web_api.h

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#pragma once
 
#include <uwebsockets/App.h>
 
#include <functional>
#include <nlohmann/json.hpp>
#include <string>
#include <string_view>
 
namespace mm::node {
class DeviceManager;
class MonitoringManager;
}  // namespace mm::node
 
namespace mm::api {
 
struct RouteContext {
  mm::node::DeviceManager& deviceManager;
  mm::node::MonitoringManager& monitoringManager;
  std::string_view corsOrigin;
};
 
using RegisterRoutesFn = std::function<void(uWS::SSLApp& app, const RouteContext& ctx)>;
 
template <typename Res>
void sendJson(Res* res, std::string_view corsOrigin, const nlohmann::json& body) {
  res->writeHeader("Content-Type", "application/json")
      ->writeHeader("Access-Control-Allow-Origin", corsOrigin)
      ->end(body.dump(-1, ' ', false, nlohmann::json::error_handler_t::replace));
}
 
template <typename Res>
void sendError(Res* res, std::string_view status, std::string_view corsOrigin,
               std::string_view message) {
  res->writeStatus(status)
      ->writeHeader("Content-Type", "application/json")
      ->writeHeader("Access-Control-Allow-Origin", corsOrigin)
      ->end(nlohmann::json{{"error", std::string(message)}}.dump());
}
 
template <typename Res>
void sendStatus(Res* res, std::string_view status, std::string_view corsOrigin) {
  res->writeStatus(status)->writeHeader("Access-Control-Allow-Origin", corsOrigin)->end();
}
 
}  // namespace mm::api