheckBox>(Resource.Id.c4);
            table[4] = view.FindViewById<CheckBox>(Resource.Id.c5);
            table[5] = view.FindViewById<CheckBox>(Resource.Id.c6);
            table[6] = view.FindViewById<CheckBox>(Resource.Id.c7);
            table[7] = view.FindViewById<CheckBox>(Resource.Id.c8);
            table[8] = view.FindViewById<CheckBox>(Resource.Id.c9);
            table[9] = view.FindViewById<CheckBox>(Resource.Id.c10);
            table[10] = view.FindViewById<CheckBox>(Resource.Id.c11);
            table[11] = view.FindViewById<CheckBox>(Resource.Id.c12);
            table[12] = view.FindViewById<CheckBox>(Resource.Id.c13);
            table[13] = view.FindViewById<CheckBox>(Resource.Id.c14);
            table[14] = view.FindViewById<CheckBox>(Resource.Id.c15);
            #endregion
            load_data();

            if (saved_data.Count == 0)
            {
                fill_database();
                load_data();
            }

            checkbox_load();
            checkbox_database();

            return view;
        }

        public void fill_database()
        {
            int x = 0;

            foreach (var item in List_of_food)
            {
                example przyklad = new example()
                {
                    id = x,
                    name = List_of_food[x],
                    is_checked = false,
                };

                db.insertIntoTableLikedFood(przyklad);

                x++;
            }
        }

        public void checkbox_load()
        {
            int x = 0;

            foreach (var item in table)
            {
                table[x].Text = List_of_food[x];

                item.Click += delegate
                {
                    example przyklad = new example();

                    if (item.Checked == true)
                    {
                        przyklad.is_checked = true;
                    }
                    else
                    {
                        przyklad.is_checked = false;
                    }

                    przyklad.name = item.Text;
                    db.updateTableLikedFood(przyklad);
                    load_data();
                };

                x++;
            }
        }

        public void load_data()
        {
            saved_data = db.selectTableLikedFood();
        }

        public void checkbox_database()
        {
            int x = 0;
            foreach (var item in saved_data)
            {
                if (item.is_checked == true)
                {
                    table[x].Checked = true;
                }
                else
                {
                    table[x].Checked = false;
                }
                x++;
            }
        }

        public override string ToString()
        {
            return "liked food";
        }

    }

    public class near_restaurants_class : Android.Support.V4.App.Fragment
    {
        #region variables
        Plugin.Geolocator.Abstractions.Position position = new Plugin.Geolocator.Abstractions.Position();
        List<restaurant_template> restaurant_base = new List<restaurant_template>();
        ListView list;
        LocationManager lm;
        DataBase db;
        Button search;
        SeekBar radius;
        double? lat=null,lon=null;
        bool gps_is_on = false;
        #endregion

        public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            var view = inflater.Inflate(Resource.Layout.near_rest_layout, container, false);
            list =  view.FindViewById<ListView>(Resource.Id.list_view);

            TextView search_radius_text = view.FindViewById<TextView>(Resource.Id.search_radius);
            TextView search_radius_distance = view.FindViewById<TextView>(Resource.Id.search_distance);
            search_radius_distance.Text = ("Distance: 10 km");

            radius = view.FindViewById<SeekBar>(Resource.Id.seekBar1);
            radius.Max = 20;
            radius.Progress = 1;
            radius.Progress = 10;

            lm = (LocationManager)Context.GetSystemService(Context.LocationService);

            search = view.FindViewById<Button>(Resource.Id.button1);

            radius.ProgressChanged += delegate
            {
                search_radius_distance.Text = string.Format("Distance: {0} km",radius.Progress.ToString());
            };

            find_position();

            search.Click += delegate
            {
                check_connection();

                if (lat!=null && lon!=null && check_connection()==true)
                {
                    find_locals();
                    search.Visibility = ViewStates.Invisible;
                    search_radius_text.Visibility = ViewStates.Invisible;
                    radius.Visibility = ViewStates.Invisible;
                    search_radius_distance.Visibility = ViewStates.Invisible;
                }
                else
                {
                    find_position();
                }
            };
           return view;
        }

        bool check_connection()
        {
            try
            {
                HttpWebRequest iNetRequest = (HttpWebRequest)WebRequest.Create("https://maps.googleapis.com");
                iNetRequest.Timeout = 5000;
                WebResponse iNetResponse = iNetRequest.GetResponse();
                iNetResponse.Close();
                return true;
            }
            catch
            {
                Toast.MakeText(this.Activity, "Please check your internet connection", ToastLength.Short).Show();
                return false;
            }
        }

        async void find_position()
        {
            gps_is_on = lm.IsProviderEnabled(LocationManager.GpsProvider);

            if (gps_is_on==true)
            {
                try
                {
                    Toast.MakeText(this.Activity, "Searching your location", ToastLength.Short).Show();
                    var locator = CrossGeolocator.Current;
                    locator.DesiredAccuracy = 50;
                    position = await locator.GetPositionAsync(timeoutMilliseconds: 10000);

                    if (lat == null && lon == null)
                    {
                        lat = position.Latitude;
                        lon = position.Longitude;
                        Toast.MakeText(this.Activity, "Found your location", ToastLength.Short).Show();
                    }
                }
                catch
                {
                    Toast.MakeText(this.Activity, "Problem with gps status", ToastLength.Short).Show();
                    find_position();
                }
            }
            else
            {
                Toast.MakeText(this.Activity, "Please turn on gps", ToastLength.Short).Show();
            }
        }

        async public void find_locals()
        {
            db = new DataBase();
            List<example> nowa = db.selectTableLikedFood();
            bool add_plus = false;

            string url = ("https://maps.googleapis.com/maps/api/place/textsearch/json?query=");

            foreach(var item in nowa)
            {
                if(item.is_checked==true && add_plus==false)
                {
                    url += item.name;
                    add_plus = true;
                }
                else if (item.is_checked == true && add_plus == true)
                {
                    url += ",";
                    url += item.name;
                }
            }

            url += ("&location=");
            url += Math.Round(lat.Value, 7).ToString();
            url += ",";
            url += Math.Round(lon.Value, 7).ToString();
            url += ("&radius=");
            url += (radius.Progress*1000).ToString();
            url +=("&key=AIzaSyDXwGerP7xjveXn2KgQLI_Cvpuk7s7vAGs");

            Console.WriteLine(url);
            JsonValue the_list = await get_restaurants(url);
            var result = JsonConvert.DeserializeObject<Restaurant.RootObject>(the_list.ToString());
            List<Restaurant.Result> final_list = result.results;

            foreach (Restaurant.Result item in final_list)
            {
                restaurant_template temp = new restaurant_template()
                {
                    name = item.name.ToUpper(),
                    is_open = "open: " + item.opening_hours.open_now.ToString(),
                    rating = "rating: " + item.rating.ToString(),
                    distance = "distance: to do",
                    address = "address: " + item.formatted_address,
                    type = "type: " + item.types[0]

                };
                restaurant_base.Add(temp);
            }

            list_view_adapter adapter = new list_view_adapter(this.Activity, restaurant_base);
            list.Adapter = adapter;
            list.ItemLongClick += list_item_click;
        }

        private void list_item_click(object sender, AdapterView.ItemLongClickEventArgs e)
        {
            Android.Support.V4.App.FragmentTransaction transaction = FragmentManager.BeginTransaction();
            restaurant_dialog show_details = new restaurant_dialog();
            show_details.add_to_restaurant(restaurant_base[e.Position].name);
            show_details.add_to_restaurant(restaurant_base[e.Position].is_open);
            show_details.add_to_restaurant(restaurant_base[e.Position].address);
            show_details.add_to_restaurant(restaurant_base[e.Position].type);
            show_details.add_to_restaurant(restaurant_base[e.Position].rating);

            show_details.Show(transaction,"details");
        }

        private async Task<JsonValue> get_restaurants(string url)
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new System.Uri(url));
            request.ContentType = "application/json";
            request.Method = "GET";

            using (WebResponse response = await request.GetResponseAsync())
            {
                using (Stream stream = response.GetResponseStream())
                {
                    JsonValue jsonDoc = await Task.Run(() => JsonObject.Load(stream));
                    return jsonDoc;
                }
            }
        }

        public override string ToString()
        {
            return "nearest restaurants";
        }

    }

    public class navigation_class : Android.Support.V4.App.Fragment
    {
        public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
        {
            var view = inflater.Inflate(Resource.Layout.navigate_layout, container, false);
            return view;
        }

        public override string ToString()
        {
            return "navigation tab";
        }
    }
}