refactor: move module system to core and make it work

1 files changed, 107 insertions, 0 deletions

diff --git a/src/core/module/Module.cpp b/src/core/module/Module.cpp
new file mode 100644
index 00000000..d84b74af
--- /dev/null
+++ b/src/core/module/Module.cpp
@@ -0,0 +1,107 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#include "Module.h"
+
+#include <memory>
+
+#include "core/module/GlobalModuleContext.h"
+
+namespace GpgFrontend::Module {
+
+class Module::Impl {
+ public:
+  friend class GlobalModuleContext;
+
+  Impl(ModuleIdentifier id, ModuleVersion version, ModuleMetaData meta_data)
+      : identifier_((boost::format("__module_%1%") % id).str()),
+        version_(version),
+        meta_data_(meta_data) {}
+
+  int GetChannel() {
+    return get_global_module_context()->GetChannel(self_shared_ptr_);
+  }
+
+  int GetDefaultChannel() {
+    return get_global_module_context()->GetDefaultChannel(self_shared_ptr_);
+  }
+
+  std::optional<TaskRunnerPtr> GetTaskRunner() {
+    return get_global_module_context()->GetTaskRunner(self_shared_ptr_);
+  }
+
+  bool ListenEvent(EventIdentifier event) {
+    return get_global_module_context()->ListenEvent(gpc_get_identifier(),
+                                                    event);
+  }
+
+  ModuleIdentifier GetModuleIdentifier() const { return identifier_; }
+
+  void SetGPC(GlobalModuleContextPtr gpc) { gpc_ = gpc; }
+
+ private:
+  GlobalModuleContextPtr gpc_;
+  const std::shared_ptr<Module> self_shared_ptr_;
+  const ModuleIdentifier identifier_;
+  const ModuleVersion version_;
+  const ModuleMetaData meta_data_;
+
+  ModuleIdentifier gpc_get_identifier() { return identifier_; }
+
+  const GlobalModuleContextPtr get_global_module_context() {
+    if (gpc_ == nullptr) {
+      throw std::runtime_error("module is not registered by module manager");
+    }
+    return gpc_;
+  }
+};
+
+Module::Module(ModuleIdentifier id, ModuleVersion version,
+               ModuleMetaData meta_data)
+    : p_(std::make_unique<Impl>(id, version, meta_data)) {}
+
+Module::~Module() = default;
+
+int Module::getChannel() { return p_->GetChannel(); }
+
+int Module::getDefaultChannel() { return p_->GetDefaultChannel(); }
+
+TaskRunnerPtr Module::getTaskRunner() {
+  return p_->GetTaskRunner().value_or(nullptr);
+}
+
+bool Module::listenEvent(EventIdentifier event) {
+  return p_->ListenEvent(event);
+}
+
+ModuleIdentifier Module::GetModuleIdentifier() const {
+  return p_->GetModuleIdentifier();
+}
+
+void Module::SetGPC(GlobalModuleContextPtr gpc) { p_->SetGPC(gpc); }
+}  // namespace GpgFrontend::Module
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