Expose emergency mode status in /system/info

src/core/main/app/Core.cpp

@@ -113,6 +113,7 @@ void Core::initialize() {
             {"connectivity", this->connectivity->getData().toJson()},
             {"version", "0.1.0"},
             {"onboarding", false},
+            {"emergencyMode", ctx->emergencyMode->getJsonStatus()},
         };
         return this->http->getServer()->makeJsonResponse(state.dump());
       });
@@ -131,7 +132,8 @@ void Core::initialize() {
 #endif
 
   } catch (berry::BerryErrorException& e) {
-    this->ctx->emergencyMode->trip(EmergencyModeReason::BERRY_INIT_ERROR, e.what());
+    this->ctx->emergencyMode->trip(EmergencyModeReason::BERRY_INIT_ERROR,
+                                   e.what());
   }
 
   // Initialize HTTP

src/core/main/app/EmergencyMode.cpp

@@ -48,6 +48,23 @@ bool EmergencyMode::tryServe(struct mg_connection* conn) {
   return true;
 }
 
+nlohmann::json EmergencyMode::getJsonStatus() {
+  nlohmann::json status;
+  bool isActive = this->isActive();
+  status["active"] = isActive;
+
+  if (isActive) {
+    status["reason"] = getReasonString(this->reason);
+    std::shared_lock<std::shared_mutex> lock(this->messageMutex);
+    status["message"] = this->message;
+  } else {
+    status["reason"] = nullptr;
+    status["message"] = nullptr;
+  }
+
+  return status;
+}
+
 std::string EmergencyMode::getReasonString(EmergencyModeReason reason) {
 
 #define CASE_RETURN_STR(x)     \

src/core/main/app/include/EmergencyMode.h

@@ -7,6 +7,7 @@
 #include <atomic>
 #include <shared_mutex>
 #include "civetweb.h"
+#include <nlohmann/json.hpp>
 
 namespace euph {
 
@@ -54,6 +55,19 @@ class EmergencyMode {
     */
   bool tryServe(struct mg_connection* conn);
 
+  /**
+   * @brief Get the status of the emergency mode as a JSON object.
+   * To be used as part of the /system/info endpoint.
+   *
+   * The json object contains the following fields:
+   * - active: true if emergency mode is active, false otherwise
+   * - reason: the reason why emergency mode is active (null if not active)
+   * - message: an optional message with additional information (null if not active)
+   * 
+   * @return nlohmann::json Status information.
+   */
+  nlohmann::json getJsonStatus();
+
   /**
    * @brief Returns a human-readable string for the given emergency mode reason.
    *