/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "base/plugins.h"

#include "engines/advancedDetector.h"
#include "common/file.h"

#include "fullpipe/fullpipe.h"
#include "fullpipe/gameloader.h"


namespace Fullpipe {

const char *FullpipeEngine::getGameId() const {
	return _gameDescription->gameId;
}

}

static const PlainGameDescriptor fullpipeGames[] = {
	{"fullpipe", "Full Pipe"},
	{0, 0}
};

namespace Fullpipe {

static const ADGameDescription gameDescriptions[] = {

	// Fullpipe Russian version
	{
		"fullpipe",
		0,
		AD_ENTRY1s("0654.sc2", "099f54f86d33ad2395f3b854b7e05058", 2272),
		Common::RU_RUS,
		Common::kPlatformWindows,
		ADGF_DROPPLATFORM,
		GUIO1(GUIO_NONE)
	},

	// Fullpipe German version
	{
		"fullpipe",
		0,
		AD_ENTRY1s("0654.sc2", "d8743351fc53d205f42d91f6d791e51b", 2272),
		Common::RU_RUS,
		Common::kPlatformWindows,
		ADGF_DROPPLATFORM,
		GUIO1(GUIO_NONE)
	},

	AD_TABLE_END_MARKER
};

} // End of namespace Fullpipe

class FullpipeMetaEngine : public AdvancedMetaEngine {
public:
	FullpipeMetaEngine() : AdvancedMetaEngine(Fullpipe::gameDescriptions, sizeof(ADGameDescription), fullpipeGames) {
		_singleId = "fullpipe";
	}

	virtual const char *getName() const {
		return "Fullpipe Engine";
	}

	virtual const char *getOriginalCopyright() const {
		return "Fullpipe Engine (C) Pipe Studio";
	}

	virtual bool hasFeature(MetaEngineFeature f) const;
	virtual int getMaximumSaveSlot() const { return 8; }
	virtual SaveStateList listSaves(const char *target) const;
	virtual bool simpleSaveNames() const;
	virtual void removeSaveState(const char *target, int slot) const;
	virtual SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
	virtual bool createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const;
};

bool FullpipeMetaEngine::hasFeature(MetaEngineFeature f) const {
	return
		(f == kSupportsListSaves) ||
		(f == kSupportsDeleteSave) ||
		(f == kSavesSupportMetaInfo) ||
		(f == kSavesSupportThumbnail) ||
		(f == kSavesSupportCreationDate) ||
		(f == kSupportsLoadingDuringStartup);
}

SaveStateList FullpipeMetaEngine::listSaves(const char *target) const {
	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
	Common::StringArray filenames;
	Common::String pattern("fullpipe.s##");

	filenames = saveFileMan->listSavefiles(pattern);

	SaveStateList saveList;
	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
		// Obtain the last 2 digits of the filename, since they correspond to the save slot
		int slotNum = atoi(file->c_str() + file->size() - 2);

		if (slotNum >= 0 && slotNum <= getMaximumSaveSlot()) {
			Common::InSaveFile *in = saveFileMan->openForLoading(*file);
			if (in) {
				Fullpipe::FullpipeSavegameHeader header;
				Fullpipe::readSavegameHeader(in, header);
				saveList.push_back(SaveStateDescriptor(slotNum, header.saveName));
				delete header.thumbnail;
				delete in;
			}
		}
	}

	// Sort saves based on slot number.
	Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
	return saveList;
}

bool FullpipeMetaEngine::simpleSaveNames() const { return false; }

void FullpipeMetaEngine::removeSaveState(const char *target, int slot) const {
	g_system->getSavefileManager()->removeSavefile(Fullpipe::getSavegameFile(slot));
}

SaveStateDescriptor FullpipeMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
	Common::InSaveFile *f = g_system->getSavefileManager()->openForLoading(
		Fullpipe::getSavegameFile(slot));

	if (f) {
		Fullpipe::FullpipeSavegameHeader header;
		Fullpipe::readSavegameHeader(f, header);
		delete f;

		// Create the return descriptor
		SaveStateDescriptor desc(slot, header.saveName);
		desc.setThumbnail(header.thumbnail);

		return desc;
	}

	return SaveStateDescriptor();
}

bool FullpipeMetaEngine::createInstance(OSystem *syst, Engine **engine, const ADGameDescription *desc) const {
	if (desc) {
		*engine = new Fullpipe::FullpipeEngine(syst, desc);
	}
	return desc != 0;
}

#if PLUGIN_ENABLED_DYNAMIC(FULLPIPE)
	REGISTER_PLUGIN_DYNAMIC(FULLPIPE, PLUGIN_TYPE_ENGINE, FullpipeMetaEngine);
#else
	REGISTER_PLUGIN_STATIC(FULLPIPE, PLUGIN_TYPE_ENGINE, FullpipeMetaEngine);
#endif