using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Terraria;
using Terraria.ID;
using Terraria.ModLoader;
using System;
using System.Collections.Generic;

namespace GuidosMod.items.weapons
{
	public class TrueNightSky : ModItem
	{
		public override void SetStaticDefaults()
		{
			DisplayName.SetDefault("True Night Sky");
            Tooltip.SetDefault("A blade forged from the essence of 2000 dark souls.");
		}

		public override void SetDefaults()
		{
			item.damage = 119;
			item.melee = true;
			item.width = 50;
			item.height = 76;
			item.useTime = 12;
			item.useAnimation = 12;
			item.useStyle = 1;
			item.knockBack = 5;
			item.value = 10000;
			item.rare = 11;
			item.UseSound = SoundID.Item88;
			item.shootSpeed = 35f;
			item.autoReuse = true;
			item.useTurn = true;
		}


		public override void AddRecipes()
		{
	ModRecipe recipe = new ModRecipe(mod);
        recipe.AddIngredient(null, "TheNightSky", 1);
        recipe.AddIngredient(ItemID.SoulofNight, 2000);
        recipe.AddTile(TileID.DemonAltar);
        recipe.SetResult(this);
        recipe.AddRecipe();
		}
		        public override void OnHitNPC(Player player, NPC target, int damage, float knockBack, bool crit)
        {

            player.AddBuff(BuffID.Wrath, 600);
	    target.AddBuff(39, 420);
        }

public override void MeleeEffects(Player player, Rectangle hitbox)
        {
            Vector2 dustPosition;
            Vector2 dustVelocity = CalculateDustVelocityNormal(player, -1.57f); //send dust flying backwards of blade vlocity
            for (int i = 0; i < 10; i++)
            {
                float dist = Main.rand.NextFloat();
                dustPosition = CalculateDustPosition(player, item, 4, dist, 4f);
                int d = Terraria.Dust.NewDust(dustPosition, 0, 0,
                    27, player.velocity.X, player.velocity.Y, 0, 0, 1.3f - 0.8f * dist);
                Main.dust[d].velocity += dustVelocity * 5 * dist;
            }
        }

        private static Vector2 CalculateDustPosition(Player player, Item item, int handleLength, float distNormal, float scaleDisplace)
        {
            handleLength += 16;
            int length = (int)(item.width * 1.414f * item.scale) - handleLength;
            float cosRot = (float)Math.Cos(player.itemRotation - 0.78f * player.direction * player.gravDir);
            float sinRot = (float)Math.Sin(player.itemRotation - 0.78f * player.direction * player.gravDir);
            if (length < 1) length = 1;
            return new Vector2(
                        (float)(player.itemLocation.X + (handleLength + length * distNormal) * cosRot * player.direction) - scaleDisplace,
                        (float)(player.itemLocation.Y + (handleLength + length * distNormal) * sinRot * player.direction) - scaleDisplace);
        }
        private static Vector2 CalculateDustVelocityNormal(Player player, float angleOffset)
        {
            float cosRot = (float)Math.Cos(player.itemRotation - (0.78f - angleOffset) * player.direction * player.gravDir);
            float sinRot = (float)Math.Sin(player.itemRotation - (0.78f - angleOffset) * player.direction * player.gravDir);
            return new Vector2(
                        (float)(cosRot * player.direction),
                        (float)(sinRot * player.direction));
        }
 public override void HoldItem(Player player)
        {
            player.armorPenetration += 20;
        }

	}
}