add factory reset endpoint

lib/app/app.cpp

@@ -171,6 +171,18 @@ void loopApp()
  */
 void setupApiSettings()
 {
+	server.on("/api/settings/reset", HTTP_GET, [](AsyncWebServerRequest *request) {
+		if (request->hasParam("confirmed"))
+		{
+			Serial.println("factory reset");
+			settingsFactoryReset();
+
+			ESP.restart();
+		}
+
+		request->send(200, "application/json; charset=utf-8", "{}");
+	});
+
 	server.on("/api/settings", HTTP_GET, [](AsyncWebServerRequest *request) {
 		AsyncResponseStream *response = request->beginResponseStream("application/json");
 		DynamicJsonDocument root(1024);

lib/settings/settings.cpp

@@ -4,3 +4,10 @@ void setupSettings()
 {
 	NVS.begin();
 }
+
+void settingsFactoryReset()
+{
+	NVS.eraseAll();
+
+	// TODO remove also json db file
+}

lib/settings/settings.h

@@ -4,8 +4,7 @@
 #include "ArduinoNvs.h"
 
 void setupSettings();
-
-//extern Settings = NVS;
+void settingsFactoryReset();
 
 
 #endif