apskel-pos-backend/internal/middlewares/cors.go

package middlewares

import (
	"fmt"
	"net/http"

	"github.com/gin-gonic/gin"

	"furtuna-be/internal/common/logger"
)

func Cors() gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Header("Access-Control-Allow-Origin", "*")
		c.Header("Access-Control-Allow-Origin", "http://localhost:3000")
		c.Header("Access-Control-Allow-Credentials", "true")
		c.Header("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, Accept, origin, Referer, Cache-Control, X-Requested-With")
		c.Header("Access-Control-Allow-Methods", "POST,HEAD,PATCH, OPTIONS, GET, PUT, DELETE")
		c.Header("Vary", "Origin")

		if c.Request.Method == "OPTIONS" {
			c.AbortWithStatus(204)
			return
		}

		c.Next()
	}
}

func LogCorsError() gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Next()

		// check if the request was blocked due to CORS
		if c.Writer.Status() == http.StatusForbidden && c.Writer.Header().Get("Access-Control-Allow-Origin") == "" {
			logger.GetLogger().Error(fmt.Sprintf("CORS error: %s", c.Writer.Header().Get("Access-Control-Allow-Origin")))
		}
	}
}