using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using Tango.Logging;
using DeepEqual;
using DeepEqual.Syntax;

namespace Tango.UnitTesting
{
    /// <summary>
    /// Contains several unit testing helper methods.
    /// </summary>
    public static class Helper
    {
        /// <summary>
        /// Gets the absolute path to the specified file name in the solution 'Resources' folder.
        /// </summary>
        /// <param name="fileName">Name of the file.</param>
        /// <returns></returns>
        public static String GetResourcePath(String fileName)
        {
            return Path.GetFullPath(@"..\..\..\Resources\" + fileName);
        }

        /// <summary>
        /// Gets the absolute path to the 'Resources' folder.
        /// </summary>
        /// <returns></returns>
        public static String GetResourcePath()
        {
            return Path.GetFullPath(@"..\..\..\Resources\");
        }

        /// <summary>
        /// Gets the PMR (Protobuf Messages Repository) path.
        /// </summary>
        /// <returns></returns>
        public static String GetPMRPath()
        {
            return Path.GetFullPath(@"..\..\..\PMR\Messages\");
        }

        /// <summary>
        /// Gets the machine studio exe path.
        /// </summary>
        /// <returns></returns>
        public static String GetMachineStudioPath()
        {
            return Path.GetFullPath(@"..\..\Build\Debug\Tango.MachineStudio.UI.exe");
        }

        /// <summary>
        /// Gets the tango build path.
        /// </summary>
        /// <returns></returns>
        public static String GetBuildPath()
        {
            return Path.GetFullPath(@"..\..\Build\Debug");
        }

        /// <summary>
        /// Gets the SQLite database file path in DB folder.
        /// </summary>
        /// <returns></returns>
        public static String GetSQLiteFilePath()
        {
            return Path.GetFullPath(@"..\..\..\DB\Tango.db");
        }

        /// <summary>
        /// Initializes the logging manager.
        /// </summary>
        public static ConsoleLogger InitializeLogging(bool useConsole = false, [CallerMemberName] string testName = null)
        {
            LogManager.Default.RegisterLogger(new FileLogger(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Twine", "Tango", "logs", "Unit Testing"), "Unit_Testing"));
            if (useConsole)
            {
                var consoleLogger = new ConsoleLogger(testName);
                LogManager.Default.RegisterLogger(consoleLogger);
                return consoleLogger;
            }

            return null;
        }

        /// <summary>
        /// Creates a temporary folder and returns it's path.
        /// </summary>
        /// <returns></returns>
        public static String GetTempFolderPathAppend(String customFolder, [CallerMemberName] string testName = null)
        {
            String tempDirectory = Path.Combine(Path.GetTempPath(), "Twine", "Unit Testing", testName, customFolder);
            Directory.CreateDirectory(tempDirectory);
            return tempDirectory;
        }

        /// <summary>
        /// Creates a temporary folder and returns it's path.
        /// </summary>
        /// <returns></returns>
        public static String GetTempFolderPath([CallerMemberName] string testName = null)
        {
            String tempDirectory = Path.Combine(Path.GetTempPath(), "Twine", "Unit Testing", testName, Path.GetRandomFileName());
            Directory.CreateDirectory(tempDirectory);
            return tempDirectory;
        }

        /// <summary>
        /// Tries to delete folder.
        /// </summary>
        /// <param name="path">The path.</param>
        /// <returns></returns>
        public static bool TryDeleteFolder(String path)
        {
            try
            {
                Directory.Delete(path, true);
                return true;
            }
            catch
            {
                return false;
            }
        }

        /// <summary>
        /// Shows the file in explorer.
        /// </summary>
        /// <param name="path">Name of the file/folder.</param>
        public static void ShowInExplorer(String path)
        {
            Process.Start("explorer.exe", string.Format("/select,\"{0}\"", path));
        }

        /// <summary>
        /// Returns true if the two objects are equal by using deep equal.
        /// </summary>
        /// <param name="obj1">First object.</param>
        /// <param name="obj2">Second object.</param>
        /// <returns></returns>
        public static bool IsDeepEqual(Object obj1, Object obj2)
        {
            return obj1.IsDeepEqual(obj2);
        }
    }
}