using System.Reflection;
using BumpCombat.Combat;
using BumpCombat.Defense.Comparison;
using BumpCombat.Player;
using NUnit.Framework;
using UnityEditor;
using UnityEngine;

namespace BumpCombat.Tests
{
    public sealed class Defense25DComparisonTests
    {
        [Test]
        public void IndependentSceneExists()
        {
            Assert.That(AssetDatabase.LoadAssetAtPath<SceneAsset>(
                "Assets/_Project/Scenes/Defense25DComparison.unity"), Is.Not.Null);
        }

        [TestCase(false, .85f, 38.0625f / 32f, 15.03125f / 32f, 3)]
        [TestCase(true, 1.25f, 46f / 32f, 18f / 32f, 5)]
        public void CyclonePreservesAuthoredEllipseAndTickSchedule(
            bool charged, float range, float radiusX, float radiusZ, int count)
        {
            Vector2 radii = CycloneGeometry.Radii(range, charged);
            Assert.That(radii.x, Is.EqualTo(radiusX).Within(.00001f));
            Assert.That(radii.y, Is.EqualTo(radiusZ).Within(.00001f));
            Assert.That(CycloneGeometry.ScheduledHitCount(charged ? .65f : .36f, .14f), Is.EqualTo(count));
            MethodInfo original = typeof(ActiveArtifactController).GetMethod(
                "GetCycloneHitRadii", BindingFlags.NonPublic | BindingFlags.Static);
            Assert.That(original.Invoke(null, new object[] { range, charged }), Is.EqualTo(radii));
        }

        [Test]
        public void EllipseUsesBodyEdgeRatherThanGroundCenterOrSphere()
        {
            Vector2 radii = CycloneGeometry.Radii(.85f, false);
            Vector2 bodyCenter = new(0f, radii.y + .2f);
            Vector2 Closest(Vector2 point) => bodyCenter + Vector2.ClampMagnitude(point - bodyCenter, .24f);
            Assert.That(CycloneGeometry.Overlaps(Vector2.zero, radii, Closest), Is.True);
            bodyCenter.y = radii.y + .3f;
            Assert.That(CycloneGeometry.Overlaps(Vector2.zero, radii, Closest), Is.False);
        }

        [Test]
        public void ViewportCentersIntegerUpscaleAndRejectsLetterbox()
        {
            Rect rect = Defense25DView.GetViewport(1920, 1080);
            Assert.That(rect, Is.EqualTo(new Rect(0, 0, 1920, 1080)));
            rect = Defense25DView.GetViewport(1399, 799);
            Assert.That(rect.width, Is.EqualTo(1280));
            Assert.That(rect.height, Is.EqualTo(720));
            Assert.That(rect.Contains(Vector2.zero), Is.False);
        }

        [Test]
        public void SharedBumpDamageStillFloorsOnlyAtFinalBoundary()
        {
            Assert.That(DamageCalculator.FinalizeDamage(
                BumpCombatMath.ApplySideMultiplier(10.9f, HitSide.Side)), Is.EqualTo(13));
            Assert.That(DamageCalculator.FinalizeDamage(
                BumpCombatMath.ApplySideMultiplier(10f, HitSide.Back)), Is.EqualTo(15));
        }
    }
}