#include <Adafruit_SSD1306.h>
#include <ArduinoJson.h>
#include <HTTPClient.h>
#include <WiFi.h>
#include <Wire.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

HTTPClient http;
const String weatherURL = "https://api.openweathermap.org/data/2.5/weather?q=Izhevsk&mode=json&units=metric&appid=008085524361f23db75cbf869044bbba";

void setup() {
  Serial.begin(115200);
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Don't proceed, loop forever
  }
  display.display();
  delay(1000);
  display.clearDisplay();
  display.setTextSize(1);           
  display.setTextColor(SSD1306_WHITE);      
  display.setCursor(0,0); 
  display.println("Connecting to WiFi...");
  display.display();
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
  display.print("Connected to ");
  display.println("Wokwi-GUEST");
  display.display();
  delay(5000);
}

void loop() {
  if (WiFi.status() == WL_CONNECTED)
  {
    http.begin(weatherURL);
    int httpCode = http.GET();    
    Serial.print("HTTP Code: ");
    Serial.println(httpCode);
    if (httpCode > 0)
    {
      StaticJsonDocument<768> doc;
      DeserializationError error = deserializeJson(doc, http.getString());
      if (error) {
        Serial.print(F("deserializeJson failed: "));
        Serial.println(error.f_str());
        delay(2500);
        return;
      }
      
      String weather = doc["weather"][0]["main"];
      String temperature = doc["main"]["temp"];
      String feeltemp = doc["main"]["feels_like"];

      display.clearDisplay();
      display.setTextSize(1);
      printCenter("Izhevsk", 0, 0);
      display.setTextSize(1);
      printCenter("Curr weather: " + weather, 0, 15);
      display.setTextSize(1);
      printCenter("Curr temp: " + temperature, 0, 30);
      display.setTextSize(1);
      printCenter("Feels like: " + feeltemp, 0, 45);
      display.display();
    }
    delay(600000);
  }
}

void printCenter(const String buf, int x, int y)
{
  int16_t x1, y1;
  uint16_t w, h;
  display.getTextBounds(buf, x, y, &x1, &y1, &w, &h); //calc width of new string
  display.setCursor((x - w / 2) + (128 / 2), y);
  display.print(buf);
}