using System;
using System.Reflection;

//using UnityEngine;

using IllusionPlugin;
//using GamecraftModdingAPI;
using GamecraftModdingAPI.Commands;

namespace Kompressor
{
	public class MyPlugin : IPlugin // the Illusion Plugin Architecture (IPA) will ignore classes that don't implement IPlugin'
	{
		public string Name { get; } = Assembly.GetExecutingAssembly().GetName().Name; // Kompressor by default
		// To change the name, change the project's name

		public string Version { get; } = Assembly.GetExecutingAssembly().GetName().Version.ToString(); // 0.0.1.0 by default
																									   // To change the version, change <Version>0.0.1</Version> in Kompressor.csproj

		private const string SETTINGS_PATH = "kompressor.json";

        // called when Gamecraft shuts down
		public void OnApplicationQuit()
		{
            // Shutdown this mod
			GamecraftModdingAPI.Utility.Logging.LogDebug($"{Name} has shutdown");

            // Shutdown the Gamecraft modding API last
			GamecraftModdingAPI.Main.Shutdown();
		}

        // called when Gamecraft starts up
		public void OnApplicationStart()
		{
            // Initialize the Gamecraft modding API first
			GamecraftModdingAPI.Main.Init();
			// check out the modding API docs here: https://mod.exmods.org/

			// reload command
			CommandBuilder.Builder()
					      .Name("ReloadKompressor")
						  .Description("Reload Kompressor quality settings.")
			              .Action(() => { LoadAndApplySettings(); })
						  .Build();

			// apply settings after the game starts up (but only once)
			bool IsGamecraftStarted = false;
			GamecraftModdingAPI.App.Client.EnterMenu += (_, __) =>
			{
				if (IsGamecraftStarted) return;
				IsGamecraftStarted = true;
				try
				{
					LoadAndApplySettings();
				}
				catch (Exception)
				{
					GamecraftModdingAPI.Utility.Logging.LogWarning("Failed to load kompressor.json, generated default file.");
				}

			};
            
			GamecraftModdingAPI.Utility.Logging.MetaLog($"{Name} has started up");
		}

		internal void LoadAndApplySettings(bool suppress = false)
		{
			QualitySettings qs = QualitySettingsUtility.Default();
			try
			{
				qs = QualitySettingsUtility.Load(SETTINGS_PATH);
			}
			catch (Exception e)
			{
				QualitySettingsUtility.Save(qs, SETTINGS_PATH);
				if (!suppress) throw e;
			}

			ApplySettings(qs);
		}

		internal void ApplySettings(QualitySettings qs)
		{
			UnityEngine.QualitySettings.SetQualityLevel(qs.QualitySettingIndex, true);
			// TODO
			UnityEngine.QualitySettings.anisotropicFiltering = (UnityEngine.AnisotropicFiltering)System.Enum.Parse(typeof(UnityEngine.AnisotropicFiltering), qs.AnisotropicFiltering);
			UnityEngine.QualitySettings.antiAliasing = qs.AntiAliasing;
			UnityEngine.QualitySettings.asyncUploadBufferSize = qs.AsyncUploadBufferSize;
			UnityEngine.QualitySettings.asyncUploadPersistentBuffer = qs.AsyncUploadPersistentBuffer;
			UnityEngine.QualitySettings.asyncUploadTimeSlice = qs.AsyncUploadTimeSlice;
			UnityEngine.QualitySettings.billboardsFaceCameraPosition = qs.BillBoardsFaceCameraPosition;
			UnityEngine.QualitySettings.lodBias = qs.LODBias;
			UnityEngine.QualitySettings.masterTextureLimit = qs.MasterTextureLimit;
			UnityEngine.QualitySettings.maximumLODLevel = qs.MaximumLODLevel;
			UnityEngine.QualitySettings.maxQueuedFrames = qs.MaxQueuedFrames;
			UnityEngine.QualitySettings.particleRaycastBudget = qs.ParticleRaycastBudget;
			UnityEngine.QualitySettings.pixelLightCount = qs.PixelLightCount;
			UnityEngine.QualitySettings.realtimeReflectionProbes = qs.RealtimeReflectionProbes;
			UnityEngine.QualitySettings.resolutionScalingFixedDPIFactor = qs.ResolutionScalingFixedDPIFactor;
			UnityEngine.QualitySettings.shadowCascade2Split = qs.ShadowCascade2Split;
			// TODO shadowCascade4Split
			UnityEngine.QualitySettings.shadowCascades = qs.ShadowCascades;
			UnityEngine.QualitySettings.shadowDistance = qs.ShadowDistance;
			UnityEngine.QualitySettings.shadowmaskMode = (UnityEngine.ShadowmaskMode)Enum.Parse(typeof(UnityEngine.ShadowmaskMode), qs.ShadowmaskMode);
			UnityEngine.QualitySettings.shadowNearPlaneOffset = qs.ShadowNearPlaneOffset;
			UnityEngine.QualitySettings.shadowProjection = (UnityEngine.ShadowProjection)Enum.Parse(typeof(UnityEngine.ShadowProjection), qs.ShadowProjection);
			UnityEngine.QualitySettings.shadowResolution = (UnityEngine.ShadowResolution)Enum.Parse(typeof(UnityEngine.ShadowResolution), qs.ShadowResolution);
			UnityEngine.QualitySettings.shadows = (UnityEngine.ShadowQuality)Enum.Parse(typeof(UnityEngine.ShadowQuality), qs.Shadows);
			UnityEngine.QualitySettings.skinWeights = (UnityEngine.SkinWeights)Enum.Parse(typeof(UnityEngine.SkinWeights), qs.SkinWeights);
			UnityEngine.QualitySettings.softParticles = qs.SoftParticles;
			UnityEngine.QualitySettings.softVegetation = qs.SoftVegetation;
			UnityEngine.QualitySettings.streamingMipmapsActive = qs.StreamingMipmapsActive;
			UnityEngine.QualitySettings.streamingMipmapsAddAllCameras = qs.StreamingMipmapsAddAllCameras;
			UnityEngine.QualitySettings.streamingMipmapsMaxFileIORequests = qs.StreamingMipmapsMaxFileIORequests;
			UnityEngine.QualitySettings.streamingMipmapsMaxLevelReduction = qs.StreamingMipmapsMaxLevelReduction;
			UnityEngine.QualitySettings.streamingMipmapsMemoryBudget = qs.StreamingMipmapsMemoryBudget;
			//UnityEngine.QualitySettings.streamingMipmapsRenderersPerFrame = qs.StreamingMipmapsRendersPerFrame;
			UnityEngine.QualitySettings.vSyncCount = qs.VSyncCount;
			UnityEngine.Application.targetFrameRate = qs.TargetFrameRate;

			UnityEngine.Camera.main.fieldOfView = qs.FieldOfView;
		}

        // unused methods

		public void OnFixedUpdate() { } // called once per physics update

		public void OnLevelWasInitialized(int level) { } // called after a level is initialized

		public void OnLevelWasLoaded(int level) { } // called after a level is loaded

		public void OnUpdate() { } // called once per rendered frame (frame update)
	}
}