Start some code organization

main.go

@@ -4,46 +4,31 @@ import (
 	"fmt"
 	"log"
 	"os"
-	"os/exec"
 	"os/signal"
 	"syscall"
 	"time"
 
+	"git.thegrind.dev/thegrind/papibot/pkg/bot"
 	"git.thegrind.dev/thegrind/papibot/pkg/opusframes"
+	"git.thegrind.dev/thegrind/papibot/pkg/youtube"
 	dg "github.com/bwmarrin/discordgo"
 	"github.com/javif89/dotenv"
 )
 
-var commandHandlers = map[string]func(s *dg.Session, i *dg.InteractionCreate){
-	"play": playCommand,
-}
 
 func main() {
 	env := dotenv.Load(".env")
 	botToken := env.Get("DISCORD_BOT_TOKEN")
+	appId := env.Get("DISCORD_APP_ID")
+
+	bot := bot.New(botToken, appId)
 	log.Println("Starting bot")
-
+	err := bot.Start()
-	var discord *dg.Session
-	var err error
-
-	discord, err = dg.New(fmt.Sprintf("Bot %s", botToken))
-
-	if err != nil {
 	log.Println("Error starting the bot", err)
-		return
-	}
 
-	discord.AddHandler(ready)
+	log.Println("Adding command handlers")
-
+	bot.AddSlashCommand("play", playCommand)
-	discord.Identify.Intents = dg.IntentsGuilds | dg.IntentsGuildMessages | dg.IntentsGuildVoiceStates
+	log.Println("Done")
-
-	err = discord.Open()
-	if err != nil {
-		log.Println("Error opening Discord session: ", err)
-	}
-
-	// Register slash commands
-	discord.AddHandler(handleSlashCommand)
 
 	log.Println("Bot is running. Press CTRL+C to exit.")
 	sc := make(chan os.Signal, 1)
@@ -51,15 +36,7 @@ func main() {
 	<-sc
 
 	log.Println("Bot is exiting...")
-	log.Println("Removing commands")
+	bot.Stop()
-
-	appId := env.Get("DISCORD_APP_ID")
-	cmds, _ := discord.ApplicationCommands(appId, "338782945110392832")
-	for _, cmd := range cmds {
-		discord.ApplicationCommandDelete(appId, "338782945110392832", cmd.ID)
-	}
-
-	discord.Close()
 	log.Println("Goodbye!")
 }
 
@@ -75,7 +52,12 @@ func playCommand(s *dg.Session, i *dg.InteractionCreate) {
 		},
 	})
 
-	downloadVideo(url)
+	os.Remove("vid.webm")
+	youtube.Download(url, "vid.webm")
+	start := time.Now()
+	opusframes.Encode("vid.webm", "vid.of")
+	duration := time.Since(start)
+	log.Printf("Encoding took: %s", duration)
 
 	// Get the channel
 	msgServer, err := s.State.Guild(i.GuildID)
@@ -131,61 +113,3 @@ func playOnVoiceChannel(voiceChannel *dg.VoiceConnection) {
 		voiceChannel.OpusSend <- p
 	}
 }
-
-func handleSlashCommand(s *dg.Session, i *dg.InteractionCreate) {
-	log.Println("Command received?")
-	if h, ok := commandHandlers[i.ApplicationCommandData().Name]; ok {
-		h(s, i)
-	}
-}
-
-func ready(s *dg.Session, event *dg.Ready) {
-	commands := []*dg.ApplicationCommand{
-		{
-			Name:        "play",
-			Description: "Play a song from youtube, spotify, apple music, etc",
-			Options: []*dg.ApplicationCommandOption{
-				{
-					Type:        dg.ApplicationCommandOptionString,
-					Name:        "url",
-					Description: "URL to the song",
-					Required:    true,
-				},
-			},
-		},
-	}
-
-	env := dotenv.Load(".env")
-	appId := env.Get("DISCORD_APP_ID")
-
-	log.Println("Bot is ready")
-	log.Println("Bulk registering commands")
-	_, err := s.ApplicationCommandBulkOverwrite(appId, "338782945110392832", commands)
-	if err != nil {
-		log.Fatal(err)
-	}
-	log.Println("Done")
-}
-
-func downloadVideo(url string) error {
-	log.Printf("Downloading: %s", url)
-	os.Remove("vid.webm")
-	cmd := exec.Command(
-		"yt-dlp",
-		"-i",
-		"-q",
-		"-f", "bestaudio",
-		"-o",
-		"vid.%(ext)s",
-		url)
-
-	err := cmd.Run()
-	log.Println("Downloaded")
-
-	start := time.Now()
-	opusframes.Encode("vid.webm", "vid.of")
-	duration := time.Since(start)
-	log.Printf("Encoding took: %s", duration)
-
-	return err
-}

pkg/bot/bot.go

@@ -0,0 +1,97 @@
+package bot
+
+import (
+	"fmt"
+	"log"
+	dg "github.com/bwmarrin/discordgo"
+)
+
+type Bot struct {
+	token string
+	appId string
+	isPlaying bool
+	session *dg.Session
+	slashCommands map[string]func(s *dg.Session, i *dg.InteractionCreate)
+}
+
+func New(token, appId string) *Bot {
+	return &Bot{
+		token: token,
+		appId: appId,
+		slashCommands: make(map[string]func(s *dg.Session, i *dg.InteractionCreate)),
+	}
+}
+
+// TODO: Let's get some custom error types going
+// at some point
+func (b *Bot) Start() error {
+	var err error
+
+	b.session, err = dg.New(fmt.Sprintf("Bot %s", b.token))
+
+	if err != nil {
+		return err
+	}
+
+	b.session.AddHandler(b.ready)
+
+	b.session.Identify.Intents = dg.IntentsGuilds | dg.IntentsGuildMessages | dg.IntentsGuildVoiceStates
+
+	err = b.session.Open()
+	if err != nil {
+		return err
+	}
+
+	// Register slash commands
+	b.session.AddHandler(b.handleSlashCommand)
+
+	return nil
+}
+
+// TODO: Don't hard code the server. We can
+// register the commands globally
+func (b *Bot) Stop() {
+	cmds, _ := b.session.ApplicationCommands(b.appId, "338782945110392832")
+	for _, cmd := range cmds {
+		b.session.ApplicationCommandDelete(b.appId, "338782945110392832", cmd.ID)
+	}
+
+	b.session.Close()
+}
+
+func (b *Bot) AddSlashCommand(name string, handler func(*dg.Session, *dg.InteractionCreate)) {
+	b.slashCommands[name] = handler
+}
+
+
+func (b *Bot) handleSlashCommand(s *dg.Session, i *dg.InteractionCreate) {
+	log.Println("Command received?")
+	if h, ok := b.slashCommands[i.ApplicationCommandData().Name]; ok {
+		h(s, i)
+	}
+}
+
+func (b *Bot) ready(s *dg.Session, event *dg.Ready) {
+	commands := []*dg.ApplicationCommand{
+		{
+			Name:        "play",
+			Description: "Play a song from youtube, spotify, apple music, etc",
+			Options: []*dg.ApplicationCommandOption{
+				{
+					Type:        dg.ApplicationCommandOptionString,
+					Name:        "url",
+					Description: "URL to the song",
+					Required:    true,
+				},
+			},
+		},
+	}
+
+	log.Println("Bot is ready")
+	log.Println("Bulk registering commands")
+	_, err := s.ApplicationCommandBulkOverwrite(b.appId, "338782945110392832", commands)
+	if err != nil {
+		log.Fatal(err)
+	}
+	log.Println("Done")
+}

pkg/youtube/youtube.go

@@ -0,0 +1,24 @@
+package youtube
+
+import (
+	"os/exec"
+)
+
+func Download(url, outPath string) error {
+	cmd := exec.Command(
+		"yt-dlp",
+		"-i",
+		"-q",
+		"-f", "bestaudio",
+		"-o",
+		outPath,
+		url)
+
+	err := cmd.Run()
+
+	if err != nil {
+		return err
+	}
+
+	return err
+}