aimodels-prices/backend/middleware/auth.go

package middleware

import (
	"net/http"
	"time"

	"github.com/gin-gonic/gin"

	"aimodels-prices/database"
	"aimodels-prices/models"
)

func AuthRequired() gin.HandlerFunc {
	return func(c *gin.Context) {
		cookie, err := c.Cookie("session")
		if err != nil {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Not logged in"})
			c.Abort()
			return
		}

		var session models.Session
		if err := database.DB.Preload("User").Where("id = ? AND expires_at > ?", cookie, time.Now()).First(&session).Error; err != nil {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid or expired session"})
			c.Abort()
			return
		}

		c.Set("user", &session.User)
		c.Next()
	}
}

func AdminRequired() gin.HandlerFunc {
	return func(c *gin.Context) {
		user, exists := c.Get("user")
		if !exists {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Not logged in"})
			c.Abort()
			return
		}

		if u, ok := user.(*models.User); !ok || u.Role != "admin" {
			c.JSON(http.StatusForbidden, gin.H{"error": "Admin access required"})
			c.Abort()
			return
		}

		c.Next()
	}
}

func RequireAuth() gin.HandlerFunc {
	return func(c *gin.Context) {
		_, exists := c.Get("user")
		if !exists {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Authentication required"})
			c.Abort()
			return
		}
		c.Next()
	}
}

func RequireAdmin() gin.HandlerFunc {
	return func(c *gin.Context) {
		user, exists := c.Get("user")
		if !exists {
			c.JSON(http.StatusUnauthorized, gin.H{"error": "Authentication required"})
			c.Abort()
			return
		}

		if u, ok := user.(*models.User); !ok || u.Role != "admin" {
			c.JSON(http.StatusForbidden, gin.H{"error": "Admin access required"})
			c.Abort()
			return
		}
		c.Next()
	}
}