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/*
  Copyright (c) 2013 Arduino LLC. All right reserved.
  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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include <BridgeClient.h>

BridgeClient::BridgeClient(uint8_t _h, BridgeClass &_b) :
  bridge(_b), handle(_h), opened(true), buffered(0) {
}

BridgeClient::BridgeClient(BridgeClass &_b) :
  bridge(_b), handle(0), opened(false), buffered(0) {
}

BridgeClient::~BridgeClient() {
}

BridgeClient& BridgeClient::operator=(const BridgeClient &_x) {
  opened = _x.opened;
  handle = _x.handle;
  return *this;
}

void BridgeClient::stop() {
  if (opened) {
    uint8_t cmd[] = {'j', handle};
    bridge.transfer(cmd, 2);
  }
  opened = false;
  buffered = 0;
  readPos = 0;
}

void BridgeClient::doBuffer() {
  // If there are already char in buffer exit
  if (buffered > 0)
    return;

  // Try to buffer up to 32 characters
  readPos = 0;
  uint8_t cmd[] = {'K', handle, sizeof(buffer)};
  buffered = bridge.transfer(cmd, 3, buffer, sizeof(buffer));
}

int BridgeClient::available() {
  // Look if there is new data available
  doBuffer();
  return buffered;
}

int BridgeClient::read() {
  doBuffer();
  if (buffered == 0)
    return -1; // no chars available
  else {
    buffered--;
    return buffer[readPos++];
  }
}

int BridgeClient::read(uint8_t *buff, size_t size) {
  size_t readed = 0;
  do {
    if (buffered == 0) {
      doBuffer();
      if (buffered == 0)
        return readed;
    }
    buff[readed++] = buffer[readPos++];
    buffered--;
  } while (readed < size);
  return readed;
}

int BridgeClient::peek() {
  doBuffer();
  if (buffered == 0)
    return -1; // no chars available
  else
    return buffer[readPos];
}

size_t BridgeClient::write(uint8_t c) {
  if (!opened)
    return 0;
  uint8_t cmd[] = {'l', handle, c};
  bridge.transfer(cmd, 3);
  return 1;
}

size_t BridgeClient::write(const uint8_t *buf, size_t size) {
  if (!opened)
    return 0;
  uint8_t cmd[] = {'l', handle};
  bridge.transfer(cmd, 2, buf, size, NULL, 0);
  return size;
}

void BridgeClient::flush() {
}

uint8_t BridgeClient::connected() {
  if (!opened)
    return false;
  // Client is "connected" if it has unread bytes
  if (available())
    return true;

  uint8_t cmd[] = {'L', handle};
  uint8_t res[1];
  bridge.transfer(cmd, 2, res, 1);
  return (res[0] == 1);
}

int BridgeClient::connect(IPAddress ip, uint16_t port) {
  String address;
  address.reserve(18);
  address += ip[0];
  address += '.';
  address += ip[1];
  address += '.';
  address += ip[2];
  address += '.';
  address += ip[3];
  return connect(address.c_str(), port);
}

int BridgeClient::connect(const char *host, uint16_t port) {
  uint8_t tmp[] = {
    'C',
    static_cast<uint8_t>(port >> 8),
    static_cast<uint8_t>(port)
  };
  uint8_t res[1];
  int l = bridge.transfer(tmp, 3, (const uint8_t *)host, strlen(host), res, 1);
  if (l == 0)
    return 0;
  handle = res[0];

  // wait for connection
  uint8_t tmp2[] = { 'c', handle };
  uint8_t res2[1];
  while (true) {
    bridge.transfer(tmp2, 2, res2, 1);
    if (res2[0] == 0)
      break;
    delay(1);
  }
  opened = true;

  // check for successful connection
  if (connected())
    return 1;

  stop();
  handle = 0;
  return 0;
}

int BridgeClient::connectSSL(const char *host, uint16_t port) {
  if (bridge.getBridgeVersion() < 161)
    return -1;

  uint8_t tmp[] = {
    'Z',
    static_cast<uint8_t>(port >> 8),
    static_cast<uint8_t>(port)
  };
  uint8_t res[1];
  int l = bridge.transfer(tmp, 3, (const uint8_t *)host, strlen(host), res, 1);
  if (l == 0)
    return 0;
  handle = res[0];

  // wait for connection
  uint8_t tmp2[] = { 'c', handle };
  uint8_t res2[1];
  while (true) {
    bridge.transfer(tmp2, 2, res2, 1);
    if (res2[0] == 0)
      break;
    delay(1);
  }
  opened = true;

  // check for successful connection
  if (connected())
    return 1;

  stop();
  handle = 0;
  return 0;
}

	/*
	Copyright (c) 2013 Arduino LLC. All right reserved.

	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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <BridgeClient.h>

	BridgeClient::BridgeClient(uint8_t _h, BridgeClass &_b) :
	bridge(_b), handle(_h), opened(true), buffered(0) {
	}

	BridgeClient::BridgeClient(BridgeClass &_b) :
	bridge(_b), handle(0), opened(false), buffered(0) {
	}

	BridgeClient::~BridgeClient() {
	}

	BridgeClient& BridgeClient::operator=(const BridgeClient &_x) {
	opened = _x.opened;
	handle = _x.handle;
	return *this;
	}

	void BridgeClient::stop() {
	if (opened) {
	uint8_t cmd[] = {'j', handle};
	bridge.transfer(cmd, 2);
	}
	opened = false;
	buffered = 0;
	readPos = 0;
	}

	void BridgeClient::doBuffer() {
	// If there are already char in buffer exit
	if (buffered > 0)
	return;

	// Try to buffer up to 32 characters
	readPos = 0;
	uint8_t cmd[] = {'K', handle, sizeof(buffer)};
	buffered = bridge.transfer(cmd, 3, buffer, sizeof(buffer));
	}

	int BridgeClient::available() {
	// Look if there is new data available
	doBuffer();
	return buffered;
	}

	int BridgeClient::read() {
	doBuffer();
	if (buffered == 0)
	return -1; // no chars available
	else {
	buffered--;
	return buffer[readPos++];
	}
	}

	int BridgeClient::read(uint8_t *buff, size_t size) {
	size_t readed = 0;
	do {
	if (buffered == 0) {
	doBuffer();
	if (buffered == 0)
	return readed;
	}
	buff[readed++] = buffer[readPos++];
	buffered--;
	} while (readed < size);
	return readed;
	}

	int BridgeClient::peek() {
	doBuffer();
	if (buffered == 0)
	return -1; // no chars available
	else
	return buffer[readPos];
	}

	size_t BridgeClient::write(uint8_t c) {
	if (!opened)
	return 0;
	uint8_t cmd[] = {'l', handle, c};
	bridge.transfer(cmd, 3);
	return 1;
	}

	size_t BridgeClient::write(const uint8_t *buf, size_t size) {
	if (!opened)
	return 0;
	uint8_t cmd[] = {'l', handle};
	bridge.transfer(cmd, 2, buf, size, NULL, 0);
	return size;
	}

	void BridgeClient::flush() {
	}

	uint8_t BridgeClient::connected() {
	if (!opened)
	return false;
	// Client is "connected" if it has unread bytes
	if (available())
	return true;

	uint8_t cmd[] = {'L', handle};
	uint8_t res[1];
	bridge.transfer(cmd, 2, res, 1);
	return (res[0] == 1);
	}

	int BridgeClient::connect(IPAddress ip, uint16_t port) {
	String address;
	address.reserve(18);
	address += ip[0];
	address += '.';
	address += ip[1];
	address += '.';
	address += ip[2];
	address += '.';
	address += ip[3];
	return connect(address.c_str(), port);
	}

	int BridgeClient::connect(const char *host, uint16_t port) {
	uint8_t tmp[] = {
	'C',
	static_cast<uint8_t>(port >> 8),
	static_cast<uint8_t>(port)
	};
	uint8_t res[1];
	int l = bridge.transfer(tmp, 3, (const uint8_t *)host, strlen(host), res, 1);
	if (l == 0)
	return 0;
	handle = res[0];

	// wait for connection
	uint8_t tmp2[] = { 'c', handle };
	uint8_t res2[1];
	while (true) {
	bridge.transfer(tmp2, 2, res2, 1);
	if (res2[0] == 0)
	break;
	delay(1);
	}
	opened = true;

	// check for successful connection
	if (connected())
	return 1;

	stop();
	handle = 0;
	return 0;
	}

	int BridgeClient::connectSSL(const char *host, uint16_t port) {
	if (bridge.getBridgeVersion() < 161)
	return -1;

	uint8_t tmp[] = {
	'Z',
	static_cast<uint8_t>(port >> 8),
	static_cast<uint8_t>(port)
	};
	uint8_t res[1];
	int l = bridge.transfer(tmp, 3, (const uint8_t *)host, strlen(host), res, 1);
	if (l == 0)
	return 0;
	handle = res[0];

	// wait for connection
	uint8_t tmp2[] = { 'c', handle };
	uint8_t res2[1];
	while (true) {
	bridge.transfer(tmp2, 2, res2, 1);
	if (res2[0] == 0)
	break;
	delay(1);
	}
	opened = true;

	// check for successful connection
	if (connected())
	return 1;

	stop();
	handle = 0;
	return 0;
	}