using System;

using System.IO;

using System.Linq;

using Common.Logging;

namespace ScriptCs.Command

{

internal class CleanCommand : ICleanCommand

{

private readonly string _scriptName;

private readonly IFileSystem _fileSystem;

private readonly IPackageAssemblyResolver _packageAssemblyResolver;

private readonly ILog _logger;

public CleanCommand(string scriptName,

IFileSystem fileSystem,

IPackageAssemblyResolver packageAssemblyResolver, ILog logger)

{

_scriptName = scriptName;

_fileSystem = fileSystem;

_packageAssemblyResolver = packageAssemblyResolver;

_logger = logger;

}

public CommandResult Execute()

{

_logger.Info("Cleaning initiated...");

var workingDirectory = _fileSystem.GetWorkingDirectory(_scriptName);

_logger.TraceFormat("Working directory: {0}", workingDirectory);

var binFolder = Path.Combine(workingDirectory, Constants.BinFolder);

_logger.TraceFormat("Bin folder: {0}", binFolder);

var packageFolder = Path.Combine(workingDirectory, Constants.PackagesFolder);

_logger.TraceFormat("Packages folder: {0}", packageFolder);

try

{

if (_fileSystem.DirectoryExists(binFolder))

{

var packages = _packageAssemblyResolver.GetAssemblyNames(workingDirectory);

foreach (var package in packages)

{

_logger.DebugFormat("Deleting file: {0}", package);

DeleteFile(package, binFolder);

}

var remaining = _fileSystem.EnumerateFiles(binFolder, "*.*").Any();

if (!remaining)

{

_logger.DebugFormat("Deleting bin directory: {0}", binFolder);

_fileSystem.DeleteDirectory(binFolder);

}

}

if (_fileSystem.DirectoryExists(packageFolder))

{

_logger.DebugFormat("Deleting package directory: {0}", packageFolder);

_fileSystem.DeleteDirectory(packageFolder);

}

_logger.Info("Clean completed successfully.");

return CommandResult.Success;

}

catch (Exception e)

{

_logger.ErrorFormat("Clean failed: {0}.", e.Message);

return CommandResult.Error;

}

}

private void DeleteFile(string package, string binFolder)

{

var assemblyFileName = Path.GetFileName(package);

if (assemblyFileName == null) return;

var destFile = Path.Combine(binFolder, assemblyFileName);

if (_fileSystem.FileExists(destFile))

{

_fileSystem.FileDelete(destFile);

}

}

}

}