Move request limiter to middleware.

server/middleware/request_limiter.go

@@ -0,0 +1,34 @@
+package middleware
+
+import (
+	"nysoure/server/utils"
+	"time"
+
+	"github.com/gofiber/fiber/v3"
+	"github.com/gofiber/fiber/v3/log"
+)
+
+func NewRequestLimiter(maxRequests int, duration time.Duration) func(c fiber.Ctx) error {
+	limiter := utils.NewRequestLimiter(func() int {
+		return maxRequests
+	}, duration)
+
+	return func(c fiber.Ctx) error {
+		if !limiter.AllowRequest(c.IP()) {
+			log.Warnf("IP %s has exceeded the request limit of %d requests in %s", c.IP(), maxRequests, duration)
+			return fiber.NewError(fiber.StatusTooManyRequests, "Too many requests")
+		}
+		return c.Next()
+	}
+}
+
+func NewDynamicRequestLimiter(maxRequestsFunc func() int, duration time.Duration) func(c fiber.Ctx) error {
+	limiter := utils.NewRequestLimiter(maxRequestsFunc, duration)
+
+	return func(c fiber.Ctx) error {
+		if !limiter.AllowRequest(c.IP()) {
+			return fiber.NewError(fiber.StatusTooManyRequests, "Too many requests")
+		}
+		return c.Next()
+	}
+}