using System;

using System.Collections.Generic;

using System.Linq;

using System.IO;

using Common.Logging;

using ScriptCs.Contracts;

using ServiceStack.Text;

namespace ScriptCs

{

public class Repl

{

public static readonly string[] DefaultReferences = new[] { "System", "System.Core", "System.Data", "System.Data.DataSetExtensions", "System.Xml", "System.Xml.Linq" };

public static readonly string[] DefaultNamespaces = new[] { "System", "System.Collections.Generic", "System.Linq", "System.Text", "System.Threading.Tasks" };

public IFileSystem FileSystem { get; private set; }

public IScriptEngine ScriptEngine { get; private set; }

public IFilePreProcessor FilePreProcessor { get; private set; }

public ILog Logger { get; private set; }

public IConsole Console { get; private set; }

public ScriptPackSession ScriptPackSession { get; private set; }

public IEnumerable<string> References { get; private set; }

public Repl(IFileSystem fileSystem, IScriptEngine scriptEngine, ILog logger, IConsole console, IFilePreProcessor filePreProcessor)

{

FileSystem = fileSystem;

ScriptEngine = scriptEngine;

FilePreProcessor = filePreProcessor;

Logger = logger;

Console = console;

}

public void Initialize(IEnumerable<string> paths, IEnumerable<IScriptPack> scriptPacks)

{

References = DefaultReferences.Union(paths);

var bin = Path.Combine(FileSystem.CurrentDirectory, "bin");

ScriptEngine.BaseDirectory = bin;

Logger.Debug("Initializing script packs");

var scriptPackSession = new ScriptPackSession(scriptPacks);

scriptPackSession.InitializePacks();

ScriptPackSession = scriptPackSession;

}

public void Terminate()

{

Logger.Debug("Terminating packs");

ScriptPackSession.TerminatePacks();

}

public void Execute(string script)

{

var foregroundColor = Console.ForegroundColor;

try

{

if (PreProcessorUtil.IsLoadLine(script))

{

var filepath = PreProcessorUtil.GetPath(PreProcessorUtil.LoadString, script);

script = FilePreProcessor.ProcessFile(filepath);

}

else if (PreProcessorUtil.IsRLine(script))

{

var assemblyPath = PreProcessorUtil.GetPath(PreProcessorUtil.RString, script);

References = References.Union(new[] { assemblyPath });

return;

}

Console.ForegroundColor = ConsoleColor.Cyan;

var result = ScriptEngine.Execute(script, References, DefaultNamespaces, ScriptPackSession);

if (result != null)

{

Console.ForegroundColor = ConsoleColor.Yellow;

Console.WriteLine(result.ToJsv()

);

}

}

catch (Exception ex)

{

Console.ForegroundColor = ConsoleColor.Red;

Console.WriteLine("\r\n" + ex + "\r\n");

}

Console.ForegroundColor = foregroundColor;

}

}

}