using System;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Common.Logging;

using ScriptCs.Contracts;

using ScriptCs.Engine.Roslyn;

using ScriptCs.Hosting;

using log4net.Core;

using LogLevel = ScriptCs.Contracts.LogLevel;

namespace ScriptCs

{

public class ScriptServicesBuilder : ServiceOverrides<IScriptServicesBuilder>, IScriptServicesBuilder

{

private readonly IInitializationServices _initializationServices;

private IRuntimeServices _runtimeServices;

private readonly IConsole _console;

private bool _repl = false;

private bool _cache = false;

private string _scriptName;

private LogLevel _logLevel;

private Type _scriptExecutorType;

private Type _scriptEngineType;

private ILog _logger;

public ScriptServicesBuilder(IConsole console, ILog logger, IRuntimeServices runtimeServices = null)

{

_initializationServices = new InitializationServices(logger);

_runtimeServices = runtimeServices;

_console = console;

_logger = logger;

}

public ScriptServices Build()

{

var defaultExecutorType = typeof(ScriptExecutor);

Type defaultEngineType = _cache ? typeof(RoslynScriptPersistentEngine) : typeof(RoslynScriptInMemoryEngine);

defaultEngineType = _repl ? typeof(RoslynScriptEngine) : defaultEngineType;

_scriptExecutorType = Overrides.ContainsKey(typeof(IScriptExecutor)) ? (Type)Overrides[typeof(IScriptExecutor)] : defaultExecutorType;

_scriptEngineType = Overrides.ContainsKey(typeof(IScriptEngine)) ? (Type)Overrides[typeof(IScriptEngine)] : defaultEngineType;

var initDirectoryCatalog = _scriptName != null || _repl;

if (_runtimeServices == null)

{

_runtimeServices = new RuntimeServices(_logger, Overrides, LineProcessors, _console,

_scriptEngineType, _scriptExecutorType,

initDirectoryCatalog,

_initializationServices, _scriptName);

}

return _runtimeServices.GetScriptServices();

}

public IScriptServicesBuilder LoadModules(string extension, params string[] moduleNames)

{

var config = new ModuleConfiguration(_cache, _scriptName, _repl, _logLevel, Overrides);

var loader = _initializationServices.GetModuleLoader();

loader.Load(config, _initializationServices.GetFileSystem().ModulesFolder, extension, moduleNames);

return this;

}

public IScriptServicesBuilder Cache(bool cache = true)

{

_cache = cache;

return this;

}

public IScriptServicesBuilder ScriptName(string name)

{

_scriptName = name;

return this;

}

public IScriptServicesBuilder Repl(bool repl = true)

{

_repl = repl;

return this;

}

public IScriptServicesBuilder LogLevel(LogLevel level)

{

_logLevel = level;

return this;

}

}

}