#include "cppc4group.hpp"
#include <iostream>

const char* formatTime(int32_t time)
{
	time_t tTime = time;
	static char ret[128];
	strftime(ret, sizeof(ret), "%c", localtime(&tTime));
	return ret;
}

const char* formatSize(uint32_t size)
{
	static char ret[128];
	if(size < 1000)
	{
		snprintf(ret, 128, "%4u", size);
		return ret;
	}

	static const char prefixes[] = " KMGTPE";

	const char* prefix = prefixes;
	uint32_t fract = 0;

	while(size >= 1000 && *(prefix + 1) != '\0')
	{
		++prefix;
		fract = size % 1000;
		size /= 1000;
	}

	if(size < 10)
	{
		snprintf(ret, 128, "%1.1f%c", (float)size + (float)fract / 1000, *prefix);
	}
	else
	{
		snprintf(ret, 128, "%3u%c", size, *prefix);
	}

	return ret;
}

int main(int argc, char* argv[])
{
	if(argc != 3)
	{
		std::cerr << "USAGE: " << argv[0] << " <group> <subgroup>\n";
		return EXIT_FAILURE;
	}

	CppC4Group g;
	if(!g.openExisting(argv[1]))
	{
		std::cerr << "ERROR: Can't open group: " << g.getErrorMessage() << '\n';
		return EXIT_FAILURE;
	}

	if(auto child = g.openAsChild(argv[2]))
	{
		if(auto entries = child->getEntryInfos())
		{
			for(const auto& entry : *entries)
			{
				std::cout << (entry.directory ? 'd' : entry.executable ? 'x' : ' ') << " " << formatTime(entry.modified) << ' ' << formatSize(entry.totalSize) << " " << entry.fileName << '\t' << entry.author << '\n';
			}
		}
		else
		{
			std::cerr << "ERROR: Can't list subgroup contents: " << child->getErrorMessage();
		}
	}
	else
	{
		std::cerr << "ERROR: Can't open subgroup: " << g.getErrorMessage();
		return EXIT_FAILURE;
	}
}