package middleware

import (
	"github.com/gin-gonic/gin"
	"net/http"
)

// 处理跨域请求,支持options访问
func Cors() gin.HandlerFunc {
	return func(c *gin.Context) {
		method := c.Request.Method
		origin := c.Request.Header.Get("Origin")
		c.Header("Access-Control-Allow-Origin", origin)
		c.Header("Access-Control-Allow-Headers", "Content-Type,AccessToken,X-CSRF-Token, Authorization, Token,X-Token,X-User-Id,X-Requested-With")
		c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS,DELETE,PUT")
		c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type")
		c.Header("Access-Control-Allow-Credentials", "true")

		// 放行所有OPTIONS方法
		if method == "OPTIONS" {
			c.AbortWithStatus(http.StatusNoContent)
		}
		// 处理请求
		c.Next()
	}
}

//func Cors() gin.HandlerFunc {
//	return func(c *gin.Context) {
//		method := c.Request.Method
//		origin := c.Request.Header.Get("Origin")
//		if origin != "" {
//			c.Header("Access-Control-Allow-Origin", "*") // 可将将 * 替换为指定的域名
//			c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE, UPDATE")
//			c.Header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization")
//			c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Cache-Control, Content-Language, Content-Type")
//			c.Header("Access-Control-Allow-Credentials", "true")
//		}
//		if method == "OPTIONS" {
//			c.AbortWithStatus(http.StatusNoContent)
//		}
//		c.Next()
//	}
//}
