// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
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//   * Neither the name of the Aegisub Group nor the names of its contributors
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file subtitles_provider.cpp
/// @brief Base class for subtitle renderers
/// @ingroup subtitle_rendering
///

#include "config.h"

#include "compat.h"
#include "main.h"
#ifdef WITH_CSRI
#include "subtitles_provider_csri.h"
#endif
#ifdef WITH_LIBASS
#include "subtitles_provider_libass.h"
#endif

/// @brief Get provider 
/// @return 
///
SubtitlesProvider* SubtitlesProviderFactory::GetProvider() {
	std::vector<std::string> list = GetClasses(OPT_GET("Subtitle/Provider")->GetString());
	if (list.empty()) throw _T("No subtitle providers are available.");

	// Get provider
	wxString error;
	for (unsigned int i=0;i<list.size();i++) {
		try {
			size_t pos = list[i].find('/');
			std::string name = list[i].substr(0, pos);
			std::string subType = pos < list[i].size() - 1 ? list[i].substr(pos + 1) : "";
			SubtitlesProvider *provider = Create(list[i], subType);
			if (provider) return provider;
		}
		catch (agi::UserCancelException const&) { throw; }
		catch (wxString err) { error += list[i] + _T(" factory: ") + err + _T("\n"); }
		catch (const wxChar *err) { error += list[i] + _T(" factory: ") + wxString(err) + _T("\n"); }
		catch (...) { error += list[i] + _T(" factory: Unknown error\n"); }
	}

	// Failed
	throw error;
}

/// @brief Register providers 
///
void SubtitlesProviderFactory::RegisterProviders() {
#ifdef WITH_CSRI
	Register<CSRISubtitlesProvider>("CSRI", false, CSRISubtitlesProvider::GetSubTypes());
#endif
#ifdef WITH_LIBASS
	Register<LibassSubtitlesProvider>("libass");
	LibassSubtitlesProvider::CacheFonts();
#endif
}

template<> SubtitlesProviderFactory::map *FactoryBase<SubtitlesProvider *(*)(std::string)>::classes = NULL;