using System.Collections.Generic;
using Decimation.Content.Projectiles.Item.Accessory.Trinity;
using Decimation.Lib.Util;
using Microsoft.Xna.Framework;
using Terraria;
using Terraria.ModLoader;
using Terraria.UI.Chat;

namespace Decimation.Content.Items.Accessories.Trinity
{
    public class Mind : TrinityAccessory
    {
        private static readonly float TrinityBeamSpeed = 8f;
        private static readonly int TrinityBeamDamage = 35;

        protected override string ItemName => "The Mind";

        protected override string ItemTooltip => "I know all...\n" +
                                                 "Increases block placement and mining speed by 10%\n" +
                                                 "Increases ranged and thrown damage by 10%\n" +
                                                 "Increases ranged and thrown critical hit chances by 10%\n" +
                                                 "Increases view range\n" +
                                                 "Melee attacks have 4% chance to fire a Trinity Beam";

        protected override void InitAccessory()
        {
            item.width = 10;
            item.height = 16;
            item.expert = true;
            item.rare = Rarity.Rainbow.GetRarityValue();
            item.value = Item.sellPrice(gold: 5);
        }

        public override void UpdateAccessory(Player player, bool hideVisual)
        {
            player.pickSpeed *= 1.10f;
            player.tileSpeed *= 1.10f;
            player.rangedDamage *= 1.10f;
            player.rangedCrit = (int) (player.rangedCrit * 1.10f);
            player.thrownDamage *= 1.10f;
            player.thrownCrit = (int) (player.thrownCrit * 1.10f);
            player.scope = true;

            base.UpdateAccessory(player, hideVisual);
        }

        public override void ModifyTooltips(List<TooltipLine> tooltips)
        {
            tooltips.Add(new TooltipLine(mod, "trinity", "Trinity")
            {
                overrideColor = ChatManager.WaveColor(Color.Yellow)
            });
        }

        public static void MindEffect(Player player, Entity target)
        {
            if (Main.rand.NextBool(25) && (player.HasEquippedAccessory(ModContent.ItemType<Mind>()) || player.HasEquippedAccessory(ModContent.ItemType<Trinity>())))
            {
                bool targetIsPlayer = target.GetType() == typeof(Player);

                // Target
                Entity projTarget = null;
                float lastDistance = float.MaxValue;
                if (targetIsPlayer)
                {
                    for (int p = 0; p < Main.player.Length; p++)
                    {
                        Player playerTarget = Main.player[p];
                        if (playerTarget != null)
                        {
                            float distance = playerTarget.Distance(target.position);
                            if (playerTarget.active && !playerTarget.dead &&
                                playerTarget.whoAmI != player.whoAmI && playerTarget.whoAmI != target.whoAmI &&
                                distance < 1000f && distance < lastDistance)
                            {
                                projTarget = playerTarget;
                                lastDistance = distance;
                            }
                        }
                    }
                }

                for (int n = 0; n < Main.npc.Length; n++)
                {
                    NPC npcTarget = Main.npc[n];
                    if (npcTarget != null)
                    {
                        float distance = npcTarget.Distance(target.position);
                        if (npcTarget.active && !npcTarget.friendly && (targetIsPlayer || npcTarget.whoAmI != target.whoAmI) &&
                            distance < 1000f && distance < lastDistance)
                        {
                            projTarget = npcTarget;
                            lastDistance = distance;
                        }
                    }
                }

                if (projTarget != null)
                {
                    Vector2 velocity = projTarget.Center - target.Center;
                    velocity.Normalize();
                    velocity *= TrinityBeamSpeed;

                    Projectile.NewProjectile(target.Center, velocity, ModContent.ProjectileType<TrinityBeam>(), TrinityBeamDamage, 2f,
                        player.whoAmI);
                }
            }
        }
    }

    class MindItemEffects : GlobalItem
    {
        public override void OnHitNPC(Item item, Player player, NPC target, int damage, float knockBack, bool crit)
        {
            Mind.MindEffect(player, target);
        }

        public override void OnHitPvp(Item item, Player player, Player target, int damage, bool crit)
        {
            Mind.MindEffect(player, target);
        }
    }
}