Initial commit: Эфир мессенджер

internal/api/middleware/auth.go

@@ -0,0 +1,66 @@
+package middleware
+
+import (
+	"context"
+	"messenger/internal/api/responses"
+	"messenger/internal/models"
+	"messenger/internal/service"
+	"net/http"
+	"strings"
+)
+
+type contextKey string
+
+const UserContextKey contextKey = "user"
+
+func JWTAuth(authService *service.AuthService) func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			// Получаем токен из заголовка Authorization
+			authHeader := r.Header.Get("Authorization")
+			if authHeader == "" {
+				responses.Unauthorized(w, "missing authorization header")
+				return
+			}
+
+			// Проверяем формат Bearer token
+			parts := strings.SplitN(authHeader, " ", 2)
+			if len(parts) != 2 || strings.ToLower(parts[0]) != "bearer" {
+				responses.Unauthorized(w, "invalid authorization header format")
+				return
+			}
+
+			token := parts[1]
+			
+			// Валидируем токен
+			user, err := authService.ValidateToken(token)
+			if err != nil {
+				responses.Unauthorized(w, "invalid or expired token")
+				return
+			}
+
+			// Сохраняем пользователя в контексте
+			ctx := context.WithValue(r.Context(), UserContextKey, user)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+func GetUserFromContext(ctx context.Context) *models.User {
+	user, ok := ctx.Value(UserContextKey).(*models.User)
+	if !ok {
+		return nil
+	}
+	return user
+}
+
+func RequireGlobalAdmin(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		user := GetUserFromContext(r.Context())
+		if user == nil || !user.IsGlobalAdmin() {
+			responses.Forbidden(w, "global admin access required")
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}