/*
    This file is part of Android File Transfer For Linux.
    Copyright (C) 2015-2020  Vladimir Menshakov

    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 2.1 of the License,
    or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this library; if not, write to the Free Software Foundation,
    Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

#include <usb/Context.h>
#include <usb/Directory.h>
#include <mtp/log.h>
#include <map>
#include <stdio.h>

namespace mtp { namespace usb
{

	Context::Context()
	{
		std::string rootPath("/sys/bus/usb/devices");
		Directory usbDir(rootPath);
		std::map<int, std::map<std::string, DeviceDescriptorPtr> > devices;
		while(true)
		{
			std::string entry = usbDir.Read();
			if (entry.empty())
				break;

			try
			{
				unsigned busId, conf, interface;
				char portBuf[256];
				if (sscanf(entry.c_str(), "%u-%256[0-9.]:%u.%u", &busId, portBuf, &conf, &interface) == 4)
				{
					std::string port = portBuf;
					if ((port.size() == 1 && port[0] == '0'))
						continue;
					DeviceDescriptorPtr &device = devices[busId][port];
					if (!device)
					{
						char deviceRoot[64];
						snprintf(deviceRoot, sizeof(deviceRoot), "%u-%s", busId, port.c_str());
						device = std::make_shared<DeviceDescriptor>(busId, rootPath + "/" + std::string(deviceRoot));
						_devices.push_back(device);
					}
					device->AddInterface(conf, interface, rootPath + "/" + entry);
				}
			}
			catch(const std::exception &ex)
			{
				error(ex.what());
			}
		}
	}

	Context::~Context()
	{
	}


}}
