#include 
#include 

// Wi-Fi credentials
const char* ssid = "WiFi-Car";
const char* password = "password123";

// Motor pins (Using common GPIO numbers for NodeMCU)
// Adjust these pins based on your specific NodeMCU board layout if needed
const int motor1Pin1 = D1; // GPIO 5
const int motor1Pin2 = D2; // GPIO 4
const int motor2Pin1 = D3; // GPIO 0
const int motor2Pin2 = D4; // GPIO 2

// Create web server on port 80
ESP8266WebServer server(80);

// --- Function Declarations ---
void handleRoot();
void handleForward();
void handleBackward();
void handleLeft();
void handleRight();
void handleStop();
void stopMotors();
void moveForward();
void moveBackward();
void turnLeft();
void turnRight();


// --- Setup Function ---
void setup() {
  // Initialize serial communication for debugging
  Serial.begin(115200);
  Serial.println("\nWiFi Car Setup");

  // Set motor control pins as outputs
  pinMode(motor1Pin1, OUTPUT);
  pinMode(motor1Pin2, OUTPUT);
  pinMode(motor2Pin1, OUTPUT);
  pinMode(motor2Pin2, OUTPUT);

  // Ensure motors are stopped initially
  stopMotors();
  Serial.println("Motors Initialized and Stopped.");

  // Set up NodeMCU as a Wi-Fi Access Point
  Serial.print("Setting up Access Point...");
  WiFi.softAP(ssid, password);
  Serial.println(" Done.");

  IPAddress apIP = WiFi.softAPIP();
  Serial.print("AP IP address: ");
  Serial.println(apIP);

  // Define server routes (web page handlers)
  server.on("/", HTTP_GET, handleRoot);        // Main control page
  server.on("/forward", HTTP_GET, handleForward);
  server.on("/backward", HTTP_GET, handleBackward);
  server.on("/left", HTTP_GET, handleLeft);
  server.on("/right", HTTP_GET, handleRight);
  server.on("/stop", HTTP_GET, handleStop);

  // Start the web server
  server.begin();
  Serial.println("HTTP server started. Ready for connections.");
}

// --- Main Loop ---
void loop() {
  // Handle incoming client requests
  server.handleClient();
}

// --- Web Page Handlers ---
void handleRoot() {
  // Send the HTML control page to the client
  // NOTE: This C++ string contains the HTML for the car's control interface
  String html = R"rawliteral(








WiFi Car Control

  
Forward
  
Left
  
Stop
  
Right
  
Backward




)rawliteral";
  server.send(200, "text/html", html);
}

void handleForward() {
  Serial.println("Command: Forward");
  moveForward();
  server.send(200, "text/plain", "OK");
}

void handleBackward() {
  Serial.println("Command: Backward");
  moveBackward();
  server.send(200, "text/plain", "OK");
}

void handleLeft() {
  Serial.println("Command: Left");
  turnLeft();
  server.send(200, "text/plain", "OK");
}

void handleRight() {
  Serial.println("Command: Right");
  turnRight();
  server.send(200, "text/plain", "OK");
}

void handleStop() {
  Serial.println("Command: Stop");
  stopMotors();
  server.send(200, "text/plain", "OK");
}

// --- Motor Control Functions ---
void stopMotors() {
  digitalWrite(motor1Pin1, LOW);
  digitalWrite(motor1Pin2, LOW);
  digitalWrite(motor2Pin1, LOW);
  digitalWrite(motor2Pin2, LOW);
}

void moveForward() {
  digitalWrite(motor1Pin1, HIGH); // Motor 1 Forward
  digitalWrite(motor1Pin2, LOW);
  digitalWrite(motor2Pin1, HIGH); // Motor 2 Forward
  digitalWrite(motor2Pin2, LOW);
}

void moveBackward() {
  digitalWrite(motor1Pin1, LOW);
  digitalWrite(motor1Pin2, HIGH); // Motor 1 Backward
  digitalWrite(motor2Pin1, LOW);
  digitalWrite(motor2Pin2, HIGH); // Motor 2 Backward
}

void turnLeft() {
  // Turn left: Motor 1 Backward, Motor 2 Forward (Tank steer)
  digitalWrite(motor1Pin1, LOW);
  digitalWrite(motor1Pin2, HIGH);
  digitalWrite(motor2Pin1, HIGH);
  digitalWrite(motor2Pin2, LOW);
}

void turnRight() {
  // Turn right: Motor 1 Forward, Motor 2 Backward (Tank steer)
  digitalWrite(motor1Pin1, HIGH);
  digitalWrite(motor1Pin2, LOW);
  digitalWrite(motor2Pin1, LOW);
  digitalWrite(motor2Pin2, HIGH);
}