using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input.Touch;
using Penguloon.Controls;
using Penguloon.Levels;
using System;

namespace Penguloon.Scenes
{
    public class GameScene : SceneBase
    {
        public LevelBase Level { get; set; }

        public float Speed { get; set; } = 1f;

        public ButtonIngame StartRoundBtn { get; set; }
        public SpeedButton ChangeSpeedBtn { get; set; }
        public ButtonIngame OptionsBtn { get; set; }
        public IngameOptions OptionsMenu { get; set; }
        public IngameEndStats IngameEndStats { get; set; }

        public ObjectSelector ObjectSeletor { get; set; }

        public GameScene(Main main, LevelBase level) : base(main)
        {
            this.Level = level;
            this.Level.Initialize(this);

            StartRoundBtn = new ButtonIngame(this,
            new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth, StaticUIValues.ScreenViewport.Y - StaticUIValues.IngameUIPlayButtonHeight),
            new Vector2(StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth), StaticUIValues.IngameUIPlayButtonHeight), Main.Resources.GetString(Resource.String.IngameStart));

            OptionsBtn = new ButtonIngame(this,
            new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth, StaticUIValues.ScreenViewport.Y - StaticUIValues.IngameUIPlayButtonHeight - StaticUIValues.IngameUIPlayButtonHeight - StaticUIValues.BorderWidth),
            new Vector2(StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth), StaticUIValues.IngameUIPlayButtonHeight), Main.Resources.GetString(Resource.String.IngameOptions));

            ChangeSpeedBtn = new SpeedButton(this,
            new Vector2(Level.Map.MapWidth - StaticUIValues.ChangeSpeedButtonWidth, StaticUIValues.ScreenViewport.Y - StaticUIValues.IngameUIPlayButtonHeight),
            new Vector2(StaticUIValues.ChangeSpeedButtonWidth, StaticUIValues.IngameUIPlayButtonHeight), "X1");

            OptionsMenu = new IngameOptions(this,
            new Vector2((StaticUIValues.ScreenViewport.X / 2) - (StaticUIValues.IngameOptionsSize.X / 2),
            (StaticUIValues.ScreenViewport.Y / 2) - (StaticUIValues.IngameOptionsSize.Y / 2)),
            StaticUIValues.IngameOptionsSize);

            IngameEndStats = new IngameEndStats(this,
            new Vector2((StaticUIValues.ScreenViewport.X / 2) - (StaticUIValues.IngameOptionsSize.X / 2),
            (StaticUIValues.ScreenViewport.Y / 2) - (StaticUIValues.IngameOptionsSize.Y / 2)),
            StaticUIValues.IngameOptionsSize);

            ChangeSpeedBtn.OnClick += ChangeSpeedBtn_OnClick;
            StartRoundBtn.OnClick += StartRoundBtn_OnClick;
            OptionsBtn.OnClick += OptionsBtn_OnClick;

            ObjectSeletor = new ObjectSelector(level.Map, this,
            new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth, StaticUIValues.IngameUITextAreaHeight + StaticUIValues.BorderWidth),
            new Vector2((int)StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth),
            StaticUIValues.ScreenViewport.Y - StaticUIValues.IngameUITextAreaHeight - StaticUIValues.BorderWidth - StaticUIValues.BorderWidth - StaticUIValues.IngameUIPlayButtonHeight - StaticUIValues.BorderWidth - StaticUIValues.IngameUIPlayButtonHeight));

        }

        private void OptionsBtn_OnClick(object sender, ClickArgs e)
        {
            if (OptionsMenu.State == IngameOptionsState.Hide)
            {
                OptionsMenu.ShowTime = DateTime.Now;
                OptionsMenu.State = IngameOptionsState.Show;
            }
        }

        private void ChangeSpeedBtn_OnClick(object sender, ClickArgs e)
        {
            switch (Speed)
            {
                case 1f: Speed = 2f; break;
                case 2f: Speed = 3f; break;
                case 3f: Speed = 1f; break;

                default: Speed = 1f; break;
            }

            ChangeSpeedBtn.Text = "X" + Math.Round(Speed, 0).ToString();
        }

        private void StartRoundBtn_OnClick(object sender, ClickArgs e)
        {
            Level.Map.WaveManager.StartSpawningEnemies();
            ButtonIngame btn = (ButtonIngame)sender;
            btn.ControlState = ControlState.Disabled;
        }

        public override void CreateControls()
        {

        }

        public override void Draw(float deltaTime)
        {
            // background
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/background"),
                destinationRectangle: new Rectangle(0, 0, (int)StaticUIValues.ScreenViewport.X, (int)StaticUIValues.ScreenViewport.Y));

            base.Draw(deltaTime);

            this.Level.Draw(deltaTime);

            if (Level.SelectedObject == null)
            {
                DrawUI(deltaTime);

                StartRoundBtn.Draw(deltaTime);
                ObjectSeletor.Draw(deltaTime);
                ChangeSpeedBtn.Draw(deltaTime);
                OptionsBtn.Draw(deltaTime);
                OptionsMenu.Draw(deltaTime);
            }
            // show upgrade menu of object is selected
            else
            {
                DrawUpgradeUI();
            }

            // draw "game over" controls here 
            IngameEndStats.Draw(deltaTime);
        }

        private void DrawUpgradeUI()
        {
            //background
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/objectSelectionBackground"),
                destinationRectangle: new Rectangle(Level.Map.MapWidth + StaticUIValues.BorderWidth,
            0, (int)StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth), (int)StaticUIValues.ScreenViewport.Y));

            if (Level.SelectedObject != null)
            {
                for (int i = 0; i < Level.SelectedObject.UpgradeList.Count; i++)
                {
                    Level.SelectedObject.UpgradeList[i].Draw(Main.SpriteBatch, i);
                }
            }

            //border
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/border"),
            destinationRectangle: new Rectangle(Level.Map.MapWidth,
            0, StaticUIValues.BorderWidth, (int)StaticUIValues.ScreenViewport.Y));

            //border under text
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/border-horizontal"),
           destinationRectangle: new Rectangle(Level.Map.MapWidth + StaticUIValues.BorderWidth - 4,
           StaticUIValues.IngameUITextAreaHeight, (int)StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth - 5), StaticUIValues.BorderWidth));

            DrawText(ContentManager.GetFont(StaticUIValues.IngameFont), Main.Resources.GetString(Resource.String.IngameGold) + ": " + Level.Money,
                new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth + 5, 10),
                new Vector2(StaticUIValues.ScreenViewport.X - Level.Map.MapWidth - StaticUIValues.BorderWidth, StaticUIValues.IngameUITextAreaHeight),
                TextAllignment.LeftTop, Color.White, Color.Black, 2);

            DrawText(ContentManager.GetFont(StaticUIValues.IngameFont), Main.Resources.GetString(Resource.String.IngameWave) + ": " + Level.Map.WaveManager.CurrentWave.ToString(),
                new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth + 5, 0),
                new Vector2(StaticUIValues.ScreenViewport.X - Level.Map.MapWidth - StaticUIValues.BorderWidth, StaticUIValues.IngameUITextAreaHeight),
                TextAllignment.LeftMiddle, Color.White, Color.Black, 2);

            DrawText(ContentManager.GetFont(StaticUIValues.IngameFont), Main.Resources.GetString(Resource.String.IngameHealth) + ": " + Level.Health,
                new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth + 5, 0),
                new Vector2(StaticUIValues.ScreenViewport.X - Level.Map.MapWidth - StaticUIValues.BorderWidth, StaticUIValues.IngameUITextAreaHeight),
                TextAllignment.LeftBottom, Color.White, Color.Black, 2);
        }

        private void DrawUI(float deltaTime)
        {
            //background
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/objectSelectionBackground"),
                destinationRectangle: new Rectangle(Level.Map.MapWidth + StaticUIValues.BorderWidth,
            0, (int)StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth), (int)StaticUIValues.ScreenViewport.Y));

            //border
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/border"),
            destinationRectangle: new Rectangle(Level.Map.MapWidth,
            0, StaticUIValues.BorderWidth, (int)StaticUIValues.ScreenViewport.Y));
          
            //border under text
             Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/border-horizontal"),
            destinationRectangle: new Rectangle(Level.Map.MapWidth + StaticUIValues.BorderWidth - 4,
            StaticUIValues.IngameUITextAreaHeight, (int)StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth - 5), StaticUIValues.BorderWidth));

            //border above options
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/border-horizontal"),
           destinationRectangle: new Rectangle(Level.Map.MapWidth + StaticUIValues.BorderWidth - 4,
           (int)StaticUIValues.ScreenViewport.Y - StaticUIValues.IngameUIPlayButtonHeight - StaticUIValues.BorderWidth - StaticUIValues.IngameUIPlayButtonHeight - StaticUIValues.BorderWidth,
            (int)StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth - 5), StaticUIValues.BorderWidth));

            //border above button
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/border-horizontal"),
           destinationRectangle: new Rectangle(Level.Map.MapWidth + StaticUIValues.BorderWidth - 4,
           (int)StaticUIValues.ScreenViewport.Y - StaticUIValues.IngameUIPlayButtonHeight - StaticUIValues.BorderWidth,
            (int)StaticUIValues.ScreenViewport.X - (Level.Map.MapWidth + StaticUIValues.BorderWidth - 5), StaticUIValues.BorderWidth));

            DrawText(ContentManager.GetFont(StaticUIValues.IngameFont), Main.Resources.GetString(Resource.String.IngameGold) + ": " + Level.Money, 
                new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth + 5, 10), 
                new Vector2(StaticUIValues.ScreenViewport.X - Level.Map.MapWidth - StaticUIValues.BorderWidth, StaticUIValues.IngameUITextAreaHeight), 
                TextAllignment.LeftTop, Color.White, Color.Black, 2);

            DrawText(ContentManager.GetFont(StaticUIValues.IngameFont), Main.Resources.GetString(Resource.String.IngameWave) + ": " + Level.Map.WaveManager.CurrentWave.ToString(),
                new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth + 5, 0),
                new Vector2(StaticUIValues.ScreenViewport.X - Level.Map.MapWidth - StaticUIValues.BorderWidth, StaticUIValues.IngameUITextAreaHeight),
                TextAllignment.LeftMiddle, Color.White, Color.Black, 2);

            DrawText(ContentManager.GetFont(StaticUIValues.IngameFont), Main.Resources.GetString(Resource.String.IngameHealth) + ": " + Level.Health,
                new Vector2(Level.Map.MapWidth + StaticUIValues.BorderWidth + 5, 0),
                new Vector2(StaticUIValues.ScreenViewport.X - Level.Map.MapWidth - StaticUIValues.BorderWidth, StaticUIValues.IngameUITextAreaHeight),
                TextAllignment.LeftBottom, Color.White, Color.Black, 2);
        }

        public override void Update(float deltaTime, TouchLocation[] touchLocations)
        {
            // We shouldn't update controls when the game is finished to prevent the user from placing any more objects
            if (!Level.Finished && Level.SelectedObject == null)
            {
                base.Update(deltaTime, touchLocations);
                StartRoundBtn.Update(deltaTime, touchLocations);
                ObjectSeletor.Update(deltaTime, touchLocations);
                ChangeSpeedBtn.Update(deltaTime, touchLocations);
                OptionsBtn.Update(deltaTime, touchLocations);
                OptionsMenu.Update(deltaTime, touchLocations);
            }
            // update finished controls here 
            else if (Level.Finished)
            {
                IngameEndStats.Update(deltaTime, touchLocations);
            }
            // update upgrade menu here
            else
            {
                UpdateUpgradeMenu(touchLocations);
            }

            if (StartRoundBtn.ControlState == ControlState.Disabled && !Level.Map.WaveManager.RoundActive && !Level.Finished)
            {
                StartRoundBtn.ControlState = ControlState.Idle;
                Level.Map.WaveManager.FinishRound();
            }

            this.Level.Update(deltaTime * Speed, touchLocations);
        }

        private void UpdateUpgradeMenu(TouchLocation[] touchLocations)
        {
            int startY = StaticUIValues.IngameUITextAreaHeight + StaticUIValues.BorderWidth;

            if (Level.SelectedObject != null)
            {
                // for each available upgrade in selected object
                for (int i = 0; i < Level.SelectedObject.UpgradeList.Count; i++)
                {
                    Level.SelectedObject.UpgradeList[i].State = Objects.UpgradeState.Idle;

                    Rectangle upgradeBox = new Rectangle(
                    (int)Level.Map.MapWidth,
                    startY + (int)StaticUIValues.UpgradePanelSize.Y * i,
                    (int)StaticUIValues.UpgradePanelSize.X,
                    (int)StaticUIValues.UpgradePanelSize.Y);

                    for (int x = 0; x < touchLocations.Length; x++)
                    {
                        // if finger is released on upgrade box
                        if (touchLocations[x].State == TouchLocationState.Released)
                        {
                            if (upgradeBox.Contains(touchLocations[x].Position.ToPoint()))
                            {
                                // continue of we cant afford this upgrade
                                if (Level.SelectedObject.UpgradeList[i].Cost > Level.Money)
                                {
                                    SoundManager.PlayUnavailableSound();
                                    continue;
                                }

                                Level.SelectedObject.UpgradeList[i].Click();

                                // pay upgrade cost
                                Level.Money -= Level.SelectedObject.UpgradeList[i].Cost;

                                // play buy sound here
                                SoundManager.PlayUpgradeSound();

                                // insert next upgrade if present
                                if (Level.SelectedObject.UpgradeList[i].NextUgrade != null)
                                {
                                    Level.SelectedObject.UpgradeList.Insert(i, Level.SelectedObject.UpgradeList[i].NextUgrade);

                                    // remove clicked upgrade
                                    if (Level.SelectedObject.UpgradeList.Count > i + 1)
                                        Level.SelectedObject.UpgradeList.RemoveAt(i + 1);
                                }
                                else
                                // remove clicked upgrade
                                if (Level.SelectedObject.UpgradeList.Count > i)
                                    Level.SelectedObject.UpgradeList.RemoveAt(i);
                            }
                        }
                        else
                        {
                            if (upgradeBox.Contains(touchLocations[x].Position.ToPoint()))
                            {
                                Level.SelectedObject.UpgradeList[i].State = Objects.UpgradeState.Pressed;
                            }
                        }
                    }
                }
            }
        }
    }
}