Add Discord support

vendor/github.com/bwmarrin/discordgo/examples/airhorn/main.go

@@ -0,0 +1,186 @@
+package main
+
+import (
+	"encoding/binary"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+func init() {
+	flag.StringVar(&token, "t", "", "Account Token")
+	flag.Parse()
+}
+
+var token string
+var buffer = make([][]byte, 0)
+
+func main() {
+	if token == "" {
+		fmt.Println("No token provided. Please run: airhorn -t <bot token>")
+		return
+	}
+
+	// Load the sound file.
+	err := loadSound()
+	if err != nil {
+		fmt.Println("Error loading sound: ", err)
+		fmt.Println("Please copy $GOPATH/src/github.com/bwmarrin/examples/airhorn/airhorn.dca to this directory.")
+		return
+	}
+
+	// Create a new Discord session using the provided token.
+	dg, err := discordgo.New(token)
+	if err != nil {
+		fmt.Println("Error creating Discord session: ", err)
+		return
+	}
+
+	// Register ready as a callback for the ready events.
+	dg.AddHandler(ready)
+
+	// Register messageCreate as a callback for the messageCreate events.
+	dg.AddHandler(messageCreate)
+
+	// Register guildCreate as a callback for the guildCreate events.
+	dg.AddHandler(guildCreate)
+
+	// Open the websocket and begin listening.
+	err = dg.Open()
+	if err != nil {
+		fmt.Println("Error opening Discord session: ", err)
+	}
+
+	fmt.Println("Airhorn is now running.  Press CTRL-C to exit.")
+	// Simple way to keep program running until CTRL-C is pressed.
+	<-make(chan struct{})
+	return
+}
+
+func ready(s *discordgo.Session, event *discordgo.Ready) {
+	// Set the playing status.
+	_ = s.UpdateStatus(0, "!airhorn")
+}
+
+// This function will be called (due to AddHandler above) every time a new
+// message is created on any channel that the autenticated bot has access to.
+func messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
+	if strings.HasPrefix(m.Content, "!airhorn") {
+		// Find the channel that the message came from.
+		c, err := s.State.Channel(m.ChannelID)
+		if err != nil {
+			// Could not find channel.
+			return
+		}
+
+		// Find the guild for that channel.
+		g, err := s.State.Guild(c.GuildID)
+		if err != nil {
+			// Could not find guild.
+			return
+		}
+
+		// Look for the message sender in that guilds current voice states.
+		for _, vs := range g.VoiceStates {
+			if vs.UserID == m.Author.ID {
+				err = playSound(s, g.ID, vs.ChannelID)
+				if err != nil {
+					fmt.Println("Error playing sound:", err)
+				}
+
+				return
+			}
+		}
+	}
+}
+
+// This function will be called (due to AddHandler above) every time a new
+// guild is joined.
+func guildCreate(s *discordgo.Session, event *discordgo.GuildCreate) {
+	if event.Guild.Unavailable != nil {
+		return
+	}
+
+	for _, channel := range event.Guild.Channels {
+		if channel.ID == event.Guild.ID {
+			_, _ = s.ChannelMessageSend(channel.ID, "Airhorn is ready! Type !airhorn while in a voice channel to play a sound.")
+			return
+		}
+	}
+}
+
+// loadSound attempts to load an encoded sound file from disk.
+func loadSound() error {
+	file, err := os.Open("airhorn.dca")
+
+	if err != nil {
+		fmt.Println("Error opening dca file :", err)
+		return err
+	}
+
+	var opuslen int16
+
+	for {
+		// Read opus frame length from dca file.
+		err = binary.Read(file, binary.LittleEndian, &opuslen)
+
+		// If this is the end of the file, just return.
+		if err == io.EOF || err == io.ErrUnexpectedEOF {
+			return nil
+		}
+
+		if err != nil {
+			fmt.Println("Error reading from dca file :", err)
+			return err
+		}
+
+		// Read encoded pcm from dca file.
+		InBuf := make([]byte, opuslen)
+		err = binary.Read(file, binary.LittleEndian, &InBuf)
+
+		// Should not be any end of file errors
+		if err != nil {
+			fmt.Println("Error reading from dca file :", err)
+			return err
+		}
+
+		// Append encoded pcm data to the buffer.
+		buffer = append(buffer, InBuf)
+	}
+}
+
+// playSound plays the current buffer to the provided channel.
+func playSound(s *discordgo.Session, guildID, channelID string) (err error) {
+	// Join the provided voice channel.
+	vc, err := s.ChannelVoiceJoin(guildID, channelID, false, true)
+	if err != nil {
+		return err
+	}
+
+	// Sleep for a specified amount of time before playing the sound
+	time.Sleep(250 * time.Millisecond)
+
+	// Start speaking.
+	_ = vc.Speaking(true)
+
+	// Send the buffer data.
+	for _, buff := range buffer {
+		vc.OpusSend <- buff
+	}
+
+	// Stop speaking
+	_ = vc.Speaking(false)
+
+	// Sleep for a specificed amount of time before ending.
+	time.Sleep(250 * time.Millisecond)
+
+	// Disconnect from the provided voice channel.
+	_ = vc.Disconnect()
+
+	return nil
+}

vendor/github.com/bwmarrin/discordgo/examples/appmaker/main.go

@@ -0,0 +1,98 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// Variables used for command line options
+var (
+	Email    string
+	Password string
+	Token    string
+	AppName  string
+	DeleteID string
+	ListOnly bool
+)
+
+func init() {
+
+	flag.StringVar(&Email, "e", "", "Account Email")
+	flag.StringVar(&Password, "p", "", "Account Password")
+	flag.StringVar(&Token, "t", "", "Account Token")
+	flag.StringVar(&DeleteID, "d", "", "Application ID to delete")
+	flag.BoolVar(&ListOnly, "l", false, "List Applications Only")
+	flag.StringVar(&AppName, "a", "", "App/Bot Name")
+	flag.Parse()
+}
+
+func main() {
+
+	var err error
+	// Create a new Discord session using the provided login information.
+	dg, err := discordgo.New(Email, Password, Token)
+	if err != nil {
+		fmt.Println("error creating Discord session,", err)
+		return
+	}
+
+	// If -l set, only display a list of existing applications
+	// for the given account.
+	if ListOnly {
+		aps, err2 := dg.Applications()
+		if err2 != nil {
+			fmt.Println("error fetching applications,", err)
+			return
+		}
+
+		for k, v := range aps {
+			fmt.Printf("%d : --------------------------------------\n", k)
+			fmt.Printf("ID: %s\n", v.ID)
+			fmt.Printf("Name: %s\n", v.Name)
+			fmt.Printf("Secret: %s\n", v.Secret)
+			fmt.Printf("Description: %s\n", v.Description)
+		}
+		return
+	}
+
+	// if -d set, delete the given Application
+	if DeleteID != "" {
+		err = dg.ApplicationDelete(DeleteID)
+		if err != nil {
+			fmt.Println("error deleting application,", err)
+		}
+		return
+	}
+
+	// Create a new application.
+	ap := &discordgo.Application{}
+	ap.Name = AppName
+	ap, err = dg.ApplicationCreate(ap)
+	if err != nil {
+		fmt.Println("error creating new applicaiton,", err)
+		return
+	}
+
+	fmt.Printf("Application created successfully:\n")
+	fmt.Printf("ID: %s\n", ap.ID)
+	fmt.Printf("Name: %s\n", ap.Name)
+	fmt.Printf("Secret: %s\n\n", ap.Secret)
+
+	// Create the bot account under the application we just created
+	bot, err := dg.ApplicationBotCreate(ap.ID)
+	if err != nil {
+		fmt.Println("error creating bot account,", err)
+		return
+	}
+
+	fmt.Printf("Bot account created successfully.\n")
+	fmt.Printf("ID: %s\n", bot.ID)
+	fmt.Printf("Username: %s\n", bot.Username)
+	fmt.Printf("Token: %s\n\n", bot.Token)
+	fmt.Println("Please save the above posted info in a secure place.")
+	fmt.Println("You will need that information to login with your bot account.")
+
+	return
+}

vendor/github.com/bwmarrin/discordgo/examples/avatar/localfile/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"encoding/base64"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// Variables used for command line parameters
+var (
+	Email       string
+	Password    string
+	Token       string
+	Avatar      string
+	BotID       string
+	BotUsername string
+)
+
+func init() {
+
+	flag.StringVar(&Email, "e", "", "Account Email")
+	flag.StringVar(&Password, "p", "", "Account Password")
+	flag.StringVar(&Token, "t", "", "Account Token")
+	flag.StringVar(&Avatar, "f", "./avatar.jpg", "Avatar File Name")
+	flag.Parse()
+}
+
+func main() {
+
+	// Create a new Discord session using the provided login information.
+	// Use discordgo.New(Token) to just use a token for login.
+	dg, err := discordgo.New(Email, Password, Token)
+	if err != nil {
+		fmt.Println("error creating Discord session,", err)
+		return
+	}
+
+	bot, err := dg.User("@me")
+	if err != nil {
+		fmt.Println("error fetching the bot details,", err)
+		return
+	}
+
+	BotID = bot.ID
+	BotUsername = bot.Username
+	changeAvatar(dg)
+
+	fmt.Println("Bot is now running.  Press CTRL-C to exit.")
+	// Simple way to keep program running until CTRL-C is pressed.
+	<-make(chan struct{})
+	return
+}
+
+// Helper function to change the avatar
+func changeAvatar(s *discordgo.Session) {
+	img, err := ioutil.ReadFile(Avatar)
+	if err != nil {
+		fmt.Println(err)
+	}
+
+	base64 := base64.StdEncoding.EncodeToString(img)
+
+	avatar := fmt.Sprintf("data:%s;base64,%s", http.DetectContentType(img), base64)
+
+	_, err = s.UserUpdate("", "", BotUsername, avatar, "")
+	if err != nil {
+		fmt.Println(err)
+	}
+}

vendor/github.com/bwmarrin/discordgo/examples/avatar/url/main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"encoding/base64"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// Variables used for command line parameters
+var (
+	Email       string
+	Password    string
+	Token       string
+	URL         string
+	BotID       string
+	BotUsername string
+)
+
+func init() {
+
+	flag.StringVar(&Email, "e", "", "Account Email")
+	flag.StringVar(&Password, "p", "", "Account Password")
+	flag.StringVar(&Token, "t", "", "Account Token")
+	flag.StringVar(&URL, "l", "http://bwmarrin.github.io/discordgo/img/discordgo.png", "Link to the avatar image")
+	flag.Parse()
+}
+
+func main() {
+
+	// Create a new Discord session using the provided login information.
+	// Use discordgo.New(Token) to just use a token for login.
+	dg, err := discordgo.New(Email, Password, Token)
+	if err != nil {
+		fmt.Println("error creating Discord session,", err)
+		return
+	}
+
+	bot, err := dg.User("@me")
+	if err != nil {
+		fmt.Println("error fetching the bot details,", err)
+		return
+	}
+
+	BotID = bot.ID
+	BotUsername = bot.Username
+	changeAvatar(dg)
+
+	fmt.Println("Bot is now running.  Press CTRL-C to exit.")
+	// Simple way to keep program running until CTRL-C is pressed.
+	<-make(chan struct{})
+	return
+}
+
+// Helper function to change the avatar
+func changeAvatar(s *discordgo.Session) {
+
+	resp, err := http.Get(URL)
+	if err != nil {
+		fmt.Println("Error retrieving the file, ", err)
+		return
+	}
+
+	defer func() {
+		_ = resp.Body.Close()
+	}()
+
+	img, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		fmt.Println("Error reading the response, ", err)
+		return
+	}
+
+	base64 := base64.StdEncoding.EncodeToString(img)
+
+	avatar := fmt.Sprintf("data:%s;base64,%s", http.DetectContentType(img), base64)
+
+	_, err = s.UserUpdate("", "", BotUsername, avatar, "")
+	if err != nil {
+		fmt.Println("Error setting the avatar, ", err)
+	}
+
+}

vendor/github.com/bwmarrin/discordgo/examples/mytoken/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// Variables used for command line parameters
+var (
+	Email    string
+	Password string
+)
+
+func init() {
+
+	flag.StringVar(&Email, "e", "", "Account Email")
+	flag.StringVar(&Password, "p", "", "Account Password")
+	flag.Parse()
+}
+
+func main() {
+
+	// Create a new Discord session using the provided login information.
+	dg, err := discordgo.New(Email, Password)
+	if err != nil {
+		fmt.Println("error creating Discord session,", err)
+		return
+	}
+
+	fmt.Printf("Your Authentication Token is:\n\n%s\n", dg.Token)
+}

vendor/github.com/bwmarrin/discordgo/examples/new_basic/main.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"time"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// Variables used for command line parameters
+var (
+	Email    string
+	Password string
+	Token    string
+)
+
+func init() {
+
+	flag.StringVar(&Email, "e", "", "Account Email")
+	flag.StringVar(&Password, "p", "", "Account Password")
+	flag.StringVar(&Token, "t", "", "Account Token")
+	flag.Parse()
+}
+
+func main() {
+
+	// Create a new Discord session using the provided login information.
+	// Use discordgo.New(Token) to just use a token for login.
+	dg, err := discordgo.New(Email, Password, Token)
+	if err != nil {
+		fmt.Println("error creating Discord session,", err)
+		return
+	}
+
+	// Register messageCreate as a callback for the messageCreate events.
+	dg.AddHandler(messageCreate)
+
+	// Open the websocket and begin listening.
+	err = dg.Open()
+	if err != nil {
+		fmt.Println("error opening connection,", err)
+		return
+	}
+
+	fmt.Println("Bot is now running.  Press CTRL-C to exit.")
+	// Simple way to keep program running until CTRL-C is pressed.
+	<-make(chan struct{})
+	return
+}
+
+// This function will be called (due to AddHandler above) every time a new
+// message is created on any channel that the autenticated bot has access to.
+func messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
+
+	// Print message to stdout.
+	fmt.Printf("%20s %20s %20s > %s\n", m.ChannelID, time.Now().Format(time.Stamp), m.Author.Username, m.Content)
+}

vendor/github.com/bwmarrin/discordgo/examples/pingpong/main.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// Variables used for command line parameters
+var (
+	Email    string
+	Password string
+	Token    string
+	BotID    string
+)
+
+func init() {
+
+	flag.StringVar(&Email, "e", "", "Account Email")
+	flag.StringVar(&Password, "p", "", "Account Password")
+	flag.StringVar(&Token, "t", "", "Account Token")
+	flag.Parse()
+}
+
+func main() {
+
+	// Create a new Discord session using the provided login information.
+	dg, err := discordgo.New(Email, Password, Token)
+	if err != nil {
+		fmt.Println("error creating Discord session,", err)
+		return
+	}
+
+	// Get the account information.
+	u, err := dg.User("@me")
+	if err != nil {
+		fmt.Println("error obtaining account details,", err)
+	}
+
+	// Store the account ID for later use.
+	BotID = u.ID
+
+	// Register messageCreate as a callback for the messageCreate events.
+	dg.AddHandler(messageCreate)
+
+	// Open the websocket and begin listening.
+	err = dg.Open()
+	if err != nil {
+		fmt.Println("error opening connection,", err)
+		return
+	}
+
+	fmt.Println("Bot is now running.  Press CTRL-C to exit.")
+	// Simple way to keep program running until CTRL-C is pressed.
+	<-make(chan struct{})
+	return
+}
+
+// This function will be called (due to AddHandler above) every time a new
+// message is created on any channel that the autenticated bot has access to.
+func messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
+
+	// Ignore all messages created by the bot itself
+	if m.Author.ID == BotID {
+		return
+	}
+
+	// If the message is "ping" reply with "Pong!"
+	if m.Content == "ping" {
+		_, _ = s.ChannelMessageSend(m.ChannelID, "Pong!")
+	}
+
+	// If the message is "pong" reply with "Ping!"
+	if m.Content == "pong" {
+		_, _ = s.ChannelMessageSend(m.ChannelID, "Ping!")
+	}
+}