using Decimation.Content.Buffs.Debuffs;
using Decimation.Content.Projectiles;
using Decimation.Content.Projectiles.NPC;
using Decimation.Content.Tiles.ShrineoftheMoltenOne;
using Decimation.Lib.Util;
using Microsoft.Xna.Framework;
using Terraria;
using Terraria.ID;
using Terraria.ModLoader;

namespace Decimation.Content.NPCs
{
    internal class LivingMagma : ModNPC
    {
        private static readonly int SpitInterval = 60;
        private static readonly int SpitDuration = 240;

        private int SpitCounter { get; set; }
        private int SpittingCounter { get; set; } = SpitDuration;
        private bool Spitting { get; set; }
        private bool HasSpit { get; set; }

        private Vector2 MouthPosition => npc.Center + new Vector2(npc.width / 2f * npc.direction, 0);

        public override void SetStaticDefaults()
        {
            DisplayName.SetDefault("Living Magma");
            Main.npcFrameCount[npc.type] = 3;
        }

        public override void SetDefaults()
        {
            npc.width = 40;
            npc.height = 28;
            npc.aiStyle = 1;
            npc.damage = 50;
            npc.defense = 18;
            npc.lifeMax = 630;
            npc.HitSound = SoundID.NPCHit1;
            npc.DeathSound = SoundID.NPCDeath1;
            npc.alpha = 55;
            npc.value = 400f;
            npc.scale = 1.1f;
            npc.buffImmune[24] = true;
            npc.buffImmune[74] = true;
            npc.lavaImmune = true;
            npc.knockBackResist = 0.8f;
            aiType = NPCID.ToxicSludge;
            animationType = NPCID.ToxicSludge;
            npc.lavaImmune = true;
            npc.buffImmune[BuffID.OnFire] = true;
            npc.buffImmune[BuffID.Burning] = true;
        }

        public override void AI()
        {
            if (npc.velocity.Length() > 0) HasSpit = false;
            if (SpitCounter >= SpitInterval && !HasSpit && Main.expertMode && npc.velocity.Length() == 0f &&
                Main.rand.NextBool(5)) Spitting = true;

            if (Spitting)
            {
                if (SpittingCounter == 60)
                {
                    Projectile.NewProjectile(MouthPosition, new Vector2(8 * npc.direction, -2),
                        ModContent.ProjectileType<MagmaBall>(),
                        45, 4);
                    Main.PlaySound(SoundID.NPCDeath13, MouthPosition);

                    HasSpit = true;
                }

                if (SpittingCounter-- < 0)
                {
                    Spitting = false;
                    SpittingCounter = SpitDuration;
                }
            }
            else
            {
                base.AI();
            }

            if (SpitCounter++ > SpitInterval) SpitCounter = 0;

            Lighting.AddLight(npc.Center, LightingUtils.Rgb255ToRgb1(255, 155, 48));
        }

        public override void HitEffect(int hitDirection, double damage)
        {
            Main.LocalPlayer.AddBuff(ModContent.BuffType<Singed>(), 600);
        }

        public override float SpawnChance(NPCSpawnInfo spawnInfo)
        {
            if (!Main.hardMode) return 0;

            int x = (int) Main.LocalPlayer.position.X / 16;
            int y = (int) Main.LocalPlayer.position.Y / 16;

            int validBlockCount = 0;
            for (int i = -50 + x; i <= 50 + x; i++)
            for (int j = -50 + y; j <= 50 + y; j++)
                if (i >= 0 && i <= Main.maxTilesX && j >= 0 && j <= Main.maxTilesY)
                    if (Main.tile[i, j].type == ModContent.TileType<ShrineBrick>() ||
                        Main.tile[i, j].type == ModContent.TileType<LockedShrineDoor>() ||
                        Main.tile[i, j].type == ModContent.TileType<ShrineDoorClosed>() ||
                        Main.tile[i, j].type == ModContent.TileType<ShrineDoorOpened>() ||
                        Main.tile[i, j].type == ModContent.TileType<RedHotSpike>())
                        validBlockCount++;

            if (validBlockCount >= 15)
                return SpawnCondition.Underworld.Chance * 2;
            return 0;
        }

        public override bool CheckDead()
        {
            bool dead = base.CheckDead();

            if (dead)
            {
                int tinySlimeAmount = Main.rand.Next(2, 4);
                for (int i = 0; i < tinySlimeAmount; i++)
                    NPC.NewNPC((int) npc.Center.X, (int) npc.Center.Y, ModContent.NPCType<TinyLivingMagma>());
            }

            return dead;
        }
    }
}