videos/OneLoneCoder_LogitechG13Twitch.cpp

/*
	OneLoneCoder.com - Program a Logitech Keyboard To Display Twitch Chat
	"Put Your Money Where Your Mouth Is" - @Javidx9
	
	Disclaimer
	~~~~~~~~~~
	I don't care what you use this for. It's intended to be educational, and perhaps
	to the oddly minded - a little bit of fun. Please hack this, change it and use it
	in any way you see fit. BUT, you acknowledge that I am not responsible for anything
	bad that happens as a result of your actions. However, if good stuff happens, I
	would appreciate a shout out, or at least give the blog some publicity for me.
	Cheers!
	
	Background
	~~~~~~~~~~
	A very minimal example of using the Logitech SDK to interface with a keyboard display,
	then uses a really sloppy implementation of sockets, to connect to a twitch chat
	session, displaying the chat on the keybaord screen.
	
	Future Modifications
	~~~~~~~~~~~~~~~~~~~~
	1) Wrap around text display on screen
	
	Author
	~~~~~~
	Twitter: @javidx9
	Blog: www.onelonecoder.com
	
	Video:
	~~~~~~
	https://youtu.be/8UXCo-GhiF0
	
	Last Updated: 23/05/2017
*/

#include <iostream>
#include <list>
using namespace std;

// Include Winsock
#include <winsock2.h>
#include <ws2tcpip.h>

// Include Logitech library
#include "LogitechLCDLib.h"

int main()
{
	// Load the driver
	LogiLcdInit(L"OneLoneCoder Test", LOGI_LCD_TYPE_MONO);

	// Check hardware is connected
	if (!LogiLcdIsConnected(LOGI_LCD_TYPE_MONO))
		wcout << "Hardware not found" << endl;

	// Load WinSock
	WSADATA wsaData;
	if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
		wcout << "Could not start WinSock" << endl;

	// Get address to twitch server
	struct addrinfo *addr = nullptr;
	if (getaddrinfo("irc.chat.twitch.tv", "6667", nullptr, &addr) != 0)
		wcout << "Failed to get address info" << endl;

	// Create socket
	SOCKET sock = INVALID_SOCKET;
	sock = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);

	// Connect to server via socket
	int i = connect(sock, addr->ai_addr, (int)addr->ai_addrlen);
	if (i != SOCKET_ERROR)
	{
		// Handshake with twitch
		string s;

		// Authenticate
		s = "PASS oauth:###INSERT YOUR OAUTH HERE###\r\n";
		send(sock, s.c_str(), s.length(), 0);

		// Register your twitch name
		s = "NICK javidx9\r\n";
		send(sock, s.c_str(), s.length(), 0);

		// Join a twitch chat
		s = "JOIN #javidx9\r\n";
		send(sock, s.c_str(), s.length(), 0);
	}
	
	char buffer[100];
	string s;
	list<string> sLines = { "","","","" };

	while (1)
	{
		// Get Twitch Server Message
		int i = recv(sock, buffer, 100, 0);
		for (int j = 0; j < i; j++)
		{
			s.append(1, buffer[j]);
			if (buffer[j] == '\n')
			{
				// User name is between first ':' and '!'. 
				// User chat is after second ':'
				size_t m = s.find('!');
				string sUserName = s.substr(1, m - 1);
				size_t n = s.find(':', m);
				if (n != string::npos)
				{
					string chat = s.substr(n + 1);
					cout << sUserName.c_str() << ": " << chat.c_str() << endl;

					sLines.pop_front();
					sLines.push_back(sUserName + ": " + chat);
				}
				s.clear();
			}
		}

		// Display 4 lines of text from list
		int p = 0;
		for (auto k : sLines)
		{
			wstring ws;
			ws.assign(k.begin(), k.end());
			LogiLcdMonoSetText(p, (wchar_t*)ws.c_str()); // yuck...
			p++;

		}

		// Update display
		LogiLcdUpdate();
	}

	LogiLcdShutdown();
	return 0;
}