using NUnit.Framework;
using UnityEngine;
using YachtDice.Modifiers;
using YachtDice.Scoring;

namespace YachtDice.Tests
{

public sealed class ModifierEffectTests
{
    private static ModifierData CreateData(
        ModifierEffectType effectType, float effectValue,
        int dieValue = 0, ModifierScope scope = ModifierScope.SelectedCategory)
    {
        return ModifierData.CreateForTest("test", scope, effectType, effectValue, dieValue);
    }

    [Test]
    public void AddPerDieValue_CountsMatchingDice()
    {
        var data = CreateData(ModifierEffectType.AddPerDieValue, 10f, dieValue: 1);
        var result = ScoreResult.Create(5, new[] { 1, 1, 3, 4, 1 }, YachtCategory.Ones);

        ModifierEffect.Apply(data, ref result);

        Assert.AreEqual(30, result.FlatBonus);
    }

    [Test]
    public void AddPerDieValue_ZeroTarget_CountsAllDice()
    {
        var data = CreateData(ModifierEffectType.AddPerDieValue, 2f, dieValue: 0);
        var result = ScoreResult.Create(10, new[] { 1, 2, 3, 4, 5 }, YachtCategory.Chance);

        ModifierEffect.Apply(data, ref result);

        Assert.AreEqual(10, result.FlatBonus);
    }

    [Test]
    public void AddPerDieValue_NoMatches_ZeroBonus()
    {
        var data = CreateData(ModifierEffectType.AddPerDieValue, 10f, dieValue: 6);
        var result = ScoreResult.Create(5, new[] { 1, 2, 3, 4, 5 }, YachtCategory.Chance);

        ModifierEffect.Apply(data, ref result);

        Assert.AreEqual(0, result.FlatBonus);
    }

    [Test]
    public void AddFlatToFinalScore_AddsFlat()
    {
        var data = CreateData(ModifierEffectType.AddFlatToFinalScore, 15f);
        var result = ScoreResult.Create(25, new[] { 3, 3, 2, 2, 2 }, YachtCategory.FullHouse);

        ModifierEffect.Apply(data, ref result);

        Assert.AreEqual(15, result.FlatBonus);
    }

    [Test]
    public void MultiplyPerDieValue_MultipliesPerMatch()
    {
        var data = CreateData(ModifierEffectType.MultiplyPerDieValue, 2f, dieValue: 6);
        var result = ScoreResult.Create(18, new[] { 6, 6, 6, 1, 2 }, YachtCategory.Sixes);

        ModifierEffect.Apply(data, ref result);

        Assert.AreEqual(8f, result.Multiplier); // 1 * 2 * 2 * 2 = 8
    }

    [Test]
    public void MultiplyPerDieValue_NoMatches_MultiplierUnchanged()
    {
        var data = CreateData(ModifierEffectType.MultiplyPerDieValue, 3f, dieValue: 6);
        var result = ScoreResult.Create(10, new[] { 1, 2, 3, 4, 5 }, YachtCategory.Chance);

        ModifierEffect.Apply(data, ref result);

        Assert.AreEqual(1f, result.Multiplier);
    }

    [Test]
    public void MultiplyFinalScore_MultipliesOnce()
    {
        var data = CreateData(ModifierEffectType.MultiplyFinalScore, 1.5f);
        var result = ScoreResult.Create(50, new[] { 6, 6, 6, 6, 6 }, YachtCategory.Yacht);

        ModifierEffect.Apply(data, ref result);

        Assert.AreEqual(1.5f, result.Multiplier, 0.001f);
    }
}
}