#include <WiFiManager.h> // https://github.com/tzapu/WiFiManager
WiFiManager wm;

void setup() {
    WiFi.mode(WIFI_STA);
    Serial.begin(115200);
    Serial.setDebugOutput(true);
    delay(3000);
    Serial.println("\n Starting");

    // wm.resetSettings(); // wipe credentials for testing

    // custom input field
    int customFieldLength = 40;

    // new (&custom_field) WiFiManagerParameter("customfieldid", "Custom Field Label", "Custom Field Value", customFieldLength,"placeholder=\"Custom Field Placeholder\"");
  
    // test custom html input type(checkbox)
    // new (&custom_field) WiFiManagerParameter("customfieldid", "Custom Field Label", "Custom Field Value", customFieldLength,"placeholder=\"Custom Field Placeholder\" type=\"checkbox\""); // custom html type
    
    // test custom html(radio)
    // const char* custom_radio_str = "<br/><label for='customfieldid'>Custom Field Label</label><input type='radio' name='customfieldid' value='1' checked> One<br><input type='radio' name='customfieldid' value='2'> Two<br><input type='radio' name='customfieldid' value='3'> Three";
    // new (&custom_field) WiFiManagerParameter(custom_radio_str); // custom html input
    
    // wm.addParameter(&custom_field);
    wm.setSaveParamsCallback(saveParamCallback);

    // custom menu via array or vector
    // 
    // menu tokens, "wifi","wifinoscan","info","param","close","sep","erase","restart","exit" (sep is seperator) (if param is in menu, params will not show up in wifi page!)
    // const char* menu[] = {"wifi","info","param","sep","restart","exit"}; 
    // wm.setMenu(menu,6);
    std::vector<const char *> menu = {"wifi","info","param","sep","restart","exit"};
    wm.setMenu(menu);

    // set dark theme
    wm.setClass("invert");

    //set static ip
    // wm.setSTAStaticIPConfig(IPAddress(10,0,1,99), IPAddress(10,0,1,1), IPAddress(255,255,255,0)); // set static ip,gw,sn
    // wm.setShowStaticFields(true); // force show static ip fields
    // wm.setShowDnsFields(true);    // force show dns field always

    wm.setConfigPortalBlocking(false);
    // wm.setConnectTimeout(20); // how long to try to connect for before continuing
    wm.setConfigPortalTimeout(90);
    // wm.setCaptivePortalEnable(false); // disable captive portal redirection
    // wm.setAPClientCheck(true); // avoid timeout if client connected to softap
    
    // wifi scan settings
    // wm.setRemoveDuplicateAPs(false); // do not remove duplicate ap names (true)
    wm.setMinimumSignalQuality(20);  // set min RSSI (percentage) to show in scans, null = 8%
    // wm.setShowInfoErase(false);      // do not show erase button on info page
    // wm.setScanDispPerc(true);       // show RSSI as percentage not graph icons
    
    // wm.setBreakAfterConfig(true);   // always exit configportal even if wifi save fails

    bool res;

    // testing purposes
    res = wm.autoConnect("ESP32"); // auto generated AP name from chipid

    // add the password as the second parameter. 
    // consider using 8 characters or more (8 to 63 ASCII-encoded characters in the range of 32 to 126 (decimal))
    // res = wm.autoConnect("AutoConnectAP","password"); // password protected ap

    if(!res) {
      Serial.println("Failed to connect or hit timeout");
      // ESP.restart();
    } 
    else { Serial.println("Connected!"); }


    //automatically connect using saved credentials if they exist
    //If connection fails it starts an access point with the specified name
    if(wm.autoConnect("ESP32")){
        Serial.println("Connected!");
    }
    else {
        Serial.println("Configportal running");
    }
}

String getParam(String name){
  //read parameter from server, for customhmtl input
  String value;
  if(wm.server->hasArg(name)) {
    value = wm.server->arg(name);
  }
  return value;
}

void saveParamCallback(){
  Serial.println("[CALLBACK] saveParamCallback fired");
  Serial.println("PARAM customfieldid = " + getParam("customfieldid"));
}

void loop() {
    wm.process();
    // put your main code here, to run repeatedly:
}