#include <Arduino.h>
#include <AsyncTCP.h>
#include <HTTPClient.h>
#include <Arduino_JSON.h>
#include <WiFi.h>
//#include <ESP8266WiFi.h>
#include "SPI.h"
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#include "DHTesp.h"
#include "NTPClient.h"
#include "WiFiUdp.h"

#include "icons.h"
#include <Fonts/FreeSerif9pt7b.h>
#include "OneButton.h"




int wi=0;

const int DHT_PIN = 19;
const int buttonPin = 5;

DHTesp dhtSensor;

String openWeatherMapApiKey = "7e04cc3aaf4976b9ffd56f77d83b1fa4";
String temperature_unit = "metric";
String city = "Kyiv";
String jsonBuffer;
float OutTemperature ;
float FeelsTemperature;
int OutHumidity;
String Icon;
int Sun_rise;
int Sun_set;
String endpoint;
JSONVar readings;
JSONVar owmreadings;

String inTemp,outTemp;
String inHum,outHum;
String outFeels;

unsigned long lastTimeAcc = 0;
unsigned long  OWMapDelay = 60000;
unsigned long lastTime =0;
unsigned long SensorDelay = 5000;


unsigned long  OutTime=0;
unsigned long InTime =0;
unsigned long TimeTime=0;
int currentShow=0;
int firstT=0;
int firstO =0;

int run=0;
int ftrun=0;
int forun=0;

const long utcOffsetInSeconds = 7200;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
String months[12]={"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", utcOffsetInSeconds);

  // create ezButton object for pin 13;
unsigned long prev_count = 0;


#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     -1 // Reset pin
#define SCREEN_ADDRESS 0x3C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);


OneButton button(buttonPin, true);


unsigned long currentStateStartTime = 0;
const unsigned long stateDuration = 5000; // Тривалість кожного стану у мілісекундах

enum State {
  STATE_1,
  STATE_2,
  STATE_3
};

State currentState = STATE_1;

// Змінні для відстеження того, чи вже було виведено значення для кожного стану
bool printedState1 = false;
bool printedState2 = false;
bool printedState3 = false;


ICACHE_RAM_ATTR void checkTicks() {
  // include all buttons here to be checked
  button.tick(); // just call tick() to check the state.
}


int pic =0;
int maxtime = 10000;


String httpGETRequest(const char* serverName) {
  WiFiClient client;
  HTTPClient http;
  // Your Domain name with URL path or IP address with path
  http.begin(client, serverName);
  // Send HTTP POST request
  int httpResponseCode = http.GET();
  String payload = "{}";
  if (httpResponseCode > 0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    payload = http.getString();
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();
  return payload;
}


String timeConverter(long int epoch){
  String sun;
  int hr=(epoch  % 86400L) / 3600;
    int min=(epoch % 3600) / 60;
    int sec=(epoch % 60);
    sun= String(hr)+":"+String(min);
    Serial.println(sun);
    return sun;
   
}


void getIndoor()
{
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  inTemp=String(data.temperature, 0) + "C";
  inHum = String(data.humidity, 0) + "%";
}

void getOutdoor()
{
 endpoint = "http://api.openweathermap.org/data/2.5/weather?q=" + city + "&units=" + temperature_unit  + "&appid=" + openWeatherMapApiKey;
     jsonBuffer = httpGETRequest(endpoint.c_str());
     
    JSONVar myObject = JSON.parse(jsonBuffer);
    if (JSON.typeof(myObject) == "undefined") {
      Serial.println("Parsing input failed!");
    }
     Icon = JSON.stringify(myObject["weather"][0]["icon"]);
     


    if(Icon == "\"01d\"") wi=0;
    if(Icon == "\"01n\"") wi=1;
    if(Icon == "\"02d\"") wi=2;
    if(Icon == "\"02n\"") wi=3;
     if(Icon == "\"03d\"") wi=4;
    if(Icon == "\"03n\"") wi=5;
    if(Icon == "\"04d\"") wi=6;
    if(Icon == "\"04n\"") wi=7;
    if(Icon == "\"09d\"") wi=8;
    if(Icon == "\"09n\"") wi=9;
    if(Icon == "\"10d\"") wi=10;
    if(Icon == "\"10n\"") wi=11;
     if(Icon == "\"11d\"") wi=12;
    if(Icon == "\"11n\"") wi=13;
    if(Icon == "\"13d\"") wi=14;
    if(Icon == "\"13n\"") wi=15;
    if(Icon == "\"50d\"") wi=14;
    if(Icon == "\"50n\"") wi=15;

    OutTemperature = double(myObject["main"]["temp"]);
    FeelsTemperature = double(myObject["main"]["feels_like"]);
    OutHumidity    = int(myObject["main"]["humidity"]);
    Sun_rise     = int(myObject["sys"]["sunrise"]);
    Sun_set      = int(myObject["sys"]["sunset"]);

    int timeOffset = int(myObject["timezone"]);
    Serial.println("Temperature: ");
      Serial.println(OutTemperature);
      Serial.println("OutHumidity: ");
      Serial.println(OutHumidity);
      outTemp = String(OutTemperature, 0)  +"C";
      outHum =  String(OutHumidity) + "%";
      outFeels = String(FeelsTemperature, 0)  +"C";
      
  
}


void getOutdoor12h ()
{
  endpoint = "http://api.openweathermap.org/data/2.5/forecast?q=" + city + "&units=" + temperature_unit  +"&cnt=3"+ "&appid=" + openWeatherMapApiKey;
     jsonBuffer = httpGETRequest(endpoint.c_str());
     
    JSONVar myObject = JSON.parse(jsonBuffer);
    if (JSON.typeof(myObject) == "undefined") {
      Serial.println("Parsing input failed!");
    }
}

void displayFeels()
{  display.stopscroll();
   display.clearDisplay();
   display.setTextSize(2);
 display.setCursor(60,15);
 display.print(city);
 display.setCursor(15,40);
 display.print(outFeels);
 
 
 display.startscrollright(0x00, 0x00);
 display.setCursor(0,0);
 display.setTextSize(1);
 display.println("Feels like");
 displayWiFi();
 display.display();
}


void displayIndoor()
{  display.stopscroll();
   display.clearDisplay();
   display.setTextSize(2);
 display.setCursor(45,15);
 //display.print(city);
 display.setCursor(22,40);
 display.print(inTemp);
 display.println(" "+ inHum);
 display.drawBitmap(0, 8, home , 32, 32, WHITE);
  display.drawBitmap(40, 10, thermometer_celcius_small , 24, 24, WHITE);
  display.drawBitmap(68, 10, humidity_small , 24, 24, WHITE);
 display.startscrollright(0x00, 0x00);
 display.setCursor(0,0);
 display.setTextSize(1);
 String header = "Indoor "+city;
 display.println(header);
 displayWiFi();
 display.display();
}

void displayOutdoor()
{ 
   
   display.stopscroll();
   display.clearDisplay();
   display.setTextSize(2);
   display.setCursor(45,15);
// display.print(city);
 display.setCursor(22,40);
 display.print(outTemp);
 display.println(" "+ outHum);
 
 
 display.drawBitmap(0, 8, epd_bitmap_allArray[wi] , 32, 32, WHITE);
  display.drawBitmap(40, 10, thermometer_celcius_small , 24, 24, WHITE);
  display.drawBitmap(68, 10, humidity_small , 24, 24, WHITE);
 display.startscrollright(0x00, 0x00);
 display.setCursor(0,0);
 display.setTextSize(1);
 String header = "Outdoor "+city;
 display.println(header);
 displayWiFi();
 display.display();
 
}


void displayTime(int s)
{ 
  if (s==0)
  {
  timeClient.update();
  unsigned long epochTime = timeClient.getEpochTime();
  struct tm *ptm = gmtime ((time_t *)&epochTime);
Serial.print("Day: ");

Serial.print(daysOfTheWeek[timeClient.getDay()]);
Serial.print(", ");
Serial.print(timeClient.getHours());
Serial.print(":");
Serial.print(timeClient.getMinutes());
Serial.print(":");
Serial.println(timeClient.getSeconds());

int monthDay = ptm->tm_mday;
Serial.print("Month day: ");
Serial.println(monthDay);
int currentMonth = ptm->tm_mon+1;
Serial.print("Month: ");
Serial.println(currentMonth);
Serial.println( months[currentMonth-1]);

int currentYear = ptm->tm_year+1900;
String Date = String(monthDay)+ "/" + months[currentMonth-1] + "/"+String(currentYear);

  display.stopscroll();
   display.clearDisplay();
   display.setTextSize(3);
   display.setCursor(45,15);
 //display.print(city);
 display.setCursor(16,24);
 if(timeClient.getMinutes()<10)
 display.print(String(timeClient.getHours())+":0"+String(timeClient.getMinutes()));
 else 
 display.print(String(timeClient.getHours())+":"+String(timeClient.getMinutes()));

 
 
 display.startscrollright(0x00, 0x00);
 display.setCursor(0,0);
 display.setTextSize(1);
 display.println(String(daysOfTheWeek[timeClient.getDay()]) +" "+ Date);
 //display.println(Date);
 displayWiFi();
 display.display();
  }
}

void displayWiFi()
{
  display.drawBitmap(0, 48, epd_bitmap_wifi , 16, 16, WHITE);
  //display.display();
}


 void doubleClick()  {
  Serial.println("DoubleClick() detected.");
  currentShow = 0;
   display.clearDisplay();
  //display.setFont(&FreeSerif9pt7b);
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0,28);
display.println(WiFi.localIP());
getOutdoor12h ();
display.drawBitmap(60, 40, epd_bitmap_wifi , 16, 16, WHITE);
display.display();
delay(2000);
}


int curchoice=0;
unsigned long lastmillis =0;

  void singleClick()  {
  Serial.println("SingleClick() detected.");
  lastmillis = millis();
  pic=1;
  if(curchoice>2) curchoice = 0;
  switch(curchoice)
  {
    case 0: city = "Kyiv";
    break;
    case 1: city = "Lviv";
    break;
    case 2: city = "London";
    break;
  }
   display.clearDisplay();
  //display.setFont(&FreeSerif9pt7b);
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,28);
display.println(city);
display.drawBitmap(60, 40, epd_bitmap_wifi , 16, 16, WHITE);
display.display();

getOutdoor();
curchoice++;
   
  
}



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

   
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
 
  getIndoor();
  Serial.println(inTemp);
  Serial.println(inHum);
  Serial.println("---");




  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  display.clearDisplay();
  //display.setFont(&FreeSerif9pt7b);
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0,28);
display.println("Mini Weather Station");
display.drawBitmap(60, 40, epd_bitmap_wifi , 16, 16, WHITE);
display.display();
delay(2000);
 

   Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
  //WiFi.setAutoReconnect(true);
 // WiFi.persistent(true);
  
 //attachInterrupt(digitalPinToInterrupt(buttonPin), checkTicks, CHANGE);
  button.attachClick(singleClick);
  button.attachDoubleClick(doubleClick);

  timeClient.begin();
  getOutdoor();
 
 
  Serial.println(Sun_rise);
  Serial.println(Sun_set);




display.display();

  
}



void loop() {
  

 // MUST call the loop() function first
 

 button.tick();
 delay(10);
 
 if (millis() >= (lastmillis + maxtime))
{
    pic = 0;
}

 
  if ((millis() - lastTimeAcc) > OWMapDelay) {
    // Send Events to the Web Server with the Sensor Readings
    getOutdoor();
    lastTimeAcc = millis();
  }

  if ((millis() - lastTime) > SensorDelay) {
    // Send Events to the Web Server with the Sensor Readings
    getIndoor();
    lastTime = millis();
  }

if(pic==0)
{
 unsigned long currentMillis = millis();

  // Визначення, чи потрібно змінити стан
  if (currentMillis - currentStateStartTime >= stateDuration) {
    currentStateStartTime = currentMillis; // Оновлення часу початку поточного стану
    // Скидаємо прапорці виведення для нового стану
    printedState1 = false;
    printedState2 = false;
    printedState3 = false;

    // Зміна стану
    switch (currentState) {
      case STATE_1:
        currentState = STATE_2;
        break;
      case STATE_2:
        currentState = STATE_3;
        break;
      case STATE_3:
        currentState = STATE_1;
        break;
    }
  }

  // Виконання дій залежно від поточного стану
  switch (currentState) {
    case STATE_1:
      // Дії для "Стан 1"
      if (!printedState1) {
        Serial.println("Виконуються дії для Стану 1");
        displayTime(0);
        printedState1 = true;
      }
      break;
    case STATE_2:
      // Дії для "Стан 2"
      if (!printedState2) {
        Serial.println("Виконуються дії для Стану 2");
        displayOutdoor();
        printedState2 = true;
      }
      break;
    case STATE_3:
      // Дії для "Стан 3"
      if (!printedState3) {
        Serial.println("Виконуються дії для Стану 3");
        displayIndoor();
        printedState3 = true;
      }
      break;
  }

} 


}

  
 // displayIndoor();
 // delay(5000);
 // displayOutdoor();
 // delay(5000);