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

#define DHT22_PIN 23
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
const char *ssid = "your_ssid";
const char *password = "your_password";
String serverAddress = "your_server_address";

DHT dht22(DHT22_PIN, DHT22);
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup()
{
    Serial.begin(9600);

    dht22.begin();
    WiFi.begin(ssid, password);
    Serial.println("Connecting");
    while (WiFi.status() != WL_CONNECTED)
    {
        delay(500);
        Serial.print(".");
    }
    Serial.println("");
    Serial.print("Connected to WiFi network with IP Address: ");
    Serial.println(WiFi.localIP());
}

void loop()
{
    float humi = dht22.readHumidity();
    float tempC = dht22.readTemperature();

    if (isnan(tempC) || isnan(tempF) || isnan(humi))
    {
        Serial.println("Failed to read from DHT22 sensor!");
    }
    else
    {
        Serial.print("Humidity: ");
        Serial.print(humi);
        Serial.print("% | Temperature: ");
        Serial.print(tempC);
        Serial.println("°C");
    }

    if (WiFi.status() == WL_CONNECTED)
    {
        JsonDocument doc;
        doc["temperature"] = tempC;
        doc["humidity"] = humi;
        char output[256];
        serializeJson(doc, output);
        WiFiClient client;
        HTTPClient http;

        http.begin(client, serverAddress);
        http.addHeader("Content-Type", "application/json");
        int httpResponseCode = http.POST(output);
        Serial.print("HTTP Response code: ");
        Serial.println(httpResponseCode);

        http.end();
    }
    else
    {
        Serial.println("WiFi Disconnected");
    }

    delay(2000);
}