main.go

package main

import (
	"fmt"
	irc "github.com/fluffle/goirc/client"
	"github.com/laurent22/toml-go"
	"github.com/vevix/twitch-plays/win32"
	"time"
)

type Twitch struct {
	host    string
	user    string
	token   string
	channel string
}

type Input struct {
	user    string
	message string
	key     uint16
}

var (
	validKeys = map[string]uint16{
		"a":     win32.VK_X,
		"b":     win32.VK_Z,
		"x":     win32.VK_S,
		"y":     win32.VK_A,
		"up":    win32.VK_UP,
		"left":  win32.VK_LEFT,
		"down":  win32.VK_DOWN,
		"right": win32.VK_RIGHT,
	}
)

func inputHandler(in <-chan Input) {
	for {
		input := <-in
		fmt.Printf("Handling: %v - %v\n", input.user, input.message)

		win32.SendInput(win32.INPUT{
			Type: win32.INPUT_KEYBOARD,
			Ki: win32.KEYBDINPUT{
				WVk:     input.key,
				DwFlags: win32.KEYEVENTF_KEYDOWN,
			},
		})

		time.Sleep(200 * time.Millisecond)

		win32.SendInput(win32.INPUT{
			Type: win32.INPUT_KEYBOARD,
			Ki: win32.KEYBDINPUT{
				WVk:     input.key,
				DwFlags: win32.KEYEVENTF_KEYUP,
			},
		})
	}
}

func main() {
	var p toml.Parser
	d := p.ParseFile("config/app.conf")
	twitch := Twitch{
		host:    d.GetString("twitch.host"),
		user:    d.GetString("twitch.user"),
		token:   d.GetString("twitch.token"),
		channel: "#" + d.GetString("twitch.channel"),
	}

	in := make(chan Input)
	go inputHandler(in)

	// make sure emulator window is open
	h := win32.FindWindow("DeSmuME", "DeSmuME 0.9.10 x64")
	if h == nil {
		panic("Couldn't find emulator window.")
	}
	fmt.Printf("Emulator Window: %v\n", h)

	// connect to TwitchTV chat
	c := irc.SimpleClient(twitch.user)

	c.AddHandler("connected", func(conn *irc.Conn, line *irc.Line) {
		c.Join(twitch.channel)
	})

	quit := make(chan bool)
	c.AddHandler("disconnected", func(conn *irc.Conn, line *irc.Line) {
		quit <- true
	})

	c.AddHandler("privmsg", func(conn *irc.Conn, line *irc.Line) {
		if line.Args[0] != twitch.channel {
			return
		}

		user, message := line.Nick, line.Args[1]
		key, ok := validKeys[message]
		if !ok {
			return
		}

		in <- Input{
			user:    user,
			message: message,
			key:     key,
		}
	})

	if err := c.Connect(twitch.host, twitch.token); err != nil {
		panic("Couldn't connect to TwitchTV.")
	}

	// keep the connection alive
	<-quit
}