using Sandbox;
using System;
using System.Numerics;

[Perk( Rarity.Unique, curse: true, alwaysOfferDebug: false, IncludedCategories = new[] { PerkCategory.SelfDmg })]
public class CurseArenaBoundsHurt : Perk
{
	private enum Mod { Dmg };

	private TimeSince _timeSinceDmg;


	static CurseArenaBoundsHurt()
	{
		Register<CurseArenaBoundsHurt>(
			name: "Sharp Fence",
			imagePath: "textures/icons/vector/curse_arena_bounds_hurt.png",
			description: level => $"-{GetValue( level, Mod.Dmg )} hp when you\ntouch the fence"
		);
	}

	public override void Start()
	{
		base.Start();

		ShouldUpdate = true;
	}

	public override void Refresh()
	{
		base.Refresh();

	}

	public override void Update( float dt )
	{
		base.Update( dt );

		float cooldown = GetValue( Level, Mod.Dmg );

		if ( _timeSinceDmg > 0.5f && !Player.IsInTheAir )
		{
			var pos = Player.Position2D;
			var amount = 1.05f;
			var minX = Manager.Instance.BOUNDS_MIN.x - Player.BoundsExpand + Player.Radius * amount;
			var maxX = Manager.Instance.BOUNDS_MAX.x + Player.BoundsExpand - Player.Radius * amount;
			var minY = Manager.Instance.BOUNDS_MIN.y - Player.BoundsExpand + Player.Radius * amount;
			var maxY = Manager.Instance.BOUNDS_MAX.y + Player.BoundsExpand - Player.Radius * amount;

			if ( pos.x > maxX && pos.y > maxY )			GetHurt( new Vector2( -1f, -1f ) );
			else if ( pos.x > maxX && pos.y < minY )	GetHurt( new Vector2( -1f, 1f ) );
			else if ( pos.x < minX && pos.y > maxY )	GetHurt( new Vector2( 1f, -1f ) );
			else if ( pos.x < minX && pos.y < minY )	GetHurt( new Vector2( 1f, -1f ) );
			else if ( pos.x > maxX )					GetHurt( new Vector2( -1f, 0f ) );
			else if ( pos.x < minX )					GetHurt( new Vector2( 1f, 0f ) );
			else if ( pos.y > maxY )					GetHurt( new Vector2( 0f, -1f ) );
			else if ( pos.y < minY )					GetHurt( new Vector2( 0f, 1f ) );
		}
	}

	private static float GetValue( int level, Mod mod, bool isPercent = false )
	{
		switch ( mod )
		{
			case Mod.Dmg:
			default:
				return 20f;
		}
	}

	void GetHurt( Vector2 dir )
	{
		Player.Damage( GetValue( Level, Mod.Dmg), DamageType.Self, Player.Position2D, dir, upwardAmount: 0f, force: 0f, ragdollForce: 1f, enemySource: null, enemyType: EnemyType.None );

		Player.Velocity += dir.Normal * Game.Random.Float( 600f, 800f );

		_timeSinceDmg = 0f;

		HighlightColor = new Color( 0.85f, 0.2f, 1f );
		HighlightDuration = 0.5f;
		HighlightOpacity = 4f;
		Highlight();

		Manager.Instance.PlaySfxNearbyRpc( "fence.hurt", Player.Position2D, pitch: Game.Random.Float( 0.9f, 1.1f ), volume: 2f, maxDist: 400f );

		IconScale = Game.Random.Float( 1.2f, 1.3f );
		IconAngleOffset = Game.Random.Float( 10f, 20f ) * (Game.Random.Int( 0, 1 ) == 0 ? -1f : 1f);
	}
}