move auth and favicon form main to handlers, linting

handlers/auth.go

@@ -0,0 +1,25 @@
+package handlers
+
+import (
+	"os"
+	"strings"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/basicauth"
+)
+
+func Auth() fiber.Handler {
+	userpass := os.Getenv("USERPASS")
+	if userpass != "" {
+		userpass := strings.Split(userpass, ":")
+		return basicauth.New(basicauth.Config{
+			Users: map[string]string{
+				userpass[0]: userpass[1],
+			},
+		})
+	}
+
+	return func(c *fiber.Ctx) error {
+		return c.Next()
+	}
+}