Refactored handlers and command handlers

There was a false error reported when the configuration file was found

.golangci.yml

@@ -0,0 +1,4 @@
+---
+linters:
+  disable:
+    - errcheck

Dockerfile

@@ -6,4 +6,6 @@ RUN CGO_ENABLED=0 go build ./cmd/bb
 FROM scratch AS bin
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=build /src/bb /
+ADD https://raw.githubusercontent.com/golang/go/master/lib/time/zoneinfo.zip /zoneinfo.zip
+ENV ZONEINFO /zoneinfo.zip
 ENTRYPOINT ["/bb"]

bot/bot.go

@@ -0,0 +1,239 @@
+package bot
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"git.kill0.net/chill9/beepboop/command"
+	"git.kill0.net/chill9/beepboop/config"
+	"git.kill0.net/chill9/beepboop/handler"
+	"git.kill0.net/chill9/beepboop/lib"
+	"github.com/bwmarrin/discordgo"
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+var C *config.Config
+
+type (
+	Bot struct {
+		config   *config.Config
+		session  *discordgo.Session
+		commands map[string]*Command
+	}
+
+	Command struct {
+		Name  string
+		Func  CommandFunc
+		NArgs int
+	}
+
+	CommandFunc func(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error
+
+	MessageHandler func(s *discordgo.Session, m *discordgo.MessageCreate)
+)
+
+func init() {
+	pflag.Bool("debug", false, "enable debug mode")
+	pflag.Parse()
+
+	viper.BindPFlags(pflag.CommandLine)
+}
+
+func NewBot(config *config.Config, s *discordgo.Session) *Bot {
+	return &Bot{
+		session:  s,
+		commands: make(map[string]*Command),
+	}
+}
+
+func (b *Bot) AddHandler(handler interface{}) func() {
+	return b.session.AddHandler(handler)
+}
+
+func (b *Bot) AddCommand(cmd *Command) {
+	b.commands[cmd.Name] = cmd
+}
+
+func (b *Bot) GetCommand(name string) (*Command, bool) {
+	cmd, ok := b.commands[name]
+	return cmd, ok
+}
+
+func (b *Bot) CommandHandler(s *discordgo.Session, m *discordgo.MessageCreate) {
+	if m.Author.ID == s.State.User.ID {
+		return
+	}
+
+	if !lib.HasCommand(m.Content, b.config.Prefix) {
+		return
+	}
+
+	cmdName, arg := lib.SplitCommandAndArg(m.Content, b.config.Prefix)
+
+	cmd, ok := b.GetCommand(cmdName)
+	if !ok {
+		return
+	}
+
+	args := lib.SplitArgs(arg, cmd.NArgs)
+
+	if ok {
+		log.Debugf("command: %v, args: %v, nargs: %d", cmd.Name, args, len(args))
+		if err := cmd.Func(args, s, m); err != nil {
+			log.Errorf("failed to execute command: %s", err)
+		}
+
+		return
+	}
+
+	log.Warnf("unknown command: %v, args: %v, nargs: %d", cmdName, args, len(args))
+	s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("unknown command: %s", cmdName))
+}
+
+func (b *Bot) Init(h *handler.Handlers, ch *command.Handlers) {
+	// Register handlers
+	b.AddHandler(h.Reaction)
+
+	// Register commands
+	b.AddCommand(&Command{
+		Name: "coin",
+		Func: ch.Coin,
+	})
+	b.AddCommand(&Command{
+		Name:  "deal",
+		Func:  ch.Deal,
+		NArgs: 1,
+	})
+	b.AddCommand(&Command{
+		Name: "ping",
+		Func: ch.Ping,
+	})
+	b.AddCommand(&Command{
+		Name:  "roll",
+		Func:  ch.Roll,
+		NArgs: 1,
+	})
+	b.AddCommand(&Command{
+		Name: "roulette",
+		Func: ch.Roulette,
+	})
+	b.AddCommand(&Command{
+		Name:  "rps",
+		Func:  ch.Rps,
+		NArgs: 1,
+	})
+	b.AddCommand(&Command{
+		Name:  "rpsls",
+		Func:  ch.Rpsls,
+		NArgs: 1,
+	})
+	b.AddCommand(&Command{
+		Name:  "time",
+		Func:  ch.Time,
+		NArgs: 1,
+	})
+	b.AddCommand(&Command{
+		Name: "version",
+		Func: ch.Version,
+	})
+	b.AddCommand(&Command{
+		Name:  "weather",
+		Func:  ch.Weather,
+		NArgs: 1,
+	})
+}
+
+func Run() error {
+	initConfig()
+	go reloadConfig()
+
+	if err := lib.SeedMathRand(); err != nil {
+		log.Warn(err)
+	}
+
+	if C.DiscordToken == "" {
+		return errors.New("discord token not set")
+	}
+
+	dg, err := discordgo.New(fmt.Sprintf("Bot %s", C.DiscordToken))
+	if err != nil {
+		return fmt.Errorf("error creating discord session: %v", err)
+	}
+
+	b := NewBot(C, dg)
+	b.Init(handler.NewHandlers(C), command.NewHandlers(C))
+
+	dg.Identify.Intents = discordgo.IntentsGuildMessages | discordgo.IntentsDirectMessages
+
+	if err = dg.Open(); err != nil {
+		return fmt.Errorf("error opening connection: %v", err)
+	}
+
+	log.Info("The bot is now running. Press CTRL-C to exit.")
+
+	defer dg.Close()
+
+	sc := make(chan os.Signal, 1)
+	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM)
+	<-sc
+
+	log.Info("Shutting down")
+
+	return nil
+}
+
+func initConfig() {
+	C = config.NewConfig()
+
+	viper.SetEnvPrefix("BEEPBOOP")
+	viper.AutomaticEnv()
+
+	viper.SetConfigName("config")
+	viper.SetConfigType("toml")
+	viper.AddConfigPath(".")
+
+	viper.SetDefault("debug", false)
+
+	viper.BindEnv("DISCORD_TOKEN")
+	viper.BindEnv("OPEN_WEATHER_MAP_TOKEN")
+
+	loadConfig()
+}
+
+func loadConfig() {
+	if err := viper.ReadInConfig(); err != nil {
+		if _, ok := err.(viper.ConfigFileNotFoundError); !ok {
+			log.Fatalf("fatal error config file: %v", err)
+		}
+	}
+
+	log.WithField("filename", viper.ConfigFileUsed()).Info(
+		"loaded configuration file",
+	)
+
+	err := viper.Unmarshal(&C)
+	if err != nil {
+		log.Fatalf("unable to decode into struct: %v", err)
+	}
+
+	if viper.GetBool("debug") {
+		log.SetLevel(log.DebugLevel)
+	} else {
+		log.SetLevel(log.InfoLevel)
+	}
+}
+
+func reloadConfig() {
+	sc := make(chan os.Signal, 1)
+	signal.Notify(sc, syscall.SIGHUP)
+	for {
+		<-sc
+
+		loadConfig()
+	}
+}

bot/config.go

@@ -1,42 +0,0 @@
-package bot
-
-const (
-	defaultPrefix = "!"
-)
-
-var (
-	defaultReactions []string = []string{"👍", "🌶️", "🤣", "😂", "🍆", "🍑", "❤️", "💦", "😍", "💩", "🔥", "🍒", "🎉", "🥳", "🎊"}
-)
-
-type (
-	Config struct {
-		Debug               bool          `mapstructure:"debug"`
-		Handler             HandlerConfig `mapstructure:"handler"`
-		Prefix              string        `mapstructure:"prefix"`
-		DiscordToken        string        `mapstructure:"discord_token"`
-		OpenWeatherMapToken string        `mapstructure:"open_weather_map_token"`
-	}
-
-	HandlerConfig struct {
-		Reaction ReactionConfig `mapstructure:"reaction"`
-		Weather  WeatherConfig  `mapstructure:"weather"`
-	}
-
-	ReactionConfig struct {
-		Emojis   []string
-		Channels []string
-	}
-
-	WeatherConfig struct {
-		Token string `mapstructure:"token"`
-	}
-)
-
-func NewConfig() Config {
-	var c Config
-
-	c.Prefix = defaultPrefix
-	c.Handler.Reaction.Emojis = defaultReactions
-
-	return c
-}

bot/handler/coin.go

@@ -1,52 +0,0 @@
-package handler
-
-import (
-	"git.kill0.net/chill9/beepboop/bot"
-	"git.kill0.net/chill9/beepboop/lib"
-	"github.com/bwmarrin/discordgo"
-)
-
-type (
-	Coin bool
-
-	CoinHandler struct {
-		config bot.Config
-		Name   string
-	}
-)
-
-func (c *Coin) Flip() bool {
-	*c = Coin(lib.Itob(lib.RandInt(0, 1)))
-	return bool(*c)
-}
-
-func NewCoinHandler(s string) *CoinHandler {
-	return &CoinHandler{Name: s}
-}
-
-func (h *CoinHandler) SetConfig(config bot.Config) {
-	h.config = config
-}
-
-func (h *CoinHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
-	var (
-		c   Coin
-		msg string
-	)
-
-	if m.Author.ID == s.State.User.ID {
-		return
-	}
-
-	if !lib.HasCommand(m.Content, h.config.Prefix, h.Name) {
-		return
-	}
-
-	if c.Flip() {
-		msg = "heads"
-	} else {
-		msg = "tails"
-	}
-
-	s.ChannelMessageSend(m.ChannelID, msg)
-}

bot/handler/ping.go

@@ -1,37 +0,0 @@
-package handler
-
-import (
-	"git.kill0.net/chill9/beepboop/bot"
-	"git.kill0.net/chill9/beepboop/lib"
-	"github.com/bwmarrin/discordgo"
-	log "github.com/sirupsen/logrus"
-)
-
-type (
-	PingHandler struct {
-		config bot.Config
-		Name   string
-	}
-)
-
-func NewPingHandler(s string) *PingHandler {
-	return &PingHandler{Name: s}
-}
-
-func (h *PingHandler) SetConfig(config bot.Config) {
-	h.config = config
-}
-
-func (h *PingHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
-	if m.Author.ID == s.State.User.ID {
-		return
-	}
-
-	if !lib.HasCommand(m.Content, h.config.Prefix, h.Name) {
-		return
-	}
-
-	log.Debug("received ping")
-
-	s.ChannelMessageSend(m.ChannelID, "pong")
-}

bot/handler/time.go

@@ -1,65 +0,0 @@
-package handler
-
-import (
-	"fmt"
-	"strings"
-	"time"
-
-	"git.kill0.net/chill9/beepboop/bot"
-	"github.com/bwmarrin/discordgo"
-	log "github.com/sirupsen/logrus"
-)
-
-type (
-	TimeHandler struct {
-		config bot.Config
-		Name   string
-	}
-)
-
-func NewTimeHandler(s string) *TimeHandler {
-	return &TimeHandler{Name: s}
-}
-
-func (h *TimeHandler) SetConfig(config bot.Config) {
-	h.config = config
-}
-
-func (h *TimeHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
-	var (
-		t  time.Time
-		tz string
-	)
-
-	if m.Author.ID == s.State.User.ID {
-		return
-	}
-
-	if !strings.HasPrefix(m.Content, "!time") {
-		return
-	}
-
-	x := strings.SplitN(m.Content, " ", 2)
-
-	if len(x) > 2 {
-		s.ChannelMessageSend(m.ChannelID, "help: `!time TIMEZONE`")
-		return
-	}
-
-	now := time.Now()
-
-	if len(x) == 2 {
-		tz = x[1]
-		loc, err := time.LoadLocation(tz)
-		if err != nil {
-			log.Warnf("failed to load location: %s", err)
-			s.ChannelMessageSend(m.ChannelID, err.Error())
-			return
-		}
-		t = now.In(loc)
-	} else {
-		t = now
-	}
-
-	s.ChannelMessageSend(m.ChannelID, fmt.Sprint(t))
-}

bot/handler/version.go

@@ -1,47 +0,0 @@
-package handler
-
-import (
-	"fmt"
-	"runtime"
-
-	"git.kill0.net/chill9/beepboop/bot"
-	"git.kill0.net/chill9/beepboop/lib"
-	"github.com/bwmarrin/discordgo"
-)
-
-const (
-	SourceURI = "https://git.kill0.net/chill9/bb"
-)
-
-type (
-	VersionHandler struct {
-		config bot.Config
-		Name   string
-	}
-)
-
-func NewVersionHandler(s string) *VersionHandler {
-	return &VersionHandler{Name: s}
-}
-
-func (h *VersionHandler) SetConfig(config bot.Config) {
-	h.config = config
-}
-
-func (h *VersionHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
-	if m.Author.ID == s.State.User.ID {
-		return
-	}
-
-	if !lib.HasCommand(m.Content, h.config.Prefix, h.Name) {
-		return
-	}
-
-	s.ChannelMessageSend(m.ChannelID, fmt.Sprintf(
-		"go version: %s\nplatform: %s\nos: %s\nsource: %s\n",
-		runtime.Version(),
-		runtime.GOARCH,
-		runtime.GOOS,
-		SourceURI,
-	))
-}

bot/handlers.go

@@ -1,10 +0,0 @@
-package bot
-
-import (
-	"github.com/bwmarrin/discordgo"
-)
-
-type MessageCreateHandler interface {
-	Handle(*discordgo.Session, *discordgo.MessageCreate)
-	SetConfig(Config)
-}

cmd/bb/main.go

@@ -1,111 +1,13 @@
 package main
 
 import (
-	"flag"
-	"fmt"
-
-	//"log"
-
-	"os"
-	"os/signal"
-	"syscall"
-
 	"git.kill0.net/chill9/beepboop/bot"
-	"git.kill0.net/chill9/beepboop/bot/handler"
-	"git.kill0.net/chill9/beepboop/lib"
 
-	"github.com/bwmarrin/discordgo"
 	log "github.com/sirupsen/logrus"
-	"github.com/spf13/pflag"
-	"github.com/spf13/viper"
-)
-
-var (
-	C bot.Config
-
-	handlers []bot.MessageCreateHandler = []bot.MessageCreateHandler{
-		handler.NewCoinHandler("coin"),
-		handler.NewPingHandler("ping"),
-		handler.NewRollHandler("roll"),
-		handler.NewRouletteHandler("roulette"),
-		handler.NewTimeHandler("time"),
-		handler.NewVersionHandler("version"),
-		handler.NewWeatherHandler("weather"),
-		handler.NewReactionHandler(),
-		handler.NewDealHandler("deal"),
-	}
 )
 
 func main() {
-	setupConfig()
+	if err := bot.Run(); err != nil {
-
+		log.Fatal(err)
-	lib.SeedMathRand()
-
-	if C.DiscordToken == "" {
-		log.Fatalf("Discord token is not set")
-	}
-
-	dg, err := discordgo.New(fmt.Sprintf("Bot %s", C.DiscordToken))
-	if err != nil {
-		log.Fatalf("error creating Discord session: %v\n", err)
-	}
-
-	for _, h := range handlers {
-		h.SetConfig(C)
-		dg.AddHandler(h.Handle)
-	}
-
-	dg.Identify.Intents = discordgo.IntentsGuildMessages | discordgo.IntentsDirectMessages
-
-	err = dg.Open()
-	if err != nil {
-		log.Fatalf("error opening connection: %v\n", err)
-	}
-
-	log.Info("The bot is now running. Press CTRL-C to exit.")
-
-	defer dg.Close()
-
-	sc := make(chan os.Signal, 1)
-	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt, os.Kill)
-	<-sc
-
-	log.Info("Shutting down")
-}
-
-func setupConfig() {
-	var err error
-
-	C = bot.NewConfig()
-
-	flag.Bool("debug", false, "enable debug logging")
-	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
-	pflag.Parse()
-	viper.BindPFlags(pflag.CommandLine)
-
-	viper.SetEnvPrefix("BEEPBOOP")
-	viper.AutomaticEnv()
-
-	viper.SetConfigName("config")
-	viper.SetConfigType("toml")
-	viper.AddConfigPath(".")
-
-	err = viper.ReadInConfig()
-
-	viper.BindEnv("DEBUG")
-	viper.BindEnv("DISCORD_TOKEN")
-	viper.BindEnv("OPEN_WEATHER_MAP_TOKEN")
-
-	if _, ok := err.(viper.ConfigFileNotFoundError); !ok {
-		log.Fatalf("fatal error config file: %v", err)
-	}
-
-	err = viper.Unmarshal(&C)
-	if err != nil {
-		log.Fatalf("unable to decode into struct: %v", err)
-	}
-
-	if viper.GetBool("debug") {
-		log.SetLevel(log.DebugLevel)
 	}
 }

command/coin.go

@@ -0,0 +1,29 @@
+package command
+
+import (
+	"git.kill0.net/chill9/beepboop/lib"
+	"github.com/bwmarrin/discordgo"
+)
+
+type Coin bool
+
+func (c *Coin) Flip() bool {
+	*c = Coin(lib.Itob(lib.RandInt(0, 1)))
+	return bool(*c)
+}
+
+func (h *Handlers) Coin(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
+	var (
+		c   Coin
+		msg string
+	)
+
+	if c.Flip() {
+		msg = "heads"
+	} else {
+		msg = "tails"
+	}
+
+	s.ChannelMessageSend(m.ChannelID, msg)
+	return nil
+}

command/commands.go

@@ -0,0 +1,11 @@
+package command
+
+import "git.kill0.net/chill9/beepboop/config"
+
+type Handlers struct {
+	config *config.Config
+}
+
+func NewHandlers(config *config.Config) *Handlers {
+	return &Handlers{config: config}
+}

command/deal.go

@@ -1,4 +1,4 @@
-package handler
+package command
 
 import (
 	"errors"
@@ -7,18 +7,11 @@ import (
 	"strconv"
 	"strings"
 
-	"git.kill0.net/chill9/beepboop/bot"
-	"git.kill0.net/chill9/beepboop/lib"
 	"github.com/bwmarrin/discordgo"
 	log "github.com/sirupsen/logrus"
 )
 
 type (
-	DealHandler struct {
-		config bot.Config
-		Name   string
-	}
-
 	Card string
 
 	Deck [52]Card
@@ -52,36 +45,16 @@ func (d *Deck) Deal(n int) ([]Card, error) {
 	return hand, err
 }
 
-func NewDealHandler(s string) *DealHandler {
+func (h *Handlers) Deal(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
-	h := new(DealHandler)
-	h.Name = s
-	return h
-}
-
-func (h *DealHandler) SetConfig(config bot.Config) {
-	h.config = config
-}
-
-func (h *DealHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
-	if m.Author.ID == s.State.User.ID {
-		return
-	}
-
-	if !lib.HasCommand(m.Content, h.config.Prefix, h.Name) {
-		return
-	}
-
 	rand.Shuffle(len(deck), func(i, j int) {
 		deck[i], deck[j] = deck[j], deck[i]
 	})
 
 	log.Debugf("%+v", deck)
 
-	_, args := lib.SplitCommandAndArgs(m.Content, h.config.Prefix)
-
 	if len(args) != 1 {
-		s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("help: `!%s <n>`", h.Name))
+		s.ChannelMessageSend(m.ChannelID, "help: `!deal <n>`")
-		return
+		return nil
 	}
 
 	n, err := strconv.Atoi(args[0])
@@ -92,16 +65,15 @@ func (h *DealHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	hand, err := deck.Deal(n)
 	if err != nil {
 		s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("error: %s\n", err))
-		return
+		return nil
 	}
 
 	s.ChannelMessageSend(m.ChannelID, JoinCards(hand, " "))
+	return nil
 }
 
 func JoinCards(h []Card, sep string) string {
-	var b []string
+	b := make([]string, len(h))
-
-	b = make([]string, len(h))
 
 	for i, v := range h {
 		b[i] = string(v)

command/dice.go

@@ -1,4 +1,4 @@
-package handler
+package command
 
 import (
 	"errors"
@@ -7,10 +7,9 @@ import (
 	"strconv"
 	"strings"
 
-	"git.kill0.net/chill9/beepboop/bot"
 	"git.kill0.net/chill9/beepboop/lib"
-	"github.com/bwmarrin/discordgo"
 
+	"github.com/bwmarrin/discordgo"
 	log "github.com/sirupsen/logrus"
 )
 
@@ -25,11 +24,6 @@ type (
 		Rolls     []int
 		S         string
 	}
-
-	RollHandler struct {
-		config bot.Config
-		Name   string
-	}
 )
 
 func NewRoll(n, d int) *Roll {
@@ -84,42 +78,19 @@ func (r *Roll) RollDice() {
 	}
 }
 
-func NewRollHandler(s string) *RollHandler {
+func (h *Handlers) Roll(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
-	return &RollHandler{Name: s}
-}
-
-func (h *RollHandler) SetConfig(config bot.Config) {
-	h.config = config
-}
-
-func (h *RollHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	var (
 		err       error
 		msg, roll string
 		r         *Roll
 	)
 
-	if m.Author.ID == s.State.User.ID {
+	roll = args[0]
-		return
-	}
-
-	if !lib.HasCommand(m.Content, h.config.Prefix, h.Name) {
-		return
-	}
-
-	x := strings.Split(m.Content, " ")
-
-	if len(x) != 2 {
-		s.ChannelMessageSend(m.ChannelID, "help: `!roll <n>d<s>`")
-		return
-	}
-
-	roll = x[1]
 
 	r, err = ParseRoll(roll)
 	if err != nil {
 		s.ChannelMessageSend(m.ChannelID, err.Error())
-		return
+		return nil
 	}
 
 	r.RollDice()
@@ -128,4 +99,5 @@ func (h *RollHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	msg = fmt.Sprintf("🎲 %s = %d", lib.JoinInt(r.Rolls, " + "), r.Sum)
 
 	s.ChannelMessageSend(m.ChannelID, msg)
+	return nil
 }

command/ping.go

@@ -0,0 +1,10 @@
+package command
+
+import (
+	"github.com/bwmarrin/discordgo"
+)
+
+func (h *Handlers) Ping(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
+	s.ChannelMessageSend(m.ChannelID, "pong")
+	return nil
+}

command/roulette.go

@@ -1,12 +1,9 @@
-package handler
+package command
 
 import (
-	"strings"
-
-	"git.kill0.net/chill9/beepboop/bot"
 	"git.kill0.net/chill9/beepboop/lib"
-	"github.com/bwmarrin/discordgo"
 
+	"github.com/bwmarrin/discordgo"
 	log "github.com/sirupsen/logrus"
 )
 
@@ -21,11 +18,6 @@ type (
 		C [6]bool
 		N int
 	}
-
-	RouletteHandler struct {
-		config bot.Config
-		Name   string
-	}
 )
 
 var (
@@ -44,7 +36,7 @@ func (g *Gun) Load(n int) {
 	g.N = 0
 	for i := 1; i <= n; {
 		x := lib.RandInt(0, len(g.C)-1)
-		if g.C[x] == false {
+		if !g.C[x] {
 			g.C[x] = true
 			i++
 		} else {
@@ -66,7 +58,7 @@ func (g *Gun) Fire() bool {
 
 func (g *Gun) IsEmpty() bool {
 	for _, v := range g.C {
-		if v == true {
+		if v {
 			return false
 		}
 	}
@@ -74,23 +66,7 @@ func (g *Gun) IsEmpty() bool {
 	return true
 }
 
-func NewRouletteHandler(s string) *RouletteHandler {
+func (h *Handlers) Roulette(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
-	return &RouletteHandler{Name: s}
-}
-
-func (h *RouletteHandler) SetConfig(config bot.Config) {
-	h.config = config
-}
-
-func (h *RouletteHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
-	if m.Author.ID == s.State.User.ID {
-		return
-	}
-
-	if !strings.HasPrefix(m.Content, "!roulette") {
-		return
-	}
-
 	if gun.IsEmpty() {
 		gun.Load(Bullets)
 		log.Debugf("reloading gun: %+v\n", gun)
@@ -102,4 +78,5 @@ func (h *RouletteHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreat
 	} else {
 		s.ChannelMessageSend(m.ChannelID, GunClickMessage)
 	}
+	return nil
 }

command/rps.go

@@ -0,0 +1,34 @@
+package command
+
+import (
+	"strings"
+
+	"git.kill0.net/chill9/beepboop/lib/rps"
+	"github.com/bwmarrin/discordgo"
+)
+
+func (h *Handlers) Rps(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
+	if len(args) != 1 {
+		s.ChannelMessageSend(
+			m.ChannelID, "help: `!rps (rock | paper | scissors)`",
+		)
+		return nil
+	}
+
+	pc := strings.ToLower(args[0]) // player's choice
+
+	g := rps.NewGame(rps.RulesRps, rps.EmojiMapRps)
+
+	bc := g.Rand() // bot's choice
+
+	out, err := g.Play(bc, pc)
+	if _, ok := err.(rps.InvalidChoiceError); ok {
+		s.ChannelMessageSend(
+			m.ChannelID, "help: `!rps (rock | paper | scissors)`",
+		)
+	}
+
+	s.ChannelMessageSend(m.ChannelID, out)
+
+	return nil
+}

command/rpsls.go

@@ -0,0 +1,34 @@
+package command
+
+import (
+	"strings"
+
+	"git.kill0.net/chill9/beepboop/lib/rps"
+	"github.com/bwmarrin/discordgo"
+)
+
+func (h *Handlers) Rpsls(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
+	if len(args) != 1 {
+		s.ChannelMessageSend(
+			m.ChannelID, "help: `!rps (rock | paper | scissors | lizard | spock)`",
+		)
+		return nil
+	}
+
+	pc := strings.ToLower(args[0]) // player's choice
+
+	g := rps.NewGame(rps.RulesRpsls, rps.EmojiMapRpsls)
+
+	bc := g.Rand() // bot's choice
+
+	out, err := g.Play(bc, pc)
+	if _, ok := err.(rps.InvalidChoiceError); ok {
+		s.ChannelMessageSend(
+			m.ChannelID, "help: `!rps (rock | paper | scissors | lizard | spock)`",
+		)
+	}
+
+	s.ChannelMessageSend(m.ChannelID, out)
+
+	return nil
+}

command/time.go

@@ -0,0 +1,34 @@
+package command
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/bwmarrin/discordgo"
+	log "github.com/sirupsen/logrus"
+)
+
+func (h *Handlers) Time(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
+	var (
+		t  time.Time
+		tz string
+	)
+
+	now := time.Now()
+
+	if len(args) == 1 {
+		tz = args[0]
+		loc, err := time.LoadLocation(tz)
+		if err != nil {
+			log.Warnf("failed to load location: %s", err)
+			s.ChannelMessageSend(m.ChannelID, err.Error())
+			return nil
+		}
+		t = now.In(loc)
+	} else {
+		t = now
+	}
+
+	s.ChannelMessageSend(m.ChannelID, fmt.Sprint(t))
+	return nil
+}

command/version.go

@@ -0,0 +1,23 @@
+package command
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+const (
+	SourceURI = "https://git.kill0.net/chill9/bb"
+)
+
+func (h *Handlers) Version(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
+	s.ChannelMessageSend(m.ChannelID, fmt.Sprintf(
+		"go version: %s\nplatform: %s\nos: %s\nsource: %s\n",
+		runtime.Version(),
+		runtime.GOARCH,
+		runtime.GOOS,
+		SourceURI,
+	))
+	return nil
+}

command/weather.go

@@ -1,66 +1,41 @@
-package handler
+package command
 
 import (
 	"fmt"
-	"strings"
 
-	"git.kill0.net/chill9/beepboop/bot"
 	"git.kill0.net/chill9/beepboop/lib/weather"
-	"github.com/bwmarrin/discordgo"
 
+	"github.com/bwmarrin/discordgo"
 	log "github.com/sirupsen/logrus"
 )
 
-type WeatherHandler struct {
+func (h *Handlers) Weather(args []string, s *discordgo.Session, m *discordgo.MessageCreate) error {
-	Config bot.Config
-	Name   string
-}
-
-func NewWeatherHandler(s string) *WeatherHandler {
-	return &WeatherHandler{Name: s}
-}
-
-func (h *WeatherHandler) SetConfig(config bot.Config) {
-	h.Config = config
-}
-
-func (h *WeatherHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	var (
 		err error
 		loc string
 		w   weather.Weather
 	)
 
-	if m.Author.ID == s.State.User.ID {
+	if len(args) != 1 {
-		return
-	}
-
-	if !strings.HasPrefix(m.Content, "!weather") {
-		return
-	}
-
-	x := strings.SplitN(m.Content, " ", 2)
-
-	if len(x) != 2 {
 		s.ChannelMessageSend(m.ChannelID, "help: `!weather <CITY>,<STATE>,<COUNTRY>`")
-		return
+		return nil
 	}
 
-	loc = x[1]
+	loc = args[0]
 
-	if h.Config.OpenWeatherMapToken == "" {
+	if h.config.OpenWeatherMapToken == "" {
 		log.Error("OpenWeather token is not set")
-		return
+		return nil
 	}
 
-	wc := weather.NewClient(h.Config.OpenWeatherMapToken)
+	wc := weather.NewClient(h.config.OpenWeatherMapToken)
 
 	log.Debugf("weather requested for '%s'", loc)
 
 	w, err = wc.Get(loc)
 	if err != nil {
 		log.Errorf("weather client error: %v", err)
-		return
+		return nil
 	}
 
 	log.Debugf("weather returned for '%s': %+v", loc, w)
@@ -74,4 +49,6 @@ func (h *WeatherHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate
 		w.Main.Temp.Fahrenheit(),
 		w.Main.Temp.Kelvin(),
 	))
+
+	return nil
 }

config/config.go

@@ -0,0 +1,58 @@
+package config
+
+const (
+	defaultPrefix = "!"
+)
+
+var (
+	defaultReactions []string = []string{
+		"👍", "🌶️", "🤣", "😂", "🍆", "🍑", "❤️", "💦", "😍", "💩",
+		"🔥", "🍒", "🎉", "🥳", "🎊", "📉", "📈", "💀", "☠️",
+	}
+)
+
+type (
+	Config struct {
+		Debug               bool           `mapstructure:"debug"`
+		Handler             HandlerConfig  `mapstructure:"handler"`
+		Prefix              string         `mapstructure:"prefix"`
+		DiscordToken        string         `mapstructure:"discord_token"`
+		OpenWeatherMapToken string         `mapstructure:"open_weather_map_token"`
+		Mongo               MongoConfig    `mapstructure:"mongo"`
+		Redis               RedisConfig    `mapstructure:"redis"`
+		Postgres            PostgresConfig `mapstructure:"postgres"`
+	}
+
+	HandlerConfig struct {
+		Reaction ReactionConfig `mapstructure:"reaction"`
+	}
+
+	ReactionConfig struct {
+		Emojis   []string
+		Channels []string
+	}
+
+	MongoConfig struct {
+		Uri      string `mapstructure:"uri"`
+		Database string `mapstructure:"database"`
+	}
+
+	RedisConfig struct {
+		Addr     string `mapstructure:"addr"`
+		Password string `mapstructure:"password"`
+		DB       int    `mapstructure:"database"`
+	}
+
+	PostgresConfig struct {
+		Uri string `mapstructure:"uri"`
+	}
+)
+
+func NewConfig() *Config {
+	var c *Config = &Config{}
+
+	c.Prefix = defaultPrefix
+	c.Handler.Reaction.Emojis = defaultReactions
+
+	return c
+}

docker-compose.yaml

@@ -1,3 +1,4 @@
+---
 version: "3.9"
 services:
   bot:
@@ -6,3 +7,5 @@ services:
       - BEEPBOOP_DISCORD_TOKEN
       - BEEPBOOP_OPEN_WEATHER_MAP_TOKEN
       - BEEPBOOP_DEBUG=true
+    volumes:
+      - ./config.toml:/config.toml

go.mod

@@ -3,28 +3,28 @@ module git.kill0.net/chill9/beepboop
 go 1.18
 
 require (
-	github.com/bwmarrin/discordgo v0.25.0
+	github.com/bwmarrin/discordgo v0.26.1
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.12.0
+	github.com/spf13/viper v1.13.0
 )
 
 require (
 	github.com/fsnotify/fsnotify v1.5.4 // indirect
-	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/pelletier/go-toml v1.9.5 // indirect
-	github.com/pelletier/go-toml/v2 v2.0.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
-	github.com/spf13/afero v1.8.2 // indirect
+	github.com/spf13/afero v1.9.2 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/subosito/gotenv v1.3.0 // indirect
+	github.com/subosito/gotenv v1.4.1 // indirect
-	golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4 // indirect
+	golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 // indirect
-	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
+	golang.org/x/sys v0.0.0-20220907062415-87db552b00fd // indirect
 	golang.org/x/text v0.3.7 // indirect
-	gopkg.in/ini.v1 v1.66.4 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -38,8 +38,8 @@ cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3f
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/bwmarrin/discordgo v0.25.0 h1:NXhdfHRNxtwso6FPdzW2i3uBvvU7UIQTghmV2T4nqAs=
+github.com/bwmarrin/discordgo v0.26.1 h1:AIrM+g3cl+iYBr4yBxCBp9tD9jR3K7upEjl0d89FRkE=
-github.com/bwmarrin/discordgo v0.25.0/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
+github.com/bwmarrin/discordgo v0.26.1/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -118,8 +118,9 @@ github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
-github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
+github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
@@ -141,8 +142,8 @@ github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyua
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/pelletier/go-toml v1.9.5 h1:4yBQzkHv+7BHq2PQUZF3Mx0IYxG7LsP222s7Agd3ve8=
 github.com/pelletier/go-toml v1.9.5/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
-github.com/pelletier/go-toml/v2 v2.0.1 h1:8e3L2cCQzLFi2CR4g7vGFuFxX7Jl1kKX8gW+iV0GUKU=
+github.com/pelletier/go-toml/v2 v2.0.5 h1:ipoSadvV8oGUjnUbMub59IDPPwfxF694nG/jwbMiyQg=
-github.com/pelletier/go-toml/v2 v2.0.1/go.mod h1:r9LEWfGN8R5k0VXJ+0BkIe7MYkRdwZOjgMj2KwnJFUo=
+github.com/pelletier/go-toml/v2 v2.0.5/go.mod h1:OMHamSCAODeSsVrwwvcJOaoN0LIUIaFVNZzmWyNfXas=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/sftp v1.13.1/go.mod h1:3HaPG6Dq1ILlpPZRO0HVMrsydcdLt6HRDccSgb87qRg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -152,25 +153,27 @@ github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFR
 github.com/rogpeppe/go-internal v1.6.1 h1:/FiVV8dS/e+YqF2JvO3yXRFbBLTIuSDkuC7aBOAvL+k=
 github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
 github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
-github.com/spf13/afero v1.8.2 h1:xehSyVa0YnHWsJ49JFljMpg1HX19V6NDZ1fkm1Xznbo=
+github.com/spf13/afero v1.9.2 h1:j49Hj62F0n+DaZ1dDCvhABaPNSGNkt32oRFxI33IEMw=
-github.com/spf13/afero v1.8.2/go.mod h1:CtAatgMJh6bJEIs48Ay/FOnkljP3WeGUG0MC1RfAqwo=
+github.com/spf13/afero v1.9.2/go.mod h1:iUV7ddyEEZPO5gA3zD4fJt6iStLlL+Lg4m2cihcDf8Y=
 github.com/spf13/cast v1.5.0 h1:rj3WzYc11XZaIZMPKmwP96zkFEnnAmV8s6XbB2aY32w=
 github.com/spf13/cast v1.5.0/go.mod h1:SpXXQ5YoyJw6s3/6cMTQuxvgRl3PCJiyaX9p6b155UU=
 github.com/spf13/jwalterweatherman v1.1.0 h1:ue6voC5bR5F8YxI5S67j9i582FU4Qvo2bmqnqMYADFk=
 github.com/spf13/jwalterweatherman v1.1.0/go.mod h1:aNWZUN0dPAAO/Ljvb5BEdw96iTZ0EXowPYD95IqWIGo=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/spf13/viper v1.12.0 h1:CZ7eSOd3kZoaYDLbXnmzgQI5RlciuXBMA+18HwHRfZQ=
+github.com/spf13/viper v1.13.0 h1:BWSJ/M+f+3nmdz9bxB+bWX28kkALN2ok11D0rSo8EJU=
-github.com/spf13/viper v1.12.0/go.mod h1:b6COn30jlNxbm/V2IqWiNWkJ+vZNiMNksliPCiuKtSI=
+github.com/spf13/viper v1.13.0/go.mod h1:Icm2xNL3/8uyh/wFuB1jI7TiTNKp8632Nwegu+zgdYw=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/subosito/gotenv v1.3.0 h1:mjC+YW8QpAdXibNi+vNWgzmgBH4+5l5dCXv8cNysBLI=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
-github.com/subosito/gotenv v1.3.0/go.mod h1:YzJjq/33h7nrwdY+iHMhEOEEbW0ovIz0tB6t6PwAXzs=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/subosito/gotenv v1.4.1 h1:jyEFiXpy21Wm81FBN71l9VoMMV8H8jG+qIK3GCpY6Qs=
+github.com/subosito/gotenv v1.4.1/go.mod h1:ayKnFf/c6rvx/2iiLrJUk1e6plDbT3edrFNGqEflhK0=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
@@ -188,8 +191,8 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4 h1:kUhD7nTDoI3fVd9G4ORWrbV5NY0liEs/Jg2pv5f+bBA=
+golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 h1:Y/gsMcFOcR+6S6f3YeMKl5g+dZMEWqcz5Czj/GWYbkM=
-golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -308,8 +311,9 @@ golang.org/x/sys v0.0.0-20210225134936-a50acf3fe073/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 h1:0A+M6Uqn+Eje4kHMK80dtF3JCXC4ykBgQG4Fe06QRhQ=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220907062415-87db552b00fd h1:AZeIEzg+8RCELJYq8w+ODLVxFgLMMigSwO/ffKPEd9U=
+golang.org/x/sys v0.0.0-20220907062415-87db552b00fd/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -465,14 +469,14 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
-gopkg.in/ini.v1 v1.66.4 h1:SsAcf+mM7mRZo2nJNGt8mZCjG8ZRaNGMURJw7BsIST4=
+gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
-gopkg.in/ini.v1 v1.66.4/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0 h1:hjy8E9ON/egN1tAYqKb61G10WtihqetD4sz2H+8nIeA=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

handler/handlers.go

@@ -0,0 +1,15 @@
+package handler
+
+import (
+	"git.kill0.net/chill9/beepboop/config"
+)
+
+type Handlers struct {
+	config *config.Config
+}
+
+func NewHandlers(config *config.Config) *Handlers {
+	return &Handlers{
+		config: config,
+	}
+}

handler/reaction.go

@@ -4,34 +4,19 @@ import (
 	"math/rand"
 	"strings"
 
-	"git.kill0.net/chill9/beepboop/bot"
 	"git.kill0.net/chill9/beepboop/lib"
 
 	"github.com/bwmarrin/discordgo"
 	log "github.com/sirupsen/logrus"
 )
 
-type (
+func (h *Handlers) Reaction(s *discordgo.Session, m *discordgo.MessageCreate) {
-	ReactionHandler struct {
-		Config bot.Config
-	}
-)
-
-func NewReactionHandler() *ReactionHandler {
-	return new(ReactionHandler)
-}
-
-func (h *ReactionHandler) SetConfig(config bot.Config) {
-	h.Config = config
-}
-
-func (h *ReactionHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	if m.Author.ID == s.State.User.ID {
 		return
 	}
 
-	emojis := h.Config.Handler.Reaction.Emojis
+	emojis := h.config.Handler.Reaction.Emojis
-	channels := h.Config.Handler.Reaction.Channels
+	channels := h.config.Handler.Reaction.Channels
 
 	if len(emojis) == 0 {
 		log.Warning("emoji list is empty")

lib/common.go

@@ -17,9 +17,7 @@ func Contains[T comparable](s []T, v T) bool {
 }
 
 func JoinInt(a []int, sep string) string {
-	var b []string
+	b := make([]string, len(a))
-
-	b = make([]string, len(a))
 
 	for i, v := range a {
 		b[i] = strconv.Itoa(v)
@@ -37,11 +35,7 @@ func SumInt(a []int) int {
 }
 
 func Itob(v int) bool {
-	if v == 1 {
+	return v == 1
-		return true
-	}
-
-	return false
 }
 
 func BuildURI(rawuri, rawpath string) string {
@@ -50,7 +44,34 @@ func BuildURI(rawuri, rawpath string) string {
 	return u.String()
 }
 
-func HasCommand(s, prefix, cmd string) bool {
+func HasCommand(s, prefix string) bool {
+	s = strings.TrimSpace(s)
+
+	if len(s) == 0 || len(prefix) == 0 {
+		return false
+	}
+
+	if !strings.HasPrefix(s, prefix) {
+		return false
+	}
+
+	// remove the command prefix
+	s = s[len(prefix):]
+
+	// multiple assignment trick
+	cmd, _ := func() (string, string) {
+		x := strings.SplitN(s, " ", 2)
+		if len(x) > 1 {
+			return x[0], x[1]
+		}
+
+		return x[0], ""
+	}()
+
+	return len(cmd) > 0
+}
+
+func ContainsCommand(s, prefix, cmd string) bool {
 	s = strings.TrimSpace(s)
 
 	args := strings.Split(s, " ")
@@ -72,20 +93,69 @@ func HasCommand(s, prefix, cmd string) bool {
 	return false
 }
 
-func SplitCommandAndArgs(s, prefix string) (cmd string, args []string) {
+func SplitCommandAndArg(s, prefix string) (cmd string, arg string) {
 	s = strings.TrimSpace(s)
 
-	x := strings.Split(s, " ")
+	if !strings.HasPrefix(s, prefix) {
-
+		return
-	if len(x) > 1 {
-		args = x[1:]
 	}
 
-	cmd = x[0]
+	// remove the command prefix
+	s = s[len(prefix):]
 
-	if strings.Index(s, prefix) == 0 {
+	// multiple assignment trick
-		cmd = cmd[len(prefix):]
+	cmd, arg = func() (string, string) {
-	}
+		x := strings.SplitN(s, " ", 2)
+		if len(x) > 1 {
+			return x[0], x[1]
+		}
+		return x[0], ""
+	}()
 
-	return cmd, args
+	return cmd, arg
+}
+
+func SplitCommandAndArgs(s, prefix string, n int) (cmd string, args []string) {
+	cmd, arg := SplitCommandAndArg(s, prefix)
+
+	if arg == "" {
+		return cmd, []string{}
+	}
+
+	if n == 0 {
+		return cmd, strings.Split(arg, " ")
+	}
+
+	return cmd, strings.SplitN(arg, " ", n)
+}
+
+func SplitArgs(s string, n int) (args []string) {
+	if s == "" {
+		return []string{}
+	}
+
+	if n > 0 {
+		args = strings.SplitN(s, " ", n)
+	} else {
+		args = strings.Split(s, " ")
+	}
+	return
+}
+
+func MapKeys[K comparable, V any](m map[K]V) []K {
+	keys := make([]K, 0, len(m))
+	for k := range m {
+		keys = append(keys, k)
+	}
+	return keys
+}
+
+func MapKey[K comparable, V comparable](m map[K]V, v V) K {
+	var r K
+	for k := range m {
+		if m[k] == v {
+			return k
+		}
+	}
+	return r
 }

lib/common_test.go

@@ -1,8 +1,11 @@
 package lib
 
-import "testing"
+import (
+	"reflect"
+	"testing"
+)
 
-func TestHasCommand(t *testing.T) {
+func TestContainsCommand(t *testing.T) {
 	tables := []struct {
 		s      string
 		prefix string
@@ -18,11 +21,139 @@ func TestHasCommand(t *testing.T) {
 	}
 
 	for _, table := range tables {
-		r := HasCommand(table.s, table.prefix, table.cmd)
+		r := ContainsCommand(table.s, table.prefix, table.cmd)
 		if r != table.r {
-			t.Errorf("HasCommand(%q, %q, %q), got: %t, want: %t",
+			t.Errorf("ContainsCommand(%q, %q, %q), got: %t, want: %t",
 				table.s, table.prefix, table.cmd, r, table.r,
 			)
 		}
 	}
 }
+
+func TestHasCommandCommand(t *testing.T) {
+	tables := []struct {
+		s      string
+		prefix string
+		want   bool
+	}{
+		{"!command", "!", true},
+		{"!command x y", "!", true},
+		{"!c x y", "!", true},
+		{"! x y", "!", false},
+		{"hey guy", "!", false},
+		{"hey", "!", false},
+		{"hey", "", false},
+		{"", "!", false},
+		{"", "", false},
+	}
+
+	for _, table := range tables {
+		if got, want := HasCommand(table.s, table.prefix), table.want; got != want {
+			t.Errorf(
+				"s: %s, prefix: %s, got: %t, want: %t",
+				table.s, table.prefix, got, want,
+			)
+		}
+	}
+}
+
+func TestSplitCommandAndArg(t *testing.T) {
+	tables := []struct {
+		s       string
+		prefix  string
+		wantCmd string
+		wantArg string
+	}{
+		{"!command x y", "!", "command", "x y"},
+		{"!command", "!", "command", ""},
+		{"hey man", "!", "", ""},
+	}
+
+	for _, table := range tables {
+		gotCmd, gotArg := SplitCommandAndArg(table.s, table.prefix)
+		if gotCmd != table.wantCmd {
+			t.Errorf("got: %s, want: %s", gotCmd, table.wantCmd)
+		}
+		if gotArg != table.wantArg {
+			t.Errorf("got: %+v, want: %+v", gotArg, table.wantArg)
+		}
+	}
+}
+
+func TestSplitCommandAndArgs(t *testing.T) {
+	tables := []struct {
+		s        string
+		prefix   string
+		n        int
+		wantCmd  string
+		wantArgs []string
+	}{
+		{"!command x y", "!", 2, "command", []string{"x", "y"}},
+		{"!command x y z", "!", 2, "command", []string{"x", "y z"}},
+		{"!command", "!", 1, "command", []string{}},
+		{"hey man", "!", 1, "", []string{}},
+	}
+	for _, table := range tables {
+		gotCmd, gotArgs := SplitCommandAndArgs(table.s, table.prefix, table.n)
+		if gotCmd != table.wantCmd {
+			t.Errorf("got: %s, want: %s", gotCmd, table.wantCmd)
+		}
+		if !reflect.DeepEqual(gotArgs, table.wantArgs) {
+			t.Errorf("got: %#v, want: %#v", gotArgs, table.wantArgs)
+		}
+	}
+}
+
+func TestSplitArgs(t *testing.T) {
+	tables := []struct {
+		s    string
+		n    int
+		want []string
+	}{
+		{"a b c", 0, []string{"a", "b", "c"}},
+		{"a b c", 1, []string{"a b c"}},
+		{"a b c", 2, []string{"a", "b c"}},
+		{"a b c", 3, []string{"a", "b", "c"}},
+		{"a b c", 4, []string{"a", "b", "c"}},
+		{"", 0, []string{}},
+	}
+	for _, table := range tables {
+		if got, want := SplitArgs(table.s, table.n), table.want; !reflect.DeepEqual(got, want) {
+			t.Errorf("got: %#v, want: %#v", got, want)
+		}
+	}
+}
+
+func TestMapKeys(t *testing.T) {
+	tables := []struct {
+		m    map[string]int
+		want []string
+	}{
+		{map[string]int{"a": 0, "b": 1, "c": 3}, []string{"a", "b", "c"}},
+	}
+
+	for _, table := range tables {
+		if got, want := MapKeys(table.m), table.want; !reflect.DeepEqual(got, want) {
+			t.Errorf("got: %#v, want: %#v", got, want)
+		}
+	}
+}
+
+func TestMapKey(t *testing.T) {
+	tables := []struct {
+		m    map[string]int
+		n    int
+		want string
+	}{
+		{map[string]int{"a": 0, "b": 1, "c": 2}, 0, "a"},
+		{map[string]int{"a": 0, "b": 1, "c": 2}, 1, "b"},
+		{map[string]int{"a": 0, "b": 1, "c": 2}, 2, "c"},
+		{map[string]int{"a": 0, "b": 1, "c": 2, "d": 0}, 0, "a"},
+	}
+
+	for _, table := range tables {
+		if got, want := MapKey(table.m, table.n), table.want; got != want {
+			t.Errorf("got: %#v, want: %#v", got, want)
+		}
+	}
+}

lib/rand.go

@@ -37,3 +37,21 @@ func SeedMathRand() error {
 func RandInt(min int, max int) int {
 	return rand.Intn(max-min+1) + min
 }
+
+func MapRand[K comparable, V any](m map[K]V) V {
+	n := rand.Intn(len(m))
+	i := 0
+	for _, v := range m {
+		if i == n {
+			return v
+		}
+		i++
+	}
+	panic("unreachable")
+}
+
+func MapRandKey[K comparable, V any](m map[K]V) K {
+	keys := MapKeys(m)
+	n := rand.Intn(len(m))
+	return keys[n]
+}

lib/rps/rps.go

@@ -0,0 +1,118 @@
+package rps
+
+import (
+	"fmt"
+	"strings"
+
+	"git.kill0.net/chill9/beepboop/lib"
+)
+
+type (
+	Game struct {
+		rules    [][]string
+		emojiMap map[string]string
+	}
+)
+
+type InvalidChoiceError struct {
+	s string
+}
+
+func (e InvalidChoiceError) Error() string {
+	return fmt.Sprintf("%q is an invalid choice", e.s)
+}
+
+var (
+	RulesRps [][]string = [][]string{
+		{"rock", "scissors", "crushes"},
+		{"paper", "rock", "covers"},
+		{"scissors", "paper", "cuts"},
+	}
+
+	EmojiMapRps map[string]string = map[string]string{
+		"rock":     "🪨️",
+		"paper":    "📝",
+		"scissors": "✂️",
+	}
+
+	RulesRpsls [][]string = [][]string{
+		{"rock", "scissors", "crushes"},
+		{"rock", "lizard", "crushes"},
+		{"paper", "rock", "covers"},
+		{"paper", "spock", "disproves"},
+		{"scissors", "paper", "cuts"},
+		{"scissors", "lizard", "decapitates"},
+		{"lizard", "paper", "eats"},
+		{"lizard", "spock", "poisons"},
+		{"spock", "scissors", "smashes"},
+		{"spock", "rock", "vaporizes"},
+	}
+
+	EmojiMapRpsls map[string]string = map[string]string{
+		"rock":     "🪨️",
+		"paper":    "📝",
+		"scissors": "✂️",
+		"lizard":   "🦎",
+		"spock":    "🖖",
+	}
+)
+
+func NewGame(rules [][]string, emojiMap map[string]string) *Game {
+	return &Game{rules: rules, emojiMap: emojiMap}
+}
+
+func (g *Game) Rand() string {
+	return lib.MapRandKey(g.emojiMap)
+}
+
+func (g *Game) Play(c1, c2 string) (string, error) {
+	var b strings.Builder
+
+	if !g.Valid(c1) {
+		return "", InvalidChoiceError{s: c1}
+	}
+	if !g.Valid(c2) {
+		return "", InvalidChoiceError{s: c2}
+	}
+
+	fmt.Fprintf(&b, "%s v %s: ", g.emojiMap[c1], g.emojiMap[c2])
+
+	for _, rule := range g.rules {
+		verb := rule[2]
+
+		if c1 == c2 {
+			fmt.Fprintf(&b, "draw")
+			return b.String(), nil
+		}
+
+		if c1 == rule[0] && c2 == rule[1] {
+			fmt.Fprintf(&b, "%s %s %s", c1, verb, c2)
+			return b.String(), nil
+		} else if c2 == rule[0] && c1 == rule[1] {
+			fmt.Fprintf(&b, "%s %s %s", c2, verb, c1)
+			return b.String(), nil
+		}
+	}
+
+	return b.String(), nil
+}
+
+func (g *Game) Valid(c string) bool {
+	_, ok := g.emojiMap[c]
+	return ok
+}
+
+func Play(rules [][]string, c1, c2 string) string {
+	for _, rule := range rules {
+		if c1 == c2 {
+			return "draw"
+		}
+
+		if c1 == rule[0] && c2 == rule[1] {
+			return fmt.Sprintf("%s %s %s", c1, rule[2], c2)
+		} else if c2 == rule[0] && c1 == rule[1] {
+			return fmt.Sprintf("%s %s %s", c2, rule[2], c1)
+		}
+	}
+	return ""
+}

lib/weather/structs.go

@@ -22,6 +22,12 @@ type (
 			H1 float32 `json:"1h"`
 			H3 float32 `json:"3h"`
 		} `json:"rain"`
+
+		Weather []struct {
+			Main        string `json:"main"`
+			Description string `json:"description"`
+			Icon        string `json:"icon"`
+		} `json:"weather"`
 	}
 
 	WeatherError struct {