#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <PubSubClient.h>
#include <ArduinoJson.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>

// Wi-Fi ayarları
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// MQTT ayarları
const char* mqtt_server = "2e6323f30f1342559c82924bc9803c58.s1.eu.hivemq.cloud";
const int mqtt_port = 8883; // SSL/TLS bağlantısı için port
const char* mqtt_user = "Receiver";
const char* mqtt_password = "Receiver123";

WiFiClientSecure espClient;
PubSubClient client(espClient);

#define BTN_PIN 5
#define TFT_DC 2
#define TFT_CS 15
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

float tempThreshold = 25.0; // Adjustable thresholds
float humidityThreshold = 50.0;
int lightThreshold = 150;

void setup() {
  Serial.begin(115200);
  setup_wifi();
  espClient.setInsecure(); // Sertifika doğrulamasını devre dışı bırakma
  client.setServer(mqtt_server, mqtt_port);
  client.setCallback(callback);
  pinMode(BTN_PIN, INPUT_PULLUP);
  tft.begin();
  tft.setRotation(1);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.print("Connecting to WiFi");

  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    tft.print(".");
  }
  tft.print("\nOK! IP=");
  tft.println(WiFi.localIP());
}

void setup_wifi() {
  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

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

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  DynamicJsonDocument doc(1024);
  DeserializationError error = deserializeJson(doc, payload, length);
  if (error) {
    Serial.println("Failed to parse JSON");
    return;
  }

  // Extract sensor data
  float temperature = doc["temperature"];
  float humidity = doc["humidity"];
  int light = doc["light"];

  // Update TFT display
  tft.fillScreen(ILI9341_BLACK);
  tft.setCursor(0, 0);
  tft.print("Temperature: ");
  tft.println(temperature);
  tft.print("Humidity: ");
  tft.println(humidity);
  tft.print("Light Level: ");
  tft.println(light);
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    if (client.connect("ESP32ClientSubscriber", mqtt_user, mqtt_password)) {
      Serial.println("connected");
      tft.print("Connected MQTT Broker");
      client.subscribe("sensor/data");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}

void updateThresholds() {
  // Read potentiometer values and update thresholds
  tempThreshold = map(analogRead(32), 0, 4095, -40, 80); // Mapping potentiometer value to range 0-100
  humidityThreshold = map(analogRead(33), 0, 4095, 0, 100);
  lightThreshold = map(analogRead(34), 0, 4095, 32, 4063); // Assuming 10-bit ADC
  
  // Update TFT display with new thresholds
  StaticJsonDocument<200> doc;
  doc["tempThreshold"] = tempThreshold;
  doc["humidityThreshold"] = humidityThreshold;
  doc["lightThreshold"] = lightThreshold;

  char buffer[256];
  size_t n = serializeJson(doc, buffer);

  client.publish("sensor/thresholds", buffer, n);

  Serial.print("Temp Threshold: ");
  Serial.println(tempThreshold);
  delay(2000);
  Serial.print("Humidity Threshold: ");
  Serial.println(humidityThreshold);
  delay(2000);
  Serial.print("Light Threshold: ");
  Serial.println(lightThreshold);
  delay(2000);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
  updateThresholds();
}