using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using Godot;
using Godot.Bridge;
using Godot.Collections;
using Godot.NativeInterop;

[ScriptPath("res://Scripts/Entities/Enemy.cs")]
public partial class Enemy : Entity
{
	public enum MovementType
	{
		None,
		Wander,
		LoopAround,
		BackAndForth,
		Circle
	}

	public enum Respawn
	{
		No,
		NoMoney,
		HalfMoney
	}

	public enum State
	{
		Unaware,
		Noticed,
		Chase
	}

	[Export(PropertyHint.None, "")]
	private MovementType movementType = MovementType.Wander;

	[Export(PropertyHint.None, "")]
	private Vector2 circleMulti = Vector2.One;

	[Export(PropertyHint.None, "")]
	private float radius = 120f;

	[Export(PropertyHint.None, "")]
	private float moveTime = 100f;

	[Export(PropertyHint.None, "")]
	private Array<IDs> additionalEnemies;

	[Export(PropertyHint.None, "")]
	private StringName battleMes = "Test";

	[Export(PropertyHint.None, "")]
	public SaveFile.Flags flag;

	[Export(PropertyHint.None, "")]
	public SaveFile.Flags spawn = SaveFile.Flags.None;

	[Export(PropertyHint.None, "")]
	public SaveFile.Flags despawn = SaveFile.Flags.None;

	[Export(PropertyHint.None, "")]
	private Node2D[] points;

	[Export(PropertyHint.None, "")]
	private int current;

	[Export(PropertyHint.None, "")]
	public Respawn respawnType;

	[Export(PropertyHint.None, "")]
	private bool smooth = true;

	[Export(PropertyHint.None, "")]
	private bool immuneToWater;

	private static readonly AudioStream noticedSound = GD.Load<AudioStream>("res://Audio/Sounds/snd_b.wav");

	private Vector2 last;

	private Vector2 next;

	private State state;

	private float cooldown = 180f;

	private float noticeCD;

	private float circleState;

	private bool back;

	public static readonly StringName waterTag = "WaterBullet";

	public override void _EnterTree()
	{
		base._EnterTree();
		if ((SaveFile.current.flags.Contains(flag) && respawnType == Respawn.No) || !SaveFile.CanDo(new Array<SaveFile.Flags> { spawn }, new Array<SaveFile.Flags> { despawn }))
		{
			QueueFree();
			return;
		}
		if (movementType == MovementType.LoopAround || movementType == MovementType.BackAndForth)
		{
			cooldown = moveTime;
		}
		trigger.BodyEntered += OnTouch;
		trigger.AreaEntered += AreaEnter;
		trigger.CollisionMask = 129u;
		Node2D[] array = points;
		if (array != null && array.Length != 0)
		{
			last = points[current].GlobalPosition;
			int num = (int)Main.Repeat(current + 1, points.Length);
			next = points[num].GlobalPosition;
			current = num;
		}
	}

	public override void _Process(double delta)
	{
		if (TextSystem.instance.Visible)
		{
			return;
		}
		base._Process(delta);
		if (noticeCD > 0f)
		{
			noticeCD -= Main.deltaTime;
		}
		switch (state)
		{
		case State.Unaware:
			if (noticeCD > 0f)
			{
				break;
			}
			if (radius > 0f && base.GlobalPosition.DistanceTo(Player.instance.GlobalPosition) < radius)
			{
				cooldown = 30f;
				StopMoving(Animations.Idle);
				Emoticon(Emoticons.Exclaim);
				Audio.PlaySound(noticedSound);
				state = State.Noticed;
				break;
			}
			switch (movementType)
			{
			case MovementType.Circle:
			{
				circleState = Main.Repeat(circleState + Main.deltaTime, moveTime);
				float s = Mathf.DegToRad(Mathf.Lerp(0f, 360f, circleState / moveTime));
				Vector2 vector = startPos + new Vector2(Mathf.Cos(s) * circleMulti.X, Mathf.Sin(s) * circleMulti.Y);
				LookAt(vector);
				base.GlobalPosition = base.GlobalPosition.Lerp(vector, Main.deltaTime * 0.065f);
				break;
			}
			case MovementType.None:
				StopMoving();
				break;
			default:
				if (moving == null)
				{
					if (cooldown >= 0f)
					{
						currentAnim = Animations.Idle;
						cooldown -= Main.deltaTime;
					}
					else
					{
						DoAutoMove(startPos + new Vector2(Main.RandomRange(0f - radius, radius), Main.RandomRange(0f - radius, radius)) / 3f, 0.5f);
						cooldown = Main.RandomRange(120, 250);
					}
				}
				break;
			case MovementType.LoopAround:
			case MovementType.BackAndForth:
				base.Velocity = Vector2.Zero;
				if (cooldown >= 0f)
				{
					currentAnim = Animations.Walk;
					float weight = 1f - cooldown / moveTime;
					if (smooth)
					{
						weight = Mathf.SmoothStep(0f, 1f, weight);
					}
					if (radius < 10f)
					{
						base.GlobalPosition = last.Lerp(next, weight);
					}
					else
					{
						base.GlobalPosition = base.GlobalPosition.Lerp(last.Lerp(next, weight), Main.deltaTime * 0.1f);
					}
					cooldown -= Main.deltaTime;
					LookAt(next);
					break;
				}
				currentAnim = Animations.Idle;
				last = base.GlobalPosition;
				if (back)
				{
					current--;
					if (current <= 0)
					{
						back = false;
						current = 0;
					}
				}
				else
				{
					current++;
					if (current == points.Length)
					{
						if (movementType == MovementType.BackAndForth)
						{
							back = true;
							current -= 2;
							if (current < 0)
							{
								current = 0;
								back = false;
							}
						}
						else
						{
							current = 0;
						}
					}
				}
				next = points[current].GlobalPosition;
				cooldown = moveTime;
				break;
			}
			break;
		case State.Noticed:
			if (cooldown > 0f)
			{
				LookAt(Player.instance.GlobalPosition);
				cooldown -= Main.deltaTime;
			}
			else
			{
				state = State.Chase;
			}
			break;
		case State.Chase:
			if (base.GlobalPosition.DistanceTo(Player.instance.GlobalPosition) < radius && base.GlobalPosition.DistanceTo(startPos) < radius)
			{
				currentAnim = Animations.Walk;
				base.Velocity = base.GlobalPosition.DirectionTo(Player.instance.GlobalPosition) * baseSpeed;
				LookAt(Player.instance.GlobalPosition);
			}
			else
			{
				cooldown = 30f;
				noticeCD = 30f;
				state = State.Unaware;
				StopMoving(Animations.Idle);
			}
			break;
		}
	}

	public override void _PhysicsProcess(double delta)
	{
		if (!TextSystem.instance.Visible)
		{
			base._PhysicsProcess(delta);
		}
	}

	private void OnTouch(Node other)
	{
		if (other is Player && Room.current.lifeTime >= 60f && base.ProcessMode == ProcessModeEnum.Inherit)
		{
			additionalEnemies.Insert(0, id);
			Coroutine.Start(BattleDR.StartBattle(this, useOWBG: false, additionalEnemies.ToArray(), new List<Entity> { this }, battleMes));
		}
	}

	private void AreaEnter(Node other)
	{
		if (other.HasMeta(waterTag))
		{
			if (!immuneToWater)
			{
				Coroutine.Start(HitByWater(((Node2D)other).GlobalPosition.X < base.GlobalPosition.X), this);
				anim.ProcessMode = ProcessModeEnum.Always;
				anim.Play("Hurt");
				Audio.PlaySound("snd_bomb.wav");
				SetDeferred("process_mode", 4);
				immuneToWater = true;
			}
			Main.Particle("WaterBurst", other.GetParent<Node2D>().GlobalPosition, 1, null, localSpace: false);
			other.GetParent().QueueFree();
		}
	}

	private IEnumerator HitByWater(bool fromLeft)
	{
		Vector2 dir = new Vector2(fromLeft ? 1 : (-1), -1f) * 2f;
		for (float a = 0f; a < 300f; a += Main.deltaTime)
		{
			if (!GodotObject.IsInstanceValid(this))
			{
				yield break;
			}
			base.GlobalPosition += dir * Main.deltaTime;
			yield return null;
		}
		QueueFree();
	}

	}