Inject config into each command handler

cmd/bb/main.go

@@ -26,22 +26,15 @@ var (
 
 	defaultReactions []string = []string{"👍", "🌶️", "🤣", "😂", "🍆", "🍑", "❤️", "💦", "😍", "💩", "🔥", "🍒", "🎉", "🥳", "🎊"}
 
-	C Config
-)
+	C command.Config
 
-type (
-	Config struct {
-		Handler HandlerConfig `mapstructure:"handler"`
-	}
-
-	HandlerConfig struct {
-		Reaction ReactionConfig        `mapstructure:"reaction"`
-		Weather  command.WeatherConfig `mapstructure:"weather"`
-	}
-
-	ReactionConfig struct {
-		Emojis   []string
-		Channels []string
+	handlers []command.CommandHandler = []command.CommandHandler{
+		command.NewCoinHandler(),
+		command.NewPingHandler(),
+		command.NewRollHandler(),
+		command.NewRouletteHandler(),
+		command.NewTimeHandler(),
+		command.NewWeatherHandler(),
 	}
 )
 
@@ -93,17 +86,13 @@ func main() {
 		log.Fatalf("error creating Discord session: %v\n", err)
 	}
 
-	dg.AddHandler(command.NewPingHandler().Handle)
+	for _, h := range handlers {
+		h.SetConfig(C)
+		dg.AddHandler(h.Handle)
+	}
+
 	dg.AddHandler(reactionHandler)
 	dg.AddHandler(praiseHandler)
-	dg.AddHandler(command.NewRollHandler().Handle)
-	dg.AddHandler(command.NewRouletteHandler().Handle)
-
-	h := command.NewWeatherHandler(C.Handler.Weather)
-	dg.AddHandler(h.Handle)
-
-	dg.AddHandler(command.NewCoinHandler().Handle)
-	dg.AddHandler(command.NewTimeHandler().Handle)
 
 	dg.Identify.Intents = discordgo.IntentsGuildMessages
 

command/command.go

@@ -0,0 +1,8 @@
+package command
+
+import "github.com/bwmarrin/discordgo"
+
+type CommandHandler interface {
+	Handle(s *discordgo.Session, m *discordgo.MessageCreate)
+	SetConfig(config Config)
+}

command/ping.go

@@ -4,18 +4,23 @@ import (
 	"strings"
 
 	"github.com/bwmarrin/discordgo"
-
 	log "github.com/sirupsen/logrus"
 )
 
 type (
-	PingHandler struct{}
+	PingHandler struct {
+		config Config
+	}
 )
 
 func NewPingHandler() *PingHandler {
 	return new(PingHandler)
 }
 
+func (h *PingHandler) SetConfig(config Config) {
+	h.config = config
+}
+
 func (h *PingHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	if m.Author.ID == s.State.User.ID {
 		return

command/random.go

@@ -34,9 +34,16 @@ type (
 		N int
 	}
 
-	CoinHandler     struct{}
-	RollHandler     struct{}
-	RouletteHandler struct{}
+	CoinHandler struct {
+		config Config
+	}
+	RollHandler struct {
+		config Config
+	}
+
+	RouletteHandler struct {
+		config Config
+	}
 )
 
 var (
@@ -146,6 +153,10 @@ func NewRollHandler() *RollHandler {
 	return new(RollHandler)
 }
 
+func (h *RollHandler) SetConfig(config Config) {
+	h.config = config
+}
+
 func (h *RollHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	var (
 		err       error
@@ -188,6 +199,10 @@ func NewRouletteHandler() *RouletteHandler {
 	return new(RouletteHandler)
 }
 
+func (h *RouletteHandler) SetConfig(config Config) {
+	h.config = config
+}
+
 func (h *RouletteHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	if m.Author.ID == s.State.User.ID {
 		return
@@ -214,6 +229,10 @@ func NewCoinHandler() *CoinHandler {
 	return new(CoinHandler)
 }
 
+func (h *CoinHandler) SetConfig(config Config) {
+	h.config = config
+}
+
 func (h *CoinHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	var (
 		c   Coin

command/time.go

@@ -10,13 +10,19 @@ import (
 )
 
 type (
-	TimeHandler struct{}
+	TimeHandler struct {
+		config Config
+	}
 )
 
 func NewTimeHandler() *TimeHandler {
 	return new(TimeHandler)
 }
 
+func (h *TimeHandler) SetConfig(config Config) {
+	h.config = config
+}
+
 func (h *TimeHandler) Handle(s *discordgo.Session, m *discordgo.MessageCreate) {
 	var (
 		t  time.Time