add basic validation in auth request

auth/handlers.go

@@ -1,11 +1,31 @@
 package auth
 
 import (
-	"errors"
-
+	"github.com/go-playground/validator/v10"
 	"github.com/gofiber/fiber/v2"
 )
 
 func AuthHandler(c *fiber.Ctx) error {
-	return errors.New("not implemented")
+	validate := validator.New()
+
+	var req AuthRequest
+
+	if err := c.BodyParser(&req); err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error":   "Invalid JSON format",
+			"details": err.Error(),
+		})
+	}
+
+	if err := validate.Struct(&req); err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error":   "Validation failed",
+			"details": err.Error(),
+		})
+	}
+
+	return c.Status(fiber.StatusOK).JSON(fiber.Map{
+		"message": "Authentication request processed successfully",
+		"data":    req,
+	})
 }