#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h> // Include ArduinoJson library

HTTPClient http;

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

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

   Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  display.clearDisplay();

  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  // Display static text
  //display.println("Nhiet do: 32 do c");
  display.display(); 

}

void loop() {
   if ((WiFi.status() == WL_CONNECTED)) {
    HTTPClient http;
    http.begin("https://api.openweathermap.org/data/2.5/weather?id=1562693&appid=797338d1341d1f86d34e06e283a30557");
    int httpCode = http.GET();

    if (httpCode > 0) {
      String payload = http.getString();
     // Serial.println(httpCode+">>hao123<<");
      //Serial.println(payload+">>haopayload--");

      // Parse JSON
      DynamicJsonDocument doc(1024);
      deserializeJson(doc, payload);

      // Truy xuất thông tin nhiệt độ và độ ẩm từ JSON
      float temp = doc["main"]["temp"];
      float humidity = doc["main"]["humidity"];

      display.clearDisplay();
      display.setTextSize(1);
      display.setTextColor(WHITE);
      display.setCursor(0, 0);
      display.print("Temp: ");
      display.print(temp - 273.15); // Chuyển đổi từ Kelvin sang Celsius
      display.println(" C");
      display.print("Humidity: ");
      display.print(humidity);
      display.println(" %");
      display.display();
    }
    else {
      Serial.println("Error on HTTP request");
    }
    http.end();
  }
  delay(10000);
}