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#include <PxMatrix.h>
#include <WiFi.h>   
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <TimeLib.h>

#define P_LAT 22
#define P_A 19
#define P_B 23
#define P_C 18
#define P_D 5
#define P_E 15
#define P_OE 2

const char* ssid = "NETIASPOT-2.4GHz-13B5C8";
const char* password = "PqJhsksjbLl";
const char* apiKey = "6b7eaec7fcbsosudneozbf";
const char* city = "Lodz";
const char* timezone = "Europe/Warsaw"; // Example: "Europe/Warsaw"

const char* serverName = "http://api.openweathermap.org/data/2.5/weather?q=";
const char* units = "&units=metric";
const char* apiKeyStr = "&appid=";

hw_timer_t * timer = NULL;
portMUX_TYPE timerMux = portMUX_INITIALIZER_UNLOCKED;

uint8_t display_draw_time=0;

PxMATRIX display(64,32,P_LAT, P_OE,P_A,P_B,P_C,P_D);


uint16_t myRED = display.color565(255, 0, 0);
uint16_t myGREEN = display.color565(0, 255, 0);
uint16_t myBLUE = display.color565(0, 0, 255);
uint16_t myWHITE = display.color565(255, 255, 255);
uint16_t myYELLOW = display.color565(255, 255, 0);
uint16_t myCYAN = display.color565(0, 255, 255);
uint16_t myMAGENTA = display.color565(255, 0, 255);
uint16_t myBLACK = display.color565(0, 0, 0);

void IRAM_ATTR display_updater(){
  portENTER_CRITICAL_ISR(&timerMux);
  display.display(display_draw_time);
  portEXIT_CRITICAL_ISR(&timerMux);
}

void display_update_enable(bool is_enable)
{
if (is_enable)
  {
    timer = timerBegin(0, 80, true);
    timerAttachInterrupt(timer, &display_updater, true);
    timerAlarmWrite(timer, 2000, true);
    timerAlarmEnable(timer);
  }
else
  {
    timerDetachInterrupt(timer);
    timerAlarmDisable(timer);
  }
}

void setup() 
{  
  Serial.begin(115200);

  configTime(3600, 0, "pool.ntp.org");

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi!");

  display.begin(16);
  display.setFastUpdate(true);
  display_update_enable(true);
  //display.setBrightness(80);
}

void loop() 
{
  
  display.clearDisplay();

  time_t now = time(nullptr);
  struct tm* timeinfo = localtime(&now);
  
  char currentTime[6];
  strftime(currentTime, sizeof(currentTime), "%H:%M", timeinfo);
  display.setCursor(3, 1);
  display.setTextSize(2);
  display.setTextColor(myCYAN);
  display.print(currentTime);

  char currentWeekday[15];
  strftime(currentWeekday, sizeof(currentWeekday), "%a", timeinfo);
  if (strcmp(currentWeekday, "Mon") == 0)
    strcpy(currentWeekday, "Pn");
  else if (strcmp(currentWeekday, "Tue") == 0)
    strcpy(currentWeekday, "Wt");
  else if (strcmp(currentWeekday, "Wed") == 0)
    strcpy(currentWeekday, "Śr");
  else if (strcmp(currentWeekday, "Thu") == 0)
    strcpy(currentWeekday, "Cz");
  else if (strcmp(currentWeekday, "Fri") == 0)
    strcpy(currentWeekday, "Pt");
  else if (strcmp(currentWeekday, "Sat") == 0)
    strcpy(currentWeekday, "So");
  else if (strcmp(currentWeekday, "Sun") == 0)
    strcpy(currentWeekday, "Nd");
  
  display.setCursor(2, 16);
  display.setTextColor(myRED);
  display.setTextSize(1);
  display.print(currentWeekday);

  char currentDate[6];
  strftime(currentDate, sizeof(currentDate), "%d/%m", timeinfo);
  display.setCursor(17, 16);
  display.setTextColor(myGREEN);
  display.setTextSize(1);
  display.print(currentDate);

  char currentSecond[3];
  strftime(currentSecond, sizeof(currentSecond), "%S", timeinfo);
  display.setCursor(50, 16);
  display.setTextColor(myCYAN);
  display.setTextSize(1);
  display.print(currentSecond);

  getWeatherData();
  
  delay(1000);
}

void getWeatherData() {

  String url = String(serverName) + String(city) + String(units) + String(apiKeyStr) + String(apiKey);

  HTTPClient http;

  http.begin(url);

  int httpCode = http.GET();

  if (httpCode > 0) {

    String payload = http.getString();

    DynamicJsonDocument doc(1024);
    deserializeJson(doc, payload);

    float pressure = doc["main"]["pressure"];
    display.setCursor(2,24);
    display.setTextColor(myMAGENTA);
    display.setTextSize(1);
    display.printf("%.0f", pressure);

    float temperature = doc["main"]["temp"];
    display.setCursor(35,24);
    display.setTextColor(myYELLOW);
    display.setTextSize(1);
    display.printf("%.1f", temperature);
    display.drawRect(59, 24, 2, 2, myYELLOW);
  }

  http.end();
}