using UnityEngine;
using NUnit.Framework;
using LLM.Editor.Analysis;
using System.Collections.Generic;

namespace LLM.Editor.Tests.Unit
{
    [TestFixture]
    public class ProjectSettingsProviderTests
    {
        private ProjectSettingsProvider _provider;

        [SetUp]
        public void SetUp()
        {
            _provider = new ProjectSettingsProvider();
        }

        [Test]
        public void GetContext_WithValidSettings_ReturnsSettingsDictionary()
        {
            // Arrange
            var qualifier = "QualitySettings";

            // Act
            var context = _provider.GetContext(null, qualifier);

            // Assert
            Assert.IsInstanceOf<Dictionary<string, object>>(context);
            var settings = (Dictionary<string, object>)context;
            
            // Check for a known property in QualitySettings
            Assert.IsTrue(settings.ContainsKey("currentLevel"));
            Assert.AreEqual(QualitySettings.GetQualityLevel(), (int)settings["currentLevel"]);
        }

        [Test]
        public void GetContext_WithAnotherValidSettings_ReturnsTimeManagerData()
        {
            // Arrange
            var qualifier = "TimeManager";

            // Act
            var context = _provider.GetContext(null, qualifier);

            // Assert
            Assert.IsInstanceOf<Dictionary<string, object>>(context);
            var settings = (Dictionary<string, object>)context;

            // Check for a known property in TimeManager using its programmatic C# name.
            Assert.IsTrue(settings.ContainsKey("fixedDeltaTime"));
            Assert.AreEqual(Time.fixedDeltaTime, (float)(double)settings["fixedDeltaTime"], 0.0001f);
        }

        [Test]
        public void GetContext_WithInvalidSettings_ReturnsErrorString()
        {
            // Arrange
            var qualifier = "NonExistentSettingsFile";

            // Act
            var context = _provider.GetContext(null, qualifier);

            // Assert
            Assert.IsInstanceOf<string>(context);
            Assert.IsTrue(((string)context).StartsWith("Error: Could not find project settings file"));
        }

        [Test]
        public void GetContext_WithNullQualifier_ReturnsErrorString()
        {
            // Arrange & Act
            var context = _provider.GetContext(null, null);

            // Assert
            Assert.IsInstanceOf<string>(context);
            Assert.IsTrue(((string)context).StartsWith("Error: A settings asset name (qualifier) is required"));
        }
    }
}