void web_init() {
  server.on("/set", HTTP_GET, [](AsyncWebServerRequest * request) {
    String value;
    //============================device settings=====================================
    if (request->hasArg("preset")) {
      //--------------------------------------------------------------------------------
      String value;
      value = request->getParam("preset")->value();
      if (value == "1") {
        writeFile("firmware.c.txt", readFile("configs/1-relay.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/1-relay.s.txt", 2048));
      }
      if (value == "2") {
        writeFile("firmware.c.txt", readFile("configs/2-relay.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/2-relay.s.txt", 2048));
      }
      if (value == "3") {
        writeFile("firmware.c.txt", readFile("configs/3-relay.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/3-relay.s.txt", 2048));
      }
      if (value == "4") {
        writeFile("firmware.c.txt", readFile("configs/4-relay.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/4-relay.s.txt", 2048));
      }
      if (value == "5") {
        writeFile("firmware.c.txt", readFile("configs/5-relay.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/5-relay.s.txt", 2048));
      }
      if (value == "6") {
        writeFile("firmware.c.txt", readFile("configs/6-relay.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/6-relay.s.txt", 2048));
      }
      if (value == "7") {
        writeFile("firmware.c.txt", readFile("configs/7-relay.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/7-relay.s.txt", 2048));
      }
      if (value == "8") {
        writeFile("firmware.c.txt", readFile("configs/8-pwm.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/8-pwm.s.txt", 2048));
      }
      if (value == "9") {
        writeFile("firmware.c.txt", readFile("configs/9-dht11.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/9-dht11.s.txt", 2048));
      }
      if (value == "10") {
        writeFile("firmware.c.txt", readFile("configs/10-dht22.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/10-dht22.s.txt", 2048));
      }
      if (value == "11") {
        writeFile("firmware.c.txt", readFile("configs/11-analog.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/11-analog.s.txt", 2048));
      }
      if (value == "12") {
        writeFile("firmware.c.txt", readFile("configs/12-bmp280.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/12-bmp280.s.txt", 2048));
      }
      if (value == "13") {
        writeFile("firmware.c.txt", readFile("configs/13-bme280.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/13-bme280.s.txt", 2048));
      }
      if (value == "14") {
        writeFile("firmware.c.txt", readFile("configs/14-dallas.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/14-dallas.s.txt", 2048));
      }
      if (value == "15") {
        writeFile("firmware.c.txt", readFile("configs/15-termostat.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/15-termostat.s.txt", 2048));
      }
      if (value == "16") {
        writeFile("firmware.c.txt", readFile("configs/16-level.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/16-level.s.txt", 2048));
      }
      if (value == "17") {
        writeFile("firmware.c.txt", readFile("configs/17-moution.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/17-moution.s.txt", 2048));
      }
      if (value == "18") {
        writeFile("firmware.c.txt", readFile("configs/18-moution.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/18-moution.s.txt", 2048));
      }
      if (value == "19") {
        writeFile("firmware.c.txt", readFile("configs/19-stepper.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/19-stepper.s.txt", 2048));
      }
      if (value == "20") {
        writeFile("firmware.c.txt", readFile("configs/20-servo.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/20-servo.s.txt", 2048));
      }
      if (value == "21") {
        writeFile("firmware.c.txt", readFile("configs/firmware.c.txt", 2048));
        writeFile("firmware.s.txt", readFile("configs/firmware.s.txt", 2048));
      }
      Device_init();
      Scenario_init();
      request->redirect("/?set.device");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("devinit")) {
      Device_init();
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("scen")) {
      value = request->getParam("scen")->value();
      if (value == "0") {
        jsonWriteStr(configSetupJson, "scen", value);
        saveConfig();
        Scenario_init();
      }
      if (value == "1") {
        jsonWriteStr(configSetupJson, "scen", value);
        saveConfig();
        Scenario_init();
      }
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("sceninit")) {
      Scenario_init();
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
#ifdef logging_enable
    if (request->hasArg("cleanlog")) {
      clean_log_date();
      request->send(200, "text/text", "OK");
    }
#endif
    //==============================udp settings=============================================
    if (request->hasArg("udponoff")) {
      value = request->getParam("udponoff")->value();
      if (value == "0") {
        jsonWriteStr(configSetupJson, "udponoff", value);
        saveConfig();
        Scenario_init();
      }
      if (value == "1") {
        jsonWriteStr(configSetupJson, "udponoff", value);
        saveConfig();
        Scenario_init();
      }
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("updatelist")) {
      SPIFFS.remove("/dev.csv");
      addFile("dev.csv", "device id;device name;ip address");
      request->redirect("/?set.udp");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("updatepage")) {
      request->redirect("/?set.udp");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("devname")) {
      jsonWriteStr(configSetupJson, "name", request->getParam("devname")->value());
      saveConfig();
      request->send(200, "text/text", "OK");
    }
    //==============================wifi settings=============================================
    if (request->hasArg("routerssid")) {
      jsonWriteStr(configSetupJson, "routerssid", request->getParam("routerssid")->value());
      saveConfig();
      request->send(200, "text/text", "OK");
    }
    if (request->hasArg("routerpass")) {
      jsonWriteStr(configSetupJson, "routerpass", request->getParam("routerpass")->value());
      saveConfig();
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("apssid")) {
      jsonWriteStr(configSetupJson, "apssid", request->getParam("apssid")->value());
      saveConfig();
      request->send(200, "text/text", "OK");
    }
    if (request->hasArg("appass")) {
      jsonWriteStr(configSetupJson, "appass", request->getParam("appass")->value());
      saveConfig();
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("weblogin")) {
      jsonWriteStr(configSetupJson, "weblogin", request->getParam("weblogin")->value());
      saveConfig();
      request->send(200, "text/text", "OK");
    }
    if (request->hasArg("webpass")) {
      jsonWriteStr(configSetupJson, "webpass", request->getParam("webpass")->value());
      saveConfig();
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("timezone")) {
      jsonWriteStr(configSetupJson, "timezone", request->getParam("timezone")->value());
      saveConfig();
      reconfigTime();
      request->send(200, "text/text", "OK");
    }
    if (request->hasArg("ntp")) {
      jsonWriteStr(configSetupJson, "ntp", request->getParam("ntp")->value());
      saveConfig();
      reconfigTime();
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("device")) {
      if (request->getParam("device")->value() == "ok") ESP.restart();
      request->send(200, "text/text", "OK");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("blink")) {
      value = request->getParam("blink")->value();
      if (value == "0") {
        jsonWriteStr(configSetupJson, "blink", value);
        saveConfig();
      }
      if (value == "1") {
        jsonWriteStr(configSetupJson, "blink", value);
        saveConfig();
      }
      request->send(200, "text/text", "OK");
    }
    //==============================mqtt settings=============================================
    if (request->hasArg("mqttServer")) {
      jsonWriteStr(configSetupJson, "mqttServer", request->getParam("mqttServer")->value());
      saveConfig();
      mqtt_connection = true;
      request->send(200, "text/text", "ok");
    }
    if (request->hasArg("mqttPort")) {
      int port = (request->getParam("mqttPort")->value()).toInt();
      jsonWriteInt(configSetupJson, "mqttPort", port);
      saveConfig();
      mqtt_connection = true;
      request->send(200, "text/text", "ok");
    }
    if (request->hasArg("mqttPrefix")) {
      jsonWriteStr(configSetupJson, "mqttPrefix", request->getParam("mqttPrefix")->value());
      saveConfig();
      mqtt_connection = true;
      request->send(200, "text/text", "ok");
    }
    if (request->hasArg("mqttUser")) {
      jsonWriteStr(configSetupJson, "mqttUser", request->getParam("mqttUser")->value());
      saveConfig();
      mqtt_connection = true;
      request->send(200, "text/text", "ok");
    }
    if (request->hasArg("mqttPass")) {
      jsonWriteStr(configSetupJson, "mqttPass", request->getParam("mqttPass")->value());
      saveConfig();
      mqtt_connection = true;
      request->send(200, "text/text", "ok");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("mqttsend")) {
      mqtt_send_settings_to_udp = true;
      request->send(200, "text/text", "ok");
    }
    //--------------------------------------------------------------------------------
    if (request->hasArg("mqttcheck")) {
      String tmp = "{}";
      jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>" + stateMQTT());
      jsonWriteStr(tmp, "class", "pop-up");
      request->send(200, "text/text", tmp);
    }
    //==============================push settings=============================================
#ifdef push_enable
    if (request->hasArg("pushingboxid")) {
      jsonWriteStr(configSetupJson, "pushingboxid", request->getParam("pushingboxid")->value());
      saveConfig();
      request->send(200, "text/text", "ok");
    }
#endif
    //==============================utilities settings=============================================
    if (request->hasArg("itoc")) {
      i2c_scanning = true;
      request->redirect("/?set.utilities");
    }
  });
  //==============================upgrade settings=============================================
  server.on("/check", HTTP_GET, [](AsyncWebServerRequest * request) {
    upgrade_url = true;
    Serial.print("[i] Last firmware version: ");
    Serial.println(last_version);
    String tmp = "{}";
    int case_of_update;

    if (WiFi.status() != WL_CONNECTED) last_version = "nowifi";
    if (!mb_4_of_memory) last_version = "less";

    if (last_version == firmware_version) case_of_update = 1;
    if (last_version != firmware_version) case_of_update = 2;
    if (last_version == "error") case_of_update = 3;
    if (last_version == "") case_of_update = 4;
    if (last_version == "less") case_of_update = 5;
    if (last_version == "nowifi") case_of_update = 6;
    if (last_version == "notsupported") case_of_update = 7;

    switch (case_of_update) {
      case 1: {
          jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>Последняя версия прошивки уже установлена.");
          jsonWriteStr(tmp, "class", "pop-up");
        }
        break;

      case 2: {
          jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>Имеется новая версия прошивки<a href=\"#\" class=\"btn btn-block btn-danger\" onclick=\"send_request(this, '/upgrade');setTimeout(function(){ location.href='/'; }, 120000);html('my-block','<span class=loader></span>Идет обновление прошивки, после обновления страница  перезагрузится автоматически...')\">Установить</a>");
          jsonWriteStr(tmp, "class", "pop-up");
        }
        break;

      case 3: {
          jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>Ошибка... Cервер не найден. Попробуйте позже...");
          jsonWriteStr(tmp, "class", "pop-up");
        }
        break;

      case 4: {
          jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>Нажмите на кнопку \"обновить прошивку\" повторно...");
          jsonWriteStr(tmp, "class", "pop-up");
          break;
        }

      case 5: {
          jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>Обновление по воздуху не поддерживается, модуль имеет меньше 4 мб памяти...");
          jsonWriteStr(tmp, "class", "pop-up");
          break;
        }

      case 6: {
          jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>Устройство не подключено к роутеру...");
          jsonWriteStr(tmp, "class", "pop-up");
          break;
        }

      case 7: {
          jsonWriteStr(tmp, "title", "<button class=\"close\" onclick=\"toggle('my-block')\">×</button>Обновление на новую версию возможно только через usb...");
          jsonWriteStr(tmp, "class", "pop-up");
          break;
        }
    }
    request->send(200, "text/text", tmp);
  });

  server.on("/upgrade", HTTP_GET, [](AsyncWebServerRequest * request) {
    upgrade = true;
    String tmp = "{}";
    request->send(200, "text/text", "ok");
  });
}