#include "AvFormat.hpp"

#include <boost/foreach.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>

#include "av/InputFormatContext.hpp"

#include "Utils.hpp"

namespace MetaData
{

void
AvFormat::parse(const boost::filesystem::path& p, Items& items)
{

	try {

		Av::InputFormatContext input(p);
		input.findStreamInfo(); // needed by input.getDurationSecs

		std::cout << "Processing file '" << p << "'" << std::endl;

		std::map<std::string, std::string> metadata;
		input.getMetadata().get(metadata);

		// HACK or OGG files
		// If we did not find tags, searched metadata in streams
		if (metadata.empty())
		{
			// Get input streams
			std::vector<Av::Stream> streams = input.getStreams();

			BOOST_FOREACH(Av::Stream& stream, streams) {
				stream.getMetadata().get(metadata);

				if (!metadata.empty())
					break;
			}
		}

		std::cout << "Found " << metadata.size() << " tags!" << std::endl;

		items.insert( std::make_pair(MetaData::Duration, boost::posix_time::time_duration( boost::posix_time::seconds( input.getDurationSecs() )) ));

		std::map<std::string, std::string>::const_iterator it;
		for (it = metadata.begin(); it != metadata.end(); ++it)
		{
			if (boost::iequals(it->first, "artist"))
				items.insert( std::make_pair(MetaData::Artist, it->second ));
			else if (boost::iequals(it->first, "album"))
				items.insert( std::make_pair(MetaData::Album, it->second ));
			else if (boost::iequals(it->first, "title"))
				items.insert( std::make_pair(MetaData::Title, it->second ));
			else if (boost::iequals(it->first, "track")) {
				std::size_t number;
				if (readAs<std::size_t>(it->second, number))
					items.insert( std::make_pair(MetaData::TrackNumber, number ));
			}
			else if (boost::iequals(it->first, "disc"))
			{
				std::size_t number;
				if (readAs<std::size_t>(it->second, number))
					items.insert( std::make_pair(MetaData::DiscNumber, number ));
			}
			else if (boost::iequals(it->first, "date")
				|| boost::iequals(it->first, "year")
				|| boost::iequals(it->first, "WM/Year")
				|| boost::iequals(it->first, "TDOR")	// Original date fallback
				|| boost::iequals(it->first, "TORY")	// Original date fallback
				)
			{
				boost::posix_time::ptime p;
				if (readAsPosixTime(it->second, p))
					items.insert( std::make_pair(MetaData::CreationTime, p));
			}
			else if (boost::iequals(it->first, "genre"))
			{
				std::list<std::string> genres;
				if (readList(it->second, ";,", genres))
					items.insert( std::make_pair(MetaData::Genre, genres));

			}
/*			else
				std::cout << "key = " << it->first << ", value = " << it->second << std::endl;
*/
		}

	}
	catch(std::exception &e)
	{
		std::cerr << "Parsing of '" << p << "' failed!" << std::endl;
	}


}

} // namespace MetaData