using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System;

namespace Barotrauma
{
    partial class WayPoint : MapEntity
    {
        private static Texture2D iconTexture;
        private const int IconSize = 32;
        private static int[] iconIndices = { 3, 0, 1, 2 };

        public override void Draw(SpriteBatch spriteBatch, bool editing, bool back = true)
        {
            if (!editing && !GameMain.DebugDraw) return;

            if (IsHidden()) return;

            //Rectangle drawRect =
            //    Submarine == null ? rect : new Rectangle((int)(Submarine.DrawPosition.X + rect.X), (int)(Submarine.DrawPosition.Y + rect.Y), rect.Width, rect.Height);

            Vector2 drawPos = Position;
            if (Submarine != null) drawPos += Submarine.DrawPosition;
            drawPos.Y = -drawPos.Y;

            Color clr = currentHull == null ? Color.Blue : Color.White;
            if (IsSelected) clr = Color.Red;
            if (isHighlighted) clr = Color.DarkRed;

            int iconX = iconIndices[(int)spawnType] * IconSize % iconTexture.Width;
            int iconY = (int)(Math.Floor(iconIndices[(int)spawnType] * IconSize / (float)iconTexture.Width)) * IconSize;

            int iconSize = ConnectedGap == null && Ladders == null ? IconSize : (int)(IconSize * 1.5f);

            spriteBatch.Draw(iconTexture,
                new Rectangle((int)(drawPos.X - iconSize / 2), (int)(drawPos.Y - iconSize / 2), iconSize, iconSize),
                new Rectangle(iconX, iconY, IconSize, IconSize), clr);

            //GUI.DrawRectangle(spriteBatch, new Rectangle(drawRect.X, -drawRect.Y, rect.Width, rect.Height), clr, true);

            //GUI.SmallFont.DrawString(spriteBatch, Position.ToString(), new Vector2(Position.X, -Position.Y), Color.White);

            foreach (MapEntity e in linkedTo)
            {
                GUI.DrawLine(spriteBatch,
                    drawPos,
                    new Vector2(e.DrawPosition.X, -e.DrawPosition.Y),
                    Color.Green);
            }
        }

        private bool IsHidden()
        {
            if (spawnType == SpawnType.Path)
            {
                return (!GameMain.DebugDraw && !ShowWayPoints);
            }
            else
            {
                return (!GameMain.DebugDraw && !ShowSpawnPoints);
            }
        }

        public override void UpdateEditing(Camera cam)
        {
            if (editingHUD == null || editingHUD.UserData != this)
            {
                editingHUD = CreateEditingHUD();
            }

            editingHUD.Update((float)Timing.Step);

            if (PlayerInput.LeftButtonClicked())
            {
                Vector2 position = cam.ScreenToWorld(PlayerInput.MousePosition);

                foreach (MapEntity e in mapEntityList)
                {
                    if (e.GetType() != typeof(WayPoint)) continue;
                    if (e == this) continue;

                    if (!Submarine.RectContains(e.Rect, position)) continue;

                    linkedTo.Add(e);
                    e.linkedTo.Add(this);
                }
            }
        }

        public override void DrawEditing(SpriteBatch spriteBatch, Camera cam)
        {
            if (editingHUD != null) editingHUD.Draw(spriteBatch);
        }

        private bool ChangeSpawnType(GUIButton button, object obj)
        {
            GUITextBlock spawnTypeText = button.Parent as GUITextBlock;

            spawnType += (int)button.UserData;

            if (spawnType > SpawnType.Cargo) spawnType = SpawnType.Human;
            if (spawnType < SpawnType.Human) spawnType = SpawnType.Cargo;

            spawnTypeText.Text = spawnType.ToString();

            return true;
        }

        private bool EnterIDCardDesc(GUITextBox textBox, string text)
        {
            IdCardDesc = text;
            textBox.Text = text;
            textBox.Color = Color.Green;

            textBox.Deselect();

            return true;
        }
        private bool EnterIDCardTags(GUITextBox textBox, string text)
        {
            IdCardTags = text.Split(',');
            textBox.Text = text;
            textBox.Color = Color.Green;

            textBox.Deselect();

            return true;
        }

        private bool EnterAssignedJob(GUITextBox textBox, string text)
        {
            string trimmedName = text.ToLowerInvariant().Trim();
            assignedJob = JobPrefab.List.Find(jp => jp.Name.ToLowerInvariant() == trimmedName);

            if (assignedJob != null && trimmedName != TextManager.Get("None").ToLowerInvariant())
            {
                textBox.Color = Color.Green;
                textBox.Text = (assignedJob == null) ? TextManager.Get("None") : assignedJob.Name;
            }

            textBox.Deselect();

            return true;
        }

        private bool TextBoxChanged(GUITextBox textBox, string text)
        {
            textBox.Color = Color.Red;

            return true;
        }

        private GUIComponent CreateEditingHUD(bool inGame = false)
        {
            int width = 500;
            int height = spawnType == SpawnType.Path ? 100 : 200;
            int x = GameMain.GraphicsWidth / 2 - width / 2, y = 10;

            editingHUD = new GUIFrame(new Rectangle(x, y, width, height));
            editingHUD.Padding = new Vector4(10, 10, 20, 0);
            editingHUD.UserData = this;

            if (spawnType == SpawnType.Path)
            {
                new GUITextBlock(new Rectangle(0, 0, 100, 20), TextManager.Get("Editing")+" " +TextManager.Get("Waypoint"), "", editingHUD);
                new GUITextBlock(new Rectangle(0, 20, 100, 20), TextManager.Get("LinkWaypoint"), "", editingHUD);
            }
            else
            {
                new GUITextBlock(new Rectangle(0, 0, 100, 20), TextManager.Get("Editing") + " " + TextManager.Get("Spawnpoint"), "", editingHUD);
                new GUITextBlock(new Rectangle(0, 25, 100, 20), TextManager.Get("SpawnType") + ": ", "", editingHUD);

                var spawnTypeText = new GUITextBlock(new Rectangle(0, 25, 200, 20), spawnType.ToString(), "", Alignment.Right, Alignment.TopLeft, editingHUD);

                var button = new GUIButton(new Rectangle(-30, 0, 20, 20), "-", Alignment.Right, "", spawnTypeText);
                button.UserData = -1;
                button.OnClicked = ChangeSpawnType;

                button = new GUIButton(new Rectangle(0, 0, 20, 20), "+", Alignment.Right, "", spawnTypeText);
                button.UserData = 1;
                button.OnClicked = ChangeSpawnType;

                y = 40 + 20;

                new GUITextBlock(new Rectangle(0, y, 100, 20), TextManager.Get("IDCardDescription"), "", Alignment.TopLeft, Alignment.CenterLeft, editingHUD, false, GUI.SmallFont);
                GUITextBox propertyBox = new GUITextBox(new Rectangle(150, y, 0, 20), "", editingHUD);
                propertyBox.MaxTextLength = 150;
                propertyBox.Text = idCardDesc;
                propertyBox.OnEnterPressed = EnterIDCardDesc;
                propertyBox.OnTextChanged = TextBoxChanged;
                propertyBox.ToolTip = TextManager.Get("IDCardDescriptionTooltip");

                y = y + 30;

                new GUITextBlock(new Rectangle(0, y, 100, 20), TextManager.Get("IDCardTags"), "", Alignment.TopLeft, Alignment.CenterLeft, editingHUD, false, GUI.SmallFont);
                propertyBox = new GUITextBox(new Rectangle(150, y, 0, 20), "", editingHUD);
                propertyBox.MaxTextLength = 60;
                propertyBox.Text = string.Join(", ", idCardTags);
                propertyBox.OnEnterPressed = EnterIDCardTags;
                propertyBox.OnTextChanged = TextBoxChanged;
                propertyBox.ToolTip = TextManager.Get("IDCardTagsTooltip");

                y = y + 30;

                new GUITextBlock(new Rectangle(0, y, 100, 20), TextManager.Get("SpawnpointJobs"), "", Alignment.TopLeft, Alignment.CenterLeft, editingHUD, false, GUI.SmallFont);
                propertyBox = new GUITextBox(new Rectangle(150, y, 0, 20), "", editingHUD);
                propertyBox.MaxTextLength = 60;
                propertyBox.Text = (assignedJob == null) ? "None" : assignedJob.Name;
                propertyBox.OnEnterPressed = EnterAssignedJob;
                propertyBox.OnTextChanged = TextBoxChanged;
                propertyBox.ToolTip = TextManager.Get("SpawnpointJobsTooltip");

            }
            
            y = y + 30;

            return editingHUD;
        }        
    }
}