using System;
using Sandbox;

[Perk( Rarity.Mythic, locked: true, minUnlocksReq: 1, alwaysOfferDebug: false, IncludedCategories = new[] { PerkCategory.ArcBullets })]
public class PerkBulletArcStill : Perk
{
	private enum Mod { ArcBulletDamageAdd, ArcBulletSpeedMult };


	static PerkBulletArcStill()
	{
		Register<PerkBulletArcStill>(
			name: "Lob Shots",
			imagePath: "textures/icons/vector/bullet_lob.png",
			description: level => $"While not moving, lob your bullet-icon\nwith +{GetValue( level, Mod.ArcBulletDamageAdd ).ToString( "0.#" )} bullet-icon dmg",
			upgradeDescription: level => $"While not moving, lob your bullet-icon\nwith +{GetValue( level - 1, Mod.ArcBulletDamageAdd ).ToString( "0.#" )}→{GetValue( level, Mod.ArcBulletDamageAdd ).ToString( "0.#" )} bullet-icon dmg"
		);
	}

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

		ShouldUpdate = true;
		DisplayCooldownColor = new Color( 0.75f, 0.2f, 0.9f, 0.8f );
	}

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

		Player.Modify( this, PlayerStat.ArcBulletsStill, 1f, ModifierType.Add );
		Player.Modify( this, PlayerStat.BulletArcHeight, 160f, ModifierType.Add );
		
		// todo: need to update damage/speed stats on stats screen?
		Player.Modify( this, PlayerStat.ArcBulletDamageAdd, GetValue( Level, Mod.ArcBulletDamageAdd ), ModifierType.Add );
		Player.Modify( this, PlayerStat.ArcBulletSpeedMult, GetValue( Level, Mod.ArcBulletSpeedMult ), ModifierType.Mult );
	}

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

		IconScale = 1f + (Utils.FastSin( RealTime.Now * 15f ) * 0.025f) * (Player.IsMoving ? 0f : 1f);
		DisplayCooldown = Player.IsMoving ? 0f : 1f;
	}

	private static float GetValue( int level, Mod mod, bool isPercent = false )
	{
		switch ( mod )
		{
			case Mod.ArcBulletDamageAdd:
			default:
				return 1f * level;
			case Mod.ArcBulletSpeedMult:
				return isPercent
					? 25f
					: 1f - (0.25f);
		}
	}

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

		if ( Player.IsMoving )
			return;

		IconScale = Game.Random.Float( 1.05f, 1.1f );
		IconAngleOffset = Game.Random.Float( 9f, 12f ) * (Game.Random.Int( 0, 1 ) == 0 ? -1f : 1f);
	}
}