BingPaper/internal/http/middleware/auth.go

package middleware

import (
	"net/http"
	"strings"

	"BingPaper/internal/service/token"

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

func AuthMiddleware() gin.HandlerFunc {
	return func(c *gin.Context) {
		authHeader := c.GetHeader("Authorization")
		if authHeader == "" {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Authorization header required"})
			c.Abort()
			return
		}

		parts := strings.SplitN(authHeader, " ", 2)
		if !(len(parts) == 2 && parts[0] == "Bearer") {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid authorization header format"})
			c.Abort()
			return
		}

		t, err := token.ValidateToken(parts[1])
		if err != nil {
			c.JSON(http.StatusUnauthorized, gin.H{"error": err.Error()})
			c.Abort()
			return
		}

		c.Set("token", t)
		c.Next()
	}
}