feat(key-server): add batch key operations

- support batch refresh and publish actions for key selections
- add publication status checking through the key server
- manage request ownership, spacing, cancellation, and summaries
- normalize duplicate keys and combine fetched blocks for import
- add UI actions for selected keys and key detail views
- add unit tests for batch logic and optional test integration

1 files changed, 79 insertions, 0 deletions

diff --git a/src/m_key_server_sync/KeyServerBatchLogic.h b/src/m_key_server_sync/KeyServerBatchLogic.h
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+++ b/src/m_key_server_sync/KeyServerBatchLogic.h
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+/**
+ * Copyright (C) 2021-2024 Saturneric <[email protected]>
+ *
+ * This file is part of GpgFrontend.
+ *
+ * GpgFrontend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GpgFrontend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from
+ * the gpg4usb project, which is under GPL-3.0-or-later.
+ *
+ * All the source code of GpgFrontend was modified and released by
+ * Saturneric <[email protected]> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#pragma once
+
+#include <QByteArray>
+#include <QList>
+#include <QString>
+#include <QStringList>
+#include <optional>
+
+/**
+ * @file KeyServerBatchLogic.h
+ * @brief The decisions a batch of key-server operations makes, without the
+ * network or the SDK, so they can be tested on their own.
+ */
+namespace KeyServerBatchLogic {
+
+/// One key a batch acts on: the part of the Host's key reference it needs.
+struct BatchKey {
+  qint64 channel = 0;
+  QString key_id;
+  QString fingerprint;
+};
+
+/**
+ * @brief The keys a command was given, as one list.
+ *
+ * A command is given either one key (the key details dialog) or a selection
+ * (a key list). Both together are merged; a key named twice, by fingerprint,
+ * is acted on once, in the order it was first named. Keys without a
+ * fingerprint are dropped: there is nothing to fetch or publish them by.
+ */
+auto Normalise(const std::optional<BatchKey>& key,
+               const std::optional<QList<BatchKey>>& keys) -> QList<BatchKey>;
+
+/**
+ * @brief Several fetched key blocks as one import payload.
+ *
+ * One import means one dialog for the whole batch. Each block ends in a
+ * newline so the next one's armor header starts on a line of its own; empty
+ * blocks are skipped.
+ */
+auto JoinForImport(const QList<QByteArray>& blocks) -> QByteArray;
+
+/// What a finished refresh says, e.g. "3 of 4 keys fetched" plus failures.
+auto RefreshSummary(int fetched, int total, const QStringList& failures)
+    -> QString;
+
+/// What a finished publish says, e.g. "2 of 2 keys published" plus failures.
+auto PublishSummary(int published, int total, const QString& host,
+                    const QStringList& failures) -> QString;
+
+}  // namespace KeyServerBatchLogic