diff --git a/main.go b/main.go
index 4a0542b..257bcb1 100644
--- a/main.go
+++ b/main.go
@@ -13,7 +13,6 @@ import (
 	"codeberg.org/arimelody/ari-stream-tools/learning"
 	"codeberg.org/arimelody/ari-stream-tools/music"
 	"codeberg.org/arimelody/ari-stream-tools/twitch"
-	"codeberg.org/arimelody/ari-stream-tools/utils/dotenv"
 	"github.com/gin-gonic/gin"
 )
 
@@ -25,13 +24,6 @@ func main() {
 	ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
 	defer cancel()
 
-	envars, err := dotenv.LoadEnv()
-	if err != nil {
-		if !os.IsNotExist(err) {
-			log.Fatalf("Failed to read .env: %v", err)
-		}
-	}
-
 	gin.SetMode(gin.ReleaseMode)
 
 	host := DEFAULT_HOST
@@ -54,9 +46,6 @@ func main() {
 	musicService := music.New(ctx)
 	twitchService, err := twitch.New(ctx, twitch.ServiceOptions{
 		Port: port,
-		ChannelName: dotenv.SafeGet(envars, "TWITCH_CHANNEL_NAME"),
-		ClientID: dotenv.SafeGet(envars, "TWITCH_CLIENT_ID"),
-		ClientSecret: dotenv.SafeGet(envars, "TWITCH_CLIENT_SECRET"),
 	})
 	if err != nil {
 		log.Fatalf("Failed to create Twitch service: %v", err)
diff --git a/twitch/twitch.go b/twitch/twitch.go
index 527bc19..6bbb478 100644
--- a/twitch/twitch.go
+++ b/twitch/twitch.go
@@ -40,9 +40,12 @@ type (
 
 	ServiceOptions struct {
 		Port int16
-		ChannelName string
-		ClientID string
-		ClientSecret string
+	}
+
+	serviceConfig struct {
+		ChannelName string `json:"channel_name"`
+		ClientID string `json:"client_id"`
+		ClientSecret string `json:"client_secret"`
 	}
 
 	Service struct {
@@ -77,6 +80,20 @@ var publicFS embed.FS
 var pagesFS embed.FS
 
 func New(ctx context.Context, opts ServiceOptions) (*Service, error) {
+	if err := os.MkdirAll(DATA_PATH, 0750); err != nil { panic(err) }
+	if err := os.MkdirAll(path.Join(DATA_PATH, "state"), 0750); err != nil { panic(err) }
+
+	var config serviceConfig
+	if configFile, err := os.OpenFile(path.Join(DATA_PATH, "twitch-config.json"), os.O_CREATE | os.O_RDWR, 0600); err != nil {
+		log.Fatalf("Failed to open twitch-config.json: %v", err)
+	} else {
+		defer configFile.Close()
+		// TODO: write template file if empty
+		if err := json.NewDecoder(configFile).Decode(&config); err != nil {
+			log.Fatalf("Failed to read twitch-config.json: %v", err)
+		}
+	}
+
 	latestFollowerC := make(chan string)
 	latestFollowerBroadcast := broadcast.NewBroadcastChannel(
 		ctx, latestFollowerC)
@@ -105,12 +122,12 @@ func New(ctx context.Context, opts ServiceOptions) (*Service, error) {
 				Broadcast: latestCheerBroadcast,
 			},
 		},
-		channelName: opts.ChannelName,
-		clientID: opts.ClientID,
-		clientSecret: opts.ClientSecret,
+		channelName: config.ChannelName,
+		clientID: config.ClientID,
+		clientSecret: config.ClientSecret,
 		oauthConfig: &oauth2.Config{
-			ClientID: opts.ClientID,
-			ClientSecret: opts.ClientSecret,
+			ClientID: config.ClientID,
+			ClientSecret: config.ClientSecret,
 			Endpoint: oauth2.Endpoint{
 				AuthURL: "https://id.twitch.tv/oauth2/authorize",
 				TokenURL: "https://id.twitch.tv/oauth2/token",
@@ -132,22 +149,18 @@ func New(ctx context.Context, opts ServiceOptions) (*Service, error) {
 		},
 	}
 
-	if err := os.MkdirAll(DATA_PATH, 0750); err != nil { panic(err) }
-	if err := os.MkdirAll(path.Join(DATA_PATH, "state"), 0750); err != nil { panic(err) }
-
-	authFile, err := os.OpenFile(path.Join(DATA_PATH, "twitch-auth.json"), os.O_RDONLY, 0600)
-	if err != nil {
+	if authFile, err := os.OpenFile(path.Join(DATA_PATH, "twitch-auth.json"), os.O_RDONLY, 0600); err != nil {
 		if !os.IsNotExist(err) {
 			log.Fatalf("Failed to open twitch-auth.json: %v", err)
 		}
 	} else {
+		defer authFile.Close()
 		srv.oauthToken = &oauth2.Token{}
 		err = json.NewDecoder(authFile).Decode(srv.oauthToken)
 		if err != nil {
 			log.Printf("Failed to read twitch-auth.json: %v", err)
 		}
 	}
-	authFile.Close()
 
 	if data, err := os.ReadFile(path.Join(DATA_PATH, "state", LABEL_LATEST_FOLLOWER)); err == nil {
 		srv.labels.LatestFollower.Text = string(data)