#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET    -1
Adafruit_SSD1306 display(128, 64, &Wire, OLED_RESET);

const char* ssid     = "Wokwi-GUEST";
const char* password = "";

const char* apiEndpoint = "http://api.openweathermap.org/data/2.5/weather?q=Munich&appid=1e3c1094c33839191f343c88bf847cbc&units=metric";

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.println("Wetter laden...");
  display.display();
}

void loop() {
  if(WiFi.status() == WL_CONNECTED){
    HTTPClient http;
    http.begin(apiEndpoint);
    int httpCode = http.GET();

    if(httpCode > 0){
        String payload = http.getString();
        DynamicJsonDocument doc(1024);
        deserializeJson(doc, payload);
        float temp = doc["main"]["temp"];
        String weather = doc["weather"][0]["main"];

        display.clearDisplay();
        display.setCursor(0,0);
        display.println("Temp: " + String(temp) + "C");
        display.println("Wetter: " + weather);
        display.display();
    } else {
        Serial.println("Error on HTTP request");
    }
    http.end();
  }
  delay(60000); // Update jede Minute
}