using Godot;
using GdUnit4;
using static GdUnit4.Assertions;
using Movementtests.interfaces;
using Movementtests.systems.damage;

namespace Movementtests.tests;

[TestSuite, RequireGodotRuntime]
public class EnemyUnitTest
{
    [TestCase]
    public void ComputeDamage_NoComponent_ReturnsZero()
    {
        var enemy = new Enemy();
        var input = new DamageRecord(Vector3.Zero, new RDamage(10.0f, EDamageTypes.Normal));

        var result = enemy.ComputeDamage(input);
        AssertFloat(result.Damage.DamageDealt).IsEqual(0.0f);
    }

    [TestCase]
    public void TakeDamage_WithCDamageable_AggregatesDamage()
    {
        var enemy = new Enemy();
        var cDamage = new CDamageable();
        cDamage.DamageModifiers = new[]
        {
            new RDamageModifier(EDamageTypes.Normal, 1.0f),
            new RDamageModifier(EDamageTypes.Normal, 2.0f)
        };
        enemy.CDamageable = cDamage;

        var input = new DamageRecord(Vector3.Zero, new RDamage(10.0f, EDamageTypes.Normal));
        var result = enemy.TakeDamage(input);
        AssertFloat(result.Damage.DamageDealt).IsEqual(30.0f);
    }

    [TestCase]
    public void ReduceHealth_WithCHealth_Decreases()
    {
        var enemy = new Enemy();
        var health = new CHealth { RHealth = new RHealth(100.0f), CurrentHealth = 100.0f };
        enemy.CHealth = health;

        var input = new DamageRecord(Vector3.Zero, new RDamage(25.0f, EDamageTypes.Normal));
        var record = enemy.ReduceHealth(enemy, input);

        AssertFloat(health.CurrentHealth).IsEqual(75.0f);
        AssertFloat(record.CurrentHealth).IsEqual(75.0f);
    }

    [TestCase]
    public void Knockback_Register_And_Compute()
    {
        var enemy = new Enemy();
        var cKnock = new CKnockback { RKnockback = new RKnockback(1.0f) };
        enemy.CKnockback = cKnock;
        enemy.GlobalPosition = Vector3.Zero;
        cKnock.GlobalPosition = Vector3.Zero;

        var dmg = new DamageRecord(new Vector3(5, 0, 0), new RDamage(0, EDamageTypes.Normal));
        var krec = new KnockbackRecord(dmg, 2.0f);
        enemy.RegisterKnockback(krec);

        var k = enemy.ComputeKnockback();
        AssertVector(k).IsEqual(new Vector3(-2, 0, 0));
    }

    [TestCase]
    public void Unstun_ResetsFlag()
    {
        var enemy = new Enemy();
        enemy.IsStunned = true;
        enemy.Unstun();
        AssertBool(enemy.IsStunned).IsFalse();
    }
}