middleware.go

package middleware

import (
	"net/http"
	"time"

	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

const (
	httpStatusInternalServerError = 500
	httpStatusNoContent           = 204
)

func RequestLogger(logger *zap.Logger) gin.HandlerFunc {
	return func(c *gin.Context) {
		start := time.Now()
		path := c.Request.URL.Path
		query := c.Request.URL.RawQuery

		c.Next()

		latency := time.Since(start)
		logger.Info("HTTP Request",
			zap.Int("status", c.Writer.Status()),
			zap.String("method", c.Request.Method),
			zap.String("path", path),
			zap.String("query", query),
			zap.String("ip", c.ClientIP()),
			zap.String("user-agent", c.Request.UserAgent()),
			zap.Duration("latency", latency),
		)
	}
}

func Recovery(logger *zap.Logger) gin.HandlerFunc {
	return gin.CustomRecovery(func(c *gin.Context, recovered any) {
		logger.Error("Panic recovered",
			zap.Any("error", recovered),
			zap.String("path", c.Request.URL.Path),
		)
		c.AbortWithStatus(httpStatusInternalServerError)
	})
}

func CORS() gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
		c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
		c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE, PATCH")

		if c.Request.Method == http.MethodOptions {
			c.AbortWithStatus(httpStatusNoContent)
			return
		}

		c.Next()
	}
}