using AssetRipper.Export.UnityProjects;
using AssetRipper.Export.UnityProjects.Configuration;
using AssetRipper.Import.Logging;
using AssetRipper.Processing;

namespace AssetRipper.Tools.SystemTester
{
	static class Program
	{
		private const string TestsDirectory = "../../Tests";

		static void Main(string[] args)
		{
			Logger.Add(new ConsoleLogger(true));
			Logger.Add(new FileLogger("AssetRipper.Tools.SystemTester.log"));
			Logger.LogSystemInformation("System Tester");
			Logger.BlankLine();

			if (args.Length == 0)
			{
				RunTests();
				Console.ReadLine();
			}
			else
			{
				Rip(args, Path.Combine(AppContext.BaseDirectory, "Ripped"));
			}
		}

		static void RunTests()
		{
			if (!Directory.Exists(TestsDirectory))
			{
				Logger.Log(LogType.Warning, LogCategory.General, "Tests folder did not exist. Creating...");
				Directory.CreateDirectory(TestsDirectory);
				Logger.Info(LogCategory.General, "Created. Program will now exit.");
				return;
			}

			Logger.Info(LogCategory.General, $"Running tests in {Path.GetFullPath(TestsDirectory)}");
			Logger.BlankLine();

			int numTests = 0;
			int numSuccessful = 0;
			List<(string, string)> successfulTests = new();
			List<(string, string)> unsuccessfulTests = new();
			foreach (string versionPath in Directory.GetDirectories(TestsDirectory))
			{
				string versionName = Path.GetRelativePath(TestsDirectory, versionPath);
				foreach (string testPath in Directory.GetDirectories(versionPath))
				{
					string testName = Path.GetRelativePath(versionPath, testPath);
					Logger.Info(LogCategory.General, $"Found test: '{testName}' for Unity version: '{versionName}'");
					numTests++;
					string inputPath = Path.Combine(testPath, "Input");
					if (!Directory.Exists(inputPath))
					{
						Logger.Log(LogType.Error, LogCategory.General, $"No input folder for '{testName}' on Unity version '{versionName}'");
						unsuccessfulTests.Add((versionName, testName));
					}
					else
					{
						try
						{
							string[] inputFiles = Directory.GetFiles(inputPath);
							string[] inputDirectories = Directory.GetDirectories(inputPath);
							string[] inputPaths = Combine(inputFiles, inputDirectories);
							string outputPath = Path.Combine(testPath, "Output");
							Rip(inputPaths, outputPath);
							Logger.Info(LogCategory.General, $"Completed test: '{testName}' for Unity version: '{versionName}'");
							Logger.BlankLine(2);
							numSuccessful++;
							successfulTests.Add((versionName, testName));
						}
						catch (Exception ex)
						{
							Logger.Log(LogType.Error, LogCategory.General, ex.ToString());
							Logger.BlankLine(2);
							unsuccessfulTests.Add((versionName, testName));
						}
					}
				}
			}

			Logger.Info(LogCategory.General, $"{numSuccessful}/{numTests} tests successfully completed");
			if (numSuccessful > 0)
			{
				Logger.Info(LogCategory.General, "Successful:");
				foreach ((string version, string test) in successfulTests)
				{
					Logger.Info(LogCategory.General, $"\t{version,-12} {test}");
				}
			}
			if (numSuccessful < numTests)
			{
				Logger.Info(LogCategory.General, "Unsuccessful:");
				foreach ((string version, string test) in unsuccessfulTests)
				{
					Logger.Info(LogCategory.General, $"\t{version,-12} {test}");
				}
			}
		}

		private static void Rip(string[] inputPaths, string outputPath)
		{
			LibraryConfiguration settings = new();
			settings.LogConfigurationValues();
			GameData gameData = Ripper.Load(inputPaths, settings);
			Ripper.Process(gameData, Ripper.GetDefaultProcessors(settings));
			PrepareExportDirectory(outputPath);
			Ripper.ExportProject(gameData, settings, outputPath);
		}

		private static void PrepareExportDirectory(string path)
		{
			if (Directory.Exists(path))
			{
				Logger.Info(LogCategory.Export, "Clearing export directory...");
				Directory.Delete(path, true);
			}
		}

		private static T[] Combine<T>(T[] array1, T[] array2)
		{
			ArgumentNullException.ThrowIfNull(array1);
			ArgumentNullException.ThrowIfNull(array2);

			T[] result = new T[array1.Length + array2.Length];
			for (int i = 0; i < array1.Length; i++)
			{
				result[i] = array1[i];
			}
			for (int j = 0; j < array2.Length; j++)
			{
				result[j + array1.Length] = array2[j];
			}
			return result;
		}
	}
}