using System;

namespace Wayne.Lib.IO
{
    /// <summary>
    /// Support class managing file paths of the Wayne system.
    /// </summary>
    public static class Paths
    {
        #region Construction

        static Paths()
        {
            pathsImplementation = FileSupport.fileSupport.Paths;

        }

        #endregion

        #region fields
        /// <summary>
        /// The current implementation to be used.
        /// </summary>
        private static IPaths pathsImplementation;
        #endregion

        #region Properties

        /// <summary>
        /// The root path used by Wayne applications.
        /// </summary>
        public static string Root { get { return pathsImplementation.Root; } }

        /// <summary>
        /// The base path to all config files.
        /// </summary>
        public static string Config { get { return pathsImplementation.Config; } }

        /// <summary>
        /// The base path to all transaction files.
        /// </summary>
        public static string Transactions { get { return pathsImplementation.Transactions; } }

        /// <summary>
        /// The base path to all log files.
        /// </summary>
        public static string Log { get { return pathsImplementation.Log; } }

        /// <summary>
        /// The complete path (including the file name) to the executable.
        /// </summary>
        public static string ExecutablePath { get { return pathsImplementation.ExecutablePath; } }

        /// <summary>
        /// The directory path to the executable.
        /// </summary>
        public static string ExecutableDirectory { get { return pathsImplementation.ExecutableDirectory; } }

        /// <summary>
        /// The base path to data files.
        /// </summary>
        public static string Data { get { return pathsImplementation.Data; } }

        #endregion

        #region Methods

        /// <summary>
        /// Combines the Root path and the given subPath.
        /// </summary>
        /// <param name="subPath">The sub path (under the main path).</param>
        /// <returns></returns>
        public static string Combine(string subPath)
        {
            return pathsImplementation.Combine(subPath);
        }

        /// <summary>
        /// Combines the Root path and the given subPath and file name.
        /// </summary>
        /// <param name="subPath">The sub path (under the main path).</param>
        /// <param name="subPath2">An additional sub path (or the name of a file).</param>
        /// <returns></returns>
        public static string Combine(string subPath, string subPath2)
        {
            return pathsImplementation.Combine(subPath, subPath2);
        }

        /// <summary>
        /// Returns the config path to the given config name.
        /// </summary>
        /// <param name="configName">The name of the config.</param>
        /// <returns></returns>
        public static string GetConfigPath(string configName)
        {
            return pathsImplementation.GetConfigPath(configName);
        }

        /// <summary>
        /// Returns the config path to the given config name.
        /// </summary>
        /// <param name="configName">The name of the config.</param>
        /// <param name="fileName">The name of a config file.</param>
        /// <returns></returns>
        public static string GetConfigPath(string configName, string fileName)
        {
            return pathsImplementation.GetConfigPath(configName, fileName);
        }

        /// <summary>
        /// Returns the transaction file path to the given terminal type.
        /// </summary>
        /// <param name="terminalType">The name of the terminal type.</param>
        /// <returns></returns>
        public static string GetTransactionsPath(string terminalType)
        {
            return pathsImplementation.GetTransactionsPath(terminalType);
        }

        /// <summary>
        /// Returns the transaction file path to the given terminal type.
        /// </summary>
        /// <param name="terminalType">The name of the terminal type.</param>
        /// <param name="subState">The name of the sub state.</param>
        /// <returns></returns>
        public static string GetTransactionsPath(string terminalType, string subState)
        {
            return pathsImplementation.GetTransactionsPath(terminalType, subState);
        }

        /// <summary>
        /// Replaces the extension of a file (e.g. from C:\MyFile.aaa to C:\MyFile.bbb)
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="newExtension"></param>
        /// <returns></returns>
        public static string ReplaceExtension(string fileName, string newExtension)
        {
            return pathsImplementation.ReplaceExtension(fileName, newExtension);
        }

        #endregion

        #region Parse

        /// <summary>
        /// Parses the path to replace any %...% variables with the current actual path.
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static string Parse(string path)
        {
            return pathsImplementation.Parse(path);
        }

        private static void Replace(ref string path, string variableName, string actualText)
        {
            int index = path.IndexOf(variableName, StringComparison.InvariantCultureIgnoreCase);
            if (index > -1)
                path = path.Remove(index, variableName.Length).Insert(index, actualText);
        }

        /// <summary>
        /// Checks if file exists
        /// </summary>
        /// <param name="fileName"></param>
        /// <returns></returns>
        [Obsolete("Use the DirectoryExists() in FileSupport instead!")]
        public static bool FileExists(string fileName)
        {
            return pathsImplementation.FileExists(Parse(fileName));
        }

        /// <summary>
        /// Checks if directory exists
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        [Obsolete("Use the DirectoryExists() in FileSupport instead!")]
        public static bool DirectoryExists(string path)
        {
            return pathsImplementation.EnsureDirectoryExists(path);
        }

        /// <summary>
        /// Ensures the directory exists by trying to create it if it does not exist already.
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        [Obsolete("Use the DirectoryExists() in FileSupport instead!")]
        public static bool EnsureDirectoryExists(string path)
        {
            return pathsImplementation.EnsureDirectoryExists(path);
        }

        #endregion
    }
}