setting and scenario in chat stat

database/mongo.go

@@ -15,11 +15,16 @@ var MongoClient *mongo.Client
 func ConnectMongo() {
 	var err error
 	opts := options.Client()
-	host, exists := os.LookupEnv("MONGO_HOST")
-	if !exists {
+	host, ok := os.LookupEnv("MONGO_HOST")
+	if !ok {
 		host = "localhost"
 	}
-	opts = opts.ApplyURI(fmt.Sprintf("mongodb://%s:%s@%s:27017", os.Getenv("MONGO_USER"), os.Getenv("MONGO_PASS"), host))
+	opts = opts.ApplyURI(fmt.Sprintf(
+		"mongodb://%s:%s@%s:27017",
+		os.Getenv("MONGO_USER"),
+		os.Getenv("MONGO_PASS"),
+		host,
+	))
 	opts = opts.SetCompressors([]string{"snappy", "zlib", "zstd"})
 	MongoClient, err = mongo.Connect(opts)
 	if err != nil {