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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Wordbee.Beebox.Extensibility;
using System.IO;
 
 
namespace Acme.PseudoTranslationSample
{
 
	public class SampleTranslatedFileAction : BeeboxTranslatedFileAction
	{
 
		/// <summary>
		/// Gets the globally unique id of this extension.
		/// </summary>
		public override string ExtensionID { get { return "acme-tfa"; } }
 
 
		/// <summary>
		/// Gets if the extension is by default enabled. If false, then it must be enabled explicitly in each
		/// Beebox project from the Beebox Admin UI.
		/// </summary>
		public override bool EnableByDefault { get { return false; } }
 
 
 
		/// <summary>
		/// Gets a name. Displayed in the Beebox extension manager page.
		/// </summary>
		public override string Name { get { return "Copy translated files"; } }
 
 
		/// <summary>
		/// Gets a description. Displayed in the Beebox extension manager page.
		/// </summary>
		public override string Description { get { return "Copies all translated files to another location."; } }
 
 
		/// <summary>
		/// Gets version number. Displayed in the Beebox extension manager page.
		/// </summary>
		public override string Version { get { return "1.0"; } }
 
 
		/// <summary>
		/// Gets the author. Displayed in the Beebox extension manager page.
		/// </summary>
		public override string Author { get { return "Acme Ltd"; } }
 
 
 
		/// <summary>
		/// Gets optional help description (not html!) of the configuration parameter.
		/// By returning a non-null value, you explicitly tell the Beebox that this extension has a configurable parameter.
		/// </summary>
		public override string ParameterHelp 
		{ 
			get
			{
				return 
					"Specify the sub directory inside out folder to which files will be copied." +
					"Then the name transformation pattern. Separate with semi-colon.\n " +
					"The name pattern may contain:\n " +
					"{name} : The file name without extension.\n " +
					"{extension} : The file extension.\n " +
					"{tlocale} : The target language code.\n " +
					"{slocale} : The source language code.\n ";
			} 
		}
 
 
 
		/// <summary>
		/// Gets the default value of the parameter. Default can be changed by user.
		/// </summary>
		public override string ParameterDefault { get { return @"_copy; {tlocale}-{name}{extension}"; } }
 
 
 
		/// <summary>
		/// Validates the user parameters.
		/// Return null if ok, otherwise return an error text.
		/// </summary>
		/// <param name="parameter">The parameter edited by a user.</param>
		/// <returns>Null: parameter is ok. Otherwise return an error message.</returns>
		public override string ValidateParameter(string parameter)
		{
			try
			{
				if (string.IsNullOrWhiteSpace(parameter)) return null;
				var arr = parameter.Split(';');
				if (arr.Length != 2) return "Specify a subdirectory followed by semi-colon followed by name pattern.";
 
				// Here you need to check each array element in detail.
				if (string.IsNullOrWhiteSpace(arr[0])) return "The subdirectory name is missing.";
				if (string.IsNullOrWhiteSpace(arr[1])) return "The name transformation pattern is missing.";
 
				return null;
			}
			catch (Exception e)
			{
				return "The parameter is not correct.";
			}
		}
 
 
 
		/// <summary>
		/// Called whenever a translated file was created in the OUT directory. Its location is:
		/// {outdirectory}\{locale}\{relativepath}
		/// When your code shall copy the file to another location, please keep in mind that the relativepath can include directories.
		/// Example: "chapter\myfile1.doc", "data.xml", etc.
		/// </summary>
		/// <param name="projectkey">The project key</param>
		/// <param name="path">The full path of the created translated file.</param>
		/// <param name="outdirectory">The "OUT" directory path.</param>
		/// <param name="targetlocale">The target language code</param>
		/// <param name="filename">The relative path of the file with respect to {out directory}\{locale}(\){projectfolder}</param>
		/// <param name="sourcelocale">The source language code</param>
		/// <param name="configuration">The extension's parameters. You need to implement the respective virtual methods to permit configuring the parameter individually per project.</param>
		public override void Process(
				string projectkey, 
				string path, 
				string outdirectory, 
				string targetlocale, 
				string filename, 
				string sourcelocale, 
				IExtensionConfiguration configuration)
		{
			string subdirectory, namepattern;
 
			// Get parameters
			var parameter = configuration.Parameter ?? ParameterDefault;
			var arr = configuration.Parameterparameter.Split(';');
			subdirectory = arr[0].Trim();
			namepattern = arr[1].Trim();
 
			// Calculate target path
			string name = Path.GetFileName(filename);
			string newname = namepattern
								.Replace("{name}", Path.GetFileNameWithoutExtension(name))
								.Replace("{extension}", Path.GetExtension(name))
								.Replace("{tlocale}", targetlocale)
								.Replace("{slocale}", sourcelocale);
 
			string targetPath = Path.Combine(outdirectory, subdirectory, targetlocale, Path.GetDirectoryName(filename), newname);
 
			// Ensure that the file's directory exists. If not, create it now. Will raise exception if the target path is invalid.
			EnsureDirectoryExists(targetPath);
 
			// Copy file. May raise exception if the target file cannot be written.
			File.Copy(path, targetPath, true);
 
		}
 
 
 
		/// <summary>
		/// Creates all parent directories for the file path if these do not exist.
		/// </summary>
		/// <param name="filepath"></param>
		private static void EnsureDirectoryExists(string filepath)
		{
			string d = Path.GetDirectoryName(filepath);
			if (string.IsNullOrEmpty(d)) throw new Exception(string.Format("The file path '{0}' seems to be invalid. Failed to create all directories.", filepath));
			if (!Directory.Exists(d))
			{
				EnsureDirectoryExists(d);
				Directory.CreateDirectory(d);
			}
		}
 
 
	}
}