package api

import (
	"time"

	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/limiter"
)

func RateLimitMiddleware() fiber.Handler {
	return limiter.New(limiter.Config{
		Max:        100,              // 100 requests
		Expiration: 1 * time.Minute,  // per minute
		KeyGenerator: func(c *fiber.Ctx) string {
			// Use API key or IP for rate limiting
			if key := c.Locals("api_key"); key != nil {
				return key.(string)
			}
			return c.IP()
		},
		LimitReached: func(c *fiber.Ctx) error {
			return c.Status(429).JSON(fiber.Map{
				"error": "Rate limit exceeded",
			})
		},
	})
}