#include "PluginManager.h"

#include "Logger.h"
#include "ConfigFile.h"
#include "Common.h"
#include "Util.h"


#include "ProxyPlugin.h"
#include "plugins/EchoPlugin.h"
#include "plugins/SpamPlugin.h"
#include "plugins/ShellExecPlugin.h"
#include "plugins/TogPlugin.h"
#include "plugins/StatusPlugin.h"
#include "plugins/ListPlugin.h"
#include "plugins/HostStatusPlugin.h"
#include "plugins/WeatherPlugin.h"
#include "plugins/UrlTriggerPlugin.h"


#include "AccessManager.h"

typedef std::map<std::string, Plugin*>::iterator MapIterator;

PluginManager::PluginManager()
{
}

PluginManager::~PluginManager()
{
}


void PluginManager::AddPlugin(Plugin* plugin)
{
	if (plugin != 0)
	{
		if (plugin->IsHelper())
		{
			_helper_plugins.push_back(plugin);
		}
		else
		{
			std::string command = plugin->GetCommand();

			if ( _plugins[ command ] == 0)
				_plugins[ command ] = plugin;
			else
				Logger::logMessage( std::string("AddPlugin() -- already have a plugin called ") + command);
		}
	}
	else
	{
		Logger::logMessage("AddPlugin() -- cannot register a null pointer");
	}
}

Plugin* PluginManager::CreatePlugin(const std::string& pluginName, const std::map<std::string,std::string>& args)
{
	if (pluginName == "echo")
		return new EchoPlugin();

	if (pluginName == "spam")
		return new SpamPlugin();

	if (pluginName == "tog")
		return new TogPlugin();

	if (pluginName == "status")
		return new StatusPlugin();

	if (pluginName == "list")
		return new ListPlugin();

	if (pluginName == "hoststatus")
		return new HostStatusPlugin();

	if (pluginName == "weather")
		return new WeatherPlugin();

	if (pluginName == "shellexec")
		return new ShellExecPlugin(args);

	if (pluginName == "urltrigger")
		return new UrlTriggerPlugin(args);

	return 0;
}


void PluginManager::DestroyPlugins()
{
	for (std::map<std::string,Plugin*>::iterator it=_plugins.begin(); it!=_plugins.end(); ++it)
	{
		delete it->second;
	}
	_plugins.clear();
}

void PluginManager::LoadPlugins()
{
	Logger::logMessage("-------- PluginList --------");
	std::vector<Value> pluginlist = Common::instance()->GetConfigfile()->GetValues("smsdaemon", "plugin");

	for (unsigned i=0; i<pluginlist.size(); i++) 
	{
		std::string current = pluginlist[i];
		
		std::string name;
		unsigned pos = current.find(' ');
		std::map<std::string,std::string> args;

		std::string argstr;

		if (pos == std::string::npos)
		{
			name = current;
		}
		else
		{
			name = Util::str_trim(current.substr(0,pos));
			argstr = Util::str_trim(current.substr(pos+1,1024));
			args = ConfigHelper::ParseArguments(argstr);
		}

		Plugin* pl = 0;
		try
		{	
			pl = CreatePlugin(name, args );
		}
		catch (std::exception& e)
		{
			Logger::logMessage(std::string("Failed to load plugin ") + name + " with args: " + argstr);
			Logger::logMessage(std::string("Reason: ") + e.what());
			continue;
		}

		if (pl)
		{
			AddPlugin(pl);
			ParseCommonOptions(name,args);
		}
		else
			Logger::logMessage( std::string("Unknown plugin: ")+name);
		
	}	


	for (MapIterator it = _plugins.begin(); it != _plugins.end(); ++it)
	{
		Plugin* pl = (*it).second;
		if (pl != 0)
			Logger::logMessage( std::string("Loaded plugin \"") + pl->GetCommand() + "\" - " + pl->GetDescription() );
	}
}

void PluginManager::ParseCommonOptions(const std::string& pluginName, std::map<std::string,std::string>& args)
{
	if (args["privileged"] == "1")
	{
		AccessManager::AddPrivPlugin(pluginName);
	}
}

Plugin* PluginManager::GetPlugin(const std::string& pluginname)
{
	static ProxyPlugin proxy;

	std::map<std::string,Plugin*>::iterator it = _plugins.find(pluginname );

	if (it != _plugins.end() )
	{
		proxy.SetPlugin(it->second);
		return &proxy;
	}
	else
	{
		return 0;
	}
}


std::vector<Plugin*> PluginManager::GetPluginList()
{
	typedef std::map<std::string, Plugin*>::iterator MapIterator;
	std::vector<Plugin*> plugin_list;

	for (MapIterator it = _plugins.begin(); it != _plugins.end(); ++it)
	{
		Plugin* pl = (*it).second;
		plugin_list.push_back(pl);
	}


	return plugin_list;
}