#include <EEPROM.h>
#include <Arduino.h>

#include <WiFiClient.h>


const int buttonPin = 21; // the number of the pushbutton pin

// Pressbutton
int Press_Time = 2; 
const int LONG_PRESS_TIME  = 1000 * Press_Time; // 1000 milliseconds
int lastState = LOW;  // the previous state from the input pin
int currentState = HIGH;     // the current reading from the input pin
unsigned long pressedTime  = 0;
unsigned long releasedTime  = 0;
unsigned long pressDuration = 0;
bool isPressing = false;
bool isLongDetected = false;

int debounceDelay = 50; // May be replaced by a larger value for heavy bouncing buttons

const int CONF_ADDRESS = 0;
const int SSID_ADDRESS = 10;
const int PASS_ADDRESS = 30;
const int HOST_ADDRESS = 50;
const int PORT_ADDRESS = 100;
const int TXID_ADDRESS = 110;
const int RXID_ADDRESS = 120;
const int LAT_ADDRESS  = 130;
const int LONG_ADDRESS = 150;

// Structure to hold configuration data
struct Config {
  String isconfig;
  String ssid;
  String password;
  String host;
  String port;
  String txid;
  String rxid;
  String lat;
  String lng;
};

Config config;


void saveStringToEEPROM(int address, const String& data) {
  // Get the length of the string
  int length = data.length();

  // Write the length of the string to the EEPROM
  EEPROM.write(address, length);

  // Write each character of the string to the EEPROM
  for (int i = 0; i < length; i++) {
    EEPROM.write(address + 1 + i, data[i]);  // Skip 1 byte for the length
  }
  // Add a null terminator at the end of the string
  EEPROM.write(address + 1 + length, '\0');
  EEPROM.commit();
}

String loadStringFromEEPROM(int address) {
  // Read the length of the string from the EEPROM
  int length = EEPROM.read(address);

  // Read each character of the string from the EEPROM
  String loadedString = "";
  for (int i = 0; i < length; i++) {
    char character = EEPROM.read(address + 1 + i);
    loadedString += character;
  }

  return loadedString;
}


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  EEPROM.begin(512);

  // Setup pin for push button
  pinMode(buttonPin, INPUT);  
  digitalWrite(buttonPin, HIGH);

  // Load configuration
  config.isconfig = loadStringFromEEPROM(CONF_ADDRESS);
  if ((config.isconfig) == "Y") {
     
     config.host = loadStringFromEEPROM(HOST_ADDRESS);
     config.port = loadStringFromEEPROM(PORT_ADDRESS);
     config.ssid = loadStringFromEEPROM(SSID_ADDRESS);
     config.password = loadStringFromEEPROM(PASS_ADDRESS);
     config.txid = loadStringFromEEPROM(TXID_ADDRESS);
     config.rxid = loadStringFromEEPROM(RXID_ADDRESS);
     config.lat = loadStringFromEEPROM(LAT_ADDRESS);
     config.lng = loadStringFromEEPROM(LONG_ADDRESS);
  } 
  else
  {
     config.host = "ecsserv.rast.or.th/postmcu";
     config.port = "80";
     config.ssid = "HS2JFW";
     config.password = "0123456789";
     config.txid = "9A";
     config.rxid = "9A";
     config.lat = "13.7581492";
     config.lng = "100.5549858";

     saveStringToEEPROM(CONF_ADDRESS,"Y");
     saveStringToEEPROM(HOST_ADDRESS,config.host);
     saveStringToEEPROM(PORT_ADDRESS,config.port);
     saveStringToEEPROM(SSID_ADDRESS,config.ssid);
     saveStringToEEPROM(PASS_ADDRESS,config.password);
     saveStringToEEPROM(TXID_ADDRESS,config.txid);
     saveStringToEEPROM(RXID_ADDRESS,config.rxid);
     saveStringToEEPROM(LAT_ADDRESS,config.lat);
     saveStringToEEPROM(LONG_ADDRESS,config.lng);
  }
  
}

void PushButton()
{
  
  isLongDetected = false;
  pressDuration = 0;
  pressedTime = 0;
  releasedTime = 0;  
  currentState = digitalRead(buttonPin); // read the state of the button

  if (currentState == LOW) {        // button is pressed
    pressedTime = millis();
    static int lastTimeStamp = 0;
       if (pressedTime - lastTimeStamp > debounceDelay) {
          while (currentState == LOW) {
             releasedTime = millis();
             currentState = digitalRead(buttonPin);
          }
          isPressing = true;
          Serial.println("Press is detected");
       }
    lastTimeStamp = pressedTime;
    pressDuration = releasedTime - pressedTime;
    
    Serial.println("Press is released");
    Serial.println(pressedTime);
    Serial.println(releasedTime);
    Serial.println(pressDuration);
   
    if( pressDuration > LONG_PRESS_TIME ) {
      Serial.println("A long press is detected");    
      isLongDetected = true;
    }         
  }   
  if (isLongDetected) {
        
        Serial.println("Post API...");
          
        
  
  // save the the last state
  lastState = currentState;
}
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  PushButton();
  
}