package middlewares

import "github.com/gin-gonic/gin"

// CORSMiddleware 解决跨域问题的中间件
func CORSMiddleware() 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")

		c.Writer.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
		c.Writer.Header().Set("Pragma", "no-cache")
		c.Writer.Header().Set("Expires", "0")
		c.Next()
		if c.Request.Method == "OPTIONS" {
			c.AbortWithStatus(204)
			return
		}

		c.Next()
	}
}