feat: add frontend + backend + database to retrieve and compute news from Yahoo

backend/internal/auth/middleware.go

@@ -0,0 +1,37 @@
+package auth
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+func Middleware(secret string) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		header := c.GetHeader("Authorization")
+		if !strings.HasPrefix(header, "Bearer ") {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "missing token"})
+			return
+		}
+		claims, err := ValidateToken(strings.TrimPrefix(header, "Bearer "), secret)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
+			return
+		}
+		c.Set("userID", claims.UserID)
+		c.Set("email", claims.Email)
+		c.Set("role", claims.Role)
+		c.Next()
+	}
+}
+
+func AdminOnly() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if c.GetString("role") != "admin" {
+			c.AbortWithStatusJSON(http.StatusForbidden, gin.H{"error": "admin only"})
+			return
+		}
+		c.Next()
+	}
+}