using NUnit.Framework;

namespace AibisDream.SystemEditor.Tests
{
    public sealed class TextSpeedSettingsTests
    {
        [SetUp]
        public void SetUp()
        {
            TextSpeedSettings.Reset();
        }

        [TearDown]
        public void TearDown()
        {
            TextSpeedSettings.Reset();
        }

        [TestCase("0.5", TextSpeedSettings.SlowMultiplier, TextSpeedSettings.SlowValue)]
        [TestCase("0.50", TextSpeedSettings.SlowMultiplier, TextSpeedSettings.SlowValue)]
        [TestCase("1", TextSpeedSettings.DefaultMultiplier, TextSpeedSettings.DefaultValue)]
        [TestCase("1.0", TextSpeedSettings.DefaultMultiplier, TextSpeedSettings.DefaultValue)]
        [TestCase("3", TextSpeedSettings.FastMultiplier, TextSpeedSettings.FastValue)]
        [TestCase("3.0", TextSpeedSettings.FastMultiplier, TextSpeedSettings.FastValue)]
        public void TryNormalize_SupportedNumericValue_ReturnsCanonicalValue(
            string rawValue,
            float expectedMultiplier,
            string expectedCanonicalValue)
        {
            var result = TextSpeedSettings.TryNormalize(
                rawValue,
                out var multiplier,
                out var canonicalValue);

            Assert.That(result, Is.True);
            Assert.That(multiplier, Is.EqualTo(expectedMultiplier));
            Assert.That(canonicalValue, Is.EqualTo(expectedCanonicalValue));
        }

        [TestCase(null)]
        [TestCase("")]
        [TestCase("   ")]
        [TestCase("invalid")]
        [TestCase("NaN")]
        [TestCase("Infinity")]
        [TestCase("-1")]
        [TestCase("0")]
        [TestCase("2")]
        [TestCase("4")]
        public void TryNormalize_InvalidOrUnsupportedValue_ReturnsDefault(
            string rawValue)
        {
            var result = TextSpeedSettings.TryNormalize(
                rawValue,
                out var multiplier,
                out var canonicalValue);

            Assert.That(result, Is.False);
            Assert.That(multiplier, Is.EqualTo(TextSpeedSettings.DefaultMultiplier));
            Assert.That(canonicalValue, Is.EqualTo(TextSpeedSettings.DefaultValue));
        }

        [Test]
        public void Reset_AfterApplyingFastValue_RestoresDefault()
        {
            Assert.That(TextSpeedSettings.ApplyStoredValue("3"), Is.True);
            Assert.That(TextSpeedSettings.CurrentMultiplier, Is.EqualTo(TextSpeedSettings.FastMultiplier));

            TextSpeedSettings.Reset();

            Assert.That(TextSpeedSettings.CurrentMultiplier, Is.EqualTo(TextSpeedSettings.DefaultMultiplier));
            Assert.That(TextSpeedSettings.CurrentCanonicalValue, Is.EqualTo(TextSpeedSettings.DefaultValue));
        }
    }
}