Initial idea

anscloud-common/include/anscloud/common/json_serializer.h

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+#pragma once
+#ifndef ANSCLOUD_COMMON_JSON_SERIALIZER_H
+#define ANSCLOUD_COMMON_JSON_SERIALIZER_H
+
+#include "types.h"
+#include <string>
+#include <vector>
+
+namespace anscloud {
+namespace json {
+
+    // Serialization (struct -> JSON string)
+    std::string serialize(const Heartbeat& hb);
+    std::string serialize(const DeviceTelemetry& tel);
+    std::string serialize(const SystemMetrics& m);
+    std::string serialize(const Command& cmd);
+    std::string serialize(const CommandResponse& resp);
+    std::string serialize(const DeviceEvent& evt);
+    std::string serialize(const DeviceStatusMessage& msg);
+    std::string serialize(const CameraInfo& cam);
+    std::string serialize(const std::vector<CameraInfo>& cams);
+    std::string serialize(const DeviceState& state);
+    std::string serialize(const std::vector<DeviceState>& states);
+    std::string serialize(const CommandResult& result);
+
+    // Deserialization (JSON string -> struct)
+    Heartbeat            deserialize_heartbeat(const std::string& json);
+    DeviceTelemetry      deserialize_telemetry(const std::string& json);
+    SystemMetrics        deserialize_metrics(const std::string& json);
+    Command              deserialize_command(const std::string& json);
+    CommandResponse      deserialize_response(const std::string& json);
+    DeviceEvent          deserialize_event(const std::string& json);
+    DeviceStatusMessage  deserialize_status_message(const std::string& json);
+    CameraInfo           deserialize_camera(const std::string& json);
+    std::vector<CameraInfo> deserialize_cameras(const std::string& json);
+    DeviceState          deserialize_device_state(const std::string& json);
+    std::vector<DeviceState> deserialize_device_states(const std::string& json);
+    CommandResult        deserialize_command_result(const std::string& json);
+
+    // Utility
+    std::string now_iso8601();
+    std::string generate_uuid();
+
+} // namespace json
+} // namespace anscloud
+
+#endif // ANSCLOUD_COMMON_JSON_SERIALIZER_H