#include <Wire.h>
#include <WiFi.h>
#include <ArduinoJson.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <ThingSpeak.h> 

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
String APIKEY = "8c9f6eac52a56ea89b8c36162a6d60c7";
String CityID = "1734810"; // Example City ID
WiFiClient client;
char servername[] = "api.openweathermap.org";
String result;

unsigned long channelID = 2235258; 
const char* writeAPIKey = "IU90PCW31HECJ1V5"; 

void setup() {
  Serial.begin(115200);
  
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  delay(200);
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print("Connecting...");
  display.display();
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
    display.print(".");
    display.display();
  }

  display.clearDisplay();
  display.setCursor(0, 0);
  display.println("Connected to WiFi");
  display.display();
  delay(1000);
  display.clearDisplay();
}

void loop() {
  if (client.connect(servername, 80)) {
    client.println("GET /data/2.5/weather?id=" + CityID + "&units=metric&APPID=" + APIKEY);
    client.println("Host: api.openweathermap.org");
    client.println("User-Agent: ArduinoWiFi/1.1");
    client.println("Connection: close");
    client.println();
  } else {
    Serial.println("connection failed");
    Serial.println();
  }

  while (client.connected() && !client.available())
    delay(1);
    
  while (client.connected() || client.available()) {
    char c = client.read();
    result = result + c;
  }

  client.stop();

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

  String location = doc["name"];
  String country = doc["sys"]["country"];
  float temperature = doc["main"]["temp"].as<float>(); 
  int humidity = doc["main"]["humidity"]; 
  float windSpeed = doc["wind"]["speed"].as<float>(); 

  // Send data to ThingSpeak
  ThingSpeak.begin(client);
  ThingSpeak.setField(1, temperature); 
  ThingSpeak.setField(2, humidity);    
  ThingSpeak.setField(3, windSpeed);     
  int httpCode = ThingSpeak.writeFields(channelID, writeAPIKey);
  if (httpCode == 200) {
    Serial.println("Data sent to ThingSpeak successfully");
  } else {
    Serial.print("Error sending data to ThingSpeak. HTTP code: ");
    Serial.println(httpCode);
  }

  Serial.println();
  Serial.print("Country: ");
  Serial.println(country);
  Serial.print("Location: ");
  Serial.println(location);
  Serial.print("Location ID: ");
  Serial.println(CityID); // Print the City ID you used
  Serial.printf("Temperature: %.2f°C\r\n", temperature);
  Serial.printf("Humidity: %d %%\r\n", humidity);
  Serial.printf("Wind speed: %.2f m/s\r\n", windSpeed);

  display.clearDisplay();
  display.setCursor(0, 0);
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
  display.println(" Location: ");
  display.print(country);
  display.print(" ");
  display.println(location);
 
  display.println();
  display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
  display.print("Temperature: ");
  display.print(temperature, 2);
  display.print((char)247);
  display.print("C     ");
  display.print("Humidity: ");
  display.print(humidity);
  display.println("%  ");
  display.print("Wind Speed: ");
  display.print(windSpeed, 2);
  display.println("m/s  ");

  display.display();
  
  delay(60000); // 1 minute delay
}