#include <WiFi.h>
#include <HTTPClient.h>
#include <WiFiClientSecure.h>
#include <DHTesp.h>

#define DHT_PIN 15
#define SOIL_PIN 34

const char* WIFI_SSID = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";

// Replace with your Codespaces HTTPS address
const char* API_URL =
  "https://refactored-chainsaw-9759w5vwv79c7vvg-5000.app.github.dev/api/sensors/readings";

// Use a dedicated development token
const char* DEVICE_TOKEN = "3f2d0fc84361960dff1de8d372a01ff574c234a515d9ffe9468384133db1e3c5";

DHTesp dht;

void setup() {
  Serial.begin(115200);
  dht.setup(DHT_PIN, DHTesp::DHT22);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD, 6);

  Serial.print("Connecting to WiFi");

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

  Serial.println("\nWiFi connected!");
  Serial.println("TemoLinks IoT monitoring started!");
}

void loop() {
  TempAndHumidity data = dht.getTempAndHumidity();

  int raw = analogRead(SOIL_PIN);
  int moisture = constrain(map(raw, 0, 4095, 0, 100), 0, 100);

  if (isnan(data.temperature) || isnan(data.humidity)) {
    Serial.println("DHT22 reading failed");
    delay(3000);
    return;
  }

  if (WiFi.status() == WL_CONNECTED) {
    WiFiClientSecure client;

    // Simulation-only TLS configuration.
    // Replace with certificate validation for real hardware.
    client.setInsecure();

    HTTPClient http;

    if (http.begin(client, API_URL)) {
      http.addHeader("Content-Type", "application/json");
      http.addHeader("X-Device-Token", DEVICE_TOKEN);

      String payload = "{";
      payload += "\"temperature\":" + String(data.temperature, 2);
      payload += ",\"humidity\":" + String(data.humidity, 2);
      payload += ",\"soilMoisture\":" + String(moisture);
      payload += "}";

      int responseCode = http.POST(payload);

      Serial.println("Sending to TemoLinks...");
      Serial.println(payload);
      Serial.print("HTTP response: ");
      Serial.println(responseCode);

      if (responseCode > 0) {
        Serial.println(http.getString());
      }

      http.end();
    } else {
      Serial.println("Failed to initialize HTTP request");
    }
  }

  delay(5000);
}