using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using StardewModdingAPI.Events;
using StardewValley;
using StardewValley.Menus;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace UIInfoSuite.UIElements
{
    class ShowAccurateHearts : IDisposable
    {
        private String[] _friendNames;
        private SocialPage _socialPage;

        private readonly int[][] _numArray = new int[][]
        {
            new int[] { 1, 1, 0, 1, 1 },
            new int[] { 1, 1, 1, 1, 1 },
            new int[] { 0, 1, 1, 1, 0 },
            new int[] { 0, 0, 1, 0, 0 }
        };

        public void ToggleOption(bool showAccurateHearts)
        {
            MenuEvents.MenuChanged -= OnMenuChange;
            GraphicsEvents.OnPostRenderGuiEvent -= DrawHeartFills;

            if (showAccurateHearts)
            {
                MenuEvents.MenuChanged += OnMenuChange;
                GraphicsEvents.OnPostRenderGuiEvent += DrawHeartFills;
            }
        }

        public void Dispose()
        {
            ToggleOption(false);
        }

        private void DrawHeartFills(object sender, EventArgs e)
        {
            if (Game1.activeClickableMenu is GameMenu)
            {
                GameMenu gameMenu = Game1.activeClickableMenu as GameMenu;

                if (gameMenu.currentTab == 2)
                {
                    int slotPosition = (int)typeof(SocialPage)
                        .GetField(
                            "slotPosition", 
                            BindingFlags.Instance | BindingFlags.NonPublic)
                            .GetValue(_socialPage);
                    int yOffset = 0;

                    for (int i = slotPosition; i < slotPosition + 5 && i <= _friendNames.Length; ++i)
                    {
                        int yPosition = Game1.activeClickableMenu.yPositionOnScreen + 130 + yOffset;
                        yOffset += 112;
                        Friendship friendshipValues;
                        if (Game1.player.friendshipData.TryGetValue(_friendNames[i], out friendshipValues))
                        {
                            int friendshipRawValue = friendshipValues.Points;

                            if (friendshipRawValue > 0)
                            {
                                int pointsToNextHeart = friendshipRawValue % 250;
                                int numHearts = friendshipRawValue / 250;

                                if (friendshipRawValue < 3000 && 
                                    _friendNames[i] == Game1.player.spouse || 
                                    friendshipRawValue < 2500)
                                {
                                    DrawEachIndividualSquare(numHearts, pointsToNextHeart, yPosition);
                                    //if (!Game1.options.hardwareCursor)
                                    //    Game1.spriteBatch.Draw(
                                    //        Game1.mouseCursors,
                                    //        new Vector2(Game1.getMouseX(), Game1.getMouseY()),
                                    //        Game1.getSourceRectForStandardTileSheet(
                                    //            Game1.mouseCursors, Game1.mouseCursor,
                                    //            16,
                                    //            16),
                                    //        Color.White,
                                    //        0.0f,
                                    //        Vector2.Zero,
                                    //        Game1.pixelZoom + (float)(Game1.dialogueButtonScale / 150.0),
                                    //        SpriteEffects.None,
                                    //        1f);
                                }
                            }
                        }
                    }

                    String hoverText = typeof(GameMenu).GetField("hoverText", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(gameMenu) as String;
                    IClickableMenu.drawHoverText(
                        Game1.spriteBatch,
                        hoverText,
                        Game1.smallFont);
                }
            }
        }

        private void OnMenuChange(object sender, EventArgsClickableMenuChanged e)
        {
            if (Game1.activeClickableMenu is GameMenu)
            {
                List<IClickableMenu> menuList = typeof(GameMenu).GetField("pages", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(Game1.activeClickableMenu) as List<IClickableMenu>;

                foreach (var menu in menuList)
                {
                    if (menu is SocialPage)
                    {
                        _socialPage = menu as SocialPage;
                        var npcNames = typeof(SocialPage).GetField("npcNames", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(_socialPage) as Dictionary<String, String>;
                        _friendNames = npcNames.Keys.ToArray();
                        break;
                    }
                }
            }
        }

        private void DrawEachIndividualSquare(int friendshipLevel, int friendshipPoints, int yPosition)
        {
            int numberOfPointsToDraw = friendshipPoints / 20;
            int num2;

            if (friendshipLevel > 10)
            {
                num2 = 32 * (friendshipLevel - 10);
                yPosition += 28;
            }
            else
            {
                num2 = 32 * friendshipLevel;
            }

            for (int i = 3; i >= 0 && numberOfPointsToDraw > 0; --i)
            {
                for (int j = 0; j < 5 && numberOfPointsToDraw > 0; ++j, --numberOfPointsToDraw)
                {
                    if (_numArray[i][j] == 1)
                    {
                        Game1.spriteBatch.Draw(
                            Game1.staminaRect,
                            new Rectangle(
                                Game1.activeClickableMenu.xPositionOnScreen + 316 + num2 + j * 4,
                                yPosition + 14 + i * 4,
                                4,
                                4),
                            Color.Crimson);
                    }
                }
            }
        }
    }
}