refac: debt on role backend

api/middleware/optionalAccess.go

@@ -0,0 +1,53 @@
+package middleware
+
+import (
+	"RenewCMS/api/pkg/access"
+	"RenewCMS/api/pkg/claims"
+	"RenewCMS/internal/domain/user"
+	"RenewCMS/internal/infrastructure/useCases"
+	"errors"
+	"net/http"
+)
+
+func OptionalAccess(getUser *useCases.GetUserUseCase, check *useCases.CheckPermissionUseCase) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			r = access.WithCurrentUser(r)
+			account, signedIn, err := verifiedAccount(getUser, r)
+			if err != nil {
+				http.Error(w, "Internal server error", http.StatusInternalServerError)
+				return
+			}
+			if !signedIn {
+				next.ServeHTTP(w, r)
+				return
+			}
+			grants, err := check.Grants(account)
+			if err != nil {
+				http.Error(w, "Internal server error", http.StatusInternalServerError)
+				return
+			}
+			caller := access.Caller{UserID: account.ID, Grants: grants}
+			next.ServeHTTP(w, r.WithContext(access.WithCaller(r.Context(), caller)))
+		})
+	}
+}
+
+func verifiedAccount(getUser *useCases.GetUserUseCase, r *http.Request) (user.User, bool, error) {
+	userID, ok := claims.UserId(r)
+	if !ok {
+		return user.User{}, false, nil
+	}
+	account, err := access.LoadUser(getUser, r, userID)
+	if errors.Is(err, user.ErrUserNotFound) {
+		return user.User{}, false, nil
+	}
+	if err != nil {
+		return user.User{}, false, err
+	}
+	tokenVersion, ok := claims.TokenVersion(r)
+	if !ok || tokenVersion != account.TokenVersion {
+		return user.User{}, false, nil
+	}
+	return account, account.IsVerified, nil
+}