#include <TFT_eSPI.h>
#include <WiFi.h>
#include <PubSubClient.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>

#define TFT_MISO 19  // GPIO pin for MISO
#define TFT_MOSI 23  // GPIO pin for MOSI
#define TFT_SCLK 18  // GPIO pin for SCK
#define TFT_CS   15   // GPIO pin for CS
#define TFT_DC   2  // GPIO pin for DC
#define TFT_RST  4   // GPIO pin for RST
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);


const char* ssid = "Wokwi-GUEST"; // Replace with your network SSID
const char* password = ""; // Replace with your network password
const char* mqtt_server = "broker.emqx.io";
const int mqtt_port = 1883;




WiFiClient espClient;
PubSubClient client(espClient);
const int ledPin = 5;

void setup() {
    Serial.begin(115200);  // Initialize serial communication
    tft.begin();
    tft.setRotation(1);
    tft.fillScreen(TFT_BLACK);
    
    pinMode(ledPin, OUTPUT);
    
    connectToWiFi();
    
    client.setServer(mqtt_server, 1883);
    connectToMQTT();
    
    displayInfo();
}

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

void connectToWiFi() {
    Serial.println("Connecting to WiFi...");
    tft.setTextColor(TFT_WHITE);
    tft.setTextSize(2);
    tft.setCursor(20, 100);
    tft.print("Connecting to WiFi...");
    
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        tft.print("."); // Show progress
    }
    Serial.println("WiFi connected");
    tft.setCursor(20, 120);
    tft.print("WiFi Connected!");
}

void connectToMQTT() {
    while (!client.connected()) {
        Serial.println("Connecting to MQTT...");
        tft.setCursor(20, 140);
        tft.print("Connecting to MQTT...");
        
        if (client.connect("ESP32Client")) {
            Serial.println("Connected to MQTT");
            tft.setCursor(20, 160);
            tft.print("Connected Successfully");
            blinkLED();
        } else {
            Serial.print("MQTT connect failed, rc=");
            Serial.print(client.state());
            delay(2000);
        }
    }
}

void blinkLED() {
    for (int i = 0; i < 5; i++) {
        digitalWrite(ledPin, HIGH);
        delay(500);
        digitalWrite(ledPin, LOW);
        delay(500);
    }
    
    tft.setCursor(20, 180);
    tft.print("LED Blinking...");
    tft.setCursor(20, 200);
    tft.print("REGISTER NUMBER: 22138044");
}

void displayInfo() {
    tft.setCursor(20, 120);
    tft.print("REGISTER NUMBER: 22138044"); // Replace with your actual register number
}