#region CPL License
/*
Nuclex.NAnt.Tasks
Copyright (C) 2009 Nuclex Development Labs

This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.

You should have received a copy of the IBM Common Public
License along with this library
*/
#endregion

using System;
using System.Collections.Generic;
using System.IO;
using System.Diagnostics;

using Microsoft.Win32;

using NAnt.Core;
using NAnt.Core.Attributes;
using NAnt.Core.Types;

namespace Nuclex.NAnt.Tasks {

  /// <summary>Task for extracting files from a 7-Zip archive</summary>
  [TaskName("sevenzip-extract")]
  public class SevenZipExtractTask : Task {

    /// <summary>Initializes a new 7-Zip extraction task</summary>
    public SevenZipExtractTask() {
      this.toDirectory = new DirectoryInfo(".");
    }

    /// <summary>Archive to create or to extract files from</summary>
    [TaskAttribute("archive", Required = true), StringValidator(AllowEmpty = false)]
    public FileInfo Archive {
      get { return this.archive; }
      set { this.archive = value; }
    }

    /// <summary>Password the archive is protected with</summary>
    [TaskAttribute("password", Required = false), StringValidator(AllowEmpty = false)]
    public string Password {
      get { return this.password; }
      set { this.password = value; }
    }

    /// <summary>Directory into which the 7-Zip archive will be extracted</summary>
    [TaskAttribute("todir"), StringValidator(AllowEmpty = false)]
    public DirectoryInfo ToDirectory {
      get { return this.toDirectory; }
      set { this.toDirectory = value; }
    }

    /// <summary>Executes the task</summary>
    protected override void ExecuteTask() {
      this.Log(
        Level.Info,
        "Extracting '{0}' to '{1}'.",
        this.archive.FullName,
        this.toDirectory.FullName
      );

      string commandLine = string.Format(
        "x -y \"{0}\"",
        this.archive
      );
      if(!string.IsNullOrEmpty(this.password)) {
        commandLine += " -p\"" + this.password + "\"";
      }

      if(!Directory.Exists(this.toDirectory.FullName)) {
        Directory.CreateDirectory(this.toDirectory.FullName);
      }

      try {
        SevenZip.Run(this.toDirectory.FullName, commandLine);
      }
      catch(InvalidOperationException exception) {
        throw new BuildException(
          "Error during 7-Zip decompression operation: " + exception.Message,
          this.Location
        );
      }
    }

    /// <summary>Archive to create or to extract files from</summary>
    private FileInfo archive;
    /// <summary>Directory to extract to</summary>
    private DirectoryInfo toDirectory;
    /// <summary>Password the archive is protected with</summary>
    private string password;

  }

} // namespace Nuclex.NAnt.Tasks